WO1987004790A1 - Method and apparatus for preparation of rock core samples - Google Patents
Method and apparatus for preparation of rock core samples Download PDFInfo
- Publication number
- WO1987004790A1 WO1987004790A1 PCT/GB1987/000084 GB8700084W WO8704790A1 WO 1987004790 A1 WO1987004790 A1 WO 1987004790A1 GB 8700084 W GB8700084 W GB 8700084W WO 8704790 A1 WO8704790 A1 WO 8704790A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- sample
- pressure
- inlet
- solvent
- Prior art date
Links
- 239000011435 rock Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 13
- 238000002360 preparation method Methods 0.000 title claims description 7
- 239000002904 solvent Substances 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims abstract description 33
- 238000004140 cleaning Methods 0.000 claims abstract description 30
- 230000007704 transition Effects 0.000 claims abstract description 24
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000011010 flushing procedure Methods 0.000 claims abstract description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 6
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 6
- 230000035699 permeability Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000013557 residual solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 230000002311 subsequent effect Effects 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
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/241—Earth materials for hydrocarbon content
Definitions
- the preparation of rock samples for laboratory analysis involves cleaning, to remove brine and crude oi l or the like from the sample, and drying, to remove the cleaning fluids. It is important that the original pro ⁇ perties of the sample are not altered by the preparation process since this may invalidate the results of any sub- sequent analysis.
- apparatus for the preparation of rock core samples for analysis comprises; a sample holder defining a closed chamber having an inlet port and an outlet port; valve means associated with said inlet and outlet ports; means for flushing at least one cleaning solvent through said chamber via said inlet and outlet ports; means for passing a transition fluid through said chamber, via said inlet and outlet ports; and means for controlling th*e temperature and pressure of said transition fluid within said chamber.
- the apparatus includes flow directing means located within said chamber comprising a sleeve of flexible material into which the sample fits closely, the longitudinal ends of said sleeve being adapted to engage the interior walls of said chamber such that- fluid entering the inlet port is directed into the interior of said sleeve and hence through the sample.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Dispersion Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A rock core sample (40) is enclosed within a chamber (44) having inlet and outlet ports (46, 48). A cleaning solvent is flushed through the chamber (44) to clean the sample (40) which is then dried by flushing a transition fluid (such as liquid carbon dioxide) through the chamber (44), closing the inlet and outlet valves (12, 14), raising the temperature and pressure of the fluid within the chamber (44) beyond the critical point thereof, and reducing the pressure of the fluid below the critical pressure thereof, by opening the outlet valve (14), such that the transition fluid changes smoothly from liquid to gas without going through a liquid-vapour phase, thereby reducing the risk of damage to the structure of the sample.
Description
M§I_!QD_ AND. APPAR Aiy S_ FOR_PR EPARAI ION_O F _RO C K_ COR EXAMPLES
_.£-i££lB_- i2D
The present invention is concerned with the pre¬ paration of rock core samples prior to analysis, such as porosity and permeability measurements or scanning ele- tron microscope analysis, and is particularly intended for use with reservoir samples obtained in connection with petroleum exploration.
The preparation of rock samples for laboratory analysis involves cleaning, to remove brine and crude oi l or the like from the sample, and drying, to remove the cleaning fluids. It is important that the original pro¬ perties of the sample are not altered by the preparation process since this may invalidate the results of any sub- sequent analysis.
A common problem with preparation techniques currently employed is that c lays whi ch may be contained within the sample are subject to both chemical and physi¬ cal damage, which can substantially alter the porosity and permeabi lity of the sample. Chemical damage can be avoided by careful selection of cleaning solvents; however the normal drying process, heating the core in an oven to evaporate the solvents, may physically damage the clays in the sample by the formation of gas/liquid interfaces and by the removal of their natural water content by overheating. Furthermore, known techniques are imprecise, and generally very slow and thus expensive in terms of time and resources.
It an object of the present invention to obviate or mitigate the aforesaid disadvantages.
In accordance with one aspect of the present inven¬ tion, a method of preparing a rock core sample for analy¬ sis comprises the steps of: confining the sample in a chamber having an inlet port and an outlet port;
flushing at least one cleaning solvent through said chamber via said inlet and outlet ports; passing a transition fluid, in its liquid state, through said chamber via said inlet and outlet ports; increasing the temperature and pressure of said transition fluid within said chamber beyond the critical point thereof; and reducing the pressure of said transition fluid within said chamber below the critical pressure thereof.
The temperature and pressure are preferably increased beyond the critical point by closing the inlet and outlet ports and applying heat to the closed chamber.
Preferably, said transition fluid is miscible with the cleaning solvent or solvents used.
Preferably also, said transition fluid is carbon dioxide.
Preferably also, said cleaning solvent is inspected at the outlet port of said chamber and flushing is continued until the effluent solvent is clean.
In a particularly preferred embodiment, the rock core sample is closely confined within said chamber such that substantially all of the cleaning solvent passes through said sample, and wherein the liquid permeability of the sample is monitored during cleaning by measuring the pressure differential across the sample.
Preferably also, said solvent is pumped through said chamber against a controllable, variable back-pressure,
In accordance with a second aspect of the present invention, apparatus for the preparation of rock core samples for analysis comprises; a sample holder defining a closed chamber having an inlet port and an outlet port; valve means associated with said inlet and outlet ports; means for flushing at least one cleaning solvent
through said chamber via said inlet and outlet ports; means for passing a transition fluid through said chamber, via said inlet and outlet ports; and means for controlling th*e temperature and pressure of said transition fluid within said chamber.
Preferably, the apparatus includes flow directing means located within said chamber comprising a sleeve of flexible material into which the sample fits closely, the longitudinal ends of said sleeve being adapted to engage the interior walls of said chamber such that- fluid entering the inlet port is directed into the interior of said sleeve and hence through the sample.
Preferably also, means are also included for applying a confining pressure to the exterior of said sleeve.
In a particular embodiment for the treatment of a right cylindrical sample, said sleeve is generally tubular, the longitudinal ends thereof being flared outwardly to engage said interior walls of said chamber. Preferably also, means are also included for measuring the pressure differential across said sample. Alternatively, the sample holder is adapted to receive a variety of interchangeable chambers having different interior shapes and volumes. Preferably also, said apparatus includes a plurality of solvent reservoirs and distributor means for selectively flushing solvent from one of said reservoirs through said sample holder.
Preferably also, said apparatus includes means for inspecting the effluent cleaning solvent drained from the outlet of the sample holder.
Preferably also, means are included for applying a controllable, variable back pressure to said sample holder. Embodiments of the invention will now be described.
by way of example only, with reference to the accompanying drawings, in which:-
Fig. 1 is a schematic representation of apparatus for cleaning a rock core sample in accordance with the invention;
Fig. 2 is a schematic representation of apparatus for drying a rock core sample after cleaning; and
Fig. 3 is a schematic drawing, partly in section, of a preferred embodiment of a sample holder for use with the apparatus of Figs. 1 and 2.
Referring now to Fig. 1 of the drawings, apparatus for cleaning a rock core sample includes a sample holder 10 having a sample chamber (not shown) therein which communicates via inlet and outlet ports (not shown) with inlet and outlet valves 12 and 14. The inlet valve 12 is connected, via a pump 16 and distributor 18 to a plurality of cleaning solvent reservoirs 20. Filters 22 are provided between the reservoirs 20 and the distributor 18. The reservoirs may be pressurised with nitrogen via line 24 to suppress fumes and are also provided with closeable vents 26 to atmosphere.
In use, a sample is placed in the chamber of the sample holder 10, one of the solvent reservoirs 20 is selected by means of the distributor 18, the inlet and outlet valves 12 and 14 are opened, the pump 16 started and the chosen cleaning solvent is pumped through the sample holder 10 to clean the sample. Suitably a device (not shown) is included in the outlet line for providing a selected back pressure, which can be adjusted in accordance with the permeability of the sample under measurement .
The effluent solvent may be collected temporarily in an inspection sump 28 where its cleanliness may be evaluated visually or by automated means such as a UV spectr.ophotometer (not shown). The sample is judged
to be clean when the solvent is unchanged after passing through the sample holder 10.
. Any one of a variety of solvents contained in the reservoirs 20 may be selected or a chosen sequence of solvent may be employed as required. Each solvent in a sequence should be iscible with the preceding solvent, and the final solvent miscible with the transition fluid used in the drying operation to be described. Once the sample is clean the pump may be deactivated, the valves 12 and 14 closed, and the sample holder 10 can then be removed from the cleaning apparatus for drying as described below.
Referring now to Fig. 2 the sample holder 10 containing the cleaned sample and residual solvent is placed in a closed canister 30 and the inlet valve 1 is connected to a source of transition fluid, such as liquid carbon dioxide, via line 32 and valve 33 and the outlet valve to a drain via line 34 and valve 35. The transition fluid is chosen to be miscible with the cleaning solvent.
The temperature of the sample holder is controlled by carbon dioxide let into the canister via line 36 and valve 38, which is preferably a solenoid valve controlled by a microprocessor. The sample is dried as follows: the inlet and outlet valves 12 and 14, and valves 33 and 35 are opened and the transition fluid, in its liquid state, is passed through the sample holder 10 to displace the residual solvent. Thereafter the inlet and outlet valves 12, 14 are closed and the temperature of the closed system is raised thus causing the pressure of the transition fluid within the sample holder also to increase unti l temperature and pressure are beyond its critical point (i.e. 31 C and 1071 psi for carbon dioxide). The outlet valve 14 is then reopened, allowing the pressure
to fall at a controlled rate below the critical pressure so that the transition fluid changes smoothly from Liquid to gas without going through a Liquid-vapour phase. In this way the sample is dried without any gas-Liquid interfaces being formed which might damage the sample and no high temperatures are invoLved.
A preferred form of the sample holder 10 is shown schematically in Fig. 3. This embodiment is suitable for use with right-cylindrical cores and improves the efficiency of the cleaning and drying processes.
In this case, the cylindrical core 40 is placed in a close-fitting, substantially cylindrical, flexible sleeve 42 which is in turn placed in a cylindrical chamber 44 in the sample holder 10 which, again, is provided with inlet and outlet ports 46 and 48 and valves 12 and 14.
The longitudinal ends 50 of the sleeve 42 are flared outwards so that they engage the walls of the chamber 44. Thus, any treatment fluid, whether cleaning solvent or transition fluid, entering the chamber from the inlet port 46 is directed through the core 40. A confining pressure is applied to the exterior of the sleeve 42 - by means of a pressurising fluid, such as nitrogen, pumped into the annular space 51 around the sleeve 42 via a second inlet valve 52 and port 54 - so as to prevent distortion of the sleeve 42 and by-passing of the core 40 by the treatment fluid. The confining pressure is typically twice the pressure of the treatment fluid. This arrangement also allows the liquid permeability of the core 40 to be monitored during cleaning, by measuring the pressure differential across the sample. Preferably, sensors (not shown) are provided to measure solvent line pressure, temperature and flow rate electronically via a dedicated microprocessor control to
provide data for measuring permeability and to assist in identifying and quantifying core damage.
. Samples for use in scanning electron microscope analysis are generally small fragments of irregular shape and hence it is impractical to tailor the shape of the chamber to fit them closely. In this case, a series of interchangeable chambers of varying internal shape and size may be provided and the most suitable of these chosen in accordance with the dimensions of the particular sample. It is also preferred in this case to perform both cleaning and drying in a combined operation in one location, which reduces the potential of damage to the sample.
In addition to f Lushing the solvent through the chamber, it may be useful in some cases to raise and lower the pressure of the solvent, e.g. by pumping the solvent in against a high back pressure which is subsequently released. This assists penetration of the solvent into the pores. The present invention, then, provides a method and apparatus for the preparation of rock core samples wherein the sample is cleaned and dr'ied in the same chamber and wherein the speed and efficiency of the process is greatly improved; the invention also facilitates permeability measurement during cleaning.
Claims
1. . A method of preparing a rock core sample (40) for analysis comprising the steps of: confining the sample in a chamber (44) having and inlet port (46) and an outlet port (48); flushing at least one cleaning solvent through said chamber (44) via said inlet and outlet ports (46, 48); passing a transition fluid, in its Liquid state, through said chamber (44) via said inlet and outlet ports (46, 48); increasing the temperature and pressure of said transition fluid within said chamber (44) beyond the critical point thereof; and reducing the pressure of said transition fluid within said chamber (44) below the critical pressure thereof .
2. A method as claimed in claim 1 wherein the temperature and pressure of said transition fluid is raised beyond the critical point by closing said inlet and outlet ports (46, 48) and applying heat to the closed chamber (44).
3. A method as claimed in claim 1 or claim 2 wherein said transition fluid is miscible with said cleaning solvent.
4. A method as claimed in any of claims 1, 2 or 3 wherein said transition fluid is carbon dioxide.
5. A method as claimed in any preceding claim wherein said cleaning solvent is inspected after Leaving said outlet port (48) and flushing is continued until the effluent solvent is clean.
6. A method as claimed in any preceding claim wherein the rock core sample (40) is closely confined within said chamber (44) such that substantially all of the cleaning solvent passes through said sample, and wherein the liquid permeability of the sample (40) is monitored during cleaning by measuring the pressure differential across the sample (40).
7. . A method as claimed in any preceding claim wherein said solvent is pumped through said chamber (44) against a controllable, variable back-pressure.
8. Apparatus for the preparation of a rock core sample (40) for analysis comprising: a sample holder (10) defining a closed chamber (44) having an inlet port (46) and an outlet port (48); valve means (12, 14) associated with said inlet and outlet ports (46, 48); means (16 to 24) for flushing at least one cleaning solvent through said chamber (40) via said inlet and outlet ports (46, 48); means (32 to 35) for passing a transition fluid through said chamber (44) via said inlet and outlet ports (46, 48); and means (30, 36, 38) for controlling the temperature and pressure of said transition fluid within said chamber (44).
9. Apparatus as claimed, in claim 8 including flow directing means located within said chamber (44) comprising a sleeve (42) of flexible material into which the sample (40) fits clcsely, the longitudinal ends (50) of said sleeve being adapted to engage the interior walls of said chamber (44) such that fluid entering the inlet port (46) is directed into the interior of said sleeve (42) and hence through the sample (40).
10. Apparatus as claimed in claim 9 further including means (52, 54) for applying a confining pressure to the exterior of said sleeve (42).
11. Apparatus as claimed in claim 9 or claim 10 for the treatment of a right-cylindrical sample (40) wherein said sleeve (42) is generally tubular, the longitudinal ends (50) thereof being flared outwardly to engage said interior walls of said chamber (44).
12. Apparatus as claimed in any of claims 9, 10 or 11, further including means for measuring the pressure differential across said sample (40).
13. Apparatus as claimed in claim 8 wherein said sample holder 10 is adapted to receive a variety of interchangeable chambers having different interior shapes and volumes.
14. Apparatus as claimed in any of claims 8 to 13, further including a plurality of solvent reservoirs (20) and distributor means (18) for selectively flushing solvent from one of said reservoirs (20) through said sample holder (10).
15. Apparatus as claimed in any of claims 8 to 14, further including means (28) for inspecting the effluent cleaning solvent drained from the outlet (48) of said sample holder (10).
16. Apparatus as claimed in any of claims 8 to 15 further including means for applying a controllable, variable back pressure to sa d sample holder (10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB868603157A GB8603157D0 (en) | 1986-02-08 | 1986-02-08 | Preparation of rock core samples |
| GB8603157 | 1986-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1987004790A1 true WO1987004790A1 (en) | 1987-08-13 |
Family
ID=10592748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GB1987/000084 WO1987004790A1 (en) | 1986-02-08 | 1987-02-05 | Method and apparatus for preparation of rock core samples |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0258303A1 (en) |
| GB (1) | GB8603157D0 (en) |
| WO (1) | WO1987004790A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004097404A1 (en) * | 2003-04-29 | 2004-11-11 | Institut Francais Du Petrole | Method for determination of the formation factor for a subterranean deposit from measurements on drilling waste removed therefrom |
| GB2489053A (en) * | 2011-03-18 | 2012-09-19 | Rockwash Prep & Store Ltd | A method and apparatus for washing rock samples |
| CN103411817A (en) * | 2013-07-13 | 2013-11-27 | 西南石油大学 | Method for cleaning compact core-soluble slat |
| CN104338705A (en) * | 2014-10-27 | 2015-02-11 | 中国石油化工股份有限公司 | Device and method for cleaning simulation rock core for indoor experiment |
| CN104502167A (en) * | 2014-12-17 | 2015-04-08 | 中国矿业大学 | Multi-functional mold and method for preparing artificial core |
| CN105092351A (en) * | 2015-06-09 | 2015-11-25 | 中国石油天然气股份有限公司 | Core oil washing device and method |
| CN106324223A (en) * | 2016-09-30 | 2017-01-11 | 东北石油大学 | High-seepage stripe rock core model, and manufacturing method and device thereof |
| CN109239308A (en) * | 2018-07-23 | 2019-01-18 | 中国石油天然气股份有限公司 | Artificial rock core for simulating compact rock and manufacturing method thereof |
| CN113514313A (en) * | 2021-04-22 | 2021-10-19 | 中煤科工集团重庆研究院有限公司 | Device and method for preparing mud rock samples in batches |
| US20230219118A1 (en) * | 2022-01-07 | 2023-07-13 | Saudi Arabian Oil Company | Cleaning system for core samples and method of cleaning core samples |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101487831B (en) * | 2009-02-06 | 2012-06-20 | 西南石油大学 | Method for fast confirming compact rock core damage |
| CN106370495A (en) * | 2016-11-04 | 2017-02-01 | 中国石油天然气股份有限公司 | High-temperature and high-pressure coating type curable propping agent core manufacturing device |
| CN106769341B (en) * | 2017-03-09 | 2019-03-12 | 河海大学 | A kind of rocks sample preparation device and preparation method containing blind joint |
| CN109366692B (en) * | 2018-12-12 | 2020-06-26 | 中国地质大学（武汉） | Preparation method of clastic rock artificial core compacted after fluid overpressure release |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2617719A (en) * | 1950-12-29 | 1952-11-11 | Stanolind Oil & Gas Co | Cleaning porous media |
| US2842958A (en) * | 1956-01-27 | 1958-07-15 | Pure Oil Co | Apparatus for measuring flow characteristics of porous specimens by displacement |
| US2995027A (en) * | 1957-08-05 | 1961-08-08 | Pure Oil Co | Process for determining the wettability of reservoir rocks |
| US3839899A (en) * | 1971-09-24 | 1974-10-08 | Mobil Oil Corp | Method and apparatus for determining parameters of core samples |
| US4487056A (en) * | 1982-09-28 | 1984-12-11 | Phillips Petroleum Company | Determination of the imbibition characteristics of a rock formation |
-
1986
- 1986-02-08 GB GB868603157A patent/GB8603157D0/en active Pending
-
1987
- 1987-02-05 WO PCT/GB1987/000084 patent/WO1987004790A1/en unknown
- 1987-02-05 EP EP19870901093 patent/EP0258303A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2617719A (en) * | 1950-12-29 | 1952-11-11 | Stanolind Oil & Gas Co | Cleaning porous media |
| US2842958A (en) * | 1956-01-27 | 1958-07-15 | Pure Oil Co | Apparatus for measuring flow characteristics of porous specimens by displacement |
| US2995027A (en) * | 1957-08-05 | 1961-08-08 | Pure Oil Co | Process for determining the wettability of reservoir rocks |
| US3839899A (en) * | 1971-09-24 | 1974-10-08 | Mobil Oil Corp | Method and apparatus for determining parameters of core samples |
| US4487056A (en) * | 1982-09-28 | 1984-12-11 | Phillips Petroleum Company | Determination of the imbibition characteristics of a rock formation |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7319332B2 (en) | 2003-04-29 | 2008-01-15 | Institut Francais Du Petrole | Method for determining of the formation factor for a subterranean deposit from measurements on drilling waste removed therefrom |
| WO2004097404A1 (en) * | 2003-04-29 | 2004-11-11 | Institut Francais Du Petrole | Method for determination of the formation factor for a subterranean deposit from measurements on drilling waste removed therefrom |
| US9651461B2 (en) | 2011-03-18 | 2017-05-16 | Rockwash Prep & Store Ltd | Method for washing rock samples |
| GB2489053A (en) * | 2011-03-18 | 2012-09-19 | Rockwash Prep & Store Ltd | A method and apparatus for washing rock samples |
| WO2012127181A1 (en) * | 2011-03-18 | 2012-09-27 | Rockwash Prep And Store Limited | A method and apparatus for washing rock samples |
| CN103411817A (en) * | 2013-07-13 | 2013-11-27 | 西南石油大学 | Method for cleaning compact core-soluble slat |
| CN103411817B (en) * | 2013-07-13 | 2015-05-13 | 西南石油大学 | Method for cleaning compact core-soluble slat |
| CN104338705A (en) * | 2014-10-27 | 2015-02-11 | 中国石油化工股份有限公司 | Device and method for cleaning simulation rock core for indoor experiment |
| CN104502167A (en) * | 2014-12-17 | 2015-04-08 | 中国矿业大学 | Multi-functional mold and method for preparing artificial core |
| CN105092351A (en) * | 2015-06-09 | 2015-11-25 | 中国石油天然气股份有限公司 | Core oil washing device and method |
| CN106324223A (en) * | 2016-09-30 | 2017-01-11 | 东北石油大学 | High-seepage stripe rock core model, and manufacturing method and device thereof |
| CN109239308A (en) * | 2018-07-23 | 2019-01-18 | 中国石油天然气股份有限公司 | Artificial rock core for simulating compact rock and manufacturing method thereof |
| CN109239308B (en) * | 2018-07-23 | 2021-07-02 | 中国石油天然气股份有限公司 | Artificial rock core for simulating compact rock and manufacturing method thereof |
| CN113514313A (en) * | 2021-04-22 | 2021-10-19 | 中煤科工集团重庆研究院有限公司 | Device and method for preparing mud rock samples in batches |
| CN113514313B (en) * | 2021-04-22 | 2024-01-26 | 中煤科工集团重庆研究院有限公司 | Device and method for preparing mudstone samples in batches |
| US20230219118A1 (en) * | 2022-01-07 | 2023-07-13 | Saudi Arabian Oil Company | Cleaning system for core samples and method of cleaning core samples |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8603157D0 (en) | 1986-03-12 |
| EP0258303A1 (en) | 1988-03-09 |
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