CN110927045A - Long coal petrography sample gas-liquid seepage pressure chamber - Google Patents
Long coal petrography sample gas-liquid seepage pressure chamber Download PDFInfo
- Publication number
- CN110927045A CN110927045A CN201911359179.9A CN201911359179A CN110927045A CN 110927045 A CN110927045 A CN 110927045A CN 201911359179 A CN201911359179 A CN 201911359179A CN 110927045 A CN110927045 A CN 110927045A
- Authority
- CN
- China
- Prior art keywords
- long
- sleeve
- steel cylinder
- pressure
- rock sample
- 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
Images
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
Abstract
The invention discloses a long coal rock sample gas-liquid seepage pressure chamber which comprises a long steel cylinder, an annular pressure transmission rubber sleeve and two end connection gas sealing heads, wherein an annular pressure application cavity is formed between the annular pressure transmission rubber sleeve and the long steel cylinder, an axial pressure application piston is arranged behind one end connection gas sealing head, a first pressing sleeve and a second pressing sleeve are sequentially and axially sleeved outside the axial pressure application piston, the first pressing sleeve and the second pressing sleeve are fixedly arranged behind the long steel cylinder, a heating and heat-insulating sleeve is wrapped outside the long steel cylinder, the heating and heat-insulating sleeve is formed by splicing a plurality of sections, each section can be independently heated, a plurality of temperature sensors which are arranged in a straight line are arranged on the side wall of the long steel cylinder along the length direction, and the interface of the adjacent two sections of the heating and heat-insulating sleeve is positioned between the two temperature sensors. The method can simulate the gas-liquid seepage situation more truly, reflect the mutual influence of the seepage of the gas and the liquid in different stratums more truly, and improve the test efficiency.
Description
Technical Field
The invention belongs to the technical field of coal rock sample simulation test equipment, and particularly relates to a pressure chamber structure for performing a gas-liquid seepage simulation test on a long coal rock sample.
Background
The temperature of the coal rock sample varies from formation to formation. At present, in a coal rock sample gas-liquid seepage test, multiple tests are respectively carried out aiming at different temperatures, and the test efficiency is low; and because different temperature test experiments are independent, the mutual influence of gas and liquid in different stratums can not be simulated really, and certain limitation exists.
Disclosure of Invention
The invention aims to provide a special pressure chamber for a coal rock sample gas-liquid seepage simulation test, which can simulate gas-liquid seepage conditions more truly, reflect the mutual influence of gas-liquid seepage in different stratums more truly and improve the test efficiency.
Therefore, the technical scheme adopted by the invention is as follows: a long coal rock sample gas-liquid seepage pressure chamber comprises a long steel cylinder, a ring pressure transmission rubber sleeve and two end connection air seal heads, wherein the ring pressure transmission rubber sleeve and the two end connection air seal heads are installed in the long steel cylinder to form a long coal rock sample cavity in a long strip shape, a ring pressure application cavity is formed between the ring pressure transmission rubber sleeve and the long steel cylinder, two ring pressure high-pressure liquid interfaces which are opposite to the ring pressure application cavity are arranged on the outer wall of the long steel cylinder, an axial pressure application piston is arranged at the rear of one end connection air seal head, a first pressure sleeve and a second pressure sleeve are sequentially axially sleeved outside the axial pressure application piston, the first pressure sleeve and the second pressure sleeve are fixedly installed at the rear of the long steel cylinder, two axial high-pressure liquid interfaces are arranged on the side wall of the second pressure sleeve, a heating and heat insulation sleeve is wrapped outside the long steel cylinder and spliced by a plurality of sections, and each section can be independently heated, the side wall of the long steel cylinder is provided with a plurality of temperature sensors which are arranged in a line along the length direction, and the interface of two adjacent sections of the heating and heat-insulating sleeve is positioned between the two temperature sensors.
The core innovation of the pressure chamber comprises: (1) selecting a strip-shaped long coal rock sample cavity for placing a long coal rock sample; (2) the long steel cylinder is wrapped by a heating and heat-insulating sleeve which is formed by segmented splicing, each segment can be independently heated, the long coal rock sample of the long coal rock sample cavity can be heated in a segmented mode, and the long coal rock sample can be heated to different temperatures according to needs; (3) a plurality of temperature sensors which are arranged in a line are arranged on the side wall of the long steel cylinder along the length direction and are used for monitoring the heating temperature of different sections of the long coal rock sample, so that the seepage condition of gas and liquid in various complex strata can be simulated really.
Preferably, a plurality of radial strain force sensor mounting holes are reserved in the side wall of the long steel cylinder along the length direction, and the radial strain force sensor mounting holes and the temperature sensors are circumferentially staggered and arranged in one-to-one correspondence.
Preferably, the heating and heat-insulating sleeve is made of silicon rubber, the heating and heat-insulating sleeve is rectangular after being unfolded, two ends of the heating and heat-insulating sleeve are fixed into a ring through magic tapes or adhesive buckles, and two adjacent sections are hooked together to achieve seamless connection.
More preferably, the length of the long coal rock sample cavity is 400 +/-100 mm, and the diameter of the long coal rock sample cavity is phi 52 +/-10 mm.
More preferably, the number of the temperature sensor and the radial strain sensor mounting holes is 4-6 respectively, and the heating insulation sleeve is divided into 4-6 sections correspondingly.
The invention has the beneficial effects that: the pressure chamber can heat the long coal rock sample to different temperatures in sections at one time, and the heating temperatures of the different sections of the long coal rock sample are monitored through the temperature sensors, so that the seepage condition of gas and liquid in multiple complex stratums is simulated more truly, the mutual influence of the gas and liquid in the multiple complex stratums is reflected more truly, the test efficiency is obviously improved, the test result has higher practical guiding significance, and the reliable guarantee is provided for the safe exploitation of a coal bed.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in figure 1, the long coal rock sample gas-liquid seepage pressure chamber mainly comprises a long steel cylinder 1, an annular pressure transmission rubber sleeve 2, an end head gas-receiving end socket 3, an axial pressure applying piston 4, a first pressing sleeve 5, a second pressing sleeve 6, a heating insulation sleeve 7 and a temperature sensor 8.
The ring pressure transmission rubber sleeve 2 and the two end gas-receiving seal heads 3 are both arranged in the long steel cylinder 1. The ring pressure transmission rubber sleeve 2 is coaxially sleeved in the long steel cylinder 1, and the two end air-receiving seal heads 3 are respectively positioned at the left end and the right end of the long steel cylinder 1 for plugging; meanwhile, axial holes are formed in the two end gas connecting seal heads 3, one of the axial holes is used as a gas inlet connector, and the other axial hole is used as a gas exhaust connector.
The annular pressure transmission rubber sleeve 2 and the two end gas-receiving seal heads 3 enclose a long coal rock sample cavity A in a strip shape. Preferably, the length of the long coal rock sample cavity A is 400 +/-100 mm, the diameter is phi 52 +/-10 mm, and the length of the long coal rock sample cavity A is as follows: the diameter is more than or equal to 6: 1.
And a ring pressure applying cavity B is formed between the ring pressure transmission rubber sleeve 2 and the long steel cylinder 1, and two ring high-pressure liquid interfaces a which are right opposite to the ring pressure applying cavity B are arranged on the outer wall of the long steel cylinder 1. Two ring direction high pressure hydraulic connector a advance one and go out, exert the chamber B for the ring pressure and exert the ring pressure, because the ring pressure transmission gum cover 2 pressurized can produce the deformation to the long coal rock sample of long coal rock sample chamber A is transmitted to the ring pressure.
An axial pressure applying piston 4 is arranged behind one of the end air-receiving end sockets 3, and a first pressing sleeve 5 and a second pressing sleeve 6 are sequentially and axially sleeved outside the axial pressure applying piston 4. The first pressing sleeve 5 and the second pressing sleeve 6 are fixedly arranged behind the long steel cylinder 1. Two axial high-pressure liquid ports b are formed in the side wall of the second pressure sleeve 6, and the two axial high-pressure liquid ports b are arranged in and out of the two rings. The outer wall of the axial pressure applying piston 4 is provided with a circumferential boss 4a, and the axial pressure applying piston 4 is pushed to move axially by controlling the pressure of the circumferential boss 4a in the front cavity and the pressure of the rear cavity, so that the axial pressure is transmitted to a long coal rock sample in the long coal rock sample cavity A.
The heating insulation sleeve 7 is wrapped outside the long steel cylinder 1, the heating insulation sleeve 7 is formed by splicing a plurality of sections, each section can be independently heated, the long coal rock sample of the long coal rock sample cavity A can be heated in sections respectively, and the long coal rock samples can be heated to different temperatures according to needs. In actual operation, the heating temperature of each section of the long coal rock sample is sequentially increased or decreased gradually, so that the seepage condition of gas and liquid in the complex stratum is simulated more truly, and the mutual influence of the gas and liquid in the complex stratum during seepage is reflected more truly.
A plurality of temperature sensors 8 which are arranged in a line are arranged on the side wall of the long steel cylinder 1 along the length direction, and the interface of two adjacent sections of the heating and heat-insulating sleeve 7 is positioned between the two temperature sensors 8. The temperature sensor 8 monitors the heating temperature of each section of the long coal rock sample at any time, and accurate control is realized.
