CN201917505U - Gas seepage starting pressure testing device in core - Google Patents
Gas seepage starting pressure testing device in core Download PDFInfo
- Publication number
- CN201917505U CN201917505U CN2010206052863U CN201020605286U CN201917505U CN 201917505 U CN201917505 U CN 201917505U CN 2010206052863 U CN2010206052863 U CN 2010206052863U CN 201020605286 U CN201020605286 U CN 201020605286U CN 201917505 U CN201917505 U CN 201917505U
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- valve
- pressure transducer
- holding unit
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Abstract
This utility model discloses a gas seepage starting pressure testing device in core, wherein a rubber sleeve is arranged in a core clamp, and the core is arranged in the rubber sleeve; a computer is connected with a high pressure injection pump, a pressure sensor PS1, a pressure sensor PS2, a pressure sensor PS3, a pressure sensor PS4, a valve V1 and a valve V2; the high pressure injection pump is connected with the annular space of the core clamp; a high pressure gas source is connected with a pressure-regulating valve, the valve V1, the pressure sensor PS1, the pressure sensor PS2, the pressure sensor PS3 and the boundary end of the core clamp; the outlet end of the core clamp is connected with the pressure sensor PS4 and the valve V2; and the size for the core clamp to be filled in the core is that the diameter is 2.5 cm, 3.8 cm or 10 cm and the length is less than 100 cm. The device can simply and intuitively test and determine the gas seepage starting pressure in the core; the operation process is automatically controlled, and the data is automatically monitored and judged; therefore, the automation degree is high.
Description
Technical field
The utility model relates in a kind of rock core gas seepage flow starting pressure test trial assembly and puts.
Background technology
At present, the method that is used for testing rock core gas seepage flow starting pressure mainly is " flow-pressure differential method " (as experimental technique of the article " low infiltration sandrock flow through oil reservoir starting pressure gradient experimental study " of document the 29th volume the 2nd phase " petroleum prospecting and exploitation " April in 2002 and the article of document the 29th volume the 3rd phase " petroleum gas journal (Jianghan Petroleum College's journal) " June in 2007 " Zhunger Basin middle part X block low permeability reservoir starting pressure ladder study " introduction).This method is to utilize test traffic and test pressure relation to carry out the function match to determine starting pressure, it is bigger to result's influence to test minimum test pressure in the method, and it is very small owing to airshed under low test pressure, be difficult to accurately detect, so there is certain difficulty in practical operation, often there is big systematic error in the experimental result that draws.In addition, in order to carry out the function match, every group of experiment needs to carry out 3 tests under the different pressures at least in this method, and the experimental work amount is big, and process is more loaded down with trivial details.In a word, can not carry out the simple, intuitive test to gas seepage flow starting pressure in the rock core by existing experimental technique and device.
The utility model content
But the utility model purpose is to provide the experimental provision of gas seepage flow starting pressure in a kind of simple, intuitive testing rock core.
Gas seepage flow starting pressure proving installation in a kind of rock core described in the utility model, by high-pressure air source, high pressure syringe pump, core holding unit, rubber sleeve, valve V1, valve V2, pressure transducer PS1, pressure transducer PS2, pressure transducer PS3, pressure transducer PS4, pressure regulator valve, computing machine, rock core is formed;
The rubber sleeve core holding unit of packing into, the rock core rubber sleeve of packing into;
Computing machine connects high pressure syringe pump, pressure transducer PS1, pressure transducer PS2, pressure transducer PS3, pressure transducer PS4, valve V1, valve V2; High pressure syringe pump connects the core holding unit annular space; High-pressure air source is connected with pressure regulator valve, valve V1, pressure transducer PS1, pressure transducer PS2, pressure transducer PS3, core holding unit border end; The core holding unit endpiece is connected with pressure transducer PS4, valve V2; Pack into the size of rock core of core holding unit: diameter is 2.5cm, 3.8cm, 10cm, and length is less than 100cm.
Needs are carried out the testing rock core sample packs into behind the core holding unit, add confined pressure by the rock core of computer controlled automatic high pressure syringe pump in core holding unit, the simulation overburden pressure, valve-off V2, to core sample hole saturated air, simulate the Gas Reservoir virgin pressure by high-pressure air source, pressure regulator valve; When saturated air to the equal balance of pressure rock core rear and front end pressure was the required pressure of experiment, computing machine automatic-closing valve V1 disconnected rock core and source of the gas, is in the pressure system of self; Open valve V2, gas in the rock core hole flows out naturally, automatically select to monitor, gather, handle rock core border end pressure in real time by computing machine with actual pore pressure size immediate pressure transducer PS1, pressure transducer PS2, pressure transducer PS2, data acquiring frequency be the per minute collection once, on the basis of image data, computer automatic drafting rock core boundary pore pressure and production time graph of a relation, according to rock core boundary pore pressure and time equilibrium relation, computing machine is determined starting pressure automatically.
Gas seepage flow starting pressure is an important evidence of judging that can gas effectively flow in the gas reservoir development process in reservoir, is to estimate particularly tight gas reservoir reserves development degree key parameter of gas reservoir.By the present invention can simple, intuitive ground gas seepage flow starting pressure in the rock core tested and determined, only need once test at every block of rock core, process is simple, adopt computing machine to judge automatically when determining starting pressure according to the terminal pressure equilibration time, the method of determining is reasonable, apparatus of the present invention can realize that operating process is controlled automatically, data are monitored automatically and judge the automaticity height.
Description of drawings
Fig. 1 is apparatus of the present invention structural representation.
Embodiment
Gas seepage flow starting pressure proving installation in a kind of rock core described in the utility model, by high-pressure air source GR, high pressure syringe pump HP-100A, core holding unit CG, rubber sleeve, valve V1, valve V2, pressure transducer PS1, pressure transducer PS2, pressure transducer PS3, pressure transducer PS4, pressure regulator valve PR, computer PC, rock core C forms.
Install each element annexation and see Fig. 2.
The rubber sleeve core holding unit CG that packs into, the rock core C rubber sleeve of packing into.
Computer PC connects high pressure syringe pump HP-100A, pressure transducer PS1, pressure transducer PS2, pressure transducer PS3, pressure transducer PS4, valve V1, valve V2, adopts cable to connect.
High pressure syringe pump HP-100A connects core holding unit CG annular space, and connecting used pipeline is high pressure resistant hollow pipeline.
High-pressure air source GR is connected with pressure regulator valve PR, valve V1, pressure transducer PS1, pressure transducer PS2, pressure transducer PS3, core holding unit CG border end, and connecting used pipeline is high pressure resistant hollow pipeline.
Core holding unit CG endpiece is connected with pressure transducer PS4, valve V2, and connecting used pipeline is high pressure resistant hollow pipeline.
Core holding unit CG can be high pressure resistant, and top pressure is 70MPa, the size of the rock core of can packing into: diameter is 2.5cm, 3.8cm, 10cm, and single core holding unit can be packed the length of rock core into less than 100cm.
Claims (1)
1. gas seepage flow starting pressure proving installation in the rock core, by high-pressure air source, high pressure syringe pump, core holding unit, rubber sleeve, valve V1, valve V2, pressure transducer PS1, pressure transducer PS2, pressure transducer PS3, pressure transducer PS4, pressure regulator valve, computing machine, rock core is formed; It is characterized in that: the rubber sleeve core holding unit of packing into, the rock core rubber sleeve of packing into; Computing machine connects high pressure syringe pump, pressure transducer PS1, pressure transducer PS2, pressure transducer PS3, pressure transducer PS4, valve V1, valve V2; High pressure syringe pump connects the core holding unit annular space; High-pressure air source is connected with pressure regulator valve, valve V1, pressure transducer PS1, pressure transducer PS2, pressure transducer PS3, core holding unit border end; The core holding unit endpiece is connected with pressure transducer PS4, valve V2; Pack into the size of rock core of core holding unit: diameter is 2.5cm, 3.8cm, 10cm, and length is less than 100cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206052863U CN201917505U (en) | 2010-11-11 | 2010-11-11 | Gas seepage starting pressure testing device in core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206052863U CN201917505U (en) | 2010-11-11 | 2010-11-11 | Gas seepage starting pressure testing device in core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201917505U true CN201917505U (en) | 2011-08-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206052863U Expired - Lifetime CN201917505U (en) | 2010-11-11 | 2010-11-11 | Gas seepage starting pressure testing device in core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201917505U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507414A (en) * | 2011-11-22 | 2012-06-20 | 中国石油天然气股份有限公司 | Core permeability experimental testing method and device under condition of stratum pressure |
| CN103808448A (en) * | 2014-02-19 | 2014-05-21 | 中国海洋石油总公司 | Measuring apparatus and method of pressure transmission time in fluid percolation environment |
| CN104297126A (en) * | 2014-10-17 | 2015-01-21 | 中国石油天然气股份有限公司 | Device and method applied to measurement of low-permeability reservoir gas seepage start-up pressure gradient |
-
2010
- 2010-11-11 CN CN2010206052863U patent/CN201917505U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507414A (en) * | 2011-11-22 | 2012-06-20 | 中国石油天然气股份有限公司 | Core permeability experimental testing method and device under condition of stratum pressure |
| CN102507414B (en) * | 2011-11-22 | 2014-05-14 | 中国石油天然气股份有限公司 | Core permeability experimental testing method and device under condition of stratum pressure |
| CN103808448A (en) * | 2014-02-19 | 2014-05-21 | 中国海洋石油总公司 | Measuring apparatus and method of pressure transmission time in fluid percolation environment |
| CN103808448B (en) * | 2014-02-19 | 2016-02-10 | 中国海洋石油总公司 | The measuring method of pressure conduction time in a kind of fluid neuron network environment |
| CN104297126A (en) * | 2014-10-17 | 2015-01-21 | 中国石油天然气股份有限公司 | Device and method applied to measurement of low-permeability reservoir gas seepage start-up pressure gradient |
| CN104297126B (en) * | 2014-10-17 | 2016-08-31 | 中国石油天然气股份有限公司 | low permeability reservoir gas seepage starting pressure gradient measuring device and measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |