CN210108909U - Take water-cooled rock core holder - Google Patents
Take water-cooled rock core holder Download PDFInfo
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- CN210108909U CN210108909U CN201920858272.3U CN201920858272U CN210108909U CN 210108909 U CN210108909 U CN 210108909U CN 201920858272 U CN201920858272 U CN 201920858272U CN 210108909 U CN210108909 U CN 210108909U
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- rubber sleeve
- holder
- barrel
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Abstract
The utility model provides a take water-cooled rock core holder, including holder barrel, rock core centre gripping subassembly and various barrel seal assemblies. The core holding assembly consists of a rubber sleeve, a rubber sleeve end plug and a holding assembly sealing cap; the rubber sleeve end plug is matched with the rubber sleeve for use, so that the rock core can be tightly wrapped; the cylinder body sealing assembly consists of a cylinder body end plug, a cylinder body sealing cover, an annular sealing ring, a rubber gasket and a cylinder body sealing cap; the cylinder body is end-plugged at two ends of the cylinder body and is of an outward convex structure, so that the cylinder body can be effectively sealed, and hydraulic oil in the hydraulic cylinder is prevented from leaking; the rubber sleeve end plug is connected with the rubber sleeve, and the cylinder sealing cover is connected with the cylinder through threads; the periphery of the holder cylinder is designed with a water cooling system, so that the air tightness of the device and the sealing performance of a hydraulic system in a high-temperature state are ensured. The utility model provides a take water-cooled rock core holder not only sealing performance is good, simple structure, convenient to use, can also satisfy the experiment demand of different diameter rock cores.
Description
Technical Field
The utility model relates to a rock core holder especially relates to a take water-cooled rock core holder.
Background
The core holder is an appliance used for holding, protecting and sealing a cylindrical surface or an end surface when a laboratory measures the seepage characteristics of a rock sample or performs a displacement test, and is an indispensable important auxiliary component in the development of experimental instruments and devices. The core holder is a basic assembly widely applied in development tests, and is mainly used for geological exploration and related development research of petroleum and natural gas, and related tests such as permeability, porosity and other formation damages related to a core are completed in the core holder by taking the core from a target formation, so that various physical parameters of the core and fluid are obtained, and related characteristics of the formation are further reflected. The core holder has single purpose, and is mainly used for holding and stabilizing a core, controlling various simulated formation parameters and forming a closed space, completing tests of various simulated environments and obtaining test parameters.
There are four main types according to their structure: (1) heusler (Hassler) type core holders. The core holder is the most common core holder in the current core analysis, has the characteristic of convenient use, and is unnecessary to be completely disassembled when a rock sample is loaded and taken out. And sealing the side wall of the rock sample by applying radial pressure on the cylindrical surface of the rock sample, and discharging fluid from one end surface and the other end surface to perform testing. If the horizontal permeability of the full-diameter core is measured, a part of window is opened on the cylindrical surface of the side wall by using a metal net for ventilation, and the end face is sealed by using a rubber mat. The working pressure of the core holder is below 35MPa mostly, but can reach 70 MPa. (2) A bi-axial core holder (also known as a hydrostatic core holder, also known as a hydrostatically loaded core holder). The same axial and radial pressure is applied to the face of the rock sample and the surrounding cylindrical surface. The holder is mostly used for measuring the pore volume compression coefficient of a rock sample and the porosity permeability under overburden pressure and carrying out a displacement test of a full-diameter rock core, and because great pressure is applied to a rubber sleeve and the end head of the rock core, the anti-leakage performance is good, and the working pressure can reach 105 MPa. (3) Triaxial core holder. Different axial pressure and radial pressure are applied to the end face and the peripheral cylindrical surface of the rock sample respectively, and the rock sample is mainly used for displacement tests of full-diameter rock cores (simulating the seepage characteristics of fluid when overburden rock pressure and formation flowing pressure change). The working pressure can reach 105 MPa. (4) A rock core holder with a pressure measuring hole. The core holder adopts a basic type similar to Hasteller, biaxial and triaxial loads, and pressure measuring holes are axially arranged along a core holder bushing. It is generally used for tertiary oil recovery core displacement test, relative permeability determination, formation damage test and the like. The pressure drop of different positions of water injection or injection oil displacement agent in-process rock specimen can be measured to the pressure tap, monitors the pressure variation condition of rock specimen along the axis direction, and analysis rock specimen blocks up reason and blocks up the degree.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the prior art, the utility model provides a take water-cooled rock core holder can utilize its realization to pressure and temperature under the rock core simulation stratum condition of different diameters.
The utility model provides a take water-cooled rock core holder, including holder barrel, rock core centre gripping subassembly and various seal assembly. A core clamping assembly is arranged at the center of the holder cylinder; the core holding assembly mainly comprises a rubber sleeve and a rubber sleeve end plug; the rubber sleeve and the rubber sleeve are plugged in the holder cylinder, and the rubber sleeve is arranged on the periphery of the core sample; the rubber sleeve end plugs are positioned at two ends of the rubber sleeve and are matched with the core rubber sleeve and the clamping assembly sealing cap for use, so that a core sample can be tightly wrapped; the periphery of the holder barrel is designed with a water cooling system, and the water cooling system is provided with a liquid inlet and a liquid outlet.
Preferably, the core holding assembly consists of a rubber sleeve, a rubber sleeve end plug and a holding assembly sealing cap;
preferably, the rubber sleeve end plug is a sealing end plug of a rubber sleeve, and the rubber sleeve is of a hollow structure;
preferably, the barrel end plug is of an outward convex structure and is arranged at two ends of the gripper barrel;
preferably, an annular sealing ring is arranged between the barrel end plug and the gripper barrel;
preferably, a hydraulic oil inlet is formed in the outer side of the gripper cylinder and connected with an external hydraulic pump;
preferably, the barrel, the rubber sleeve end plug, the barrel end plug and the barrel sealing cover are coaxially arranged;
preferably, the rubber sleeve and the rubber sleeve end plug and the barrel sealing cover are connected by threads;
preferably, the water-cooling liquid inlet and the water-cooling liquid outlet are arranged outside the cylinder body and can be connected with an external cooling water circulating pump.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model provides a core holder with water cooling, which adopts a double-end plug system, namely a rubber sleeve end plug and a barrel end plug, and realizes the sealing of the core holder assembly and the holder; the rubber sleeve end plug is matched with the rubber sleeve for use, so that the core sample can be tightly wrapped; in addition, the diameter-changing function can be realized by replacing the rubber sleeve end plug and the rubber sleeve according to the size of the core sample, so that the experiment requirements on cores with different diameters are met;
(2) in order to eliminate the influence of overhigh temperature of the cylinder body on the tightness, a water cooling system is introduced into the device. A circulating water path is designed outside the cylinder, and circulating cooling water is introduced during experiments to ensure that the rubber sealing ring is not damaged by high temperature, so that the air tightness of the device and the sealing performance of a hydraulic system in a high-temperature state are ensured;
(3) the utility model provides a take water-cooled rock core holder adopts open assembly loading and unloading design, can pull out the holder with gum cover end plug and rubber gum cover through the barrel seal assembly that takes off holder one side, carries out the dismantlement and the change of gum cover end plug, rock core sample and rubber gum cover under the completely open condition, and easy operation is convenient.
Drawings
Fig. 1 is a schematic structural view of a rock core holder provided by the present invention;
shown in the figure: 1-core sample; 2-rubber sleeve; 3-plugging the end of the rubber sleeve; 4-a clamping assembly sealing cap; 5-ring seal ring; 6-end plugging of the cylinder body; 7-cylinder sealing cover; 8-a rubber gasket; 9-cylinder sealing cap; 10-a cylinder body; 11-water cooling the liquid inlet; 12-water cooling the liquid outlet; 13-hydraulic oil inlet; 14-clamping assembly sealing threads; 15-cylinder sealing screw thread; 16-displacement fluid line; 17-hydraulic cylinder.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in the attached drawings, the attached drawings are the structure schematic diagram of the rock core holder provided by the utility model. The utility model provides a rock core holder includes: core sample 1; a rubber sleeve 2; a rubber sleeve end plug 3; a clamping assembly sealing cap 4; an annular seal ring 5; a barrel end plug 6; a cylinder sealing cover 7; a rubber gasket 8; a cylinder sealing cap 9; a cylinder 10; water-cooling the liquid inlet 11; a water-cooled liquid outlet 12; a hydraulic oil inlet 13; clamp assembly seal threads 14; barrel seal threads 15; a displacement fluid line 16; a hydraulic cylinder 17;
the holder cylinder 10 is of a hollow structure, a core holding assembly is arranged in the center of the holder cylinder 10 and consists of a rubber sleeve 2, a rubber sleeve end plug 3 and a holding assembly sealing cap 4; the rubber sleeve end plug 3 and the rubber sleeve 2 are matched for use, so that the core sample 1 can be sealed. The cylinder end plugs 6 are of an outward convex structure and are arranged at two ends of the cylinder 10 of the clamp holder; an annular sealing ring 5 is arranged between the cylinder end plug 6 and the cylinder 10 of the gripper; the rubber sleeve end plug 3 is connected with the rubber sleeve 2 through a clamping component sealing thread 14, the cylinder sealing cover 7 is connected with the cylinder 10 through a cylinder sealing thread 15, and a rubber gasket 8 is arranged between the cylinder sealing cover 7 and the cylinder sealing cover 9.
One side of the holder cylinder 10 is provided with a hydraulic oil inlet 13, the hydraulic oil inlet 13 is connected with an external hydraulic pump, and hydraulic oil is injected into the hydraulic cylinder 17 to apply pressure to the rock core; the outside of the holder cylinder 10 is provided with a water cooling system, and during experiments, circulating cooling water is injected through the water cooling liquid inlet 11 and is discharged from the water cooling liquid outlet 12, so that the rubber sealing ring can be prevented from being damaged by high temperature, and the air tightness of the device and the sealing performance of a hydraulic system in a high-temperature state are ensured.
The utility model provides a rock core holder can be experimented the rock core of multiple diameter, at first places rock core sample 1 in the inside of rubber gum cover 2, connects according to the structure that figure 1 shows again. When a hydraulic pump connected with the hydraulic oil inlet 13 applies pressure, the hydraulic cylinder 17 is filled with hydraulic oil, the rubber sleeve 2 deforms towards the center position, and pressure is applied to the core sample 1. The diameter-changing function can be realized by replacing the rubber sleeve end plug 3 and the rubber sleeve 2 according to the size of the rock core sample 1, and the experiment requirements on rock cores with different diameters are met.
Claims (8)
1. A core holder with water cooling comprises a holder cylinder, a core holding assembly and a sealing assembly; a core clamping assembly is arranged at the center of the holder cylinder; the core holding assembly mainly comprises a rubber sleeve and a rubber sleeve end plug; the rubber sleeve and the rubber sleeve are plugged in the holder cylinder, and the rubber sleeve is arranged on the periphery of the core sample; the rubber sleeve end plugs are positioned at two ends of the rubber sleeve and are matched with the core rubber sleeve and the clamping assembly sealing cap for use, so that the core sample can be tightly wrapped; the periphery of the holder barrel is designed with a water cooling system, and the water cooling system is provided with a water cooling liquid inlet and a water cooling liquid outlet.
2. The water-cooled core holder according to claim 1, wherein the rubber sleeve end plug is a sealing end plug of a rubber sleeve, and the rubber sleeve end plug and the rubber sleeve are connected through a holding assembly in a sealing and threaded manner.
3. The water-cooled core holder as recited in claim 1, wherein the barrel end plugs are of an outwardly convex configuration and are disposed at opposite ends of the holder barrel.
4. The water-cooled core holder as in claim 3, wherein an annular seal is disposed between the barrel end plug and the holder barrel.
5. The water-cooled core holder as in claim 1, wherein the holder barrel is connected to the barrel seal cap by barrel seal threads.
6. The water-cooled core holder according to claim 1, wherein the seal assembly comprises a barrel seal cap, and a rubber gasket is disposed between the barrel seal cap and the barrel seal cap.
7. The water-cooled core holder according to claim 1, wherein a hydraulic oil inlet is provided at an outer side of the holder barrel, the hydraulic oil inlet is connected to an external hydraulic pump, and the hydraulic pump applies pressure to the core holding assembly by injecting hydraulic oil into a hydraulic cylinder inside the barrel.
8. The core holder with the water cooling function as claimed in claim 1, wherein a water cooling system is arranged outside the holder barrel, and during experiments, circulating cooling water is injected through a water cooling inlet and discharged from the water cooling outlet, so that the rubber sealing ring is prevented from being damaged by high temperature, and the air tightness of the device and the sealing performance of a hydraulic system in a high-temperature state are ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920858272.3U CN210108909U (en) | 2019-06-10 | 2019-06-10 | Take water-cooled rock core holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920858272.3U CN210108909U (en) | 2019-06-10 | 2019-06-10 | Take water-cooled rock core holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210108909U true CN210108909U (en) | 2020-02-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920858272.3U Expired - Fee Related CN210108909U (en) | 2019-06-10 | 2019-06-10 | Take water-cooled rock core holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210108909U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337406A (en) * | 2020-03-20 | 2020-06-26 | 江苏联友科研仪器有限公司 | Core holder for leak-free pulse permeability test |
| CN112763391A (en) * | 2020-12-28 | 2021-05-07 | 中国科学院武汉岩土力学研究所 | Variable-diameter core holder |
| CN113008941A (en) * | 2021-02-02 | 2021-06-22 | 东北石油大学 | Core holder for bedding joint development shale, resistivity tester and method |
-
2019
- 2019-06-10 CN CN201920858272.3U patent/CN210108909U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337406A (en) * | 2020-03-20 | 2020-06-26 | 江苏联友科研仪器有限公司 | Core holder for leak-free pulse permeability test |
| CN112763391A (en) * | 2020-12-28 | 2021-05-07 | 中国科学院武汉岩土力学研究所 | Variable-diameter core holder |
| CN113008941A (en) * | 2021-02-02 | 2021-06-22 | 东北石油大学 | Core holder for bedding joint development shale, resistivity tester and method |
| CN113008941B (en) * | 2021-02-02 | 2021-09-07 | 东北石油大学 | Method for testing saturation-resistance increase coefficient of bedding joint development shale |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200221 Termination date: 20210610 |