WO2003002850A1 - Measurement device and support for use in a well - Google Patents
Measurement device and support for use in a well Download PDFInfo
- Publication number
- WO2003002850A1 WO2003002850A1 PCT/EP2002/006441 EP0206441W WO03002850A1 WO 2003002850 A1 WO2003002850 A1 WO 2003002850A1 EP 0206441 W EP0206441 W EP 0206441W WO 03002850 A1 WO03002850 A1 WO 03002850A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support
- measurement
- jacket
- well
- cylindrical tube
- Prior art date
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 65
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 24
- 238000005755 formation reaction Methods 0.000 claims description 24
- 239000004568 cement Substances 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 239000012777 electrically insulating material Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 13
- 229930195733 hydrocarbon Natural products 0.000 description 7
- 150000002430 hydrocarbons Chemical class 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1035—Wear protectors; Centralising devices, e.g. stabilisers for plural rods, pipes or lines, e.g. for control lines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
- G01V3/20—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
Definitions
- the invention relates to a support for measurement means, and more particulary to a support for measurement means for monitoring and or studying a fluid reservoir having at least one well bored in geological formations passing therethrough.
- the production of hydrocarbons needs to be controlled and monitored on a regular or permanent basis in order to determine the causes of any stoppage or reduction in production and in order to attempt to provide a remedy.
- production also depends on the characteristics of the geological formations (porosity, permeability, ...) and of the fluids they contain (water, oils, gas).
- an important piece of information is the positions within the reservoir of the contact surfaces between hydrocarbons and water and between hydrocarbons and gas.
- Document FR 2 712 627 describes a device enabling continuous measurement to be performed relating to a reservoir without affecting production, using means for measuring the potential difference between a measurement electrode fixed in the well and a reference electrode.
- That device presents, amongst other things, casing fitted to a production well and carrying electrodes on its outside wall, which electrodes are connected via contact pieces and wiring to electronic means also fixed on the outside of the casing.
- An electrical connection cable connected to a current source serves to connect the electronic means to the surface and runs along the casing. Cement is injected into the annular gap between the outside wall of the casing and the wall of the well so as to fix the device permanently in place, thereby making it possible to perform measurements without disturbing production.
- the invention provides a support for measurement means for monitoring and or studying a fluid reservoir through which at least one well passes, said support comprising:
- said jacket has at least one recess for receiving means for measuring a characteristic representative of said reservoir and/or connection means leading to power supply and measurement-processing means.
- the support of the invention enables measurement means, electronic means, and connection means to be lowered down the well without said means projecting from the outside surface of the support as a whole.
- the support of the invention possesses the advantage of presenting an outside surface that is substantially uniform, i.e. without projections, such that cementing can be performed uniformly in the annulus between said support and the walls of the well, thus avoiding all of the above-mentioned drawbacks.
- the jacket is made of an electrically insulating material and the support includes a plurality of recesses that are regularly spaced apart to receive respective measurement means made of electrically conductive material.
- the measurement means comprise at least one measurement electrode, an electrode for injecting current into the reservoir and/or a current return electrode, thereby enabling an electrical parameter to be determined from which it is possible to deduce the characteristic that is representative of said reservoir.
- the support merely to house means for determining the potential difference between said measurement electrodes and a reference electrode, preferably situated on the surface, in order to be able to deduce the resistivity of the formations surrounding the reservoir and consequently the position of the contact surface between the hydrocarbons and water, and thus be able to optimize production
- the support has an axial recess extending over the full length of said support, said recess being designed to receive the connection means.
- connection means This makes it possible in particular to avoid forming a leakage path for fluids coming from the formation and the reservoir and going towards the surface by following the path of the wire connection along the casing, as can happen in prior art devices.
- connection means accurately to that of the axial recess, and by a judicious selection of the material used, it is possible to obtain sealing that is entirely satisfactory in terms of preventing any fluid from moving along said connection means.
- the support also includes a recess for receiving means for positioning said support in the well.
- the jacket surrounding the cylindrical tube comprises: a first layer of substantially constant thickness covering the walls of the cylindrical tube;
- the invention also provides a measurement device for monitoring and or studying a fluid reservoir through which at least one well passes, said device comprising:
- connection means connecting said measurement means to said power supply and measurement processing means.
- the device further comprises at least one support, with said measurement means and said connection means being housed in the recesses in the jacket of said support.
- Figure 2 is a diagrammatic view of an embodiment of a measurement device constituting an embodiment of the invention.
- Figure 3 is a diagram showing an example of an application of the Figure 2 measurement device.
- Figure 4 is a view of another embodiment of the support of the invention.
- the support 1 of the invention is substantially cylindrical in shape, comprising a tube 2 having a first end 2a carrying a male threaded portion and a second end 2b carrying a female threaded portion.
- the tube 2 is advantageously made of metal.
- the support 1 can be associated with other supports that are identical or with any other tubular structure so as to make up a succession of segments of an overall duct.
- the support 1 also comprises a jacket 3 covering substantially all of the tube 2, except for its threaded male connection end.
- the support 1 can be associated with other structures by being welded thereto.
- the support of the invention is intended specifically to constitute a segment of casing covering the wall of a well passing through geological formations.
- the number of segments constituting said casing thus depends on the length of the well, said segments optionally all being constituted by supports of the invention or only a small number of them being constituted by such supports, with the other tubular segments having no jackets and no recesses.
- the annulus between the casing formed in this way and the walls of the well is subsequently cemented so as to consolidate the assembly and isolate said casing from the fluids flowing in the terrestrial formations.
- the assembly comprising at least one support 1 and a plurality of other segments constitutes part of production tubing, lowered inside casing covering the walls of a well (itself optionally including at least one support of the invention) and conveying a flow of effluent coming from a fluid reservoir through which the well passes.
- the jacket 3 comprises at least one, and advantageously a plurality of annular and or axial recesses 4.
- the axial recess(es) 5 extend along the entire length of the support 1. These recesses can be covered in an optionally continuous sealing layer so as to further reduce the risk of fluid infiltrating between said axial recess and the wire connection that is to be installed therein.
- the recesses 4 are annular, however in general terms the jacket 3 has recesses of arbitrary shape given that said shapes need to correspond to the shapes of the measurement means, positioning means, etc. that are to be engaged in this way in said jacket.
- the purpose of the jacket 3 is to receive various measurement means or electrical, electronic, optical, or hydraulic connection means so that said means are fully included within the thickness of said jacket and therefore do not stand proud, being no more than flush relative to the overall outside diameter of the support of the invention.
- the depth of the recesses 4 or 5 can therefore vary locally as a function of the dimensions of the elements they are to receive, the essential point being that all of these elements are received fully within the thickness of the jacket 3.
- the jacket 3 is constituted by two layers of different materials: a first layer of constant thickness covering the walls of the cylindrical tube 2, and a second layer of varying thickness in which the recesses are formed.
- the function of this second layer is, so to speak, to "equalize" the outside profile of the jacket 3 so that its outside diameter remains constant over the entire length of the support 1.
- the thickness of this second layer is thus a function of the depth of the recesses.
- the two layers of the jacket 3 can be eccentric so as to gain depth for the recesses and thus minimize the overall diameter of the support 1, depending on the particular elements that are to be positioned in said support.
- the jacket 3 is made as a single layer in which recesses of various depths have been formed.
- the support of the invention while the support of the invention is being lowered down a well bored through terrestrial formations, it is the directly-exposed jacket 3 which is subjected to any impacts and friction, while the elements it carries remain protected.
- the jacket 3 is substantially cylindrical, but it could be eccentric relative to the axis of the cylindrical tube 2.
- the mechanical properties of the jacket are advantageously selected so as to be capable of withstanding the weight of the elements installed in the recesses, and also the forces transmitted by the installation equipment (suspension jaws, protection sleeves, clamping jaws) used on the support while it is being lowered down an oil well.
- Solutions known in the state of the art can then be used such as using protection sleeves around the jacket 3 to prevent the teeth of the jaws of installing tools biting into said jacket, or it is possible to make direct use of jaws without teeth but provided with a covering that provides sufficient grip to enable the support 1 to be handled.
- the mechanical properties of the jacket 3 can also be selected in such a manner as to increase the overall strength of the support 1, in particular its ability to withstand pressure, and this is particularly useful when the support of the invention is intended to constitute a segment of casing covering the walls of a well.
- the jacket 3 also needs to be mechanically strong when explosive charges are placed in the support 3 for the purpose of locally puncturing said support to enable hydrocarbons to flow in from the formation. Under such circumstances, the placing of measurement means and wire connections) in the support needs to be arranged so as to ensure that exploding charges does not damage this equipment.
- the electrical properties of the jacket are determined by the nature of the measurements that are to be performed.
- the jacket or at least the first layer of said jacket in the above-cited example, to be of a material that is electrically insulating so as to avoid interfering with the measurement means to be positioned in the various recesses 4 and
- FIG. 2 shows a measurement device 10 of the invention comprising at least one support 1 of the invention having its recesses fitted with various elements. In one embodiment, a fraction of the recesses 4 are provided with annular measurement electrodes 6. The number of such electrodes is arbitrary and depends on the type of measurement and/or the desired accuracy.
- these electrodes are constituted by rings of electrically conductive material (when the desire is to perform measurements of the resistivity of the formations surrounding the reservoir) selected so as to be compatible with the measurements to be made and the fluids that are present.
- the electrodes 6 can be of any shape and of any suitable material.
- the electrodes 6 can be provided with flexible metal springs for ensuring electrical contact with the walls of said well. This is particularly advantageous when the annulus is filled with an oily mud that is electrically non-conductive.
- the electrodes are installed in the recesses 4 prior to the support being lowered down the well, and, as mentioned above, the recesses 4 are of dimensions such as to ensure that the said electrodes are no more than flush relative to the outside diameter of the jacket 3.
- the measurement electrodes 6 are connected via at least one wire connection 7 to means for powering and processing measurements, which means are preferably situated on the surface.
- Electronic means for intermediate processing (not shown) can also be integrated in the support 1 and can perform initial treatment on the measurements prior to sending them to the surface.
- the wire connection is received in the axial recess 5.
- the power supply means are current feeder means when it is desired to perform "electrical" measurements, but it is also possible to use hydraulic, optical, etc. ... feeder means as a function of the kinds of measurement performed by the means 6.
- the axial recess 5 can be extended over the entire duct built up in this way.
- the recesses 5 of the support it is advantageous for the recesses 5 of the support to coincide once the supports have been connected together so as to form a continuous axial recess enabling the wire connection 7 to be extended to the surface.
- annular recesses in the jacket 3 suitable for receiving clamping and sealing means (not shown in the interest of clarity) that hold the wire connection in the axial recess 5. In this manner, while the device 10 is being lowered down a well, these clamping means prevent fluids from infiltrating between the jacket 3 and the connection 7, which could damage the jacket and said connection, and which could disturb measurements.
- the measurement electrodes comprise at least one electrode for injecting current into the formations surrounding the well, a current return electrode, and a measurement electrode, while a reference electrode (not shown) is preferably situated on the surface.
- the device of the invention makes it possible to determine an electrical parameter (corresponding to the potential difference between a measurement electrode and the reference electrode) from which it is possible to deduce the resistivity of the geological formations surrounding the well, which resistivity decreases with increasing conductive fluid content in the formations, i.e. with increasing water content to the detriment of hydrocarbon content. It should be observed that other arrangements of current electrodes are possible, providing electric current flows in the formation.
- the measurement device 10 can be used to implement a measuring and monitoring method of the kind described in patent FR 2712 627, the content of which is incorporated herein by reference.
- the device 10 can also be fitted with auxiliary devices likewise received in recesses specially provided in the support 1 of the invention.
- Such devices can include in particular centralizers 9 as shown diagrammaticalry in Figure 2 and known in the state of the art. Under such circumstances, the centralizers have portions that project from the jacket 3 so as to ensure that the device is properly positioned in a well. This is particularly advantageous when cement is injected into the annulus between the walls of the well and said device, after the device has been put into place. Centralizers serve to ensure that the cemented annulus is of more uniform thickness, thereby minimizing weak points in the annulus.
- the support 1 for the device 10 of the invention can also possess recesses fitted with pressure and temperature sensors or sensors for any other parameter it is useful to know when monitoring and operating the reservoir through which the well extends.
- the device of the invention When the device of the invention is fixed permanently down a well, its technical characteristics become particularly pertinent. As already mentioned, the fact that the outside profile of the device is uniform, i.e. free from any projections other than the centralizers, ensures not only that the various measurement means are protected while the device is being lowered into the well, but also guarantees the integrity of the cemented annulus.
- Figure 3 is a diagram showing how a measurement device of the invention can be used.
- a well 11 is bored through terrestrial formations 12 and passes through at least one fluid reservoir 13.
- Casing has been lowered down the well 11 and the annulus 15 between said casing and the walls of the well has been cemented.
- the casing comprises a succession of segments constituted by measurement devices 10 of the invention, interconnected end to end via the threaded ends 2a and 2b of each support 1.
- At least one of the devices 10 has measurement electrodes 6, and each of the devices 10 has a recess for receiving a wire connection 7 taking the data picked up by the electrodes to means for processing the measurements and for supplying power, which means 16 are situated on the surface.
- Figure 4 represents another implementation of the support according to the invention.
- a well 11 is bored through geological formations 12 and passes through at least one reservoir 13.
- a casing has been lowered in said well.
- the annulus between a first part of said casing and the walls of the well has been cemented until some liner hangers 14 that isolate a last part of the casing from the first cemented part.
- This last part of the casing is made of several supports according to the invention.
- the annulus between said last part and the wall of the well has been filled by gravel packs.
- the cylindrical tube 2 comprises at least two sandscreens 17 between which the jacket 3 has been installed.
- This jacket comprises at least one annular recess, not visible on the figure, wherein one annular electrode has been installed.
- the measurement of the resistivity of the geological formations surrounding the borehole is thus realized through the plurality of annular electrodes each of those being embedded in the annular recess of corresponding support, installed between corresponding sandscreens.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0327024A GB2394241B (en) | 2001-06-26 | 2002-06-12 | Measurement device and support for use in a well |
US10/480,062 US7071696B2 (en) | 2001-06-26 | 2002-06-12 | Measurement device and support for use in a well |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/08445 | 2001-06-26 | ||
FR0108445A FR2826402B1 (en) | 2001-06-26 | 2001-06-26 | SUPPORT FOR MEASURING MEANS IN A WELL FOR PRODUCING HYDROCARBONS |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003002850A1 true WO2003002850A1 (en) | 2003-01-09 |
Family
ID=8864809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/006441 WO2003002850A1 (en) | 2001-06-26 | 2002-06-12 | Measurement device and support for use in a well |
Country Status (5)
Country | Link |
---|---|
US (1) | US7071696B2 (en) |
FR (1) | FR2826402B1 (en) |
GB (1) | GB2394241B (en) |
OA (1) | OA12563A (en) |
WO (1) | WO2003002850A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2390461A1 (en) * | 2010-05-31 | 2011-11-30 | Welltec A/S | Wellbore surveillance system |
CN102939433B (en) * | 2010-05-31 | 2016-11-30 | 韦尔泰克有限公司 | Wellbore surveillance system |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2830272B1 (en) * | 2001-10-01 | 2004-04-02 | Schlumberger Services Petrol | DEVICE FOR MONITORING OR STUDYING A TANK CROSSED BY A WELL |
GB2437824B (en) * | 2006-05-01 | 2009-09-02 | Schlumberger Holdings | Logging tool |
US8186428B2 (en) * | 2007-04-03 | 2012-05-29 | Baker Hughes Incorporated | Fiber support arrangement for a downhole tool and method |
BRPI1007464B1 (en) * | 2009-01-30 | 2020-03-10 | Prad Research And Development Limited | SYSTEM FOR USE IN A WELL, WELL SYSTEM, AND METHOD FOR SEALING AN ABANDONED WELL. |
WO2010093626A2 (en) | 2009-02-11 | 2010-08-19 | M-I L.L.C. | Apparatus and process for wellbore characterization |
FR3076905A1 (en) * | 2018-01-18 | 2019-07-19 | Soletanche Freyssinet | ELECTRIC RESISTIVITY MEASUREMENT PROBE OF A MEDIUM |
CN115341889B (en) * | 2022-05-20 | 2023-03-24 | 中国石油天然气集团有限公司 | Underground discharging operation system with externally-coated bearing cable electrode |
CN117005852B (en) * | 2023-09-28 | 2024-01-16 | 邹城市巨力机械有限公司 | Deep well liquid level monitoring device based on altitude measurement |
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US4286217A (en) * | 1979-02-01 | 1981-08-25 | Schlumberger Technology Corporation | Device for electrode-type electrical logging tools and tool incorporating said device |
GB2146127A (en) * | 1983-08-31 | 1985-04-11 | Exxon Production Research Co | Protective sheath in induction logging tool |
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-
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- 2002-06-12 OA OA1200300339A patent/OA12563A/en unknown
- 2002-06-12 WO PCT/EP2002/006441 patent/WO2003002850A1/en not_active Application Discontinuation
- 2002-06-12 GB GB0327024A patent/GB2394241B/en not_active Expired - Fee Related
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---|---|---|---|---|
EP2390461A1 (en) * | 2010-05-31 | 2011-11-30 | Welltec A/S | Wellbore surveillance system |
WO2011151346A1 (en) * | 2010-05-31 | 2011-12-08 | Welltec A/S | A wellbore surveillance system |
CN102939433A (en) * | 2010-05-31 | 2013-02-20 | 韦尔泰克有限公司 | Wellbore surveillance system |
CN102939433B (en) * | 2010-05-31 | 2016-11-30 | 韦尔泰克有限公司 | Wellbore surveillance system |
RU2658393C2 (en) * | 2010-05-31 | 2018-06-21 | Веллтек А/С | Wellbore surveillance system |
US10030500B2 (en) | 2010-05-31 | 2018-07-24 | Welltec A/S | Wellbore surveillance system |
Also Published As
Publication number | Publication date |
---|---|
US7071696B2 (en) | 2006-07-04 |
GB0327024D0 (en) | 2003-12-24 |
GB2394241B (en) | 2005-06-22 |
FR2826402A1 (en) | 2002-12-27 |
OA12563A (en) | 2006-06-07 |
GB2394241A (en) | 2004-04-21 |
US20040186665A1 (en) | 2004-09-23 |
FR2826402B1 (en) | 2004-02-20 |
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