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Publication numberUS3284281 A
Publication typeGrant
Publication dateNov 8, 1966
Filing dateAug 31, 1964
Priority dateAug 31, 1964
Publication numberUS 3284281 A, US 3284281A, US-A-3284281, US3284281 A, US3284281A
InventorsThomas Rosswell W
Original AssigneePhillips Petroleum Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Production of oil from oil shale through fractures
US 3284281 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

T T@ j "f-T T T* Y Nov. 8, A1966 PRODUCTION 0F OIL. FROM o IL sHALE THRUGH FRACTURES THOMAS 23,'284Q2s1 Filed Aug. 3 1. 1964 INVENTOR. R.w. THOMAS 3,234,281 v PRODUCTION or on.v FROM on. suALE THROUGH raacrunas Rosswell W. Thomas, Bartlesville, Okla., assignor to Phillips Petroleum Company, a corporation of Delaware Filed Aug. 3l, 1964, Ser. N0..393,1l3

8 Clan'. .(Cl. 16S-f2) The invention relates to the production of oil or fluid hydrocarbons from oil shale (shale containing kerogcn).

The productiozrof oil from oil shale by heating the shale by various means such as steam, down-hole combustion of a combustible gaseous mixture, an

electrical' resistance hcater,'an d injection of hot gases` other than stca'm has been attempted with little success. In situ combustion of shale 'has also been relatively unsuccessful because of the impervious andthe plastic nature ofthe shale. Fracturingof the shale prior to the application of heat thereto by in situ lcombustion or other means has been practiced with little success because the shale swells upon heating with consequent partial or complete closure of the fractures.

An early disclosure of fracturing oil shale and applying heat to the fractured shale i's found in Hoover et al., U.S. Patent 1,422,204, issued .luly l-, i922.

This invention is concerned with a novel method of producing fluid hydrocarbons from shale containing kerogen by application of heat thereto by in situ combustion or by other-means.

f After the shale hasbeen properly heated in an annular section extending substantially into the stratu'm, such as a foot or more, and substantial 'swelling has ensued, fracturing is effected in conventional manner utilizing any suitable trac'turing uid.-- Hot fluids such as air, CO2, N3 combustion gas, oii, steam', supcrheated water, or hot liquids, are the preferred fracturing means. .Fracturing is effected at a selected levelin the o il shale stratum,

After initial fraeturing the stratum is again heated, preferably, to the prescribed temperature so' as to effect cracking of the kerogen and further swelling of the stratum with extension-.of the swollen section deeper into the stratum along or beyond the fractures. The fractures are extended deeper into`the strat-um by applying fractur'ing pressure in the fractures adjacent the well, followed by further heating to extend the volume of shale within which kcrogen can eventually be heated above the cracking tempcrature and production of oil and/or gas thus achieved.-

Accordingly, an object of the-invention is to provide a novel process for producing uid hydrocarbons from the ke'rogen existing in au oil shale straturn.V A further Y object is to provide a novel process for utilizing a seq-uential'combinationof heating and fracturing in the produc tion of'oil from oilshale Other objects of the inventionv will become apparent upon consideration of the accompanying disclosure. i

A broad aspect of the invention comprises heating to an elevatcdtemperature a shale stratum containing kerogen around a well penetrating the stratum thereby causing l s'wellin" of theshale in asection adjacent the well, folj lowed by fracturing of the shale thru the swollensection and optionally pfopping the resulting fractures open, thereafter further heating the shale around the well and the fractures so as to crack the izerogen therein and release fluid hydrocarbons which .flow into the same well or another well thru the fractures, and recovering the hydrocarbon fluids fromnhe sameor an adjacent well. The initial l or subsequent heating of the shale is accomplished by any conventional means such asby injecting superheated steam so vthat the supcrhe'atcd steam passes ir: contact with the fracture system between the wells produces oil, gas, anda shale, burning a combustible gaseous mixture adjacent the t shale as in a down-hole heater, injectinga hot gas such as air or combustion gas, or use of an electrisal down-hole heater, or by combustion of some con-tained kerogen and/ or lits decomposition products- Shale swells and becomes more plastic as -it is heated and the contained kerogcn begins to crack at a temperature of about. 400 -F. in a steam-containing ambient (247 Fracturing :it more than one zone within the stratum and simultaneously heating the kerogen adjacent the fracture zones is within the scope. of the invention.` The fracturing fiuid(s) and the heating `iiuid(s) may or may not be the same. Part or all of the heating may be accomplished by combustion of the hydrocarbons already in the formation to be produced'.

Another embodiment of the invention comprises sequentially heating, swelling, fracturing, optionally. propping, and producing two or more spacedfapart wells in an oil shale strat'umand repea'ting the heating, swelling, frac,- turing, propping, and producingsteps in one lor more wells until flow paths, which remain open upon additional heating, have been established between two or more wells. These operations in the two or more wells may or may not be conducted simultaneously. The heating of the kerogen to the prescribed temperature cracks the kerogen and. A

leaves a carbon' residue. Heating the stratum along'the carbon residue, and extends the `ol-unie of shale to which access. may be had by heating r ieans, and/or for extending pressure-induced fractures. After establishment of sullicient permeability to permit continued ow of liuids,

hydrocarbon production can be effected by passing steam or other hot gas thru the fractures from one well to another, vor by igniting the stratum adjacent one of the wells to establish a combustion zone and moving the'combustion zone along the fractures and within the stratum to the other well. The combustion zone isestablished in conj'enticnal manner by heating the hydrocarbon material iu the stratum to ignition temperature and contacting the hot material with an Og-cont-ajning, combustion supporting field, such as air. After the combustion zone has been established, the same is moved thru the stratum by either direct or linverse drive. Using direct drive, the oxidant is injected thru the ignition well and combustion products and produced hydrocarbon fluids are recovered thru an other well. With inverse drive, the combustionsupporting gas is injected thru another well from which its passes thru the fractures to the combustion zone adjacent the ig nition well, thereby feeding the combustion zone and caus-A p.s.i.g. saturation prcssv'e of steam'land cracking is about 90% complete at about 700 FQ ln 'a dry ambient, the keroge-n in shale commences cracking at about 600 F.

and cracking of kerogen produces both gaseous and liquid hydrocarbons. The shale is heated to at least- 400 F. when heating in a steam ambient, as with steam injection and increases with increasing temperature. The` heating ing same to move toward the injection well.

A more complete understanding of the invention may be obtained by reference to the'a'ccompa'nying schematic drawing of which FIGURE/1 is a sectional elevation. thru a well penetrating 'an oil shale and FIGURE 2 is a similar view showing a pair of wells penetrating an oilv shale. The penetration may be partial orcomplete.

Referring to FIGURE l an oil shale 10 is penetra-ted by a well l12 which extends 'into stratum 14. Well 12 is provided with a easing 16 which extends to the top of stratum 10 and may extend thru this stratum if desired, in which case the casing i; perforated for fracturing and injection and withdrawal of fluids in known manner. A

tubing string 18le'xtends from well head 20 substantially to the bottom of the well forming an annulus 22 with' casing 1.6. When .down-hole heatingmcans is utilized in the process, a downihole heaterl 24 is' positioned on tubing string 18 or on aseparate suing of pip'e. Line 26 Q ;gfffiS-reellso thata combustion wave `is movedl thru the fractures and adjacent stratum 10 to well 38. In

"allv connects with tubing string 18 at or above the'wcll he:

for injection of heating and/ or fracturing tluid or for with; drawal of these fluids or of produced hydrocarbons` One or more packers may be used between tubing and and casing or formation. Line 28oonnccts with casing 15 4and annulus 22 for injection and/or withdrawal of fluids from the annulus. Fractures 30 are shown extending radially outwardlyffrom the well, representing one stage of the operation.

In operating with the arrangement shown in FIGURE l, heat is applied to stratum 10 adjacent the well by any suitable means as heretoforeset forth, as -by means of a down-hole heater 24, until a substantial annular section of shale around well 16, designated 32, has been elfective- 'ly heated and swollen. The swelling rma-y produce frac`- tures within the oil shale stratum outside of annular section 32 and/or in the overburden. `This fracturing aids 'in the production of' oil from the shale;

to extend the swollen shale area beyond section 32. After a substantial period of production in this manner, fractures 30 are enlarged in the area beyond section .32 and extended further into stratum 10 with or without propping agent injected into the extended fractures. This repettion of heating,fracturing,'optional propping, and production from well 16 is continued as `long as it is economic.

