WO1995022809A1 - Procede et dispositif permettant d'evaluer la permeabilite d'un milieu rocheux - Google Patents
Procede et dispositif permettant d'evaluer la permeabilite d'un milieu rocheux Download PDFInfo
- Publication number
- WO1995022809A1 WO1995022809A1 PCT/FR1995/000188 FR9500188W WO9522809A1 WO 1995022809 A1 WO1995022809 A1 WO 1995022809A1 FR 9500188 W FR9500188 W FR 9500188W WO 9522809 A1 WO9522809 A1 WO 9522809A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic field
- rocky
- permeability
- medium
- value
- Prior art date
Links
- 230000035699 permeability Effects 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000011435 rock Substances 0.000 title abstract description 13
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 210000003722 extracellular fluid Anatomy 0.000 claims description 29
- 230000005284 excitation Effects 0.000 claims description 24
- 238000005259 measurement Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000003129 oil well Substances 0.000 abstract description 3
- 238000012625 in-situ measurement Methods 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000005755 formation reaction Methods 0.000 description 7
- 238000011065 in-situ storage Methods 0.000 description 6
- 230000003071 parasitic effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000015654 memory Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 1
- 238000013213 extrapolation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
-
- 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
- G01V3/26—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
- G01V3/265—Operating with fields produced by spontaneous potentials, e.g. electrochemicals or produced by telluric currents
Definitions
- the present invention relates to methods and devices for evaluating the permeability of a rocky environment, finding a particularly advantageous application in the case of the in situ determination of the permeability of a geological formation, for example which surrounds a well of oil.
- the process which is described in this document consists in positioning, in contact with the side wall of the well and substantially at a point situated at the level where the permeability must be measured, a source of excitation, in controlling this source so that it produce a transient electrokinetic potential in the rocky environment around the point of contact, measure the amplitude of this electrokinetic potential, determine a characteristic signal as a function of the response time of this electrokinetic potential created in the rocky environment, and determine the permeability of this rocky environment around the point of contact as a function of the characteristic signal.
- the device which makes it possible to implement this process consists essentially of a tool capable of creating a transient electrokinetic potential in the rocky environment, means for positioning this tool in contact with the wall of the well substantially at a point located at the level of the environment. rocky where we want to measure permeability, means to control the tool so that it produces an excitation capable of effectively achieving the transient electrokinetic potential, at least two electrodes which are pressed against the wall of the well on the other from the excitation point to measure the electrokinetic potential, and means for processing the signal delivered by these electrodes in order to determine the permeability of the rocky medium at the excitation point.
- This method and this device have the advantage of allowing the measurement of the permeability of geological formations, carried out in situ in wells made in these geological formations, but still have, in particular, the following drawbacks.
- a generally significant spontaneous potential background noise surrounds the electrokinetic potential to be detected, while the latter is still very low.
- the contact of the electrodes with the wall of the well must be constant and excellent, which is very difficult taking into account the geometry of a borehole, and the presence of mud in the well can create parasitic impedances between the electrodes and the wall. Consequently, even when it is theoretically possible, the measurement of the electrokinetic potential is not reliable and the test results supplied by the means for processing the signals delivered by the electrodes are falsified.
- the present invention thus aims to implement a method for assessing in situ the permeability of a rocky environment, and to provide a device for implementing this method, which largely overcomes the drawbacks mentioned above.
- the subject of the present invention is a method for evaluating the permeability of a rocky environment, characterized in that it consists:
- the present invention also relates to a device for evaluating the permeability of a rocky medium containing a fluid in its interstices, characterized in that it comprises: - means for imparting to said interstitial fluid a relative movement with respect to said rocky medium ,
- the single figure represents, in schematic form, an embodiment of a device according to the invention, making it possible to assess in situ the permeability of a rocky medium, in an application to a well in an oil or gas deposit natural.
- the present invention relates to a method for evaluating the permeability of a rocky medium 100, for example a geological formation in which an oil well or the like 50 is produced.
- the process consists first of all in filling the interstices which may be in the rocky medium, if they are not already naturally, with a given fluid, for example water or any other fluid commonly used in the wells of oil.
- a given fluid for example water or any other fluid commonly used in the wells of oil.
- this interstitial fluid is printed, by any means including those which are described below, a relative movement with respect to the rocky medium 100, essentially by pulses.
- the interstitial fluid is set in motion, electric currents circulate and the circulation of these currents creates a magnetic field.
- the method according to the invention then consists in measuring this magnetic field induced in the rocky environment by the relative displacement of the interstitial fluid with respect to the rocks of the geological formation tested.
- the value of the measured magnetic field is preferably converted into another quantity which is proportional to it, for example an electrical signal, which can be more easily processed by various means such as memories, calculators, etc.
- the permeability of the rocky medium is evaluated as a function of the magnetic field measured, for example by means of abacuses or using a computer whose calculation program has been developed from these abacuses. which are then essentially constituted by databases.
- the method described above therefore makes it possible to evaluate the permeability of a rocky medium around the point where the interstitial fluid has been set in motion.
- the method according to the invention is applied a plurality of times along this well.
- the method consists in measuring the value of the parasitic magnetic field and the value of the total magnetic field at the location of the measurement during the excitation of the interstitial fluid, then in subtracting the value of the parasitic magnetic field, from that of the total magnetic field, to obtain the value of the induced magnetic field.
- the invention also relates to a device for implementing the method described above, the single figure representing an embodiment of this device in the application to the measurement of the permeability of the rocky environment 100 of which, for the simplification of the description, the interstices are assumed to be already filled with the interstitial fluid mentioned in the description of the process.
- the device comprises means 1 for imparting to the interstitial fluid a relative movement relative to the rocky environment 100, means 2 for measuring the magnetic field created by the circulation, in the rocky environment, of the electric currents produced by this movement relative of the interstitial fluid, and means 3 for determining the permeability of the rocky medium as a function of the value of the measured induced magnetic field.
- the means 1 for imparting to the interstitial fluid a relative movement with respect to the rocky medium 100 can be constituted in different ways. In a preferred embodiment, they can be constituted by means 10 for effecting, substantially at a point 11 of the rocky medium, and more particularly of the wall 56 of the well 50, an excitation in a given direction 12 substantially perpendicular to this wall 56 and oriented towards the rocky environment.
- these means 10 for carrying out an excitation on the interstitial fluid consist of means 13 for injecting an auxiliary pressurized fluid, such as water or the like, comprising a pump 15 controlled, for example cyclically at a given relatively low frequency, to send pulses of this auxiliary fluid into a pipe 16 which opens at point 11, in order to inject it into the rocky medium and thereby cause the relative displacement of the interstitial fluid described above.
- an auxiliary pressurized fluid such as water or the like
- the means 10 can be constituted by means of emission of compression waves 14 comprising a pressure chamber 17 separated from the wall 56 of the well 50, substantially at the point of excitation 11, by a flexible and elastic membrane 18, and, for example, the same pump 15 described above which sends the same pulses of fluid auxiliary under pressure, but in chamber 17. It is then the pressure created at the level of the membrane 18 which transmits the pulses.
- This last embodiment has the advantage of separating the auxiliary fluid from the interstitial fluid and allows dynamic measurements to be made.
- the means 2 for measuring the induced magnetic field produced by this relative movement of the fluid in the rocky environment are constituted by at least one magnetometer.
- the device comprises two magnetometers schematically represented by two magnetic coils 21, 22 arranged substantially symmetrically with respect to a plane passing through the point 11, containing the direction 12 and substantially perpendicular to the wall 56.
- the turns 23, 24 of the two coils are wound in the same direction with respect to the same frame of reference, so that the measurement of the magnetic field is as precise as possible. It is however clearly specified that this representation should not be taken for a limitation of the production of the means 2 to magnetic coils.
- the device further comprises controllable means 51 , for example controllable telescopic arms or the like 53, 54, to maintain the two coils 21, 22 at a determined distance "h" from the point 1 1 defined above.
- controllable means 51 for example controllable telescopic arms or the like 53, 54, to maintain the two coils 21, 22 at a determined distance "h" from the point 1 1 defined above.
- the means 3 for determining the permeability of the rocky medium 100 at the excitation point 1 1 as a function of magnetic field measurement include a programmable processing unit 30 comprising at least two signal inputs 31, 32 and first 33 and second 34 means, such as differential amplifiers, for applying the signals obtained to the outputs 35, 36 of the two coils 21, 22, respectively to the two inputs 31, 32 of the processing unit 30.
- the means 2 for measuring the value of the magnetic field defined above comprise means for measuring the value of the secondary magnetic field, means for measuring the value of the total magnetic field prevailing at point 11 during the excitation of the interstitial fluid, and means for subtracting the value of the secondary magnetic field from that of the total magnetic field.
- the means for measuring the value of the secondary magnetic field can be of any type depending on the nature of this field and are mounted in cooperation with the means 3 so that the values which they deliver are continuously subtracted from those delivered by the means 2.
- the value of this secondary magnetic field is known, it can be stored in the processing unit 30 and directly subtracted from the value delivered at the output of the measuring means 2.
- This processing unit 30 is advantageously constituted, for example, by microcomputer or the like programmed to deliver at its output 37 a value representative of the measured permeability.
- the program for this unit can be developed using deduced charts, for example, by experimentation.
- the device comprises a tool 70 constituted, for example, by an enclosure 71 made of a preferably insulating material, capable of being lowered into the well by any means, in particular a cable 72 associated with a winch or the like situated on the surface of the ground in which this well is made.
- This enclosure encloses all the means for carrying out, at the point 1 1, the excitation in a given direction 12 substantially perpendicular to the wall 56 of the well, all of these means being constituted by: the end of the pipe 16 or the chamber 17 with the membrane 1 8 which open on the side of the enclosure 71 by a window 74 made in the wall of this enclosure, the means 2 for measuring the magnetic field, in this case the two magnetic coils 21, 22, and the controllable means 51, for example the controllable telescopic arms or the like 53, 54, for holding the two coils 21, 22 at a determined distance "h" from point 1 1.
- This enclosure 71 also encloses means 52 for controlling the controllable means 51, as well as means 73 which allow the enclosure to be pressed against the wall 56 so as to be able to cause optimal excitation of the interstitial fluid.
- the means 73 which make it possible to position the enclosure in the well so that the window 74 is pressed against the wall 56 very schematically comprise a bearing 75 mounted at the end 76 of a telescopic arm 77 which passes through the wall of the enclosure 71 through an opening 78.
- the other end 79 of this telescopic arm is for example mounted in association with a controllable gearbox 80 or the like secured to the enclosure 71.
- the direction of this the telescopic arm 77 is substantially coincident with the excitation direction 12 defined above and the opening 78 is substantially opposite the window 74 which surrounds the excitation point 11.
- the gearbox 80 is controlled, for example by means of an electric motor, to extend the telescopic arm 77 until the shoe 75 abuts against the wall portion 57 of the well opposite the wall portion on which the location of the excitation point is defined 1 1.
- the shoe exerts a feedback force which makes it possible to firmly press the window 74 against the wall 56 around the excitation point 11.
- the tool is then perfectly positioned and permeability measurement can be performed.
- the means 52 for controlling the controllable means 51 can be advantageously coupled with these means 73, essentially at the level of the gearbox 80.
- This box then has an outlet for each of the three telescopic arms 53, 54 and 77 which are, for example, of the "rack and pinion" type.
- the gearbox is designed so that, by a reduction system, to an elongation of a first given value " ⁇ d "of the telescopic arm 77, corresponds to an elongation of a value equal to" 0.9 x ⁇ d "of the two telescopic arms 53, 54.
- the distance separating the two magnetic coils 21, 22 from the excitation point 11 is thus automatically subject to the value of the diameter of the well at the level of the excitation point 11.
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geophysics (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95909840A EP0695427A1 (fr) | 1994-02-22 | 1995-02-17 | Procede et dispositif permettant d'evaluer la permeabilite d'un milieu rocheux |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR94/01965 | 1994-02-22 | ||
FR9401965A FR2716536B1 (fr) | 1994-02-22 | 1994-02-22 | Procédé et dispositif pour mesurer la perméabilité d'un milieu rocheux . |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995022809A1 true WO1995022809A1 (fr) | 1995-08-24 |
Family
ID=9460290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1995/000188 WO1995022809A1 (fr) | 1994-02-22 | 1995-02-17 | Procede et dispositif permettant d'evaluer la permeabilite d'un milieu rocheux |
Country Status (9)
Country | Link |
---|---|
US (1) | US5519322A (fr) |
EP (1) | EP0695427A1 (fr) |
JP (1) | JPH07280947A (fr) |
CN (1) | CN1123571A (fr) |
CA (1) | CA2142928A1 (fr) |
FR (1) | FR2716536B1 (fr) |
NO (1) | NO950655L (fr) |
OA (1) | OA10237A (fr) |
WO (1) | WO1995022809A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2796721A1 (fr) * | 1999-07-22 | 2001-01-26 | Structure Et Rehabilitation | Dispositif de determination de la permeabilite a l'eau d'un materiau constitutif de la paroi d'une conduite |
WO2007051915A2 (fr) * | 2005-11-02 | 2007-05-10 | Innov-Pro | Dispositif pour imagerie magnetique de la partie du sous-sol bordant la paroi d'un puits de petrole |
CN102230878A (zh) * | 2011-06-18 | 2011-11-02 | 中国石油集团西部钻探工程有限公司 | 围压试样夹持器 |
CN109752302A (zh) * | 2017-11-02 | 2019-05-14 | 中国石油天然气股份有限公司 | 一种预测致密砂岩储层上倾方向孔隙度的方法 |
Families Citing this family (22)
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GB9715912D0 (en) | 1997-07-28 | 1997-10-01 | Groundflow Ltd | Enhanced detection method |
US6084413A (en) | 1998-04-29 | 2000-07-04 | Mohamed; Moustafa Abdel Kader | Method and apparatus for detecting rock movement |
GB9906093D0 (en) | 1999-03-18 | 1999-05-12 | Groundflow Ltd | Method for electrokinetic downhole logging |
US6285203B1 (en) | 1999-06-14 | 2001-09-04 | Micron Technology, Inc. | Test system having alignment member for aligning semiconductor components |
US6998845B2 (en) * | 2001-03-13 | 2006-02-14 | Schlumberger Technology Corporation | Process and device for assessing the permeability of a rock medium |
GB0115809D0 (en) * | 2001-06-28 | 2001-08-22 | Groundflow Ltd | Downhole measurement of rock properties |
RU2324813C2 (ru) * | 2003-07-25 | 2008-05-20 | Институт проблем механики Российской Академии наук | Способ и устройство для определения формы трещин в горных породах |
US7443168B2 (en) * | 2004-04-29 | 2008-10-28 | Baker Hughes Incorporated | Compact magnetic sensor for multi-component induction and micro-resistivity measurements |
RU2402048C2 (ru) * | 2004-06-18 | 2010-10-20 | Шлюмбергер Текнолоджи Б.В. | Способы и устройства для измерения фильтрационных потенциалов и определения характеристик подземного пласта |
CA2677536A1 (fr) * | 2007-02-06 | 2008-08-14 | Schlumberger Canada Limited | Procede, systeme et outil de diagraphie servant a estimer la permeabilite d'une formation |
US8230918B2 (en) * | 2007-05-24 | 2012-07-31 | Saudi Arabian Oil Company | Method of characterizing hydrocarbon reservoir fractures in situ with artificially enhanced magnetic anisotropy |
FR2931189B1 (fr) * | 2008-05-16 | 2010-05-14 | Total Sa | Procede d'estimation de parametres physiques d'une formation geologique |
CN101413870B (zh) * | 2008-11-24 | 2011-01-12 | 北京联合大学 | 一种测量岩石低渗透率的实验装置及方法 |
CN101482409B (zh) * | 2009-02-09 | 2010-08-18 | 吴志刚 | 岩体裂隙方向和倾角测量方法 |
US20110167896A1 (en) * | 2010-01-11 | 2011-07-14 | General Electric Company | Estimation of reservoir permeability |
BR112012027443A2 (pt) | 2010-04-27 | 2016-07-19 | Halliburton Energy Services Inc | aparelho, sistema, método de processamento implementado, e, artigo. |
US9354348B2 (en) * | 2011-09-21 | 2016-05-31 | Baker Hughes Incorporated | Method of measuring parameters of a porous medium using nanoparticle injection |
US20140041862A1 (en) * | 2012-08-07 | 2014-02-13 | Halliburton Energy Services, Inc. | Use of Magnetic Liquids for Imaging and Mapping Porous Subterranean Formations |
CN104729948B (zh) * | 2014-04-21 | 2017-06-16 | 河南理工大学 | 含瓦斯煤水气两相渗流实验系统和方法 |
CN103926186B (zh) * | 2014-04-28 | 2016-02-24 | 西安石油大学 | 一种定量评价注水对孔喉分布影响的方法 |
CN104880394B (zh) * | 2015-05-04 | 2017-12-26 | 同济大学 | 一种混凝土气渗性测试设备及其测试方法 |
CN106777865B (zh) * | 2016-11-14 | 2019-05-31 | 绍兴文理学院 | 岩体渗透性Dice相似度量预测分类方法 |
Citations (6)
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EP0043768A1 (fr) * | 1980-07-07 | 1982-01-13 | Schlumberger Limited | Système de mesure de la perméabilité d'une formation terrestre par la mesure du potentiel d'un courant fluidique |
US4427944A (en) * | 1980-07-07 | 1984-01-24 | Schlumberger Technology Corporation | System for permeability logging by measuring streaming potentials |
US4437064A (en) * | 1981-05-22 | 1984-03-13 | The United States Of America As Represented By The United States Department Of Energy | Apparatus for detecting a magnetic anomaly contiguous to remote location by squid gradiometer and magnetometer systems |
FR2540253A1 (fr) * | 1983-02-01 | 1984-08-03 | Petroles Cie Francaise | Appareil d'exploration magnetique pour trou de forage |
US5209104A (en) * | 1992-01-23 | 1993-05-11 | Mobil Oil Corporation | Method for desaturating a porous rock for electrical resistivity measurements |
US5269180A (en) * | 1991-09-17 | 1993-12-14 | Schlumberger Technology Corp. | Borehole tool, procedures, and interpretation for making permeability measurements of subsurface formations |
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US3116449A (en) * | 1961-01-30 | 1963-12-31 | Shell Oil Co | Well logging apparatus with sonic energy means for removing mudcake from the borehole wall |
US3621380A (en) * | 1969-01-02 | 1971-11-16 | Texas Instruments Inc | Method and apparatus for seismic-magnetic prospecting |
JPH0726512B2 (ja) * | 1989-12-29 | 1995-03-22 | 地熱技術開発株式会社 | 人工磁場を利用した地殻内亀裂形状、賦存状熊三次元検知システム |
US5417104A (en) * | 1993-05-28 | 1995-05-23 | Gas Research Institute | Determination of permeability of porous media by streaming potential and electro-osmotic coefficients |
-
1994
- 1994-02-22 FR FR9401965A patent/FR2716536B1/fr not_active Expired - Fee Related
-
1995
- 1995-02-17 WO PCT/FR1995/000188 patent/WO1995022809A1/fr not_active Application Discontinuation
- 1995-02-17 CN CN95190103.6A patent/CN1123571A/zh active Pending
- 1995-02-17 EP EP95909840A patent/EP0695427A1/fr not_active Ceased
- 1995-02-20 CA CA002142928A patent/CA2142928A1/fr not_active Abandoned
- 1995-02-21 NO NO950655A patent/NO950655L/no unknown
- 1995-02-22 JP JP5789295A patent/JPH07280947A/ja not_active Withdrawn
- 1995-02-22 US US08/392,328 patent/US5519322A/en not_active Expired - Lifetime
- 1995-10-20 OA OA60723A patent/OA10237A/fr unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0043768A1 (fr) * | 1980-07-07 | 1982-01-13 | Schlumberger Limited | Système de mesure de la perméabilité d'une formation terrestre par la mesure du potentiel d'un courant fluidique |
US4427944A (en) * | 1980-07-07 | 1984-01-24 | Schlumberger Technology Corporation | System for permeability logging by measuring streaming potentials |
US4437064A (en) * | 1981-05-22 | 1984-03-13 | The United States Of America As Represented By The United States Department Of Energy | Apparatus for detecting a magnetic anomaly contiguous to remote location by squid gradiometer and magnetometer systems |
FR2540253A1 (fr) * | 1983-02-01 | 1984-08-03 | Petroles Cie Francaise | Appareil d'exploration magnetique pour trou de forage |
US5269180A (en) * | 1991-09-17 | 1993-12-14 | Schlumberger Technology Corp. | Borehole tool, procedures, and interpretation for making permeability measurements of subsurface formations |
US5209104A (en) * | 1992-01-23 | 1993-05-11 | Mobil Oil Corporation | Method for desaturating a porous rock for electrical resistivity measurements |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2796721A1 (fr) * | 1999-07-22 | 2001-01-26 | Structure Et Rehabilitation | Dispositif de determination de la permeabilite a l'eau d'un materiau constitutif de la paroi d'une conduite |
WO2007051915A2 (fr) * | 2005-11-02 | 2007-05-10 | Innov-Pro | Dispositif pour imagerie magnetique de la partie du sous-sol bordant la paroi d'un puits de petrole |
WO2007051915A3 (fr) * | 2005-11-02 | 2008-01-24 | Innov Pro | Dispositif pour imagerie magnetique de la partie du sous-sol bordant la paroi d'un puits de petrole |
CN102230878A (zh) * | 2011-06-18 | 2011-11-02 | 中国石油集团西部钻探工程有限公司 | 围压试样夹持器 |
CN109752302A (zh) * | 2017-11-02 | 2019-05-14 | 中国石油天然气股份有限公司 | 一种预测致密砂岩储层上倾方向孔隙度的方法 |
Also Published As
Publication number | Publication date |
---|---|
US5519322A (en) | 1996-05-21 |
CA2142928A1 (fr) | 1995-08-23 |
NO950655D0 (no) | 1995-02-21 |
CN1123571A (zh) | 1996-05-29 |
JPH07280947A (ja) | 1995-10-27 |
FR2716536A1 (fr) | 1995-08-25 |
OA10237A (fr) | 1997-10-07 |
EP0695427A1 (fr) | 1996-02-07 |
NO950655L (no) | 1995-08-23 |
FR2716536B1 (fr) | 1996-04-26 |
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