CN104777087A - Core holding unit capable of applying axial pressure and radial pressure simultaneously - Google Patents
Core holding unit capable of applying axial pressure and radial pressure simultaneously Download PDFInfo
- Publication number
- CN104777087A CN104777087A CN201510174802.9A CN201510174802A CN104777087A CN 104777087 A CN104777087 A CN 104777087A CN 201510174802 A CN201510174802 A CN 201510174802A CN 104777087 A CN104777087 A CN 104777087A
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- pressure
- holding unit
- plug head
- core holding
- plug
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Abstract
The invention discloses a core holding unit capable of applying an axial pressure and a radial pressure simultaneously. The main technical scheme is as follows: the core holding unit comprises a pressure-bearing barrel, a sleeve, a fixing plug head, a rear compression cover and an adjustment plug head, wherein the sleeve is located in the pressure-bearing barrel and coaxial with the pressure-bearing barrel; the fixing plug head is fixedly installed at the rear end of the pressure-bearing barrel through the rear compression cover; a protecting ring is arranged at the tail end outside the fixing plug head, and a first distribution plug is arranged in the fixing plug head; the adjustment plug head is installed at the front end of the pressure-bearing barrel; a second distribution plug is arranged in the adjustment plug head; an axial pressure hole is formed outside the adjustment plug head; a radial pressure hole is formed in the pressure-bearing barrel. The core holding unit disclosed by the invention is capable of applying the axial pressure and the radial pressure simultaneously, really simulating the change rule of a reservoir permeability under underground temperature and pressure, and a circulating fluid flowing condition, and solving the limit of singly evaluating the instability of a well wall through a chemo-mechanical coupling model for shale extremely-low permeability and membrane efficiency tests, thus much benefiting to optimize a drilling fluid and well completion fluid system with the stable well wall.
Description
Technical field
The present invention relates to petroleum-based energy technical field, be specifically related to a kind of core holding unit that simultaneously can apply axle, radial pressure.
Background technology
Borehole well instability in drilling process, various complex situations about 70% are relevant to mud shale.Measuring core permeability is that during geologic prospecting and exploitation, oil and gas reservoir Protective strategy, mud shale test etc. are tested, not only important but also widely one worked.And mud shale clamper is used to measure the required a kind of specific purpose tool of mud shale core permeability.At present, the applying axle pressure that the core holding unit be widely used generally can only be single or radial pressure, can not every data variation of reservoir in real simulation oil well.
Summary of the invention
The object of this invention is to provide a kind of simulated environment of development experiments that can make truer, the core holding unit of axle, radial pressure can be applied simultaneously.
In order to solve the problem existing for background technology, the present invention is by the following technical solutions: one can apply axle simultaneously, the core holding unit of radial pressure, it comprises pressure-bearing cylinder 1, sleeve 2, fixing plug 3, rear pressing cover 4, regulate plug 5, it is inner that described sleeve 2 is positioned at described pressure-bearing cylinder 1, and the two concentric, described pressure-bearing cylinder 1 rear end fixedly mounts described fixing plug 3 by described rear pressing cover 4, the outside tail end of described fixing plug 3 is provided with guard ring 6, inside is provided with the first distribution plug 7, described pressure-bearing cylinder 1 front end is provided with described adjustment plug 5, described adjustment plug 5 inside is provided with the second distribution plug 8, described adjustment plug 5 outside offers axle pressure hole 9, described pressure-bearing cylinder 1 offers radial pressure hole 10.
Further, described adjustment plug 5 can be accessed by pressure measurement probe.
Further, described axle pressure hole 9 is communicated with described sleeve 2 inside.
Further, described sleeve 2 adopts the fluororubber of acid-alkali-corrosive-resisting or teflon to make.
The present invention has following beneficial effect: the present invention can apply axle, radial pressure simultaneously, can reservoir permeability Changing Pattern more under real simulation downhole temperature, pressure and circulatory fluid flow condition; Power (mechanics and the chemistry) coupling model that can solve single pass mud shale pole low-permeability and membrane efficiency test evaluates the limitation of borehole well instability, thus is more conducive to the drilling & completion fluid system being preferably applicable to wellbore stability.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present invention.
Description of reference numerals: pressure-bearing cylinder 1, sleeve 2, fixing plug 3, rear pressing cover 4, adjustment plug 5, guard ring 6, first distribution plug 7, second distribution plug 8, axle pressure hole 9, radial pressure hole 10.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
One can apply axle simultaneously, the core holding unit of radial pressure, it comprises pressure-bearing cylinder 1, sleeve 2, fixing plug 3, rear pressing cover 4, regulate plug 5, it is inner that described sleeve 2 is positioned at described pressure-bearing cylinder 1, and the two concentric, described pressure-bearing cylinder 1 rear end fixedly mounts described fixing plug 3 by described rear pressing cover 4, the outside tail end of described fixing plug 3 is provided with guard ring 6, inside is provided with the first distribution plug 7, described pressure-bearing cylinder 1 front end is provided with described adjustment plug 5, described adjustment plug 5 inside is provided with the second distribution plug 8, described adjustment plug 5 outside offers axle pressure hole 9, described pressure-bearing cylinder 1 offers radial pressure hole 10.