Preferably, a plurality of radial strain force sensor mounting holes 1a arranged in a line are reserved on the side wall of the long steel cylinder 1 along the length direction, and the radial strain force sensor mounting holes 1a and the temperature sensors 8 are circumferentially staggered and arranged in one-to-one correspondence. Add radial strain force transducer mounting hole 1a for install radial strain force transducer, utilize same long steel cylinder 1 can carry out long coal rock sample gas-liquid temperature rise absorption expansion test experiment and the gas-liquid seepage flow test of long coal rock sample respectively, when the gas-liquid temperature rise absorption expansion test experiment of long coal rock sample needs to carry out, take off ring pressure transmission gum cover 2, and change other end and connect the gas head, radial strain force transducer and axial strain force transducer are installed, change heating insulation cover 7 simultaneously, choose for use to open the heating insulation cover that has the confession radial strain force transducer via hole.
The heating and heat-insulating sleeve 7 is preferably made of silicon rubber, the heating and heat-insulating sleeve 7 is rectangular after being unfolded, two ends of the heating and heat-insulating sleeve 7 are fixed into a ring through magic tapes or adhesive buckles, and two adjacent sections are hooked together to achieve seamless connection, so that the installation is convenient and reliable.
Preferably, the temperature sensor 8 and the radial strain force sensor mounting hole 1a are respectively 4-6, and the heating insulation sleeve 7 is divided into 4-6 sections.
Claims (5)
1. A long coal rock sample gas-liquid seepage pressure chamber comprises a long steel cylinder (1), a ring pressure transmission rubber sleeve (2) and two end gas-receiving seal heads (3) which are arranged in the long steel cylinder (1), wherein the ring pressure transmission rubber sleeve (2) and the two end gas-receiving seal heads (3) enclose a long coal rock sample cavity (A) in a long strip shape, a ring pressure applying cavity (B) is formed between the ring pressure transmission rubber sleeve (2) and the long steel cylinder (1), two ring pressure high-pressure liquid interfaces (a) which are opposite to the ring pressure applying cavity (B) are arranged on the outer wall of the long steel cylinder (1), an axial pressure applying piston (4) is arranged at the rear part of one end gas-receiving seal head (3), a first pressure sleeve (5) and a second pressure sleeve (6) are sequentially axially sleeved outside the axial pressure applying piston (4), and the first pressure sleeve (5) and the second pressure sleeve (6) are fixedly arranged at the rear part of the long steel cylinder (1), be provided with two axial high-pressure liquid interfaces (b), its characterized in that on the lateral wall of second pressure cover (6): the long steel cylinder (1) is wrapped with a heating insulation sleeve (7), the heating insulation sleeve (7) is formed by splicing a plurality of sections, each section can be independently heated, a plurality of temperature sensors (8) which are arranged in a straight line are arranged on the side wall of the long steel cylinder (1) along the length direction, and the interface of two adjacent sections of the heating insulation sleeve (7) is positioned between the two temperature sensors (8).
2. The long coal rock sample gas-liquid seepage pressure chamber of claim 1, wherein: a plurality of radial strain force sensor mounting holes (1a) which are arranged in a line are reserved in the side wall of the long steel cylinder (1) along the length direction, and the radial strain force sensor mounting holes (1a) and the temperature sensors (8) are circumferentially staggered and arranged in a one-to-one correspondence manner.
3. The long coal rock sample gas-liquid seepage pressure chamber of claim 1, wherein: the heating insulation sleeve (4) is made of silicon rubber, the heating insulation sleeve (4) is rectangular after being unfolded, two ends of the heating insulation sleeve (4) are fixed into a ring through magic tapes or bonding buckles, and adjacent two sections are hooked together to achieve seamless connection.
4. The long coal rock sample gas-liquid seepage pressure chamber of claim 1, wherein: the length of the long coal rock sample cavity (A) is 400 +/-100 mm, and the diameter of the long coal rock sample cavity (A) is phi 52 +/-10 mm.
5. The long coal rock sample gas-liquid seepage pressure chamber of claim 2, wherein: the temperature sensor (8) and the radial strain force sensor mounting holes (1a) are respectively 4-6, and correspondingly, the heating insulation sleeve (4) is divided into 4-6 sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911359179.9A CN110927045B (en) | 2019-12-25 | 2019-12-25 | Long coal petrography sample gas-liquid seepage pressure chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911359179.9A CN110927045B (en) | 2019-12-25 | 2019-12-25 | Long coal petrography sample gas-liquid seepage pressure chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110927045A true CN110927045A (en) | 2020-03-27 |
| CN110927045B CN110927045B (en) | 2020-09-25 |
Family
ID=69862023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911359179.9A Active CN110927045B (en) | 2019-12-25 | 2019-12-25 | Long coal petrography sample gas-liquid seepage pressure chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110927045B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067596A (en) * | 2007-07-05 | 2007-11-07 | 颜鹏 | Airosol hydrophilic character observation system |
| CN101216405A (en) * | 2007-12-28 | 2008-07-09 | 重庆大学 | Coal rheology seepage flow test device |
| US20080282790A1 (en) * | 2004-01-27 | 2008-11-20 | Lehigh University | Method and Apparatus for Characterizing Coal Tar in Soil |
| CN103758512A (en) * | 2013-12-30 | 2014-04-30 | 中国石油天然气股份有限公司 | Reaction and seepage characteristic integrated test method and device in oil reservoir |
| CN106285594A (en) * | 2016-08-22 | 2017-01-04 | 西安交通大学 | A kind of sand-filling tube combination device and boundary temperature control method thereof |
| CN109989734A (en) * | 2019-05-16 | 2019-07-09 | 西南石油大学 | Underground Segmented heating device |
| CN110530771A (en) * | 2019-09-02 | 2019-12-03 | 重庆大学 | Pressure chamber is used in the test of coal petrography sample gas flow |
-
2019
- 2019-12-25 CN CN201911359179.9A patent/CN110927045B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080282790A1 (en) * | 2004-01-27 | 2008-11-20 | Lehigh University | Method and Apparatus for Characterizing Coal Tar in Soil |
| CN101067596A (en) * | 2007-07-05 | 2007-11-07 | 颜鹏 | Airosol hydrophilic character observation system |
| CN101216405A (en) * | 2007-12-28 | 2008-07-09 | 重庆大学 | Coal rheology seepage flow test device |
| CN103758512A (en) * | 2013-12-30 | 2014-04-30 | 中国石油天然气股份有限公司 | Reaction and seepage characteristic integrated test method and device in oil reservoir |
| CN106285594A (en) * | 2016-08-22 | 2017-01-04 | 西安交通大学 | A kind of sand-filling tube combination device and boundary temperature control method thereof |
| CN109989734A (en) * | 2019-05-16 | 2019-07-09 | 西南石油大学 | Underground Segmented heating device |
| CN110530771A (en) * | 2019-09-02 | 2019-12-03 | 重庆大学 | Pressure chamber is used in the test of coal petrography sample gas flow |
Non-Patent Citations (2)
| Title |
|---|
| JIANMEI WANG 等: "Impact of temperature and pressure on the characteristics of two-phase flow in coal", 《FUEL》 * |
| 肖伟晶: "渗压作用下岩石承载过程渗透特性及损伤演化机理研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110927045B (en) | 2020-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180136099A1 (en) | Rock Hollow Cylinder Torsional Shear Apparatus | |
| CN110927045B (en) | Long coal petrography sample gas-liquid seepage pressure chamber | |
| CN104089327A (en) | Energy-saving superconductive heat energy conveying pipe | |
| CN110987764B (en) | Long coal rock sample gas-liquid seepage test system | |
| CN205138890U (en) | Rock core holder with self -heating function | |
| CN104704278A (en) | Pipe connection for conducting a fluid that is under pressure | |
| CN110823467A (en) | High-pressure sealing ring testing device and testing method | |
| CN108318345B (en) | Multi-azimuth borehole fracture pressure testing device | |
| CN107401534B (en) | With the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving | |
| CN110927203B (en) | Long coal petrography sample gas-liquid temperature rise adsorption expansion test chamber | |
| CN108518213B (en) | Rock high-temperature high-pressure superheated steam control fracturing test device | |
| CN113565515A (en) | Device and method for testing pore water pressure in site during subway communication channel freezing method construction | |
| CN111007100B (en) | Long coal rock sample solid-gas coupling adsorption expansion test system | |
| CN102788692A (en) | Thermal state seal test device of superhigh temperature hot valve | |
| CN108693069A (en) | Ickings desorption of mash gas characteristic parameter drill with brill measurement device | |
| CN106801650A (en) | A kind of pressure-actuated self adaptation pulse-knocking engine valve system | |
| CN202648938U (en) | Thermal state sealing test device of super high temperature hot valve | |
| CN202869799U (en) | Clamp type folio ring pressure test blind plate | |
| CN109469466B (en) | Concentric double-pipe injection-production horizontal well physical simulation device for heavy oil thermal production | |
| CN209764342U (en) | Thermal recovery packing element locking test device | |
| CN103161438B (en) | Tubular column of perforation fracturing test system | |
| CN108518214B (en) | Rock high-temperature high-pressure superheated steam controlled fracturing test method | |
| CN203848334U (en) | Heat loss testing device for electric igniters | |
| CN208633813U (en) | A kind of monitoring coal body drilling transformation-temperature-gas flow device | |
| CN203533673U (en) | Superconductive floor heating pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |