CN106761574A - Multiple superposed gas system peupendicular hole exploitation pipe - Google Patents
Multiple superposed gas system peupendicular hole exploitation pipe Download PDFInfo
- Publication number
- CN106761574A CN106761574A CN201611123726.XA CN201611123726A CN106761574A CN 106761574 A CN106761574 A CN 106761574A CN 201611123726 A CN201611123726 A CN 201611123726A CN 106761574 A CN106761574 A CN 106761574A
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- China
- Prior art keywords
- baffle
- inner tube
- outer tube
- rear end
- extraction area
- 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.)
- Pending
Links
- 238000000605 extraction Methods 0.000 claims abstract description 55
- 210000004907 gland Anatomy 0.000 claims abstract description 16
- 210000002445 nipple Anatomy 0.000 claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000010168 coupling process Methods 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 17
- 230000000994 depressogenic effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000003245 coal Substances 0.000 description 23
- 238000005516 engineering process Methods 0.000 description 6
- 238000011160 research Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/006—Production of coal-bed methane
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a kind of multiple superposed gas system peupendicular hole exploitation pipe, outer tube including front end closing, it is provided with least two extraction areas vertically on outer tube, outer drainage holes are offered in each extraction area, dividing plate is provided between the adjacent Liang Ge extractions area of outer tube, the coupling of tubulose is socketed with the rear end screw thread of outer tube, the gland of tubulose is also plugged with the rear end of outer tube, nipple is plugged with gland, offered in nipple and outer tube extraction area quantity identical axially extending bore, pipe joint is respectively connected with the rear end of each through hole, the front end of each through hole has been fixedly connected with inner tube, inner tube is corresponded with extraction area, the interior drainage holes in corresponding extraction area are provided with each inner tube.Said structure provides a kind of use, efficient multiple superposed gas system peupendicular hole exploitation pipe, be skillfully constructed, produce easy, low production cost the features such as.
Description
Technical field
The invention belongs to Coal-seam Gas Recovery Technologies field, specifically, more particularly to a kind of multiple superposed gas system hangs down
Straight well exploitation pipe.
Background technology
At present, as sustained economic development is to the worsening shortages of increasingly increase and the conventional gas and oil resource of energy demand, generation
The new energy of exploitation is all actively being found by Jie Ge states, to make up the breach of conventional gas and oil resource.Coal bed gas (being commonly called as gas) is system
About one of principal element of coal mine downhole safety production, but be also a kind of energy of high-quality, can be used to generating electricity, warms oneself, chemical industry etc.
Various fields.Therefore, coal bed gas resource is reasonably developed, the generation of accident of mine disaster can be not only greatly decreased, and contribute to
Reduce dependence of the national economy to conventional gas and oil resource.
Chinese Regional is vast, and coal bed gas resource enriches, and total resources is 30 × 1012~35 × 1012m3, wherein buried depth is
Coal bed gas total resources is about 25 × 10 in the range of 300~1500m12m3.As traditional coal seam gas exploration exploitation hot zones (ooze
The piece of water, Ordos Basin etc.) research it is gradually perfect, other area, types bed gas reservoir turn into coal bed gas industry it is new
Research, exploration, exploitation growth point.The coal bed gas resource exploration of Eastern Yunnan Province And Guizhou Province, china area be national " 13 " planning content it
One, the area has the geology characteristic of " is weak, more than two, three height, four big "：That is Lungtan Formation watery is weak, control gas structural type it is many and
The coal seam number of plies is more, and coal-bed gas content is high, resource abundance is high, reservoir pressure and crustal stress are high, and Coal bed gas project is big, coal rank
Change is big, coal seam permeability changes greatly with geological conditions vertical variations greatly.For single coal bed, the coal under the conditions of multiple seam
Layer gas storage has its particularity, and forefathers are based on receiving coalfield Shui Gong rivers to oblique analysis and research to knitting, tentatively propose and demonstrate
The academic viewpoint of " multiple superposed independently contains coalbed methane system ".
Due to the above-mentioned geological conditions feature of southwest, the abundant coal bed gas resource basis in the area is on the one hand constituted,
Another aspect northern China or even external effective coal bed gas routine development technique cannot be applicable in the area.At present on coal
The research of layer gas exploitation focuses mostly in single coal bed, is badly in need of new theory, new technology, new technology to instruct southwest multiple superposed
Gas system peupendicular hole is exploited.Therefore, for this particularity of area's geological conditions, the applicable production practice of research and development
And technology, as the inevitable choice for advancing area's coal bed gas scale exploitation.So, carry out multiple superposed gas system peupendicular hole
Exploitation simulated test, studies reservoir properties dynamic evolution rule and interlayer interference mechanism in its recovery process, to coordinating multi-laminate
Putting the regional each system of development carries out orderly, progressive exploitation, it is to avoid interfering between system in recovery process, realizes that coal bed gas is provided
The exploitation of source high-efficiency and economic, with highly important theoretical research value and actual directive significance, this be accomplished by providing it is a kind of newly
Multiple superposed gas system peupendicular hole exploitation pipe.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of easy to use, efficient multiple superposed gas system to hang down
Straight well exploitation pipe.
Technical scheme is as follows：A kind of multiple superposed gas system peupendicular hole exploitation pipe, including front end closing
Outer tube, is provided with least two extraction areas vertically on the outer tube, and outer drainage holes are offered in each extraction area,
Dividing plate is provided between the adjacent Liang Ge extractions area of the outer tube, adjacent extraction area is sealed cut-off by the dividing plate；Described
The rear end screw thread of outer tube is socketed with the coupling of tubulose, and the rear end of the coupling is circumferentially extended and forms circular first gear
Plate, the gland of tubulose is also plugged with the rear end of the outer tube, and the rear end of the gland is circumferentially extended and forms circular second
Baffle plate, the second baffle covers first baffle, and nipple, the rear end circumference of the nipple are plugged with the gland
Extend and form circular third baffle, the third baffle is fixed on the second baffle of gland, is opened in the nipple
Be provided with outer tube extraction area quantity identical axially extending bore, be respectively connected with pipe joint, Mei Yisuo in the rear end of each through hole
The front end for stating through hole has been fixedly connected with inner tube, and said inner tube is corresponded with extraction area, and each inner tube stretch into it is respective
Extraction area, is provided with the interior drainage holes in corresponding extraction area in each inner tube.
Using said structure, at least two extraction areas are set on outer tube, outer drainage holes are opened up in extraction area, in outer tube
It is interior that the dividing plate that sealing separates each extraction area is set, arrangement and the one-to-one inner tube in extraction area in outer tube, in inner tube correspondence
The region in respective extraction area opens up interior drainage holes, when being simulated experiment, it is only necessary to which outer tube is stretched into multiple superposed gas system
It is interior, make each extraction area each coal seam of correspondence of outer tube, then inner tube is loaded in outer tube, lead to the outer drainage holes in each extraction area
The interior drainage holes crossed in inner tube are connected with the pipe joint of nipple through hole back-end, you can by each inner tube in different coal
Gas carries out extraction or injection, thus for multiple superposed gas system peupendicular hole provide it is a kind of it is easy to use, efficiently open
Adopt pipe.Also, different extraction areas seals independence each other, it is also independent between different inner tubes, it is to avoid difference is taken out
Interfering between exploiting field, in the influence in other coal seams in studying single coal bed to multiple superposed gas system, research knot
Fruit is more accurate, operation more facilitates.Moreover, the rear end of outer tube connects pipe joint and interior by coupling, gland and nipple
Pipe, effectively ensures that separate between each inner tube, it is adaptable to which separate zone production, simple structure, installation operation are convenient.
Depressed part is provided with towards the side of first baffle in the second baffle, the first baffle is located at the depressed part
It is interior, sealing ring is lined between the first baffle and second baffle, also it is lined between the second baffle and third baffle
Sealing ring.Sealing ring is so set between first baffle, second baffle and third baffle, the rear end of outer tube is carried out effectively close
Envelope, in simulated test it is advantageously ensured that test effect accurately and reliably.
Said inner tube is made up of the body that front end is closed, and tube wall makes body in front fine and rear thick stepped
Outer wall forms the step surface corresponding with dividing plate, and the step surface gear supplies interior in the rear end of correspondence dividing plate in each dividing plate
The sealing ring coordinated with outer wall of inner tube sealing is embedded with the via that pipe wears.The stair-stepping inner tube of outer wall is so set, is made interior
The installation of pipe is more quick, and sealing gasket can be set on step surface, is conducive to further ensuring that the mutual close of each extraction area
Envelope.
Preferably, the extraction area on the outer tube is evenly equipped with four vertically, the through hole week opened up on the nipple
To being evenly equipped with four, said inner tube also has four, and four inner tubes correspond to four extraction areas respectively.
Outer drainage holes in each extraction area of outer tube are circumferentially evenly equipped with multiple, the interior drainage holes institute in said inner tube
In region just to the outer drainage holes region.
Beneficial effect：The present invention opens up outer drainage holes by setting at least two extraction areas on outer tube in extraction area,
The dividing plate that sealing separates each extraction area is set in outer tube, arrangement and the one-to-one inner tube in extraction area in outer tube, including
The region in the respective extraction area of pipe correspondence opens up interior drainage holes, so as to provide a kind of use, efficient multiple superposed gassiness
Systematic vertical well exploitation pipe, be skillfully constructed, produce easily, low production cost the features such as.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the I portions enlarged drawing of Fig. 1.
Fig. 3 is the J portions enlarged drawing of Fig. 1.
Marked in figure as follows：It is outer tube 1, dividing plate 2, inner tube 3, coupling 4, first baffle 4a, gland 5, second baffle 5a, interior
Joint 6, third baffle 6a, through hole 6b, pipe joint 7.
Specific embodiment
Embodiments of the invention are described below in detail, described embodiment example is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
Figure description embodiment is exemplary, it is intended to explains the present invention, and is not considered as limiting the invention.
Below in conjunction with the accompanying drawings, it is further described by specific embodiment of the invention, makes technology of the invention
Scheme and its advantage are clearer, clear and definite.
As shown in Figure 1, Figure 2 and Figure 3, outer tube 1 of the present invention including front end closing, is provided with vertically on the outer tube 1
At least two extraction areas, outer drainage holes are offered in each extraction area.Extraction on the present embodiment preferably outer tube 1
Area is evenly equipped with four vertically, and the outer drainage holes in each extraction area of the outer tube 1 are circumferentially evenly equipped with multiple.In the outer tube
Dividing plate 2 is provided between 1 adjacent Liang Ge extractions area, adjacent extraction area is sealed cut-off by the dividing plate 2.For the ease of fixation
Dividing plate 2, the outer tube 1 can be formed by connecting by multiple pipe fittings, and each pipe fitting is to constitute an extraction area, and the welding of dividing plate 2 is solid
It is scheduled on the corresponding termination of pipe fitting；Certainly, outer tube 1 can also be an integral tube, and dividing plate 2 is fixed outside using other modes sealing
In pipe 1.The coupling 4 of tubulose is socketed with the rear end screw thread of the outer tube 1, the rear end of the coupling 4 is circumferentially extended and formed
Circular first baffle 4a.The gland 5 of tubulose is also plugged with the rear end of the outer tube 1, the rear end of the gland 5 is circumferentially prolonged
Spread covers first baffle 4a into circular second baffle 5a, the second baffle 5a.Also, in the second baffle 5a
Depressed part is provided with towards the side of first baffle 4a, the first baffle 4a is located in the depressed part, in the first baffle 4a
Sealing ring is lined between second baffle 5a.Nipple 6 is plugged with the gland 5, the rear end of the nipple 6 is circumferentially prolonged
Into circular third baffle 6a, the third baffle 6a is fixed on the second baffle 5a of gland 5 spread, in the second gear
Sealing ring is also lined between plate 5a and third baffle 6a.
As shown in Figure 1, Figure 2 and Figure 3, offered in the nipple 6 axially logical with the extraction area quantity identical of outer tube 1
Hole 6b, the through hole 6b opened up on nipple 6 described in the present embodiment is circumferentially evenly equipped with four.In the rear end of each through hole 6b
Pipe joint 7 is respectively connected with, the front end of each through hole 6b has been fixedly connected with inner tube 3, and said inner tube 3 there are four, this four
Inner tube 3 corresponds to four extraction areas respectively.The length of all of inner tube 3 is inconsistent, and said inner tube 3 is corresponded with extraction area, and
Each inner tube 3 stretches into respective extraction area, and the interior drainage holes in corresponding extraction area are provided with each inner tube 3, described interior
Interior drainage holes region on pipe 3 is just to the outer drainage holes region.The body structure that said inner tube 3 is closed by front end
Into, and the present embodiment preferably needs to wear the tube wall of the inner tube 3 of dividing plate 2 in front fine and rear thick stepped, makes body
Outer wall forms the step surface corresponding with dividing plate 2, and the step surface gear is in the rear end of correspondence dividing plate 2.Also, it is each it is described every
The sealing ring coordinated with the sealing of the outer wall of inner tube 3 is embedded with the via that plate 2 wears for inner tube 3.
Claims (5)
1. a kind of outer tube of multiple superposed gas system peupendicular hole exploitation pipe, including front end closing, it is characterised in that：Described outer
At least two extraction areas are provided with pipe vertically, outer drainage holes are offered in each extraction area, it is adjacent in the outer tube
Liang Ge extractions area between be provided with dividing plate, adjacent extraction area is sealed cut-off by the dividing plate；In the rear end spiral shell of the outer tube
Line is socketed with the coupling of tubulose, and the rear end of the coupling is circumferentially extended and forms circular first baffle, in the outer tube
Rear end be also plugged with the gland of tubulose, the rear end of the gland is circumferentially extended and forms circular second baffle, described second
Baffle plate covers first baffle, and nipple is plugged with the gland, and the rear end of the nipple is circumferentially extended and forms annulus
The third baffle of shape, the third baffle is fixed on the second baffle of gland, is offered in the nipple and is taken out with outer tube
Exploiting field quantity identical axially extending bore, pipe joint, the front end of each through hole are respectively connected with the rear end of each through hole
Inner tube is fixedly connected with, said inner tube is corresponded with extraction area, and each inner tube stretches into respective extraction area, each
The interior drainage holes in corresponding extraction area are provided with inner tube.
2. multiple superposed gas system peupendicular hole exploitation pipe according to claim 1, it is characterised in that：In the second gear
Plate is provided with depressed part towards the side of first baffle, and the first baffle is located in the depressed part, in the first baffle and the
Sealing ring is lined between two baffle plates, sealing ring is also lined between the second baffle and third baffle.
3. multiple superposed gas system peupendicular hole exploitation pipe according to claim 1 and 2, it is characterised in that：Said inner tube
The body closed by front end is constituted, and tube wall makes the outer wall of body be formed and dividing plate phase in front fine and rear thick stepped
Corresponding step surface, the step surface gear is embedded in each dividing plate in the rear end of correspondence dividing plate for the via that inner tube wears
Equipped with the sealing ring coordinated with outer wall of inner tube sealing.
4. multiple superposed gas system peupendicular hole exploitation pipe according to claim 3, it is characterised in that：On the outer tube
Extraction area is evenly equipped with four vertically, and the through hole opened up on the nipple is circumferentially evenly equipped with four, and said inner tube also has four,
Four inner tubes correspond to four extraction areas respectively.
5. multiple superposed gas system peupendicular hole exploitation pipe according to claim 4, it is characterised in that：The outer tube is each
Outer drainage holes in extraction area are circumferentially evenly equipped with multiple, and the interior drainage holes region in said inner tube is just to the outer extraction
Hole region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611123726.XA CN106761574A (en) | 2016-12-08 | 2016-12-08 | Multiple superposed gas system peupendicular hole exploitation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611123726.XA CN106761574A (en) | 2016-12-08 | 2016-12-08 | Multiple superposed gas system peupendicular hole exploitation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106761574A true CN106761574A (en) | 2017-05-31 |
Family
ID=58881687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611123726.XA Pending CN106761574A (en) | 2016-12-08 | 2016-12-08 | Multiple superposed gas system peupendicular hole exploitation pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761574A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488256A (en) * | 2018-12-03 | 2019-03-19 | 重庆大学 | A kind of test mining pipe for multiple seam ground straight well coal-bed gas exploitation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570707A (en) * | 1984-03-09 | 1986-02-18 | Otis Engineering Corporation | Releasable latch for downhole well tools |
| US4972906A (en) * | 1989-09-07 | 1990-11-27 | Conoco Inc. | Method for selective plugging of a zone in a well |
| CN103089254A (en) * | 2013-01-23 | 2013-05-08 | 重庆大学 | Physical simulation test tube of multi-field coupling coalbed methane exploitation |
| CN202990990U (en) * | 2012-12-21 | 2013-06-12 | 江苏金石富源机械有限公司 | Integral combined valve type dual-pipe oil and gas recovery wellhead device |
| CN203835321U (en) * | 2014-05-19 | 2014-09-17 | 江苏金石科技有限公司 | Combined-type double-oil-tube wellhead connection device |
| CN104295292A (en) * | 2014-08-14 | 2015-01-21 | 中国矿业大学 | Method for designing exploiting wells of multi-layer stacking coal bed gas system |
-
2016
- 2016-12-08 CN CN201611123726.XA patent/CN106761574A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570707A (en) * | 1984-03-09 | 1986-02-18 | Otis Engineering Corporation | Releasable latch for downhole well tools |
| US4972906A (en) * | 1989-09-07 | 1990-11-27 | Conoco Inc. | Method for selective plugging of a zone in a well |
| CN202990990U (en) * | 2012-12-21 | 2013-06-12 | 江苏金石富源机械有限公司 | Integral combined valve type dual-pipe oil and gas recovery wellhead device |
| CN103089254A (en) * | 2013-01-23 | 2013-05-08 | 重庆大学 | Physical simulation test tube of multi-field coupling coalbed methane exploitation |
| CN203835321U (en) * | 2014-05-19 | 2014-09-17 | 江苏金石科技有限公司 | Combined-type double-oil-tube wellhead connection device |
| CN104295292A (en) * | 2014-08-14 | 2015-01-21 | 中国矿业大学 | Method for designing exploiting wells of multi-layer stacking coal bed gas system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488256A (en) * | 2018-12-03 | 2019-03-19 | 重庆大学 | A kind of test mining pipe for multiple seam ground straight well coal-bed gas exploitation |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |