Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2902270 A
Publication typeGrant
Publication dateSep 1, 1959
Filing dateSep 1, 1953
Priority dateJul 17, 1953
Publication numberUS 2902270 A, US 2902270A, US-A-2902270, US2902270 A, US2902270A
InventorsBengt Persson, Wilhelm Salomonsson Gosta Joha
Original AssigneeHusky Oil Company, Svenska Skifferolje Aktiebolag
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of and means in heating of subsurface fuel-containing deposits "in situ"
US 2902270 A
Images(2)
Previous page
Next page
Description  (OCR text may contain errors)

Sept. 1 1959 Filed Sept. 1. 1953 G. J. w. SALOMONSSON ETAL METHOD OF AND MEANS. INHEATING OF SUB-SURFACE FUEL-CONTAINING DEPOSITS "IN SITU" 2 Sheets-Sheet 1 s. we 7 17 a s L iIK- Ma 4 AT'TORNYEY Sept. 1, 1959 G.-J. w. sALoMoNssoN ET AL 2,

METHOD OF AND MEANS IN HEATING 0F SUB-SURFACE FUELCONTAINING DEPOSITS "IN SITU" Filed Sept. 1. 1953 2 Sheets-Sheet 2 ..III. 1 1:11:11 fhrnnnllinllrllvlnii r/"is INVENTORS I cbs'rA; -J.W. SALOMONSSON BENGT PERSSON ATTORNEY United States Patent METHOD OF AND MEANS IN HEATING OF SUB- SURFACE FUEL-CONTAINING DEPOSITS 1N SITU Giista Johan Wilhelm Salomonsson, Hallabrottet, and Bengt Persson, Knmla, Sweden, assignors, by direct and mesne assignments, of one-half to Svenska Skifferolje Aktiebolaget, Orebro, Sweden, a Swedish jointstock company, and one-half to Husky Oil Company, Cody, Wyo., a corporation of Delaware Application September 1, 1953, Serial No. 377,952

Claims priority, application Sweden July 17, 1953 16 Claims. (Cl. 262-3) This invention relates to a method and means in the exploitation of geological deposits for the recovery of fluid or/ and gaseous products by heating of said deposits in situ, i.e. in place in the earth.

More particularly this invention relates to a method and means in the exploitation of sub-surface fuel-carrying deposits for the recovery of valuable fluid or/ and gaseous products by direct heating of said deposits in situ, i.e. in their natural location. Deposits adapted to be exploited in this manner are, for example, shale formations, tar-sand and sulphur deposits.

The heating in situ is performed to a large extent, at least as far as it is applied to shale formations, by means of electric heating members driven down and introduced into the formation to be exploited.

In the exploitation of fuel-carrying deposits by heating in situ considerable quantities of combustible gas are obtained. One object of the present invention is to provide a method and means permitting directly to use said gas as fuel in the heating operation. In this way it is possible to avoid part of the losses and additional costs inherent to the circuitous way over a steam-operated power plant using the recovered gas as fuel for boilers.

When using a convenient gas burner in a long tubular heating member which for various reasons has proved to be the most suitable equipment for the direct heating of sub-surface deposits, there will be caused a very ununiform distribution of temperature over the heating member with a distinct top of the heating curve around the flame proper. In order to avoid this drawback it has been proposed to dispose a plurality of flames on various levels within the long tubular heating member. The realization of this proposal is, however, greatly obstructed by difficulties in obtaining for each of the individual flames the most suitable proportion between the quantities of supplied fuel and oxygen.

A further object of the invention is to provide a method ensuring uniform distribution of temperature along the tubular heating member in spite of the presence of one flame only.

Still a further object of the invention is to provide various means adapted to influence the distribution of temperature along the tubular heating member and in particular in the vicinity of the single flame.

Further objects and advantages will be apparent from the following description considered in connection with the accompanying drawings which form part of this specification and of which:

Fig. 1 is a longitudinal section through a heating member embodying the invention.

Fig. 2 is a section on line IIII of Fig. 1.

Fig. 3 is a longitudinal section through a modified heating member embodying the invention.

Fig. 4 is a longitudinal section through a further modi- "ice ' tubes denoted by 10, 12 and 14, respectively. The innermost tube 10 is by means of a stufling box 11 connected to one end of the intermediate tube 12, said intermediate tube in turn by means of a stufling box 13 being connected to one end of the outermost tube 14. Said external tube 14 is at its end remote from the stuffing box 13 provided with a bottom 15. Spaced apart from said bottom 15 is the free end of the intermediate tube 12 located inside the external tube 14. The corresponding free end of the internal tube 10 is under operation located substantially further spaced from the bottom 15 than is the free end of the intermediate tube 12. The internal tube 10 is, however of equal length as the other tubes, due to which fact the major part of said tube 10 normally projects outside the external and intermediate tubes 14 and 12, respectively, which implies that it is on the opposite side of the stuffing box 11 seen from the bottom 15. This arrangement renders possible on certain occasions, for instance when igniting the member, to displace the internal tube 10 within the stufling box 11 so as to approach its mouth to the bottom 15. The intermediate tube 12 is also displaceable within the stufling box 13 relative the external tube 14. At its end remote from the bottom 15 the external tube 10 is sealed by means of a lock 16 and adjacent thereto provided with a connecting tube 17. Similar connecting tubes 18 and 19, respectively, are attached to the intermediate tube 12 and the exterior tube 14 adjacent the corresponding stutfing boxes 11 and 13, respectively. In order to obtain requisite guidance of the three concentric tubes 10, 12 and 14 relative to one another, short pieces 20 of rod iron are inserted in the interspaces between said tubes. As will be seen from Fig. 2, these pieces 20 of rod iron are displaced relative to one another by and secured by welding to the interior face of those two tubes which form the interspace.

