CN104677805A - Rock core clamping device, pollution kettle and rock core damage evaluation experiment method - Google Patents
Rock core clamping device, pollution kettle and rock core damage evaluation experiment method Download PDFInfo
- Publication number
- CN104677805A CN104677805A CN201510126422.8A CN201510126422A CN104677805A CN 104677805 A CN104677805 A CN 104677805A CN 201510126422 A CN201510126422 A CN 201510126422A CN 104677805 A CN104677805 A CN 104677805A
- Authority
- CN
- China
- Prior art keywords
- rock core
- holding unit
- core
- core holding
- import
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a rock core clamping device. The rock core clamping device comprises a clamping device barrel and a rubber barrel, wherein the clamping device barrel sleeves the rubber sleeve, wherein a confining pressure cavity is arranged between the clamping device barrel and the rubber barrel; a rock core inlet is formed in the bottom end of the clamping device barrel and a rear end cover is arranged on an upper cover of the rock core inlet; and a thread connected with a pollution kettle is arranged on the outer wall of the rock core inlet. By virtue of the rock core clamping device, in a damage evaluation experiment on a reservoir stratum by a working solution, a simulated radial pressure difference of a rock core can be kept in the whole process and the experiment errors caused by manual factors can be avoided.
Description
Technical field
The present invention relates to a kind of core holding unit, pollute still and rock core damage evaluation experimental method.
Background technology
In petroleum exploration and development process, needs assessment is bored in Completion Operations, drilling and completing fluids is to the degree of damage of reservoir, in the damage appraisement experiment of lab simulation working fluid to reservoir, usual employing core holding unit carries out mensuration rock core original permeability, then rock core is polluted, finally measure the permeability after polluting, calculate permeability resume figure, traditional core holding unit, in experimentation, after need first measuring the original permeability of rock core in this core holding unit, removal of core, again rock core is put into the core holding unit polluting still and carry out pollution experiment, then removal of core again, permeability determination after polluting, there is following shortcoming in this mode: (1) rock core and clamper depart from, cause the change of the radial pressure reduction of rock core, affect experimental data, (2), after rock core takes out from pollution still, rock core contacts with external environment condition, and the people that is bound to is the destruction of causing rock core to pollute face, affects pollution level, (3) rock core repeatedly passes in and out, and is easy to cause the packing element in core holding unit to damage, (4) complicated operation, external influence factors is many, and poor operability.
Summary of the invention
The object of the invention is to, a kind of core holding unit is provided, pollutes still and rock core damage evaluation experimental method, this core holding unit, in the damage appraisement experiment of working fluid to reservoir, omnidistancely can keep the radial pressure reduction of the simulation of rock core, and can avoid the experimental error that human factor causes.
The technical solution adopted in the present invention is, a kind of core holding unit, comprise clamper cylindrical shell and be sheathed on the packing element in described clamper cylindrical shell, confined pressure chamber is provided with between described clamper cylindrical shell and described packing element, the bottom of described clamper cylindrical shell offers rock core import, detachablely in described rock core import be connected with rear end cap, the outer wall of described rock core import offer for the screw thread polluting still and be connected.
Preferably, described clamper cylindrical shell is provided with the pressurized hole be communicated with described confined pressure chamber, and described pressurized hole is provided with pressure valve.
Preferably, the sidewall of described rear end cap is provided with screw thread, and the screw thread of described rear end cap is connected with the threaded engagement of described rock core import.
Preferably, described pressure valve is ring pressure valve.
Preferably, cushion block is provided with between the rock core in described rear end cap and described packing element.
Preferably, the rock core side that described cushion block faces in described packing element is provided with convex surface.
A kind of pollute still, comprise pollute still body and as arbitrary in claim 1-6 as described in core holding unit, described pollution still body is provided with connector, and the sidewall of described connector is provided with the screw thread for being connected with the rock core import of described core holding unit.
Use as arbitrary in claim 1-6 as described in the rock core damage evaluation experimental method of core holding unit, comprise
Rock core is placed in the packing element of core holding unit by rock core import, applies predetermined radial pressure on this packing element, carry out original permeability mensuration;
After this mensuration terminates, keep the radial pressure of this rock core, unload the rear end cap of this core holding unit, the screw thread in the rock core import of this core holding unit is threaded with the connector polluted on still, carry out rock core and pollute experiment;
After this experiment terminates, keep the radial pressure of this rock core, and unload core holding unit, the rear end cap of this core holding unit is installed, carry out polluting rear permeability determination.
The invention has the beneficial effects as follows:
1, in the present invention clamper cylindrical shell rock core import on screw thread, for being threaded with pollution still, after making clamper cylindrical shell that rear end cap dismounting is lower, directly be threaded with pollution still, guarantee in damage appraisement experimentation, rock core is not separated with clamper cylindrical shell, avoids rock core to contact with external environment condition, affects experimental result.
2, in the present invention, the pressurized hole of clamper cylindrical shell is provided with ring pressure valve, and this ring pressure valve can keep the radial pressure difference of rock core in clamper cylindrical shell constant.
3, in the present invention clamper cylindrical shell rock core import on screw thread can be connected with the threaded engagement of rear end cap, also can be connected with the threaded engagement on the connector polluting still body, be convenient to rock core import and rear end cap, the dismounting of connector of rock core import and pollution still body and installation.
4, the cushion block in the present invention in rear end cap and packing element between rock core, is convenient to the location that rock core is axial in clamper cylindrical shell.
Accompanying drawing explanation
Fig. 1 is the structural representation of core holding unit of the present invention;
Fig. 2 is the structural representation that the present invention pollutes still.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, hereinafter will be described in detail to embodiments of the invention by reference to the accompanying drawings.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.
As shown in Figure 1, a kind of core holding unit, the packing element 7 comprising clamper cylindrical shell 3 and be sheathed in described clamper cylindrical shell 3, rock core receiving cavity 11 is provided with in packing element 7, rock core 10 can be placed in rock core receiving cavity 11, confined pressure chamber is provided with between clamper cylindrical shell 3 and packing element 7, confined pressure chamber is used for applying radial pressure to packing element 7, this pressure is passed to rock core 10 by packing element 7, clamper cylindrical shell 3 is provided with the pressurized hole be communicated with confined pressure chamber, pressurized hole is provided with pressure valve 8, this pressure valve 8 is preferably ring pressure valve, pressure valve 8 is for controlling the pressure in confined pressure chamber, closing presure valve 8, core holding unit can be kept constant to rock core 10 radial pressure, the front end of packing element 7, confined pressure chamber are provided with clamper lid 2, and the outer wall of this clamper lid 2 is provided with screw thread, can rotate fixing, for sealing confined pressure chamber in clamper cylindrical shell 3, clamper cylindrical shell 3 is provided with locking head 1, locking head 1 is placed in rock core receiving cavity 11, rock core 10 can be clamped, and for flow-through fluid, push rod 9 is provided with in the front end of locking head 1, push rod 9 is fixed on the front end end cover 12 of clamper cylindrical shell 3, and be threaded with front end end cover 12, make it can rotate on front end end cover 12, and carry out axial movement, the bottom of push rod 9 can offset with locking head 1, rotates push rod 9 and makes it apply pressure on locking head 1, for eliminating rock core 10 space axially in rock core receiving cavity 11, patch 4 is provided with between rock core 10 and locking head 1, patch 4 is positioned in packing element 7, for the length of supplementary rock core 10 with locking head 1 axis, locking head 1 and patch 4 are placed in rock core receiving cavity 11, manually rotate push rod 9, shorten the distance between locking head 1 and rock core 10, guarantee the seamless link of rock core 10 axis, rock core import 13 is offered in the bottom of clamper cylindrical shell 3, rock core import 13 is communicated with the rock core receiving cavity 11 in packing element 7, make the bottom of the rock core 10 in rock core receiving cavity 11 can directly and external contact by rock core import 13, the sidewall of rock core import 13 offers the screw thread 16 for being connected with pollution still, this screw thread 16 is opened in inner side or the outside of rock core import 13 sidewall, the sidewall correspondence polluting the connector on still offers the external thread or internal thread that are mated, rock core import 13 is covered with the rear end cap 5 that be flexibly connected detachable with clamper cylindrical shell 3, be preferably, the sidewall of rear end cap 5 is provided with screw thread, screw thread 16 on the screw thread of rear end cap 5 and rock core import 13 sidewall is connected, cushion block 6 is provided with between rock core 10 in rear end cap 5 and packing element 7, the side that cushion block 6 faces rock core 10 in packing element 7 is provided with convex surface, for filling up rock core 10 space axially.
As shown in Figure 2, a kind of pollution still, comprise and pollute still body 14 and the core holding unit 15 as described in above-described embodiment, described pollution still body 14 is provided with connector, this connector is provided with screw thread, and the screw thread 16 in the rock core import 13 of the screw thread on connector and core holding unit 15 is connected.
A damage appraisement experimental technique for rock core, this test method comprises:
Rock core 10 is put into from the bottom rock core import 13 of clamper cylindrical shell 3, axial length is adjusted by patch 4, after locking head 1 is installed, push rod 9 is connected with front end end cover 12 and rotates, guarantee the axial tight of rock core 10, cushion block 6 and rear end cap 5 are installed in the bottom rock core import 13 of clamper cylindrical shell 3, utilizes pressure valve 8 to apply predetermined rock core 10 radial pressure on packing element 7, carry out original permeability mensuration;
After this mensuration terminates, the radial pressure of adjustment rock core 10, and closing presure valve 8 keeps the radial pressure of rock core 10, then unloads rear end cap 5 and cushion block 6, the rock core import 13 of clamper cylindrical shell 3 is connected with supporting pollution still 15, carries out rock core and pollutes experiment;
After this experiment terminates, closing presure valve 8 adjusts and keeps the radial pressure of rock core 10, installs rear end cap 5 and cushion block 6, carries out polluting rear permeability determination.
Although the embodiment disclosed by the present invention is as above, the embodiment that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Technician in any the technical field of the invention; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (8)
1. a core holding unit, it is characterized in that, comprise clamper cylindrical shell and be sheathed on the packing element in described clamper cylindrical shell, confined pressure chamber is provided with between described clamper cylindrical shell and described packing element, the bottom of described clamper cylindrical shell offers rock core import, detachablely in described rock core import be connected with rear end cap, the sidewall of described rock core import offers for the screw thread polluting still and be connected.
2. core holding unit as claimed in claim 1, it is characterized in that, described clamper cylindrical shell is provided with the pressurized hole be communicated with described confined pressure chamber, and described pressurized hole is provided with pressure valve.
3. core holding unit as claimed in claim 1, it is characterized in that, the sidewall of described rear end cap is provided with screw thread, and the screw thread of described rear end cap is connected with the threaded engagement of described rock core import.
4. core holding unit as claimed in claim 2, it is characterized in that, described pressure valve is ring pressure valve.
5. the core holding unit as described in as arbitrary in claim 1-3, is characterized in that, is provided with cushion block between the rock core in described rear end cap and described packing element.
6. core holding unit as claimed in claim 5, it is characterized in that, the rock core side that described cushion block faces in described packing element is provided with convex surface.
7. a pollution still, it is characterized in that, comprise pollute still body and as arbitrary in claim 1-6 as described in core holding unit, described pollution still body is provided with connector, and the sidewall of described connector is provided with the screw thread for being connected with the rock core import of described core holding unit.
8. use a rock core damage evaluation experimental method for core holding unit as claimed in claim 1, it is characterized in that, comprise
Rock core is placed in the packing element of core holding unit by rock core import, applies predetermined radial pressure on this packing element, carry out original permeability mensuration;
After this mensuration terminates, keep the radial pressure of this rock core, unload the rear end cap of this core holding unit, the screw thread in the rock core import of this core holding unit is threaded with the connector polluted on still, carry out rock core and pollute experiment;
After this experiment terminates, keep the radial pressure of this rock core, and unload core holding unit, the rear end cap of this core holding unit is installed, carry out polluting rear permeability determination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510126422.8A CN104677805B (en) | 2015-03-20 | 2015-03-20 | A kind of the rock core damage evaluation experimental method and pollution kettle of core holding unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510126422.8A CN104677805B (en) | 2015-03-20 | 2015-03-20 | A kind of the rock core damage evaluation experimental method and pollution kettle of core holding unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104677805A true CN104677805A (en) | 2015-06-03 |
| CN104677805B CN104677805B (en) | 2018-11-02 |
Family
ID=53313155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510126422.8A Active CN104677805B (en) | 2015-03-20 | 2015-03-20 | A kind of the rock core damage evaluation experimental method and pollution kettle of core holding unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104677805B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226216A (en) * | 2016-07-05 | 2016-12-14 | 董润华 | A kind of core holding unit and measuring method thereof |
| CN106441980A (en) * | 2015-08-07 | 2017-02-22 | 中国石油化工股份有限公司 | Rock sample coring device |
| CN109946437A (en) * | 2019-04-15 | 2019-06-28 | 西南石油大学 | A kind of Fractured compact reservoir working solution damage appraisement method for taking into account matrix and Fracture System |
| CN109946436A (en) * | 2019-04-15 | 2019-06-28 | 西南石油大学 | A kind of Fractured tight gas reservoir working solution damage appraisement method for taking into account matrix and crack |
| CN116973292A (en) * | 2023-09-25 | 2023-10-31 | 中国石油大学(华东) | Multifunctional high-temperature high-pressure reservoir rock core damage evaluation experimental device and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5297420A (en) * | 1993-05-19 | 1994-03-29 | Mobil Oil Corporation | Apparatus and method for measuring relative permeability and capillary pressure of porous rock |
| US6178807B1 (en) * | 1998-03-25 | 2001-01-30 | Phillips Petroleum Company | Method for laboratory measurement of capillary pressure in reservoir rock |
| CN2556632Y (en) * | 2002-01-29 | 2003-06-18 | 大庆油田有限责任公司 | Surround type sealed core holder |
| CN201983980U (en) * | 2011-01-26 | 2011-09-21 | 徐州师范大学 | Broken rock sample creep permeation whole course coupling tester |
| CN102419363A (en) * | 2011-12-05 | 2012-04-18 | 中国石油大学(华东) | Core clamping mechanism |
| CN202339311U (en) * | 2011-10-12 | 2012-07-18 | 中国石油天然气股份有限公司 | Rock core clamping device |
| CN202882901U (en) * | 2012-09-28 | 2013-04-17 | 中国石油化工股份有限公司 | Experimental device for evaluating damage of rock core |
| CN103528932A (en) * | 2013-10-27 | 2014-01-22 | 荆州市现代石油科技发展有限公司 | Multifunctional radial holder |
-
2015
- 2015-03-20 CN CN201510126422.8A patent/CN104677805B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5297420A (en) * | 1993-05-19 | 1994-03-29 | Mobil Oil Corporation | Apparatus and method for measuring relative permeability and capillary pressure of porous rock |
| US6178807B1 (en) * | 1998-03-25 | 2001-01-30 | Phillips Petroleum Company | Method for laboratory measurement of capillary pressure in reservoir rock |
| CN2556632Y (en) * | 2002-01-29 | 2003-06-18 | 大庆油田有限责任公司 | Surround type sealed core holder |
| CN201983980U (en) * | 2011-01-26 | 2011-09-21 | 徐州师范大学 | Broken rock sample creep permeation whole course coupling tester |
| CN202339311U (en) * | 2011-10-12 | 2012-07-18 | 中国石油天然气股份有限公司 | Rock core clamping device |
| CN102419363A (en) * | 2011-12-05 | 2012-04-18 | 中国石油大学(华东) | Core clamping mechanism |
| CN202882901U (en) * | 2012-09-28 | 2013-04-17 | 中国石油化工股份有限公司 | Experimental device for evaluating damage of rock core |
| CN103528932A (en) * | 2013-10-27 | 2014-01-22 | 荆州市现代石油科技发展有限公司 | Multifunctional radial holder |
Non-Patent Citations (1)
| Title |
|---|
| 黄福堂等: "《压力密闭取心分析技术》", 31 March 2001 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441980A (en) * | 2015-08-07 | 2017-02-22 | 中国石油化工股份有限公司 | Rock sample coring device |
| CN106441980B (en) * | 2015-08-07 | 2018-11-23 | 中国石油化工股份有限公司 | Rock sample coring device |
| CN106226216A (en) * | 2016-07-05 | 2016-12-14 | 董润华 | A kind of core holding unit and measuring method thereof |
| CN109946437A (en) * | 2019-04-15 | 2019-06-28 | 西南石油大学 | A kind of Fractured compact reservoir working solution damage appraisement method for taking into account matrix and Fracture System |
| CN109946436A (en) * | 2019-04-15 | 2019-06-28 | 西南石油大学 | A kind of Fractured tight gas reservoir working solution damage appraisement method for taking into account matrix and crack |
| CN109946436B (en) * | 2019-04-15 | 2021-06-29 | 西南石油大学 | Fracture-property dense gas layer working fluid damage evaluation method considering both foundation block and fracture |
| CN109946437B (en) * | 2019-04-15 | 2021-07-23 | 西南石油大学 | Fractured compact reservoir working fluid damage evaluation method considering both base block and fracture system |
| CN116973292A (en) * | 2023-09-25 | 2023-10-31 | 中国石油大学(华东) | Multifunctional high-temperature high-pressure reservoir rock core damage evaluation experimental device and method |
| CN116973292B (en) * | 2023-09-25 | 2023-11-24 | 中国石油大学(华东) | Multifunctional high-temperature high-pressure reservoir rock core damage evaluation experimental device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104677805B (en) | 2018-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104677805A (en) | Rock core clamping device, pollution kettle and rock core damage evaluation experiment method | |
| CN206410979U (en) | Core holder for simulating hydraulic fracturing and permeability test | |
| CN209875145U (en) | Oil gas well cement sheath sealing integrity testing arrangement | |
| CN102707032A (en) | Three-axial rock core holding unit | |
| CN104122181B (en) | Working fluid is to reservoir permeability damage appraisement device | |
| CN111335837B (en) | Pressure-maintaining coring inner barrel for coal rock | |
| CN105181469A (en) | Rock naked triasial compression test apparatus and test method | |
| CN101942997B (en) | Cementing wall packer channeling checking instrument | |
| CN107014980B (en) | A kind of semi-open type core holding unit | |
| CN202562913U (en) | Three-axial core clamp holder | |
| GB2618010A (en) | System for measuring dynamic physical properties of rock | |
| CN210108909U (en) | Take water-cooled rock core holder | |
| CN105092383A (en) | Packer rubber setting visualization test apparatus | |
| CN204116254U (en) | The nuclear magnetic resonance rock core measurement mechanism of simulant bearing conditions of coal seam | |
| CN108181440B (en) | Experimental device for testing water quality index of reinjection water of large-scale underground water-sealed cave depot | |
| CN210571772U (en) | Well cementation cement slurry water invasion simulation evaluation instrument | |
| CN105445270B (en) | A kind of device changed for monitoring fluid phase state in porous media | |
| CN113607620B (en) | Experimental device and method for carbon dioxide directional fracturing and permeability testing | |
| CN113008686B (en) | Hard and brittle shale crack opening simulation device | |
| CN113484223B (en) | Full-diameter core holder | |
| CN203688415U (en) | Gradient core holding unit with pressure guide ring | |
| CN215598958U (en) | Rock core holder and rock core radial permeability measuring device | |
| CN205139137U (en) | Taper thread high pressure rock core holder | |
| CN112443288A (en) | Experimental device for evaluating sealing capability of two interfaces of well cementation cement sheath | |
| CN106940289B (en) | Thermal shrinkage sealing type multi-measuring-point oil-gas exploitation simulation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Applicant after: China Offshore Oil Group Co., Ltd. Applicant after: China Oilfield Services Limited Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Applicant before: China National Offshore Oil Corporation Applicant before: China Oilfield Services Limited |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |