CN102758606A - Ground injection system for coal bed gas testing - Google Patents
Ground injection system for coal bed gas testing Download PDFInfo
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- CN102758606A CN102758606A CN2011101089485A CN201110108948A CN102758606A CN 102758606 A CN102758606 A CN 102758606A CN 2011101089485 A CN2011101089485 A CN 2011101089485A CN 201110108948 A CN201110108948 A CN 201110108948A CN 102758606 A CN102758606 A CN 102758606A
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Abstract
The invention relates to a ground injection system for coal bed gas testing. An automatic recording unit is connected with an electronic flowmeter A, an electronic flowmeter B, an electronic pressure gauge A, an electronic pressure gauge B and an electronic liquid level meter, a control unit is connected with a high-pressure plunger pump and a metering pump and controls start and stop of the high-pressure plunger pump and the metering pump, one end of the high-pressure plunger pump is connected with a safety control valve, the other end of the high-pressure plunger pump is connected with the electronic flowmeter B for measuring instantaneous flow of the high-pressure plunger pump, one end of the metering pump is connected with the safety control valve, the other end of the metering pump is connected with the electronic flowmeter A for measuring instantaneous flow of the metering pump, one end of the safety control valve is connected with a water storage device, and the other end of the safety control valve is connected with the high-pressure plunger pump and the metering pump for adjusting output pressure to be controlled at a set value under rated pressure to enable the pressure to be maintained below the set value constantly. Consequently, personal factor errors are reduced, data reliability is improved, labor intensity is lowered, and the structure is integrated into skid mounting and is compact.
Description
Technical field:
The present invention relates to a kind of coal bed gas test ground injected system.
Background technology:
The ground injected system of using in the current coal bed gas test process is made up of water tank, high-pressure plunger pump and control corresponding valve, manifold.This system utilizes adjustable ball valve, injects flow by Artificial Control, and the value of flow is to get through level change and injection length calculating that content gauge in the water pot measures.Especially when testing injection/pressure fall; Rising with wellbore pressure; This system need be adjusted flow control valve to guarantee injecting the stable of flow by manual work according to the calculating of injecting flow at any time, and the data of each main node in the construction are all by manual record; The one, because the introducing of a large amount of human errors, causing injecting precision can't ensure; The 2nd, labour intensity is very big.
Summary of the invention
The purpose of this invention is to provide a kind of ground injected system that is used for the coal bed gas test, realize record and semiautomatic control automatically, avoid human error, and then test data is more reliably enrolled in guarantee.
Coal bed gas test of the present invention ground injected system is that a cover is by the integrated skid system of automatic record cell, electronic grout flow meter, control module, electron pressure table, electronic grout flow meter, high-pressure plunger pump, measuring pump, Safety control valve, electron pressure table, water storage device and electronic level meter.
Automatically record cell links to each other with electronic grout flow meter A, electronic grout flow meter B, electron pressure Table A, electron pressure table B and electronic level meter, in test process, writes down the data that each sensor obtains and is converted into the automatic record of engineering value;
Control module is connected with measuring pump with high-pressure plunger pump, and control high-pressure plunger pump and measuring pump start and stop, and the output flow of pump is regulated; Its panel is totally 4 buttons, respectively the startup of corresponding two pumps and stopping; 2 adjusting knobs are arranged, reach adjusting POF through adjusting to the pump motor frequency;
High-pressure plunger pump one end is connected with Safety control valve through manifold, and the other end is connected with electronic grout flow meter B through manifold, measures the pump instantaneous delivery through electronic grout flow meter B; High-pressure plunger pump maximum pump pressure 25MPa; Flow 0-50L/min is adjustable, flow accuracy: (16.7-50l/min)＜2%, (5-16.7l/min)＜5%, (0-5l/min)＜10%, and rated voltage 380V; Rated power 33KW, frequency range 0-50HZ;
Measuring pump one end is connected with Safety control valve through manifold, and the other end is connected with electronic grout flow meter A, through electronic grout flow meter A measuring pump instantaneous delivery; Measuring pump maximum pump pressure 10MPa; Flow 0-3.3L/min is adjustable, flow accuracy＜5%, rated voltage 380V; Rated power 10KW, frequency range 0-50HZ;
Safety control valve one end is connected with water storage device through manifold; The other end is connected with measuring pump with high-pressure plunger pump through manifold; Can output pressure be controlled at a setting value under the rated pressure through this valve regulation, when pressure surpasses setting value, inject water and be back to water storage device through this valve; Pressure remains below setting value, and pump is played a protective role;
Water storage device is shaped as cuboid, and volume is 0.42 cubic metre.