The fuel to be burned is supplied through the connecting tube 17 into the internal tube 10, the required air of combustion being allowed to enter the interspace between the internal tube 10 and the intermediate tube 12. Upon ignition a flame will develop at the free end of the internal tube 10. The hot flue gases formed will flow in the intermediate tube 12 in the direction towards the bottom 15. On their arrival there they are forced to turn and are then allowed in the opposite direction to enter the interspace between the external tube 14- and the intermediate tube 12 and to escape through the connecting tube 19. During their path from the flame to the bottom 15 and back to the outer interspace the flue gases transmit part of their heat content to the surrounding tube walls. As far as the intermediate tube 12 is concerned the temperature transmitted is highest around the flame and decreases uniformly along the longitudinal extension of the tube towards the bottom 15. Upon the turn and further flow in the opposite direction of the flue gases their temperature continues to fall. The heat delivered thereunder from the flue gases to the wall of the external tube 14 will thus be greatest adjacent the bottom 15 and then decrease in the direction towards the connecting tube 19. This effect is totally or at least partly counteracted by the external tube 14 also receiving an additional supply of heat from the intermediate tube 12 by radiation from this latter. As the temperature of the intermediate tube 12 is the high est and consequently the heat radiation therefrom has its aximum round t fl m n de e e a d bottom 15, the result will be that the total quantity of heat transmitted within a pre-determined unit of time y q h-ra qn and qnve iqn qm the me be 14 will be approximately the same for each length unit at he e e nal tube 14. be w n its b o n s PO tion located sti'aight opposite the flame. As far as that part of the external tube is concerned, which is located bfilWeen the flame and the connecting tube 19, the heat supply to the tube wall is considerably lower, since any additional heat from the intermediate tube is not received. On the contrary, the entering combustion air has some cooling eflect on the escaping flue gases. In this way part of the heat inherent to the escaping flue gases will be utilized in pro-heating the combustion air.

With the construction described above a relatively uniform distribution of temperature is obtained for that part of the external tube 14, which is located between the free opening of the internal tube 10 and the bottom 15. A somewhat higher temperature is, however, prevailing nearest to the flame. Equalization of this difference in temperature may be brought about by providing the intermediate tube 12 to a suitable extent with an encasing protection 21 to radiation as is shown in Fig. 3. Another expedient is to cover either the intermediate or the external tube to a desired extent with an insulating layer 24.

Another possibility of exerting an equalizing effect on the distribution of temperature along the external tube consists in varying the velocity of flow of the flue gases and thereby also the delivery of heat from them by varying the area of passage open to said gases. Byincreasing the velocity of the flue gases the k-value will be improved, but due to the shortened time of stay the delivery of heat will nevertheless be reduced. A means for providing variations of the area of passage is presented in Fig. 4 showing the intermediate tube 12 provided with an external bulbous tube piece 22, which may be displaceable on the tube 12.

Big. finally shows a device for igniting the heating member constructed according to the invention. This ignition is performed by inserting an ignited rocket 23 into the internal tube 10, which then must be placed so as to have its mouth immediately above the bottom 15. In this way condensate is prevented from collecting in the external tube on said bottom. Such condensation would occur easily unless the parts adjacent the bottom are heated sufliciently quickly. i

The gaseous fuel may entirely or partly be replaced by liquid or finally divided solid fuel. The combustion air may entirely or partly be replaced by oxygen or an oxygen-containing gaseous mixture. V While several more or less specific embodiments of the invention have been shown, it is to be understood that this is for purpose of illustration only and that the invention is not to be limited thereby, but its scope to' be determined by the appended claims.

What we claim is:

1. A method of heating which comprises maintaining flame-developed combustion at a central combustion zone, conducting the hot flue gases in a flow passage leading away from said combustion zone, reversing the flow of said flue gases, and conducting said reversed flow of flue gases in a zone surrounding said flow passage and said combustion zone in counter current to the direction of flow of the flue gases from said combustion zone, the flow passage and the zone surrounding said flow passage being mechanically separate but in heat conducting relation with each other, and the zone surrounding said flow passage being sealed against exit of gases therefrom to material undergoing heating, thereby combining the effects of radiation and convection from both the flame and the flue gases to give an elongatedheating zone of substantially uniform temperature. V V

2. The method of claim 1 in which the cross-sectional area for the flow passage of the escaping flue gases is varied to modify the distribution of temperature in said elongated zone.

3. The method of claim 1 in which the effect of radiation is modified by restricting radiation from any more highly heated zone.

4. The method of claim 3 in which the modification of the effect of radiation is performed around the flame t the com us i Z 5. The method of claim 3 in which the modification of the effect of radiation is performed along at least part of the path of the flue gases.

6. The method of claim 3 in which the effect of heat transmission is modified by heat insulation.

7. The method of claim 6 in which the modification of the effect of radiation is performed around the flame at the combustion zone.

8. The method of claim 6 in which the modification of the effect of radiation is performed along at least part of the path of the flue gases.

9. The method of claim 1 in which the combustion is supported by fuel supplied to the combustion zone.

10. The method of claim 1 in which sub-surface fuelcontaining deposits are heated in situ for recovery of valuable products therefrom.

11. The method of claim 10 in which gas is supplied to the. composition zone from gas formed by heating the sub-surface deposit.

12. A method of heating sub-surface deposits in situ for recovery of valuable products in fluid condition by introducing into the deposit, tubular members disposed substantially concentrically one within another, of which members, the outermost is sealed at its lower end, one tubular member enclosed by and adjacent to said outer most tubular member having an outlet located above said sealed end in which a flame-developing combustion of a mixture containing fuel and a combustion-sustaining medium is effected, in a combustion zone, characterized in that the flue gases from the combustion zone formed within the innermost tubular member in spaced relationship to the upper end thereof are caused to flow in a downward direction and thereafter back in opposite direction inside the annular space between two outer tubular members and in heat conductive connection with the downwardly directed flow of flue gases from the innermost tubular member whereby the combined effect of convection and radiation from the flue gases and said flame produces a desired equal distribution of the heat and thereby substantially uniform temperature of the outermost tubular member in the longitudinal direction thereof.

13. A method according to claim 12, characterizedin that a portion of the gas involved by heating of the de: posit is returned to the combustion zone and used there as fuel.

14. A heatingdevice for heating sub-surface deposits, characterized by three substantially concentric tubes of which the outermost is sealed at is base, the intermediate tube opening into the first-mentioned tube in spaced relationship above the sealed base of said first-mentioned tube, the innermost tube opening into the intermediate tube at a still higher level above said sealed base, said two inner tubes being connected with an inlet each for supply of fuel and combustion sustaining medium, respectively, and theannular space between said intermediate and said first-mentioned tube having an escape opening for the fuel gases produced in the combustion zone located within the intermediate tube below the opening of the innermosttube.