In performing the fracturing and optional propping` step, it may be advisable to utilize other wells which are suflciently close to well 12 to permit extending the fractures to the adjacent wells.

Referring to FIGURE 2, an oil stratum 10 overlying l an'underburden 14 is penetrated L" wells 36l and 38.

Well 36 has a casing 40 extending about to the up *r level of stratum 10 -and a tubing string 42'extendi'ng approximately to the bottom ofthe'well'. Well 38 is simi- -larly equippd with a casing 4'4,` a'nd a tubing string 45. Line 48 connects with casing 40 near the well'head and line 50 connectswith casing 44 in similar manner. These -lincs :provide for injection and withdrawal of fluids from the` well annuli. Lines 52 and 54 connect'with tubing strings 42 and 46, respectively, at or near the well heads for injection and withdrawal of tiuids. A fracture 51.3 tem designated 56 eventually is extended from well to well in stratum l0 and swollen area 58 is shown at th'at stag-3` of the process after fracturing and heating has been anv plied to the stratum between wells and passage of oir or other fluids between the wells is thereby made possible.

In the arrangement shown in FIGURE 2, both wells 36 and 38 are operated in the marmer described in con-Y nection with well 12 of FIGURE 1. Of course, it is to be understood that the successive iracturing and optional' propping steps are sequenced with the heating and production steps as heretofore described until suitable communication has been established for passage of uids between the wells. e

A heating tluid maythen 'ue `injected thru the fractures 56 from one well to another and produced fluids recov- "G-"LF-"fswellinga substantial section of shale adjacent the ered thru theother well. This heating duid may ooznprise 4superheated stearn, hot combustion gas, hot air, or any suitable means. In the event hot air is injected, for

example, thru well 36 a combustion zone is established situations nwhich hot air does not readily ignitethe kero gen and lfluid hydrocarbon in the stratum adjacent well 36, tubing string 42 may be withdrawn from within the stratum and ignition initiated by a charcoal pack soaked in heavy oil mich may be introduced to the well bore within stratum 10 and burned to establish a combustion zone in the adjacent stratum in accordance with conventional methods or by any suitable means. On the oombustion zone is established, the injection of'air thru well 36 is continued for a direct drive of the combustion front thru the stratum to well 3S or air is injected thruwell 38 andproduced fluids are recovered from well 36 thru tubing string 42. l

The propagation of a combustion .zone thruA the stratum between wells produces additional tluid hydrocarbons by cracking thelerogen in the adjacent stratum and this produces additional porous. coke which may be burned.4

on a second pass of. a combustion zone thru the stratum While FIGURE 2 shows only a pair of spaced-apart' wells, the process may be operated with any well pattern such as a 5, 7, or 9spot pattern or a pattern of parallel lines of wells, well 36 representing acentral well in a circular pattern in which a ring of wells 38 surround the central well or wells 36 and 33 may be representative of rows of parallel wells withothcr parallel rows adjacent these wells.

Certain modifications of the invention will become ap,- parent to those skilled in the art and the illustrative details disclosed are' not to be' construed as imposing unn'ec essary limitations on the invention.A

I claim:

l. The process for producing oil froinhoil shale containing kerogenwhich comprises the steps of:

(-1) heating said shale around a well-penetrating same tc an elevated temperature so as to swell a section of the shale around said well;

(2) fracturng the shale thru and beyond the .swollen section radially outwardly irom'said well; i (3) following step (2v), again heating the shale around said well so as to crack the i:erogen therein and cause .released hydrocarbon fluids to flow through said fracture into said well;

(4) recovering said hydrocarbon fluids from said well;

(5) continuing the heating of 'step (3) until the shale adjacent the area of the fracture remote from said well swells and closes the fractures in said area;

(6) following s tep (5), again .applying tiuid fracturing pressure on the shale around said well at fracture level so as to extend said fracture deeper into said shale; and

(7) repeating steps (4), (5), and (6).

2. The process of claim 1 wherein theheating in steps i (1) and (3) is effected by burning a combustible fuel-air mixture downhole in said welL 3. The process of claim 1 wherein the heating in steps (1) and (3) is effected by a downhole electric heater.

4. The process of claim 1 wherein the heating in steps (l) and (3) is effected by injecting-steam at a tempera 'ture 'of atleast 400 F. thru'rheA well into contact with the kerogen-contahting formation.

5. The process of claim 1 including the step cf injecting a propping 'agent into the fractures after each yf racturing step.

6. A process for producing oil from oil shalt: containing kerogen and penetrated by a pair of wells which comprises the steps of:

(1) heating said shale around each of said Wells at least to the swelling temperature of said shale thereby wells; (2) fractun'ng the shale thru and beyond the swollen section radially away from each well at substantially the same bedding plane;

(3) following step (2), .again heating the shale around each well so as to crack .s ,aid kerogen, causing' result- A ing tluid hydrocarbons to ow thru the fractures into said wells, and extending the swollen section deeper into the shale; (4) following step (3) again applying uidfmcturing .pressureto the shale in each well at the level of the existing fractures s o as to extend the fractures substantially beyond the expanded swollen section;

(5) following step (4), again heating thc shale around step (6) so to produce additional uid hydro-V carbons from the intervening shale; and

duced by the foregoing steps.

` (8) recoslering uid hydrocarbons from sid wells pro- I 'i he process of claim` 6 including the step of positioning a propping agent into the fractures with each frat:` turing Step.

8. The' process of claim 6 including the steps of:

(9) ignitng the shale adjacent the fracture at one well to establish a combustion zone;

(10) moving said combustion zone thru Said shale ad` n jacent said fracture toward the other wellby feeding air thereto so Aas to produce additional uid hydro. carbons; and (ll) recovering said additional hydrocarbons from atA least one of said wells.

References Cited by the Ezaniiner I UNITED STATES PATENTS 2,876,838 3/1959 l ililliat'rls 166-11 2,880,802O y 4/1959 Carpenter 166--11 2,952,450 4/1960 YPurre 1664-11 X 3,105,545 10/1963 Prats et al 166-39 3,137,347 6./1964 Parker 166-39 JACOB L NACKENOFF, Primary Examiner. CHARLES E. lOCONIELI., Examiner. i S. J. I VQVOSAD,h Assistant Exnmner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2876838 *May 23, 1956Mar 10, 1959Jersey Prod Res CoSecondary recovery process
US2880802 *Mar 28, 1955Apr 7, 1959Phillips Petroleum CoRecovery of hydrocarbons from oil-bearing strata
US2952450 *Apr 30, 1959Sep 13, 1960Phillips Petroleum CoIn situ exploitation of lignite using steam
US3105545 *Nov 21, 1960Oct 1, 1963Shell Oil CoMethod of heating underground formations
US3137347 *May 9, 1960Jun 16, 1964Phillips Petroleum CoIn situ electrolinking of oil shale
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US3358756 *Mar 12, 1965Dec 19, 1967Shell Oil CoMethod for in situ recovery of solid or semi-solid petroleum deposits
US3360045 *Dec 15, 1965Dec 26, 1967Phillips Petroleum CoRecovery of heavy crude oil by steam drive
US3379250 *Sep 9, 1966Apr 23, 1968Shell Oil CoThermally controlling fracturing
US3382922 *Aug 31, 1966May 14, 1968Phillips Petroleum CoProduction of oil shale by in situ pyrolysis
US3388742 *Apr 22, 1965Jun 18, 1968Phillips Petroleum CoTracing subterranean communication paths
US3399722 *May 24, 1967Sep 3, 1968Pan American Petroleum CorpRecovery of petroleum by a cyclic thermal method
US3400762 *Jul 8, 1966Sep 10, 1968Phillips Petroleum CoIn situ thermal recovery of oil from an oil shale
US3409077 *Sep 29, 1966Nov 5, 1968Shell Oil CoThermal method of recovering hydrocarbons from an underground hydrocarbon-containing formation
US3422893 *Oct 3, 1966Jan 21, 1969Gulf Research Development CoConduction heating of formations
US3442333 *Oct 11, 1967May 6, 1969Phillips Petroleum CoWellbore visbreaking of heavy crude oils
US3455391 *Sep 12, 1966Jul 15, 1969Shell Oil CoProcess for horizontally fracturing subterranean earth formations
US3460621 *May 22, 1967Aug 12, 1969Pan American Petroleum CorpCyclic steam injection and gas drive
US3465826 *Oct 19, 1967Sep 9, 1969Gulf Research Development CoHigh-temperature water injection
US3468376 *Feb 10, 1967Sep 23, 1969Mobil Oil CorpThermal conversion of oil shale into recoverable hydrocarbons
US3474863 *Jul 28, 1967Oct 28, 1969Shell Oil CoShale oil extraction process
US3481398 *Feb 28, 1967Dec 2, 1969Shell Oil CoPermeabilizing by acidizing oil shale tuffaceous streaks in and oil recovery therefrom
US3499490 *Apr 3, 1967Mar 10, 1970Phillips Petroleum CoMethod for producing oxygenated products from oil shale
US3500913 *Oct 30, 1968Mar 17, 1970Shell Oil CoMethod of recovering liquefiable components from a subterranean earth formation
US3501201 *Oct 30, 1968Mar 17, 1970Shell Oil CoMethod of producing shale oil from a subterranean oil shale formation
US3508613 *Nov 7, 1968Apr 28, 1970Us InteriorChemical disaggregation of rock containing clay minerals
US3513914 *Sep 30, 1968May 26, 1970Shell Oil CoMethod for producing shale oil from an oil shale formation
US3515213 *Apr 19, 1967Jun 2, 1970Shell Oil CoShale oil recovery process using heated oil-miscible fluids
US3516495 *Nov 29, 1967Jun 23, 1970Exxon Research Engineering CoRecovery of shale oil
US3521709 *Apr 3, 1967Jul 28, 1970Phillips Petroleum CoProducing oil from oil shale by heating with hot gases
US3528501 *Aug 4, 1967Sep 15, 1970Phillips Petroleum CoRecovery of oil from oil shale
US3581821 *May 9, 1969Jun 1, 1971Petra Flow IncCryothermal process for the recovery of oil
US3593791 *Sep 15, 1969Jul 20, 1971Phillips Petroleum CoHorizontal fracturing techniques for bitumen recovery
US3682246 *Jan 19, 1971Aug 8, 1972Shell Oil CoFracturing to interconnect wells
US3695354 *Mar 30, 1970Oct 3, 1972Shell Oil CoHalogenating extraction of oil from oil shale
US3739851 *Nov 24, 1971Jun 19, 1973Shell Oil CoMethod of producing oil from an oil shale formation
US3882941 *Dec 17, 1973May 13, 1975Cities Service Res & Dev CoIn situ production of bitumen from oil shale
US4192381 *Nov 28, 1978Mar 11, 1980Occidental Oil Shale, Inc.In situ retorting with high temperature oxygen supplying gas
US4384613 *Oct 24, 1980May 24, 1983Terra Tek, Inc.Method of in-situ retorting of carbonaceous material for recovery of organic liquids and gases
US4458757 *Apr 25, 1983Jul 10, 1984Exxon Research And Engineering Co.In situ shale-oil recovery process
US4491179 *Apr 26, 1982Jan 1, 1985Pirson Sylvain JMethod for oil recovery by in situ exfoliation drive
US4886118 *Feb 17, 1988Dec 12, 1989Shell Oil CompanyConductively heating a subterranean oil shale to create permeability and subsequently produce oil
US4896725 *Jun 13, 1988Jan 30, 1990Parker Marvin TIn-well heat exchange method for improved recovery of subterranean fluids with poor flowability
US5255742 *Jun 12, 1992Oct 26, 1993Shell Oil CompanyHeat injection process
US5297626 *Jun 12, 1992Mar 29, 1994Shell Oil CompanyOil recovery process
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US7841425Nov 30, 2010Shell Oil CompanyDrilling subsurface wellbores with cutting structures
US7845411Dec 7, 2010Shell Oil CompanyIn situ heat treatment process utilizing a closed loop heating system
US7849922Dec 14, 2010Shell Oil CompanyIn situ recovery from residually heated sections in a hydrocarbon containing formation
US7857056Oct 15, 2008Dec 28, 2010Exxonmobil Upstream Research CompanyHydrocarbon recovery from impermeable oil shales using sets of fluid-heated fractures
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 CompanyIn situ oxidation of subsurface formations
US7866388Jan 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
US7942203May 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
US8011451Sep 6, 2011Shell Oil CompanyRanging methods for developing wellbores in subsurface formations
US8027571Sep 27, 2011Shell Oil CompanyIn situ conversion process systems utilizing wellbores in at least two regions of a formation
US8042610Oct 25, 2011Shell Oil CompanyParallel heater system for subsurface formations
US8070840Apr 21, 2006Dec 6, 2011Shell Oil CompanyTreatment of gas from an in situ conversion process
US8082995Dec 27, 2011Exxonmobil Upstream Research CompanyOptimization of untreated oil shale geometry to control subsidence
US8083813Dec 27, 2011Shell Oil CompanyMethods of producing transportation fuel
US8087460Jan 3, 2012Exxonmobil Upstream Research CompanyGranular electrical connections for in situ formation heating
US8104537Jan 31, 2012Exxonmobil Upstream Research CompanyMethod of developing subsurface freeze zone
US8113272Oct 13, 2008Feb 14, 2012Shell Oil CompanyThree-phase heaters with common overburden sections for heating subsurface formations
US8122955Apr 18, 2008Feb 28, 2012Exxonmobil Upstream Research CompanyDownhole burners for in situ conversion of organic-rich rock formations
US8146661Oct 13, 2008Apr 3, 2012Shell Oil CompanyCryogenic treatment of gas
US8146664May 21, 2008Apr 3, 2012Exxonmobil Upstream Research CompanyUtilization of low BTU gas generated during in situ heating of organic-rich rock
US8146669Oct 13, 2008Apr 3, 2012Shell Oil CompanyMulti-step heater deployment in a subsurface formation
US8151877Apr 18, 2008Apr 10, 2012Exxonmobil Upstream Research CompanyDownhole burner wells for in situ conversion of organic-rich rock formations
US8151880Dec 9, 2010Apr 10, 2012Shell Oil CompanyMethods of making transportation fuel
US8151884Oct 10, 2007Apr 10, 2012Exxonmobil Upstream Research CompanyCombined development of oil shale by in situ heating with a deeper hydrocarbon resource
US8151907Apr 10, 2009Apr 10, 2012Shell Oil CompanyDual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations
US8162059Apr 24, 2012Shell Oil CompanyInduction heaters used to heat subsurface formations
US8162405Apr 24, 2012Shell Oil CompanyUsing tunnels for treating subsurface hydrocarbon containing formations
US8172335May 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
US8196658Jun 12, 2012Shell Oil CompanyIrregular spacing of heat sources for treating hydrocarbon containing formations
US8220539Jul 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
US8224165Jul 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
US8230929Jul 31, 2012Exxonmobil Upstream Research CompanyMethods of producing hydrocarbons for substantially constant composition gas generation
US8233782Jul 31, 2012Shell Oil CompanyGrouped exposed metal heaters
US8238730Aug 7, 2012Shell Oil CompanyHigh voltage temperature limited heaters
US8240774Aug 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
US8261832Sep 11, 2012Shell Oil CompanyHeating subsurface formations with fluids
US8267170Sep 18, 2012Shell Oil CompanyOffset barrier wells in subsurface formations
US8267185Sep 18, 2012Shell Oil CompanyCirculated heated transfer fluid systems used to treat a subsurface formation
US8272455Sep 25, 2012Shell Oil CompanyMethods for forming wellbores in heated formations
US8276661Oct 2, 2012Shell Oil CompanyHeating subsurface formations by oxidizing fuel on a fuel carrier
US8281861Oct 9, 2012Shell Oil CompanyCirculated heated transfer fluid heating of subsurface hydrocarbon formations
US8327681Dec 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
US8355623Jan 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
US8448707May 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
US8540020Apr 21, 2010Sep 24, 2013Exxonmobil Upstream Research CompanyConverting organic matter from a subterranean formation into producible hydrocarbons by controlling production operations based on availability of one or more production resources
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
US8596355Dec 10, 2010Dec 3, 2013Exxonmobil Upstream Research CompanyOptimized well spacing for in situ shale oil development
US8606091Oct 20, 2006Dec 10, 2013Shell Oil CompanySubsurface heaters with low sulfidation rates
US8608249Apr 26, 2010Dec 17, 2013Shell Oil CompanyIn situ thermal processing of an oil shale formation
US8616279Jan 7, 2010Dec 31, 2013Exxonmobil Upstream Research CompanyWater treatment following shale oil production by in situ heating
US8616280Jun 17, 2011Dec 31, 2013Exxonmobil Upstream Research CompanyWellbore mechanical integrity for in situ pyrolysis
US8622127Jun 17, 2011Jan 7, 2014Exxonmobil Upstream Research CompanyOlefin reduction for in situ pyrolysis oil generation
US8622133Mar 7, 2008Jan 7, 2014Exxonmobil Upstream Research CompanyResistive heater for in situ formation heating
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
US8641150Dec 11, 2009Feb 4, 2014Exxonmobil Upstream Research CompanyIn situ co-development of oil shale with mineral recovery
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
US8770284Apr 19, 2013Jul 8, 2014Exxonmobil Upstream Research CompanySystems and methods of detecting an intersection between a wellbore and a subterranean structure that includes a marker material
US8789586Jul 12, 2013Jul 29, 2014Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US8791396Apr 18, 2008Jul 29, 2014Shell Oil CompanyFloating insulated conductors for heating subsurface formations
US8820406Apr 8, 2011Sep 2, 2014Shell Oil CompanyElectrodes for electrical current flow heating of subsurface formations with conductive material in wellbore
US8833453Apr 8, 2011Sep 16, 2014Shell Oil CompanyElectrodes for electrical current flow heating of subsurface formations with tapered copper thickness
US8851170Apr 9, 2010Oct 7, 2014Shell Oil CompanyHeater assisted fluid treatment of a subsurface formation
US8857506May 24, 2013Oct 14, 2014Shell Oil CompanyAlternate energy source usage methods for in situ heat treatment processes
US8863839Nov 15, 2010Oct 21, 2014Exxonmobil Upstream Research CompanyEnhanced convection for in situ pyrolysis of organic-rich rock formations
US8863840 *Mar 3, 2012Oct 21, 2014Halliburton Energy Services, Inc.Thermal recovery of shallow bitumen through increased permeability inclusions
US8875789Aug 8, 2011Nov 4, 2014Exxonmobil Upstream Research CompanyProcess for producing hydrocarbon fluids combining in situ heating, a power plant and a gas plant
US8881806Oct 9, 2009Nov 11, 2014Shell Oil CompanySystems and methods for treating a subsurface formation with electrical conductors
US8955585Sep 21, 2012Feb 17, 2015Halliburton Energy Services, Inc.Forming inclusions in selected azimuthal orientations from a casing section
US8973660Aug 12, 2011Mar 10, 2015Baker Hughes IncorporatedApparatus, system and method for injecting a fluid into a formation downhole
US9016370Apr 6, 2012Apr 28, 2015Shell Oil CompanyPartial solution mining of hydrocarbon containing layers prior to in situ heat treatment
US9022109Jan 21, 2014May 5, 2015Shell Oil CompanyLeak detection in circulated fluid systems for heating subsurface formations
US9022118Oct 9, 2009May 5, 2015Shell Oil CompanyDouble insulated heaters for treating subsurface formations
US9033042Apr 8, 2011May 19, 2015Shell Oil CompanyForming bitumen barriers in subsurface hydrocarbon formations
US9051829Oct 9, 2009Jun 9, 2015Shell Oil CompanyPerforated electrical conductors for treating subsurface formations
US9080441Oct 26, 2012Jul 14, 2015Exxonmobil Upstream Research CompanyMultiple electrical connections to optimize heating for in situ pyrolysis
US9127523Apr 8, 2011Sep 8, 2015Shell Oil CompanyBarrier methods for use in subsurface hydrocarbon formations
US9127538Apr 8, 2011Sep 8, 2015Shell Oil CompanyMethodologies for treatment of hydrocarbon formations using staged pyrolyzation
US9129728Oct 9, 2009Sep 8, 2015Shell Oil CompanySystems and methods of forming subsurface wellbores
US9181780Apr 18, 2008Nov 10, 2015Shell Oil CompanyControlling and assessing pressure conditions during treatment of tar sands formations
US9309755Oct 4, 2012Apr 12, 2016Shell Oil CompanyThermal expansion accommodation for circulated fluid systems used to heat subsurface formations
US9347302Nov 12, 2013May 24, 2016Exxonmobil Upstream Research CompanyResistive heater for in situ formation heating
US9394772Sep 17, 2014Jul 19, 2016Exxonmobil Upstream Research CompanySystems and methods for in situ resistive heating of organic matter in a subterranean formation
US9399905May 4, 2015Jul 26, 2016Shell Oil CompanyLeak detection in circulated fluid systems for heating subsurface formations
US20010049342 *Mar 19, 2001Dec 6, 2001Passey Quinn R.Method for production of hydrocarbons from organic-rich rock
US20060162923 *Jan 9, 2006Jul 27, 2006World Energy Systems, Inc.Method for producing viscous hydrocarbon using incremental fracturing
US20070137857 *Apr 21, 2006Jun 21, 2007Vinegar Harold JLow temperature monitoring system for subsurface barriers
US20070187093 *Jan 26, 2007Aug 16, 2007Pfefferle William CMethod for recovery of stranded oil
US20070187094 *Feb 9, 2007Aug 16, 2007Pfefferle William CMethod for CAGD recovery of heavy oil
US20080087420 *Oct 10, 2007Apr 17, 2008Kaminsky Robert DOptimized well spacing for in situ shale oil development
US20080087426 *Oct 10, 2007Apr 17, 2008Kaminsky Robert DMethod of developing a subsurface freeze zone using formation fractures
US20080207970 *Oct 10, 2007Aug 28, 2008Meurer William PHeating an organic-rich rock formation in situ to produce products with improved properties
US20080230219 *Mar 7, 2008Sep 25, 2008Kaminsky Robert DResistive heater for in situ formation heating
US20080271885 *Mar 7, 2008Nov 6, 2008Kaminsky Robert DGranular electrical connections for in situ formation heating
US20080290719 *May 21, 2008Nov 27, 2008Kaminsky Robert DProcess for producing Hydrocarbon fluids combining in situ heating, a power plant and a gas plant
US20090038795 *Oct 15, 2008Feb 12, 2009Kaminsky Robert DHydrocarbon Recovery From Impermeable Oil Shales Using Sets of Fluid-Heated Fractures
US20090101348 *Dec 23, 2008Apr 23, 2009Kaminsky Robert DMethod of Developing Subsurface Freeze Zone
US20090107679 *Dec 23, 2008Apr 30, 2009Kaminsky Robert DSubsurface Freeze Zone Using Formation Fractures
US20090260823 *Oct 22, 2009Robert George Prince-WrightMines and tunnels for use in treating subsurface hydrocarbon containing formations
US20090260824 *Oct 22, 2009David Booth BurnsHydrocarbon production from mines and tunnels used in treating subsurface hydrocarbon containing formations
US20100078169 *Apr 1, 2010Symington William AMethods of Treating Suberranean Formation To Convert Organic Matter Into Producible Hydrocarbons
US20120160495 *Jun 28, 2012Halliburton Energy Services, Inc.Thermal recovery of shallow bitumen through increased permeability inclusions
USRE35696 *Sep 28, 1995Dec 23, 1997Shell Oil CompanyHeat injection process
CN102928320A *Aug 9, 2011Feb 13, 2013中国石油化工股份有限公司Method and apparatus for testing viscous oil viscosity on well boring coring site
CN102928320B *Aug 9, 2011Nov 26, 2014中国石油化工股份有限公司Method and apparatus for testing viscous oil viscosity on well boring coring site
EP2098683A1Mar 4, 2008Sep 9, 2009ExxonMobil Upstream Research CompanyOptimization of untreated oil shale geometry to control subsidence
WO1989012728A1 *Jun 13, 1989Dec 28, 1989Parker Marvin TIn-well heat exchange method for improved recovery of subterranean fluids with poor flowability
WO2001081505A1 *Mar 23, 2001Nov 1, 2001Exxonmobil Upstream Research CompanyMethod for production of hydrocarbons from organic-rich rock
WO2007089944A2 *Feb 2, 2007Aug 9, 2007Pfefferle William CMethod for recovery of stranded oil
WO2012015528A1 *Jun 3, 2011Feb 2, 2012Exxonmobil Upstream Research CompanyEnhanced hydrocarbon fluid recovery via formation collapse
Classifications
U.S. Classification166/259, 166/272.2, 166/308.1, 166/271
International ClassificationE21B43/16, E21B43/24
Cooperative ClassificationE21B43/2405
European ClassificationE21B43/24K