CN103643944A - Pressure transferring device for testing coal seam capillary tube - Google Patents
Pressure transferring device for testing coal seam capillary tube Download PDFInfo
- Publication number
- CN103643944A CN103643944A CN201310589477.3A CN201310589477A CN103643944A CN 103643944 A CN103643944 A CN 103643944A CN 201310589477 A CN201310589477 A CN 201310589477A CN 103643944 A CN103643944 A CN 103643944A
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- China
- Prior art keywords
- coal seam
- capillary tube
- box cupling
- pressure
- coupling
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- 239000003245 coal Substances 0.000 title claims abstract description 35
- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 230000007704 transition Effects 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000000605 extraction Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract 13
- 238000010168 coupling process Methods 0.000 abstract 13
- 238000005859 coupling reaction Methods 0.000 abstract 13
- 238000010926 purge Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The invention discloses a pressure transferring device for testing a coal seam capillary tube. The pressure transferring device comprises an intermediate transition tube, an upper coupling and a lower coupling, wherein a threaded hole connected with an oil tube used for extracting water in a coal seam is arranged in the upper end of the upper coupling, a threaded hole connected with the intermediate transition tube is arranged in the lower end of the upper coupling, and a capillary tube port used for being connected with the capillary tube is further arranged on the side wall of the upper coupling; a threaded hole connected with the intermediate transition tube is arranged in the upper end of the lower coupling, and a one-way valve connected with the threaded hole is installed at the lower end of the lower coupling. Due to the facts that the upper coupling connected with the oil tube used for extracting the water in the coal seam is arranged, the lower coupling provided with the one-way valve is arranged, and the intermediate transition tube is arranged between the upper coupling and the lower coupling in a sleeved mode, the capillary tube is connected with the upper coupling through the capillary tube port arranged in the upper coupling. Therefore, the pressure transferring device can be installed at a position of a coal seam to be tested below a coal seam drainage tubing pump or a position to be tested above the coal seam, and the position is used when pressure testing is carried out. The pressure transferring device is not only simple in structure but also convenient to use.
Description
Technical field
The present invention relates to a kind of coal seam capillary tube test pressure transfering appts.
Background technology
Capillary pressure test is novel test technology cheaply in the daily production of coal bed gas, and he is higher than at present conventional echometer method of testing precision, lower than the cost of electronic pressure gauge, by its effect of on-the-spot practical application, can meet engineering actual demand completely.And because down-hole is without any electronic equipment, so it is extremely easy to use.
Coal seam capillary tube test is one of coal seam capillary tube test major critical component with pressure transfering appts, but because capillary tube test in previously used coal seam is the outer annular space capillary pressure-transmission barrel of pipe with pressure transfering appts, the use of this annular space capillary pressure-transmission barrel has reduced the annular space space between oil pipe and sleeve pipe in pit shaft greatly, bring many difficulties even can not test to the liquid level test of production logging and the piezometric ring hollow testing of other modes, therefore proposed this new coal seam capillary tube test pressure transfering appts.
Summary of the invention
The problem existing for prior art, the object of the present invention is to provide a kind of capillary tube test pressure transfering appts in coal seam easy to use and simple in structure.
A kind of coal seam of the present invention capillary tube test comprises with pressure transfering appts:
Middle transition pipe, for the cushion space as pressure-transmission tube, avoids capillary tube water inlet to affect test result, and its length can be optimized according to the degree of depth of coal bed gas well;
Upper box cupling, upper end is provided with the screwed hole that is connected with oil pipe for extraction coal seam water, and lower end is provided with the screwed hole being connected with described middle transition pipe, and the sidewall of box cupling is also provided with the capillary interface for being connected with capillary tube on described;
Lower box cupling, upper end is provided with the screwed hole being connected with described middle transition pipe, and lower end is provided with the one way valve being connected with this screwed hole, and described one way valve is used for being lowered to the anti-sealing of process and enters middle transition pipe, and then enters capillary tube and affect certainty of measurement.
Preferably, in the lower surface of described lower box cupling, be also provided with the screen casing for filtering.
The present invention is by arranging the upper box cupling being connected with oil pipe for extraction coal seam water, with the lower box cupling that one way valve is installed, sheathed middle transition pipe between upper and lower box cupling, capillary tube is connected with upper box cupling by the capillary interface being arranged on upper box cupling, so just the present invention can be arranged on to the above position that requires test in position, coal seam or coal seam that will test under the tubing pump of coal seam draining, and then use while carrying out pressure test in this position, not only simple in structure but also easy to use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
As shown in Figure 1, a kind of coal seam capillary tube test pressure transfering appts of the present invention, comprising: middle transition pipe 1, upper box cupling 2 and lower box cupling 3.
The caliber of middle transition pipe 1 is roughly with suitable for the oil pipe of extraction coal seam water, can adopt the oil pipe of different length or tubing nipple or multiple-tubing string to substitute.The effect of middle transition pipe 1 is the cushion space as water, when carrying out pressure test, exists the water in middle transition pipe 1 to pass through to purge outside discharge pipe.
The upper end of upper box cupling 2 is provided with the screwed hole 4 that is connected with oil pipe for extraction coal seam water, and lower end is provided with the screwed hole 5 being connected with middle transition pipe 1, at the sidewall of upper box cupling 2, is also provided with the capillary interface 6 for being connected with capillary tube.Capillary interface 6 is conducted by path 10 and the screwed hole 5 being opened on upper box cupling 2.
The upper end of lower box cupling 3 is provided with the screwed hole 7 being connected with middle transition pipe 1, and lower end is provided with the one way valve 8 being connected with this screwed hole 7.
In addition, in the lower surface of lower box cupling 3, be also provided with the screen casing 9 for filtering.
The present invention in use, by upper box cupling 2, receive the oil pipe for extraction coal seam water, and be positioned at the position of tubing pump below, then middle transition pipe 1 is connected on box cupling 2 times, connect again lower box cupling 3, the capillary tube of capillary pressure force test system is installed on capillary interface 6, and along with oil pipe is transferred and the position, coal seam that will test or the position that more than coal seam requires test.While instantly arriving precalculated position, by external purging system, from capillary tube, be blown into nitrogen, the air of capillary tube, middle transition pipe 1 is all blown by one way valve 8.Shut-down purge system, is conducted pressure testing system and capillary tube.Now, because the pressure at one way valve 8 places of pressure-transmission tube has the pressure of cover annular space identical with outside, by capillary tube, just this pressure can be passed back to ground pressure testing arrangement like this, thereby just can measure easily the pressure of this position by pressure testing system.
The present invention is by arranging the upper box cupling 2 being connected with oil pipe for extraction coal seam water, with the lower box cupling 3 that one way valve 8 is installed, sheathed middle transition pipe 1 between upper and lower box cupling 2,3, capillary tube is connected with upper box cupling 2 by the capillary interface 6 being arranged on upper box cupling 2, so just the present invention can be arranged under the tubing pump of coal seam draining, transfer to the above position that requires test in position or coal seam in tested coal seam, and then use while carrying out pressure test in this position, this device is not only simple in structure but also easy to use.
Claims (2)
1. a coal seam capillary tube test pressure transfering appts, is characterized in that, comprising:
Middle transition pipe, for the cushion space as pressure-transmission tube, avoids capillary tube water inlet to affect test result, and its length can be optimized according to the degree of depth of coal bed gas well;
Upper box cupling, upper end is provided with the screwed hole that is connected with oil pipe for extraction coal seam water, and lower end is provided with the screwed hole being connected with described middle transition pipe, and the sidewall of box cupling is also provided with the capillary interface for being connected with capillary tube on described;
Lower box cupling, upper end is provided with the screwed hole being connected with described middle transition pipe, and lower end is provided with the one way valve being connected with this screwed hole, and described one way valve is used for being lowered to the anti-sealing of process and enters middle transition pipe, and then enters capillary tube and affect certainty of measurement.
2. device as claimed in claim 1, is characterized in that, in the lower surface of described lower box cupling, is also provided with the screen casing for filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589477.3A CN103643944B (en) | 2013-11-20 | 2013-11-20 | A kind of coal seam capillary tube test pressure transfering appts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589477.3A CN103643944B (en) | 2013-11-20 | 2013-11-20 | A kind of coal seam capillary tube test pressure transfering appts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103643944A true CN103643944A (en) | 2014-03-19 |
| CN103643944B CN103643944B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310589477.3A Active CN103643944B (en) | 2013-11-20 | 2013-11-20 | A kind of coal seam capillary tube test pressure transfering appts |
Country Status (1)
| Country | Link |
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Citations (9)
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|---|---|---|---|---|
| US5226485A (en) * | 1991-05-10 | 1993-07-13 | Gas Research Institute | Pass-through zone isolation packer and process for isolating zones in a multiple-zone well |
| CN1352383A (en) * | 2001-12-14 | 2002-06-05 | 中国石化胜利油田有限公司采油工艺研究院 | Air sac type well pressure measuring pressure transmission tube |
| CN2539163Y (en) * | 2002-04-15 | 2003-03-05 | 中国石化胜利油田有限公司采油工艺研究院 | Pressure testing pressure transmission cylinder for gas well |
| CN2592868Y (en) * | 2002-12-20 | 2003-12-17 | 中国石化胜利油田有限公司采油工艺研究院 | Pressure transmitting cylinder of pressure test survey for oil-water well |
| CN2709638Y (en) * | 2004-07-02 | 2005-07-13 | 中国石化胜利油田有限公司采油工艺研究院 | Transmission cylinder for testing pressure of capillary tube |
| CN2851571Y (en) * | 2005-09-16 | 2006-12-27 | 中国石化胜利油田有限公司采油工艺研究院 | Capillary pressure-transmission barrel |
| CN101581217A (en) * | 2008-05-16 | 2009-11-18 | 中国科学院力学研究所 | Device and method for coal bed gas pressure/content measurement while drilling |
| CN201802393U (en) * | 2010-09-15 | 2011-04-20 | 中国石油天然气股份有限公司 | Directional automatic opening capillary pressure testing device |
| CN202152678U (en) * | 2011-08-30 | 2012-02-29 | 靳涛 | Novel capillary pipe pressure transmitting cylinder device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU866112A1 (en) * | 1978-07-18 | 1981-09-23 | Полтавское отделение Украинского научно-исследовательского геологоразведочного института | Valve for pressure-testing a drill string in well |
-
2013
- 2013-11-20 CN CN201310589477.3A patent/CN103643944B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5226485A (en) * | 1991-05-10 | 1993-07-13 | Gas Research Institute | Pass-through zone isolation packer and process for isolating zones in a multiple-zone well |
| CN1352383A (en) * | 2001-12-14 | 2002-06-05 | 中国石化胜利油田有限公司采油工艺研究院 | Air sac type well pressure measuring pressure transmission tube |
| CN2539163Y (en) * | 2002-04-15 | 2003-03-05 | 中国石化胜利油田有限公司采油工艺研究院 | Pressure testing pressure transmission cylinder for gas well |
| CN2592868Y (en) * | 2002-12-20 | 2003-12-17 | 中国石化胜利油田有限公司采油工艺研究院 | Pressure transmitting cylinder of pressure test survey for oil-water well |
| CN2709638Y (en) * | 2004-07-02 | 2005-07-13 | 中国石化胜利油田有限公司采油工艺研究院 | Transmission cylinder for testing pressure of capillary tube |
| CN2851571Y (en) * | 2005-09-16 | 2006-12-27 | 中国石化胜利油田有限公司采油工艺研究院 | Capillary pressure-transmission barrel |
| CN101581217A (en) * | 2008-05-16 | 2009-11-18 | 中国科学院力学研究所 | Device and method for coal bed gas pressure/content measurement while drilling |
| CN201802393U (en) * | 2010-09-15 | 2011-04-20 | 中国石油天然气股份有限公司 | Directional automatic opening capillary pressure testing device |
| CN202152678U (en) * | 2011-08-30 | 2012-02-29 | 靳涛 | Novel capillary pipe pressure transmitting cylinder device |
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| CN103643944B (en) | 2016-08-10 |
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Effective date of registration: 20231120 Address after: 101400 room 208, second floor, building 13, yard 53, Yanqi street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: Beijing Kelisen Technology Co.,Ltd. Address before: 100190, No. 15 West Fourth Ring Road, Beijing, Haidian District Patentee before: INSTITUTE OF MECHANICS, CHINESE ACADEMY OF SCIENCES |