15. A device according toclaim 14 wherein the several tubes are axially displaceable relatively to one another.

16. A device according to claim 14 wherein are proi 1 1- Pr ect o ev ce aga ns ra iation, and, insulating 5 layers disposed around the flame and path of the flue 2,497,868 gases and around the combustion zone. 2,506,853 2,732,195 References Cited in the file of this patent UNITED STATES PATENTS 5 1,170,266 Huff Feb. 1, 1916 155,732 1,449,420 Kreager et a1 Mar. 27, 1923 537,657 1,724,783 Smallwood et a1 Aug. 13, 1929 123,137

6 Dalin Feb. 21, 1950 Berge et a1. May 9, 1950 Ljlmgstrom Jan. 24, 1956 FOREIGN PATENTS Great Britain Dec. 30, 1920 Great Britain July 1, 1941 Sweden Nov. 9, 1948

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1170266 *Dec 27, 1915Feb 1, 1916Louise Guidry MossApparatus for operating sulfur-wells.
US1449420 *May 13, 1921Mar 27, 1923Kreager William A JApparatus for clearing oil wells of clogging material
US1724783 *Apr 20, 1926Aug 13, 1929Smallwood AlfredFurnace
US2497868 *Oct 10, 1946Feb 21, 1950David DalinUnderground exploitation of fuel deposits
US2506853 *May 30, 1945May 9, 1950Union Oil CoOil well furnace
US2732195 *Jun 24, 1947Jan 24, 1956 Ljungstrom
GB155732A * Title not available
GB537657A * Title not available
SE123137A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2985240 *May 21, 1959May 23, 1961Sinclair Oil & Gas CompanyBottom hole burner
US3080800 *May 17, 1960Mar 12, 1963Malzahn Gus EHeated asphalt rollers
US3091225 *Dec 29, 1958May 28, 1963Phillips Petroleum CoInitiating and controlling underground combustion
US3095031 *Dec 28, 1959Jun 25, 1963Harry Sinclair LeifBurners for use in bore holes in the ground
US3127936 *Jan 2, 1958Apr 7, 1964Svenska Skifferolje AktiebolagMethod of in situ heating of subsurface preferably fuel containing deposits
US3162781 *Mar 22, 1961Dec 22, 1964Smith Don BMagnetohydrodynamic generator
US3223081 *May 24, 1963Dec 14, 1965Pan American Petroleum CorpBottom-hole catalytic heater using heat transfer liquid
US3243612 *Jun 12, 1962Mar 29, 1966Thermo Electron Eng CorpFuel fired thermionic engines
US3254721 *Dec 20, 1963Jun 7, 1966Gulf Research Development CoDown-hole fluid fuel burner
US3272262 *Jan 23, 1964Sep 13, 1966Pan American Petroleum CorpIgnition of thick pay formations
US3746088 *Sep 7, 1971Jul 17, 1973Chevron ResApparatus for use in wells
US4298333 *Sep 11, 1978Nov 3, 1981J. AichelinIndustrial heating installation and method of operation
US4301866 *Feb 8, 1980Nov 24, 1981Occidental Oil Shale, Inc.Method and apparatus for igniting an in situ oil shale retort
US4401099 *Jul 11, 1980Aug 30, 1983W.B. Combustion, Inc.Single-ended recuperative radiant tube assembly and method
US4401159 *May 18, 1981Aug 30, 1983Flying K Equipment System, Inc.Jet engine pump and downhole heater
US4479540 *May 24, 1982Oct 30, 1984L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges ClaudeGasification of coal
US4502535 *Aug 26, 1983Mar 5, 1985Kofahl William MJet engine pump and downhole heater
US4640352 *Sep 24, 1985Feb 3, 1987Shell Oil CompanyIn-situ steam drive oil recovery process
US4725223 *Sep 22, 1986Feb 16, 1988Maxon CorporationIncinerator burner assembly
US4886118 *Feb 17, 1988Dec 12, 1989Shell Oil CompanyPyrolysis; enhanced oil recovery
US5082055 *Jan 2, 1991Jan 21, 1992Indugas, Inc.Gas fired radiant tube heater
US5224542 *Jan 6, 1992Jul 6, 1993Indugas, Inc.Gas fired radiant tube heater
US5255742 *Jun 12, 1992Oct 26, 1993Shell Oil CompanyHeat injection process
US5297626 *Jun 12, 1992Mar 29, 1994Shell Oil CompanyOil recovery process
US5392854 *Dec 20, 1993Feb 28, 1995Shell Oil CompanyOil recovery process
US5404952 *Dec 20, 1993Apr 11, 1995Shell Oil CompanyHeat injection process and apparatus
US5411089 *Dec 20, 1993May 2, 1995Shell Oil CompanyHeat injection process
US5433271 *Dec 20, 1993Jul 18, 1995Shell Oil CompanyHeat injection process
US5997214 *Jun 3, 1998Dec 7, 1999Shell Oil CompanyRemediation method
US6056057 *Oct 15, 1997May 2, 2000Shell Oil CompanyHeater well method and apparatus
US6102622 *May 12, 1998Aug 15, 2000Board Of Regents Of The University Of Texas SystemRemediation method
US6581684Apr 24, 2001Jun 24, 2003Shell Oil CompanyIn Situ thermal processing of a hydrocarbon containing formation to produce sulfur containing formation fluids
US6588504Apr 24, 2001Jul 8, 2003Shell Oil CompanyConversion of hydrocarbons to produce hydrocarbons, hydrogen, and/or novel product streams from underground coal formations; pyrolysis
US6591906Apr 24, 2001Jul 15, 2003Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected oxygen content
US6591907Apr 24, 2001Jul 15, 2003Shell Oil CompanyPyrolysis
US6607033Apr 24, 2001Aug 19, 2003Shell Oil CompanyIn Situ thermal processing of a coal formation to produce a condensate
US6609570Apr 24, 2001Aug 26, 2003Shell Oil CompanyIn situ thermal processing of a coal formation and ammonia production
US6688387Apr 24, 2001Feb 10, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate
US6698515Apr 24, 2001Mar 2, 2004Shell Oil CompanyIn situ thermal processing of a coal formation using a relatively slow heating rate
US6702016Apr 24, 2001Mar 9, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with heat sources located at an edge of a formation layer
US6708758Apr 24, 2001Mar 23, 2004Shell Oil CompanyIn situ thermal processing of a coal formation leaving one or more selected unprocessed areas
US6712135Apr 24, 2001Mar 30, 2004Shell Oil CompanyIn situ thermal processing of a coal formation in reducing environment
US6712136Apr 24, 2001Mar 30, 2004Shell Oil CompanyProviding heat to the formation; controlling the heat from the heat source such that an average temperature within at least a majority of the selected section of the formation is less than about 375 degrees c.
US6712137Apr 24, 2001Mar 30, 2004Shell Oil CompanyHeat exchanging to superimpose heat
US6715546Apr 24, 2001Apr 6, 2004Shell Oil CompanyChemical and/or physical properties of hydrocarbon material within a subterranean formation may need to be changed to allow hydrocarbon material to be more easily removed
US6715547Apr 24, 2001Apr 6, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to form a substantially uniform, high permeability formation
US6715548Apr 24, 2001Apr 6, 2004Shell Oil CompanyElectrical heaters may be used to heat the subterranean formation by radiation and/or conduction
US6715549Apr 24, 2001Apr 6, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected atomic oxygen to carbon ratio
US6719047Apr 24, 2001Apr 13, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation in a hydrogen-rich environment
US6722429Apr 24, 2001Apr 20, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation leaving one or more selected unprocessed areas
US6722430Apr 24, 2001Apr 20, 2004Shell Oil CompanyIn situ thermal processing of a coal formation with a selected oxygen content and/or selected O/C ratio
US6722431Apr 24, 2001Apr 20, 2004Shell Oil CompanyIn situ thermal processing of hydrocarbons within a relatively permeable formation
US6725920Apr 24, 2001Apr 27, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to convert a selected amount of total organic carbon into hydrocarbon products
US6725921Apr 24, 2001Apr 27, 2004Shell Oil CompanyIn situ thermal processing of a coal formation by controlling a pressure of the formation
US6725928Apr 24, 2001Apr 27, 2004Shell Oil CompanyIn situ thermal processing of a coal formation using a distributed combustor
US6729395Apr 24, 2001May 4, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected ratio of heat sources to production wells
US6729396Apr 24, 2001May 4, 2004Shell Oil CompanyIn situ thermal processing of a coal formation to produce hydrocarbons having a selected carbon number range
US6729397Apr 24, 2001May 4, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected vitrinite reflectance
US6729401Apr 24, 2001May 4, 2004Shell Oil CompanySynthesis gas may be produced from the formation. synthesis gas may be used as a feed stream in an ammonia synthesis process. ammonia may be used as a feed stream in a urea synthesis process.
US6732794Apr 24, 2001May 11, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content
US6732795Apr 24, 2001May 11, 2004Shell Oil CompanyProviding heat from one or more heat sources to at least one portion of formation; allowing heat to transfer from the one or more heat sources to a selected section of the formation; controlling the heat; producing a mixture from the formation
US6732796Apr 24, 2001May 11, 2004Shell Oil CompanyHeating section of formation with heat sources to temperature allowing generation of synthesis gas, providing synthesis gas generating fluid to section, removing synthesis gas generated, repeating for second section, blending for desired ratio
US6736215Apr 24, 2001May 18, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation, in situ production of synthesis gas, and carbon dioxide sequestration
US6739393Apr 24, 2001May 25, 2004Shell Oil CompanyIn situ thermal processing of a coal formation and tuning production
US6739394Apr 24, 2001May 25, 2004Shell Oil CompanyProviding heat and a synthesis gas generating fluid to the section to generate synthesis gas
US6742587Apr 24, 2001Jun 1, 2004Shell Oil CompanyIn situ thermal processing of a coal formation to form a substantially uniform, relatively high permeable formation
US6742588Apr 24, 2001Jun 1, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce formation fluids having a relatively low olefin content
US6742589Apr 24, 2001Jun 1, 2004Shell Oil CompanyIn situ thermal processing of a coal formation using repeating triangular patterns of heat sources
US6742593Apr 24, 2001Jun 1, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using heat transfer from a heat transfer fluid to heat the formation
US6745831Apr 24, 2001Jun 8, 2004Shell Oil CompanyMixture of hydrocarbons, h2, and/or other formation fluids may be produced from the formation. heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature.
US6745832Apr 24, 2001Jun 8, 2004Shell Oil CompanySitu thermal processing of a hydrocarbon containing formation to control product composition
US6745837Apr 24, 2001Jun 8, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a controlled heating rate
US6749021Apr 24, 2001Jun 15, 2004Shell Oil CompanyPyrolysis
US6752210Apr 24, 2001Jun 22, 2004Shell Oil CompanyIn situ thermal processing of a coal formation using heat sources positioned within open wellbores
US6758268Apr 24, 2001Jul 6, 2004Shell Oil CompanyHeat exchanging, pyrolysis; monitoring temperature
US6761216Apr 24, 2001Jul 13, 2004Shell Oil CompanyPyrolysis temperature
US6763886Apr 24, 2001Jul 20, 2004Shell Oil CompanyIn situ thermal processing of a coal formation with carbon dioxide sequestration
US6769483Apr 24, 2001Aug 3, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using conductor in conduit heat sources
US6769485Apr 24, 2001Aug 3, 2004Shell Oil CompanyIn situ production of synthesis gas from a coal formation through a heat source wellbore
US6789625Apr 24, 2001Sep 14, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using exposed metal heat sources
US6805195Apr 24, 2001Oct 19, 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce hydrocarbon fluids and synthesis gas
US6820688Apr 24, 2001Nov 23, 2004Shell Oil CompanyHeat exchanging after pyrolyzation to support synthesis gas generation
US6866097Apr 24, 2001Mar 15, 2005Shell Oil CompanySuperpositioning of heaters for pyrolysis to form mixture of hydrocarbons and hydrogen; controlling pressure; heat exchanging
US6871707Apr 24, 2001Mar 29, 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with carbon dioxide sequestration
US6877554Apr 24, 2001Apr 12, 2005Shell Oil CompanyPyrolysis
US6877555Apr 24, 2002Apr 12, 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation while inhibiting coking
US6880633Apr 24, 2002Apr 19, 2005Shell Oil CompanyIncludes shutting-in an in situ treatment process in an oil shale formation may include terminating heating from heat sources providing heat to a portion of the formation; hydrocarbon vapor may be produced
US6880635Apr 24, 2001Apr 19, 2005Shell Oil CompanyMethods and systems for production of hydrocarbons, hydrogen, and/or other products from underground coal formations
US6889769Apr 24, 2001May 10, 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected moisture content
US6896053Apr 24, 2001May 24, 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using repeating triangular patterns of heat sources
US6902003Apr 24, 2001Jun 7, 2005Shell Oil CompanyAllowing heat to transfer from heaters to a formation selected for heating using a total organic matter weight percentage of > 5% and recirculating hydrogen
US6902004Apr 24, 2001Jun 7, 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a movable heating element
US6910536Apr 24, 2001Jun 28, 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor
US6913078Apr 24, 2001Jul 5, 2005Shell Oil CompanyIn Situ thermal processing of hydrocarbons within a relatively impermeable formation
US6915850Apr 24, 2002Jul 12, 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation having permeable and impermeable sections
US6918442Apr 24, 2002Jul 19, 2005Shell Oil CompanyIn situ conversion of hydrocarbons to produce hydrocarbons, hydrogen, and/or novel product streams from underground oil shale formations
US6918443Apr 24, 2002Jul 19, 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range
US6923257Apr 24, 2002Aug 2, 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation to produce a condensate
US6923258Jun 12, 2003Aug 2, 2005Shell Oil CompanyIn situ thermal processsing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content
US6929067Apr 24, 2002Aug 16, 2005Shell Oil CompanyHeat sources with conductive material for in situ thermal processing of an oil shale formation
US6932155Oct 24, 2002Aug 23, 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well
US6948562Apr 24, 2002Sep 27, 2005Shell Oil CompanyProduction of a blending agent using an in situ thermal process in a relatively permeable formation
US6948563Apr 24, 2001Sep 27, 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content
US6951247Apr 24, 2002Oct 4, 2005Shell Oil CompanyControl the heat exchanging, pyrolyzing hydrocarbons, enhancing oil recovery
US6951436Oct 24, 2002Oct 4, 2005Board Of Regents, The University Of Texas SystemThermally enhanced soil decontamination method
US6953087Apr 24, 2001Oct 11, 2005Shell Oil CompanyThermal processing of a hydrocarbon containing formation to increase a permeability of the formation
US6959761Apr 24, 2001Nov 1, 2005Shell Oil CompanyIn situ thermal processing of a coal formation with a selected ratio of heat sources to production wells
US6964300Apr 24, 2002Nov 15, 2005Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation with backproduction through a heater wellbore
US6966372Apr 24, 2001Nov 22, 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce oxygen containing formation fluids
US6966374Apr 24, 2002Nov 22, 2005Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation using gas to increase mobility
US6969123Oct 24, 2002Nov 29, 2005Shell Oil CompanyUpgrading and mining of coal
US6973967Apr 24, 2001Dec 13, 2005Shell Oil Companyhydrocarbons within a coal formation are converted in situ within the formation to yield a mixture of relatively high quality hydrocarbon products, hydrogen, and other products; the coal is heated to to temperatures that allow pyrolysis
US6981548Apr 24, 2002Jan 3, 2006Shell Oil Companyheating and pyrolysis of heavy hydrocarbon sections in subterranean wells to produce light hydrocarbons; reduced viscosity improves movement; fluid removal in liquid and/or vapor phase
US6991031Apr 24, 2001Jan 31, 2006Shell Oil CompanyIn situ thermal processing of a coal formation to convert a selected total organic carbon content into hydrocarbon products
US6991032Apr 24, 2002Jan 31, 2006Shell Oil CompanyHeat sources positioned within the formation in a selected pattern raise a temperature of a portion of the formation to a pyrolysis temperature.
US6991033Apr 24, 2002Jan 31, 2006Shell Oil CompanyIn situ thermal processing while controlling pressure in an oil shale formation
US6991036Apr 24, 2002Jan 31, 2006Shell Oil CompanyThermal processing of a relatively permeable formation
US6991045Oct 24, 2002Jan 31, 2006Shell Oil CompanyForming openings in a hydrocarbon containing formation using magnetic tracking
US6994160Apr 24, 2001Feb 7, 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce hydrocarbons having a selected carbon number range
US6994161Apr 24, 2001Feb 7, 2006Kevin Albert MaherIn situ thermal processing of a coal formation with a selected moisture content
US6994168Apr 24, 2001Feb 7, 2006Scott Lee WellingtonIn situ thermal processing of a hydrocarbon containing formation with a selected hydrogen to carbon ratio
US6994169Apr 24, 2002Feb 7, 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation with a selected property
US6997255Apr 24, 2001Feb 14, 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation in a reducing environment
US6997518Apr 24, 2002Feb 14, 2006Shell Oil CompanyIn situ thermal processing and solution mining of an oil shale formation
US7004247Apr 24, 2002Feb 28, 2006Shell Oil CompanyConductor-in-conduit heat sources for in situ thermal processing of an oil shale formation
US7004251Apr 24, 2002Feb 28, 2006Shell Oil CompanyIn situ thermal processing and remediation of an oil shale formation
US7004678May 15, 2003Feb 28, 2006Board Of Regents, The University Of Texas SystemSoil remediation with heated soil
US7011154Oct 24, 2002Mar 14, 2006Shell Oil CompanyIn situ recovery from a kerogen and liquid hydrocarbon containing formation
US7013972Apr 24, 2002Mar 21, 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation using a natural distributed combustor
US7017661Apr 24, 2001Mar 28, 2006Shell Oil CompanyProduction of synthesis gas from a coal formation
US7032660 *Apr 24, 2002Apr 25, 2006Shell Oil CompanyIn situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation
US7036583Sep 24, 2001May 2, 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to increase a porosity of the formation
US7040398Apr 24, 2002May 9, 2006Shell Oil CompanyIn situ thermal processing of a relatively permeable formation in a reducing environment
US7040399Apr 24, 2002May 9, 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation using a controlled heating rate
US7040400Apr 24, 2002May 9, 2006Shell Oil CompanyIn situ thermal processing of a relatively impermeable formation using an open wellbore
US7051807Apr 24, 2002May 30, 2006Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation with quality control
US7051808Oct 24, 2002May 30, 2006Shell Oil CompanySeismic monitoring of in situ conversion in a hydrocarbon containing formation
US7051811Apr 24, 2002May 30, 2006Shell Oil CompanyIn situ thermal processing through an open wellbore in an oil shale formation
US7055600Apr 24, 2002Jun 6, 2006Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation with controlled production rate
US7063145Oct 24, 2002Jun 20, 2006Shell Oil CompanyMethods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations
US7066254Oct 24, 2002Jun 27, 2006Shell Oil CompanyIn situ thermal processing of a tar sands formation
US7066257Oct 24, 2002Jun 27, 2006Shell Oil CompanyIn situ recovery from lean and rich zones in a hydrocarbon containing formation
US7073578Oct 24, 2003Jul 11, 2006Shell Oil CompanyStaged and/or patterned heating during in situ thermal processing of a hydrocarbon containing formation
US7077198Oct 24, 2002Jul 18, 2006Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation using barriers
US7077199Oct 24, 2002Jul 18, 2006Shell Oil CompanyIn situ thermal processing of an oil reservoir formation
US7086465Oct 24, 2002Aug 8, 2006Shell Oil CompanyIn situ production of a blending agent from a hydrocarbon containing formation
US7086468Apr 24, 2001Aug 8, 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using heat sources positioned within open wellbores
US7090013Oct 24, 2002Aug 15, 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce heated fluids
US7096941Apr 24, 2001Aug 29, 2006Shell Oil CompanyIn situ thermal processing of a coal formation with heat sources located at an edge of a coal layer
US7096942Apr 24, 2002Aug 29, 2006Shell Oil CompanyIn situ thermal processing of a relatively permeable formation while controlling pressure
US7096953Apr 24, 2001Aug 29, 2006Shell Oil CompanyIn situ thermal processing of a coal formation using a movable heating element
US7100994Oct 24, 2002Sep 5, 2006Shell Oil Companyinjecting a heated fluid into the well bore, producing a second fluid from the formation, conducting an in situ conversion process in the selected section.
US7104319Oct 24, 2002Sep 12, 2006Shell Oil CompanyIn situ thermal processing of a heavy oil diatomite formation
US7114566Oct 24, 2002Oct 3, 2006Shell Oil CompanyHeat treatment using natural distributed combustor; oxidation of hydrocarbons to generate heat; pyrolysis
US7121341Oct 24, 2003Oct 17, 2006Shell Oil CompanyConductor-in-conduit temperature limited heaters
US7121342 *Apr 23, 2004Oct 17, 2006Shell Oil CompanyThermal processes for subsurface formations
US7128153Oct 24, 2002Oct 31, 2006Shell Oil CompanyTreatment of a hydrocarbon containing formation after heating
US7156176Oct 24, 2002Jan 2, 2007Shell Oil CompanyInstallation and use of removable heaters in a hydrocarbon containing formation
US7165615Oct 24, 2002Jan 23, 2007Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation using conductor-in-conduit heat sources with an electrically conductive material in the overburden
US7219734Oct 24, 2003May 22, 2007Shell Oil CompanyInhibiting wellbore deformation during in situ thermal processing of a hydrocarbon containing formation
US7225866Jan 31, 2006Jun 5, 2007Shell Oil CompanyIn situ thermal processing of an oil shale formation using a pattern of heat sources
US7320364Apr 22, 2005Jan 22, 2008Shell Oil CompanyInhibiting reflux in a heated well of an in situ conversion system
US7353872Apr 22, 2005Apr 8, 2008Shell Oil CompanyStart-up of temperature limited heaters using direct current (DC)
US7357180Apr 22, 2005Apr 15, 2008Shell Oil CompanyInhibiting effects of sloughing in wellbores
US7360588Oct 17, 2006Apr 22, 2008Shell Oil CompanyThermal processes for subsurface formations
US7370704Apr 22, 2005May 13, 2008Shell Oil CompanyTriaxial temperature limited heater
US7383877Apr 22, 2005Jun 10, 2008Shell Oil CompanyTemperature limited heaters with thermally conductive fluid used to heat subsurface formations
US7424915Apr 22, 2005Sep 16, 2008Shell Oil CompanyVacuum pumping of conductor-in-conduit heaters
US7431076Apr 22, 2005Oct 7, 2008Shell Oil CompanyTemperature limited heaters using modulated DC power
US7435037Apr 21, 2006Oct 14, 2008Shell Oil CompanyLow temperature barriers with heat interceptor wells for in situ processes
US7461691Jan 23, 2007Dec 9, 2008Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US7481274Apr 22, 2005Jan 27, 2009Shell Oil CompanyTemperature limited heaters with relatively constant current
US7490665Apr 22, 2005Feb 17, 2009Shell Oil CompanyVariable frequency temperature limited heaters
US7500528Apr 21, 2006Mar 10, 2009Shell Oil CompanyLow temperature barrier wellbores formed using water flushing
US7510000Apr 22, 2005Mar 31, 2009Shell Oil CompanyReducing viscosity of oil for production from a hydrocarbon containing formation
US7527094Apr 21, 2006May 5, 2009Shell Oil CompanyDouble barrier system for an in situ conversion process
US7533719Apr 20, 2007May 19, 2009Shell Oil CompanyWellhead with non-ferromagnetic materials
US7534926May 15, 2003May 19, 2009Board Of Regents, The University Of Texas SystemSoil remediation using heated vapors
US7540324Oct 19, 2007Jun 2, 2009Shell Oil CompanyHeating hydrocarbon containing formations in a checkerboard pattern staged process
US7546873Apr 21, 2006Jun 16, 2009Shell Oil CompanyLow temperature barriers for use with in situ processes
US7549470Oct 20, 2006Jun 23, 2009Shell Oil CompanySolution mining and heating by oxidation for treating hydrocarbon containing formations
US7556095Oct 20, 2006Jul 7, 2009Shell Oil CompanySolution mining dawsonite from hydrocarbon containing formations with a chelating agent
US7556096Oct 20, 2006Jul 7, 2009Shell Oil CompanyVarying heating in dawsonite zones in hydrocarbon containing formations
US7559367Oct 20, 2006Jul 14, 2009Shell Oil CompanyTemperature limited heater with a conduit substantially electrically isolated from the formation
US7559368Oct 20, 2006Jul 14, 2009Shell Oil CompanySolution mining systems and methods for treating hydrocarbon containing formations
US7562706Oct 20, 2006Jul 21, 2009Shell Oil CompanySystems and methods for producing hydrocarbons from tar sands formations
US7562707Oct 19, 2007Jul 21, 2009Shell Oil CompanyHeating hydrocarbon containing formations in a line drive staged process
US7575052Apr 21, 2006Aug 18, 2009Shell Oil CompanyIn situ conversion process utilizing a closed loop heating system
US7575053Apr 21, 2006Aug 18, 2009Shell Oil CompanyLow temperature monitoring system for subsurface barriers
US7581589Oct 20, 2006Sep 1, 2009Shell Oil CompanyMethods of producing alkylated hydrocarbons from an in situ heat treatment process liquid
US7584789Oct 20, 2006Sep 8, 2009Shell Oil CompanyMethods of cracking a crude product to produce additional crude products
US7591310Oct 20, 2006Sep 22, 2009Shell Oil CompanyMethods of hydrotreating a liquid stream to remove clogging compounds
US7597147Apr 20, 2007Oct 6, 2009Shell Oil CompanyTemperature limited heaters using phase transformation of ferromagnetic material
US7604052Apr 20, 2007Oct 20, 2009Shell Oil CompanyCompositions produced using an in situ heat treatment process
US7610962Apr 20, 2007Nov 3, 2009Shell Oil CompanyProviding acidic gas to a subterrean formation, such as oil shale, by heating from an electrical heater and injecting through an oil wellbore; one of the acidic acids includes hydrogen sulfide and is introduced at a pressure below the lithostatic pressure of the formation to produce fluids; efficiency
US7631689Apr 20, 2007Dec 15, 2009Shell Oil CompanySulfur barrier for use with in situ processes for treating formations
US7631690Oct 19, 2007Dec 15, 2009Shell Oil CompanyHeating hydrocarbon containing formations in a spiral startup staged sequence
US7635023Apr 20, 2007Dec 22, 2009Shell Oil CompanyTime sequenced heating of multiple layers in a hydrocarbon containing formation
US7635024Oct 19, 2007Dec 22, 2009Shell Oil CompanyHeating tar sands formations to visbreaking temperatures
US7635025Oct 20, 2006Dec 22, 2009Shell Oil CompanyCogeneration systems and processes for treating hydrocarbon containing formations
US7640980Apr 7, 2008Jan 5, 2010Shell Oil CompanyThermal processes for subsurface formations
US7644765Oct 19, 2007Jan 12, 2010Shell Oil CompanyHeating tar sands formations while controlling pressure
US7651331 *Mar 9, 2006Jan 26, 2010Shell Oil CompanyMulti-tube heat transfer system for the combustion of a fuel and heating of a process fluid and the use thereof
US7673681Oct 19, 2007Mar 9, 2010Shell Oil CompanyTreating tar sands formations with karsted zones
US7673786Apr 20, 2007Mar 9, 2010Shell Oil CompanyWelding shield for coupling heaters
US7677310Oct 19, 2007Mar 16, 2010Shell Oil CompanyCreating and maintaining a gas cap in tar sands formations
US7677314Oct 19, 2007Mar 16, 2010Shell Oil CompanyMethod of condensing vaporized water in situ to treat tar sands formations
US7681647Oct 19, 2007Mar 23, 2010Shell Oil CompanyMethod of producing drive fluid in situ in tar sands formations
US7683296Apr 20, 2007Mar 23, 2010Shell Oil CompanyAdjusting alloy compositions for selected properties in temperature limited heaters
US7703513Oct 19, 2007Apr 27, 2010Shell Oil CompanyWax barrier for use with in situ processes for treating formations
US7704070Mar 9, 2006Apr 27, 2010Shell Oil CompanyHeat transfer system for the combustion of a fuel heating of a process fluid and a process that uses same
US7717171Oct 19, 2007May 18, 2010Shell Oil CompanyMoving hydrocarbons through portions of tar sands formations with a fluid
US7730945Oct 19, 2007Jun 8, 2010Shell Oil CompanyUsing geothermal energy to heat a portion of a formation for an in situ heat treatment process
US7730946Oct 19, 2007Jun 8, 2010Shell Oil CompanyTreating tar sands formations with dolomite
US7730947Oct 19, 2007Jun 8, 2010Shell Oil CompanyCreating fluid injectivity in tar sands formations
US7735935Jun 1, 2007Jun 15, 2010Shell Oil CompanyIn situ thermal processing of an oil shale formation containing carbonate minerals
US7785427Apr 20, 2007Aug 31, 2010Shell Oil CompanyChromium, nickel, copper; niobium, iron manganese, nitrogen; nanonitrides; system for heating a subterranean formation;
US7793722Apr 20, 2007Sep 14, 2010Shell Oil CompanyNon-ferromagnetic overburden casing
US7798220Apr 18, 2008Sep 21, 2010Shell Oil CompanyIn situ heat treatment of a tar sands formation after drive process treatment
US7798221May 31, 2007Sep 21, 2010Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US7831133Apr 21, 2006Nov 9, 2010Shell Oil CompanyInsulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration
US7831134Apr 21, 2006Nov 9, 2010Shell Oil CompanyGrouped exposed metal heaters
US7832484Apr 18, 2008Nov 16, 2010Shell Oil CompanyMolten salt as a heat transfer fluid for heating a subsurface formation
US7841401Oct 19, 2007Nov 30, 2010Shell Oil CompanyGas injection to inhibit migration during an in situ heat treatment process
US7841408Apr 18, 2008Nov 30, 2010Shell Oil CompanyIn situ heat treatment from multiple layers of a tar sands formation
US7841425Apr 18, 2008Nov 30, 2010Shell Oil CompanyDrilling subsurface wellbores with cutting structures
US7845411Oct 19, 2007Dec 7, 2010Shell Oil CompanyIn situ heat treatment process utilizing a closed loop heating system
US7849922Apr 18, 2008Dec 14, 2010Shell Oil CompanyIn situ recovery from residually heated sections in a hydrocarbon containing formation
US7860377Apr 21, 2006Dec 28, 2010Shell Oil CompanySubsurface connection methods for subsurface heaters
US7866385Apr 20, 2007Jan 11, 2011Shell Oil CompanyPower systems utilizing the heat of produced formation fluid
US7866386Oct 13, 2008Jan 11, 2011Shell Oil Companyproduction of hydrocarbons, hydrogen, and/or other products from various subsurface formations such as hydrocarbon containing formations through use of oxidizing fluids and heat
US7866388Oct 13, 2008Jan 11, 2011Shell Oil CompanyHigh temperature methods for forming oxidizer fuel
US7912358Apr 20, 2007Mar 22, 2011Shell Oil CompanyAlternate energy source usage for in situ heat treatment processes
US7931086Apr 18, 2008Apr 26, 2011Shell Oil CompanyHeating systems for heating subsurface formations
US7942197Apr 21, 2006May 17, 2011Shell Oil CompanyMethods and systems for producing fluid from an in situ conversion process
US7942203Jan 4, 2010May 17, 2011Shell Oil CompanyThermal processes for subsurface formations
US7950453Apr 18, 2008May 31, 2011Shell Oil CompanyDownhole burner systems and methods for heating subsurface formations
US7986869Apr 21, 2006Jul 26, 2011Shell Oil CompanyVarying properties along lengths of temperature limited heaters
US8011451Oct 13, 2008Sep 6, 2011Shell Oil CompanyRanging methods for developing wellbores in subsurface formations
US8016589Mar 9, 2006Sep 13, 2011Shell Oil CompanyMethod of starting up a direct heating system for the flameless combustion of fuel and direct heating of a process fluid
US8027571Apr 21, 2006Sep 27, 2011Shell Oil CompanyIn situ conversion process systems utilizing wellbores in at least two regions of a formation
US8042610Apr 18, 2008Oct 25, 2011Shell Oil CompanyParallel heater system for subsurface formations
US8070840Apr 21, 2006Dec 6, 2011Shell Oil CompanyTreatment of gas from an in situ conversion process
US8083813Apr 20, 2007Dec 27, 2011Shell Oil CompanyMethods of producing transportation fuel
US8113272Oct 13, 2008Feb 14, 2012Shell Oil CompanyThree-phase heaters with common overburden sections for heating subsurface formations
US8146661Oct 13, 2008Apr 3, 2012Shell Oil CompanyCryogenic treatment of gas
US8146669Oct 13, 2008Apr 3, 2012Shell Oil CompanyMulti-step heater deployment in a subsurface formation
US8151880Dec 9, 2010Apr 10, 2012Shell Oil CompanyMethods of making transportation fuel
US8151907Apr 10, 2009Apr 10, 2012Shell Oil CompanyDual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations
US8162059Oct 13, 2008Apr 24, 2012Shell Oil CompanyInduction heaters used to heat subsurface formations
US8162405Apr 10, 2009Apr 24, 2012Shell Oil CompanyUsing tunnels for treating subsurface hydrocarbon containing formations
US8172335Apr 10, 2009May 8, 2012Shell Oil CompanyElectrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations
US8177305Apr 10, 2009May 15, 2012Shell Oil CompanyHeater connections in mines and tunnels for use in treating subsurface hydrocarbon containing formations
US8191630Apr 28, 2010Jun 5, 2012Shell Oil CompanyCreating fluid injectivity in tar sands formations
US8192682Apr 26, 2010Jun 5, 2012Shell Oil CompanyHigh strength alloys
US8196658Oct 13, 2008Jun 12, 2012Shell Oil CompanyIrregular spacing of heat sources for treating hydrocarbon containing formations
US8220539Oct 9, 2009Jul 17, 2012Shell Oil CompanyControlling hydrogen pressure in self-regulating nuclear reactors used to treat a subsurface formation
US8224163Oct 24, 2003Jul 17, 2012Shell Oil CompanyVariable frequency temperature limited heaters
US8224164Oct 24, 2003Jul 17, 2012Shell Oil CompanyInsulated conductor temperature limited heaters
US8224165Apr 21, 2006Jul 17, 2012Shell Oil CompanyTemperature limited heater utilizing non-ferromagnetic conductor
US8225866Jul 21, 2010Jul 24, 2012Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US8230927May 16, 2011Jul 31, 2012Shell Oil CompanyMethods and systems for producing fluid from an in situ conversion process
US8233782Sep 29, 2010Jul 31, 2012Shell Oil CompanyGrouped exposed metal heaters
US8238730Oct 24, 2003Aug 7, 2012Shell Oil CompanyHigh voltage temperature limited heaters
US8240774Oct 13, 2008Aug 14, 2012Shell Oil CompanySolution mining and in situ treatment of nahcolite beds
US8256512Oct 9, 2009Sep 4, 2012Shell Oil CompanyMovable heaters for treating subsurface hydrocarbon containing formations
US8261832Oct 9, 2009Sep 11, 2012Shell Oil CompanyHeating subsurface formations with fluids
US8267170Oct 9, 2009Sep 18, 2012Shell Oil CompanyOffset barrier wells in subsurface formations
US8267185Oct 9, 2009Sep 18, 2012Shell Oil CompanyCirculated heated transfer fluid systems used to treat a subsurface formation
US8272455Oct 13, 2008Sep 25, 2012Shell Oil CompanyMethods for forming wellbores in heated formations
US8276661Oct 13, 2008Oct 2, 2012Shell Oil CompanyHeating subsurface formations by oxidizing fuel on a fuel carrier
US8281861Oct 9, 2009Oct 9, 2012Shell Oil CompanyCirculated heated transfer fluid heating of subsurface hydrocarbon formations
US8327681Apr 18, 2008Dec 11, 2012Shell Oil CompanyWellbore manufacturing processes for in situ heat treatment processes
US8327932Apr 9, 2010Dec 11, 2012Shell Oil CompanyRecovering energy from a subsurface formation
US8353347Oct 9, 2009Jan 15, 2013Shell Oil CompanyDeployment of insulated conductors for treating subsurface formations
US8355623Apr 22, 2005Jan 15, 2013Shell Oil CompanyTemperature limited heaters with high power factors
US8381815Apr 18, 2008Feb 26, 2013Shell Oil CompanyProduction from multiple zones of a tar sands formation
US8434555Apr 9, 2010May 7, 2013Shell Oil CompanyIrregular pattern treatment of a subsurface formation
US8448707Apr 9, 2010May 28, 2013Shell Oil CompanyNon-conducting heater casings
US8459359Apr 18, 2008Jun 11, 2013Shell Oil CompanyTreating nahcolite containing formations and saline zones
US8485252Jul 11, 2012Jul 16, 2013Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US8536497Oct 13, 2008Sep 17, 2013Shell Oil CompanyMethods for forming long subsurface heaters
US8555971May 31, 2012Oct 15, 2013Shell Oil CompanyTreating tar sands formations with dolomite
US8562078Nov 25, 2009Oct 22, 2013Shell Oil CompanyHydrocarbon production from mines and tunnels used in treating subsurface hydrocarbon containing formations
US8579031May 17, 2011Nov 12, 2013Shell Oil CompanyThermal processes for subsurface formations
US8606091Oct 20, 2006Dec 10, 2013Shell Oil CompanySubsurface heaters with low sulfidation rates
US8627887Dec 8, 2008Jan 14, 2014Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US8631866Apr 8, 2011Jan 21, 2014Shell Oil CompanyLeak detection in circulated fluid systems for heating subsurface formations
US8636323Nov 25, 2009Jan 28, 2014Shell Oil CompanyMines and tunnels for use in treating subsurface hydrocarbon containing formations
US8662175Apr 18, 2008Mar 4, 2014Shell Oil CompanyVarying properties of in situ heat treatment of a tar sands formation based on assessed viscosities
US8701768Apr 8, 2011Apr 22, 2014Shell Oil CompanyMethods for treating hydrocarbon formations
US8701769Apr 8, 2011Apr 22, 2014Shell Oil CompanyMethods for treating hydrocarbon formations based on geology
US8739874Apr 8, 2011Jun 3, 2014Shell Oil CompanyMethods for heating with slots in hydrocarbon formations
US8752904Apr 10, 2009Jun 17, 2014Shell Oil CompanyHeated fluid flow in mines and tunnels used in heating subsurface hydrocarbon containing formations
US20090056696 *Jul 18, 2008Mar 5, 2009Abdul Wahid MunshiFlameless combustion heater
US20130020080 *Jul 20, 2011Jan 24, 2013Stewart Albert EMethod for in situ extraction of hydrocarbon materials
USRE35696 *Sep 28, 1995Dec 23, 1997Shell Oil CompanyHeat injection process
EP0067079A1 *Apr 29, 1982Dec 15, 1982L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges ClaudeProcess and installation for the underground gasification of coal
Classifications
U.S. Classification166/302, 166/59, 431/215, 126/91.00R, 126/360.2
International ClassificationE21B36/02, E21B36/00
Cooperative ClassificationE21B36/02
European ClassificationE21B36/02