When needs carried out pressure test, measuring pump was mainly used in the testing injection/pressure fall that tiny flow quantity injects.High-pressure plunger pump is used for the testing injection/pressure fall of micro rupture experiment and original place stress test and special high-pressure well.Through the monitoring of measuring unit and the adjusting of control module by-pass cock, flow is adjusted to required beam amount.The limnograph unit controls is obtained the data of each sensor transmissions such as the flow, pressure of collecting part, after the analytical calculation, forms log file.Water storage device is the bogey that in well, injects water.
The effect of invention:
1) invention of this system makes in the coal bed gas test process, has reduced the human factor error, has improved the reliability of data, simultaneously, has improved operating efficiency, has reduced labour intensity.
2) use of measuring pump makes the testing injection/pressure fall flow control accuracy obtain increasing substantially in this system, and the more former pump injection system of new pump injection system flow error has improved about 25 percentage points at least.Greatly degree has ensured the quality of test data, and effectively arranging to adopt for coal bed gas provides reliable foundation.
3) design of automatic metering system will make work progress obtain very full and accurate record, for the explanation personnel provide site operation parameter accurately, for the later stage Data Processing provides another strong foundation.
4) an integrated skid, the compact conformation of turning to of hardware.
Description of drawings:
Fig. 1 coal bed gas test ground injected system.
Wherein:
1. automatic record cell 2. electronic grout flow meter A 3. control modules 4. electron pressure tables
5. electronic grout flow meter B 6. high-pressure plunger pumps 7. measuring pumps 8. Safety control valves
9. electron pressure table 10. water storage device 11. electronic level meters
The specific embodiment
Coal bed gas test of the present invention ground injected system is that a cover is by automatic record cell
1, the integrated skid system of electronic grout flow meter A2, control module 3, electron pressure Table A 4, electronic grout flow meter 5, high-pressure plunger pump 6, measuring pump 7, Safety control valve 8, electron pressure table B9, water storage device 10 and electronic level meter 11.
Automatically record cell links to each other with electronic grout flow meter A, electronic grout flow meter B, electron pressure Table A, electron pressure table B and electronic level meter, in test process, writes down the data that each sensor obtains and is converted into the automatic record of engineering value;
Control module is connected with measuring pump with high-pressure plunger pump, and control high-pressure plunger pump and measuring pump start and stop, and the output flow of pump is regulated; Its panel is totally 4 buttons, respectively the startup of corresponding two pumps and stopping; 2 adjusting knobs are arranged, reach adjusting POF through adjusting to the pump motor frequency;
High-pressure plunger pump one end is connected with Safety control valve through manifold, and the other end is connected with electronic grout flow meter B through manifold, measures the pump instantaneous delivery through electronic grout flow meter B; High-pressure plunger pump maximum pump pressure 25MPa; Flow 0-50L/min is adjustable, flow accuracy: (16.7-50l/min)＜2%, (5-16.7l/min)＜5%, (0-5l/min)＜10%, and rated voltage 380V; Rated power 33kW, frequency range 0-50HZ;
Measuring pump one end is connected with Safety control valve through manifold, and the other end is connected with electronic grout flow meter A, through electronic grout flow meter A measuring pump instantaneous delivery; Measuring pump maximum pump pressure 10MPa; Flow 0-3.3L/min is adjustable, flow accuracy＜5%, rated voltage 380V; Rated power 10kW, frequency range 0-50HZ;
Safety control valve one end is connected with water storage device through manifold; The other end is connected with measuring pump with high-pressure plunger pump through manifold; Adjusting through this valve can be controlled at a setting value under the rated pressure with output pressure, when pressure surpasses setting value, injects water and is back to water storage device through this valve; Pressure remains below setting value, and pump is played a protective role;
Water storage device is shaped as cuboid, and volume is 0.42 cubic metre.
Claims (1)
1. the ground injected system in the coal bed gas test process; Be one the cover by the integrated skid system of automatic record cell, electronic grout flow meter, control module, electron pressure table, electronic grout flow meter, high-pressure plunger pump, measuring pump, Safety control valve, electron pressure table, water storage device and electronic level meter, it is characterized in that:
Automatically record cell links to each other with electronic grout flow meter A, electronic grout flow meter B, electron pressure Table A, electron pressure table B and electronic level meter, in test process, writes down the data that each sensor obtains and is converted into the automatic record of engineering value;
Control module is connected with measuring pump with high-pressure plunger pump, and control high-pressure plunger pump and measuring pump start and stop, and the output flow of pump is regulated; Its panel is totally 4 buttons, respectively the startup of corresponding two pumps and stopping; 2 adjusting knobs are arranged, reach adjusting POF through adjusting to the pump motor frequency;
High-pressure plunger pump one end is connected with Safety control valve through manifold, and the other end is connected with electronic grout flow meter B through manifold, measures the pump instantaneous delivery through electronic grout flow meter B; High-pressure plunger pump maximum pump pressure 25MPa; Flow 0-50L/min is adjustable, flow accuracy: (16.7-50l/min)＜2%, (5-16.7l/min)＜5%, (0-5l/min)＜10%, and rated voltage 380V; Rated power 33kW, frequency range 0-50HZ;
Measuring pump one end is connected with Safety control valve through manifold, and the other end is connected with electronic grout flow meter A, through electronic grout flow meter A measuring pump instantaneous delivery; Measuring pump maximum pump pressure 10MPa; Flow 0-3.3L/min is adjustable, flow accuracy＜5%, rated voltage 380V; Rated power 10kW, frequency range 0-50HZ;
Safety control valve one end is connected with water storage device through manifold; The other end is connected with measuring pump with high-pressure plunger pump through manifold; Adjusting through this valve can be controlled at a setting value under the rated pressure with output pressure, when pressure surpasses setting value, injects water and is back to water storage device through this valve; Pressure remains below setting value, and pump is played a protective role;
Water storage device is shaped as cuboid, and volume is 0.42 cubic metre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101089485A CN102758606A (en) | 2011-04-28 | 2011-04-28 | Ground injection system for coal bed gas testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101089485A CN102758606A (en) | 2011-04-28 | 2011-04-28 | Ground injection system for coal bed gas testing |
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| Publication Number | Publication Date |
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| CN102758606A true CN102758606A (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101089485A Pending CN102758606A (en) | 2011-04-28 | 2011-04-28 | Ground injection system for coal bed gas testing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387067A (en) * | 2017-08-10 | 2017-11-24 | 西安石油大学 | Fine and close oil and gas reservoir pressure test process matching device and application method |
| CN109594983A (en) * | 2019-01-29 | 2019-04-09 | 山西省地质矿产研究院(山西省煤层气测试技术研究院) | Coal bed gas injection pressure drop well testing top-up injection and Original strata stress test monitoring system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030196804A1 (en) * | 2002-02-20 | 2003-10-23 | Riet Egbert Jan Van | Dynamic annular pressure control apparatus and method |
| US20050269134A1 (en) * | 2004-06-04 | 2005-12-08 | Strazhgorodskiy Semen I | Underbalanced drilling method and apparatus |
| RU2312208C1 (en) * | 2006-05-24 | 2007-12-10 | Ренат Саниахметович Хазиахметов | Plant for metered liquid chemical reagent injection |
| CN201083121Y (en) * | 2007-10-22 | 2008-07-09 | 大庆摩恩达工程有限公司 | Water injection device |
| CN201225143Y (en) * | 2007-12-31 | 2009-04-22 | 东营市石大综合技术有限责任公司 | On-line injection cut and drive-adjustable apparatus |
-
2011
- 2011-04-28 CN CN2011101089485A patent/CN102758606A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030196804A1 (en) * | 2002-02-20 | 2003-10-23 | Riet Egbert Jan Van | Dynamic annular pressure control apparatus and method |
| US20050269134A1 (en) * | 2004-06-04 | 2005-12-08 | Strazhgorodskiy Semen I | Underbalanced drilling method and apparatus |
| RU2312208C1 (en) * | 2006-05-24 | 2007-12-10 | Ренат Саниахметович Хазиахметов | Plant for metered liquid chemical reagent injection |
| CN201083121Y (en) * | 2007-10-22 | 2008-07-09 | 大庆摩恩达工程有限公司 | Water injection device |
| CN201225143Y (en) * | 2007-12-31 | 2009-04-22 | 东营市石大综合技术有限责任公司 | On-line injection cut and drive-adjustable apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387067A (en) * | 2017-08-10 | 2017-11-24 | 西安石油大学 | Fine and close oil and gas reservoir pressure test process matching device and application method |
| CN109594983A (en) * | 2019-01-29 | 2019-04-09 | 山西省地质矿产研究院(山西省煤层气测试技术研究院) | Coal bed gas injection pressure drop well testing top-up injection and Original strata stress test monitoring system |
| CN109594983B (en) * | 2019-01-29 | 2022-04-22 | 山西省地质矿产研究院(山西省煤层气测试技术研究院) | Constant-current injection and in-situ stress test monitoring system for coal bed gas injection pressure drop well testing |
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Application publication date: 20121031 |