According to core holding unit provided by the invention, reservoir permeability Changing Pattern under energy real simulation downhole temperature, pressure and circulatory fluid flow condition, can build-up pressure transmission and chemosmosis test model by test, quantitative measurement mud shale pole low-permeability and membrane efficiency of shale; Power (mechanics and the chemistry) coupling model that can solve single pass mud shale pole low-permeability and membrane efficiency test evaluates the limitation of borehole well instability, thus is more conducive to the drilling & completion fluid system being preferably applicable to wellbore stability.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, other amendments that those of ordinary skill in the art make technical scheme of the present invention or equivalently to replace, only otherwise depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (4)
1. one kind can apply axle simultaneously, the core holding unit of radial pressure, it comprises pressure-bearing cylinder (1), sleeve (2), fixing plug (3), rear pressing cover (4), regulate plug (5), it is characterized in that, it is inner that described sleeve (2) is positioned at described pressure-bearing cylinder (1), and the two concentric, described pressure-bearing cylinder (1) rear end fixedly mounts described fixing plug (3) by described rear pressing cover (4), the outside tail end of described fixing plug (3) is provided with guard ring (6), inside is provided with the first distribution plug (7), described pressure-bearing cylinder (1) front end is provided with described adjustment plug (5), described adjustment plug (5) inside is provided with the second distribution plug (8), described adjustment plug (5) outside offers axle pressure hole (9), described pressure-bearing cylinder (1) offers radial pressure hole (10).
2. a kind of core holding unit that simultaneously can apply axle, radial pressure according to claim 1, is characterized in that, the accessible pressure measurement probe of described adjustment plug (5).
3. a kind of core holding unit that simultaneously can apply axle, radial pressure according to claim 1, is characterized in that, described axle pressure hole (9) is communicated with described sleeve (2) inside.
4. a kind of core holding unit that simultaneously can apply axle, radial pressure according to claim 1, is characterized in that, described sleeve (2) adopts the fluororubber of acid-alkali-corrosive-resisting or teflon to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510174802.9A CN104777087A (en) | 2015-04-14 | 2015-04-14 | Core holding unit capable of applying axial pressure and radial pressure simultaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510174802.9A CN104777087A (en) | 2015-04-14 | 2015-04-14 | Core holding unit capable of applying axial pressure and radial pressure simultaneously |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104777087A true CN104777087A (en) | 2015-07-15 |
Family
ID=53618696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510174802.9A Pending CN104777087A (en) | 2015-04-14 | 2015-04-14 | Core holding unit capable of applying axial pressure and radial pressure simultaneously |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104777087A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259333A (en) * | 2015-11-12 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Displacement device used for single core semi-permeable partition plate |
| CN109500763A (en) * | 2018-12-30 | 2019-03-22 | 常州市易用科技有限公司 | Core sample clamper |
| CN111323358A (en) * | 2020-04-14 | 2020-06-23 | 中国石油天然气集团有限公司 | Full-diameter shale core bedding seam drainage holder |
| CN113848163A (en) * | 2021-09-26 | 2021-12-28 | 中国石油大学(华东) | Core holder for porosity and permeability test under high-temperature high-pressure true triaxial stress |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4599891A (en) * | 1984-06-07 | 1986-07-15 | Temco, Inc. | TCH--tri-axial core holder |
| US5065421A (en) * | 1988-11-30 | 1991-11-12 | Societe Nationale Elf Aquitaine (Production) | Device for measuring fluid flows through a porous body |
| CN102590284A (en) * | 2012-02-02 | 2012-07-18 | 西南石油大学 | Device for measuring water saturation distribution of rock core at high temperature and high pressure |
| CN102707032A (en) * | 2012-05-17 | 2012-10-03 | 中国石油天然气股份有限公司 | Three-axial rock core holding unit |
| CN204536166U (en) * | 2015-04-14 | 2015-08-05 | 海安县石油科研仪器有限公司 | A kind of core holding unit that simultaneously can apply axle, radial pressure |
-
2015
- 2015-04-14 CN CN201510174802.9A patent/CN104777087A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4599891A (en) * | 1984-06-07 | 1986-07-15 | Temco, Inc. | TCH--tri-axial core holder |
| US5065421A (en) * | 1988-11-30 | 1991-11-12 | Societe Nationale Elf Aquitaine (Production) | Device for measuring fluid flows through a porous body |
| CN102590284A (en) * | 2012-02-02 | 2012-07-18 | 西南石油大学 | Device for measuring water saturation distribution of rock core at high temperature and high pressure |
| CN102707032A (en) * | 2012-05-17 | 2012-10-03 | 中国石油天然气股份有限公司 | Three-axial rock core holding unit |
| CN204536166U (en) * | 2015-04-14 | 2015-08-05 | 海安县石油科研仪器有限公司 | A kind of core holding unit that simultaneously can apply axle, radial pressure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259333A (en) * | 2015-11-12 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Displacement device used for single core semi-permeable partition plate |
| CN109500763A (en) * | 2018-12-30 | 2019-03-22 | 常州市易用科技有限公司 | Core sample clamper |
| CN109500763B (en) * | 2018-12-30 | 2024-01-02 | 常州市易用科技有限公司 | Core sample holder |
| CN111323358A (en) * | 2020-04-14 | 2020-06-23 | 中国石油天然气集团有限公司 | Full-diameter shale core bedding seam drainage holder |
| CN111323358B (en) * | 2020-04-14 | 2022-10-14 | 中国石油天然气集团有限公司 | Full-diameter shale core bedding seam drainage holder |
| CN113848163A (en) * | 2021-09-26 | 2021-12-28 | 中国石油大学(华东) | Core holder for porosity and permeability test under high-temperature high-pressure true triaxial stress |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150715 |