CN106771064A - Multiple superposed gas system peupendicular hole exploits simulated test facility - Google Patents
Multiple superposed gas system peupendicular hole exploits simulated test facility Download PDFInfo
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Abstract
The invention discloses a kind of multiple superposed gas system peupendicular hole exploitation simulated test facility, including casing and case lid, drainage tube, the other end are fitted with one end of casing be fitted with first level pressure head, at least two second horizontal pressure heads are inserted with the side of casing, vertical pressure head one-to-one with the second horizontal pressure head is inserted with case lid, each pressing plate is fixed with the inner of each pressure head, bottom is provided with and is equipped with gas channel with the one-to-one air permeable plate of vertical pressure head, each air permeable plate lower section in casing；Drainage tube includes the outer tube being fixed on casing and the inner tube being inserted in outer tube, it is provided with outer tube and the one-to-one extraction area of air permeable plate, outer drainage holes are provided with each extraction area, there is dividing plate between two neighboring extraction area, inner tube is corresponded with extraction area, the inner of inner tube is provided with the interior drainage holes in correspondence extraction area, so as to provide a kind of multiple superposed gas system peupendicular hole exploitation simulated test facility easy to use, efficient.
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 exploits simulated test facility.
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 300
Coal bed gas total resources is about 25 × 10 in the range of~1500m12m3.With traditional coal seam gas exploration exploitation hot zones (Qinshui
Basin, 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 is one of content of national " 13 " planning,
The area has the geology characteristic of " is weak, more than two, three height, four big "：That is Lungtan Formation watery is weak, controls gas structural type more and coal seam
The 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
Greatly, coal seam permeability changes greatly with geological conditions vertical variations greatly.For single coal bed, the coal bed gas under the conditions of multiple seam
Storage has its particularity, and forefathers are based on receiving coalfield Shui Gong rivers to oblique analysis and research to knitting, and tentatively propose and demonstrate " multilayer
It is stacked independent to contain coalbed methane system " academic viewpoint.
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
Source high-efficiency and economic exploitation, with highly important theoretical research value and actual directive significance.
And traditional coal is designed with gas pumping simulated test case and drainage tube for individual layer gas system, can not mould
Intend multiple superposed gas system, the layering extraction of multiple superposed gas system peupendicular hole can not be realized.Application No.
The patent of invention of " 201310025114.7 " provides a kind of " coal bed gas extraction test method during multiple seam unitized production ",
A kind of chamber for multiple seam unitized production simulated test and drainage tube are described in the application documents of the patent simultaneously.
Multiple horizontal pressure heads and vertical pressure head are wherein provided with chamber along its length, drainage tube uses the structure of outer tube and inner tube,
Wherein inner tube is formed by multistage docking.Using this chamber and drainage tube, when extraction is carried out to multiple seam, it is impossible to which observation is not
With the respective gas flow in coal seam, it is unfavorable for studying influencing each other between different coal, also, individual layer cannot be carried out and open successively
Adopt or progressive Mining Test.
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 exploits simulated test facility.
Technical scheme is as follows：A kind of multiple superposed gas system peupendicular hole exploits simulated test facility, including
Casing and case lid, drainage tube is fitted with the casing wherein one end along its length, and the drainage tube includes being fixed on case
Outer tube and the inner tube being inserted into outer tube on body, first level pressure is fitted with the casing other end along its length
Head, the inner of the first level pressure head is fixed with the first vertical pressing plate in casing, in the casing along width side
To side be fitted with least two second horizontal pressure heads, the second horizontal pressure head is evenly arranged along the length direction of casing,
The second horizontal pressure head is mutually perpendicular to the center line of first level pressure head, in the inner of each second horizontal pressure head
The second vertical pressing plate is fixed with, vertical pressure head one-to-one with the second horizontal pressure head is fitted with the case lid, every
The inner of vertical pressure head is respectively and fixedly provided with the 3rd pressing plate of the level in casing described in one, in the casing bottom be provided with
The one-to-one air permeable plate of vertical pressure head, is equipped with gas channel, the one of the gas channel below each air permeable plate
End runs through cabinet exterior and is fixedly connected with pipe joint by air permeable plate and cabinets cavity insertion, the other end of gas channel；
The outer tube be provided with the one-to-one extraction area of air permeable plate, offer outer drainage holes in each extraction area of outer tube,
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；It is described
The quantity of inner tube is corresponded with the quantity in extraction area, and the inner of inner tube is stretched into correspondence extraction area, and opens up on inner pipe
There are the interior drainage holes in correspondence extraction area.
Using said structure, the one-to-one second horizontal pressure head, vertical pressure head, air permeable plate and air-flow are set in casing
Passage, and set and the one-to-one extraction area of air permeable plate on the outer tube of drainage tube, in outer tube interpolation dress with extraction area one by one
Corresponding inner tube, so as to provide a kind of multiple superposed gas system peupendicular hole exploitation simulated test easy to use, efficient set
It is standby.When being simulated experiment, it is only necessary to load spaced apart coal seam and analog material in casing, and it is ventilative to be located at coal seam
Plate upper area, analog material is spaced between adjacent coal seam (namely between adjacent air permeable plate upper area), you can logical
Cross with the one-to-one air permeable plate in coal seam and gas channel to any independent coal seam or coal seam or wherein three coal seams two-by-two
Vacuumized, be filled with methane gas, being filled with the operation such as carbon dioxide, different coal gas content can be simulated different
Multiple superposed gas system, this is that existing coal to be realized with gas pumping simulated test facility；Moreover, drainage tube is set
It is outer tube and inner tube structure, is set and the one-to-one extraction area of air permeable plate, sealed spacer between adjacent extraction area on outer tube
There is dividing plate, the quantity of inner tube is corresponded with extraction area and set, during experiment, it is only necessary to which outer tube is embedded in casing, you can profit
Gas pumping simulated test is carried out simultaneously or asynchronously to corresponding coal seam with the different inner tubes in outer tube, this is also existing coal
To be realized with gas pumping simulated test facility, on the one hand compensate for the blank of existing simulated test facility, be easy to see
Influencing each other between different coal during gas pumping is surveyed, for follow-up study provides material base, on the other hand for many
The exploitation that gas system peupendicular hole extraction drainage tube is put in stacking provides reference.
The outer tube is arranged on casing by coupling in a tubular form and gland, and the coupling screw thread is socketed in outer
The outer end of pipe, and the outer end circumference extension of coupling forms circular first baffle, and the gland is plugged on the outer of outer tube
End, and the outer end circumference extension of gland forms circular second baffle, and be fixed for first baffle by the second baffle
On the corresponding end plate of casing；Nipple is plugged with the gland, the outer 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 inner tube one
One corresponding axially extending bore, the inner and corresponding inner tube docking of the through hole, is respectively connected with the outer end of each through hole
Pipe joint.Outer tube is fixed on casing by coupling and gland, the fixed structure of outer tube is simply firm, and easy to operate
Fast.Inner tube is arranged in outer tube by nipple and gland, makes the mounting structure of inner tube simple, firm.
Sealing ring is lined between corresponding end plate of the first baffle with casing, in the second baffle towards first gear
The side of plate is provided with depressed part, and the first baffle is located in the depressed part, is padded between the first baffle and second baffle
There is sealing ring, sealing ring is also lined between the second baffle and third baffle.
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 also be set on step surface, is conducive to further ensuring that the mutual of each extraction area
Sealing.
The second horizontal pressure head has been evenly arranged four along the length direction of casing, the vertical pressure head and the second level
Pressure head is corresponded and is disposed with four, and the air permeable plate is corresponded with vertical pressure head and is disposed with four, taking out on the outer tube
Exploiting field is corresponded with air permeable plate and is disposed with four, and said inner tube is corresponded with extraction area and is disposed with four, the nipple
On the through hole that opens up circumferentially be evenly equipped with four.
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.
Pad is equipped with " O " shape sealing ring between the case lid and casing top.
Beneficial effect：The present invention in casing by setting the one-to-one second horizontal pressure head, vertical pressure head, air permeable plate
And gas channel, and set on the outer tube of drainage tube and the one-to-one extraction area of air permeable plate, inserting and extraction area in outer tube
One-to-one inner tube, so as to provide a kind of multiple superposed gas system peupendicular hole exploitation simulation examination easy to use, efficient
Equipment is tested, with being skillfully constructed, simple structure, production is easily and the features such as low production cost.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the top view of casing in Fig. 1.
Fig. 3 removes the A-A sectional views of drainage tube for Fig. 1.
Fig. 4 is the structural representation of drainage tube.
Fig. 5 is the I portions enlarged drawing of Fig. 4.
Fig. 6 is the J portions enlarged drawing of Fig. 4.
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, casing 8, " O " shape sealing ring 9, case lid 10, vertical pressure head 11, the 3rd pressing plate
12nd, the first pressing plate 13, first level pressure head 14, air permeable plate 15, the second horizontal pressure head 16, the second pressing plate 17, gas channel 18.
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, the present invention includes casing 8 and case lid 10, at the case lid 10 and the top of casing 8
Between pad be equipped with " O " shape sealing ring 9.Drainage tube, the drainage tube bag are fitted with the wherein one end along its length of the casing 8
Include the outer tube 1 being fixed on casing 8 and the inner tube 3 being inserted into outer tube 1.Inserted in the other end along its length of the casing 8
Equipped with first level pressure head 14, the first vertical pressure in casing 8 is fixed with the inner of the first level pressure head 14
Plate 13.At least two second horizontal pressure heads 16, the second horizontal pressure head are fitted with the side in the width direction of the casing 8
16 are evenly arranged along the length direction of casing 8, and the second horizontal pressure head 16 mutually hangs down with the center line of first level pressure head 14
Directly.The second vertical pressing plate 17 is respectively and fixedly provided with the inner of each second horizontal pressure head 16.Inserted on the case lid 10
There is vertical pressure head 11 one-to-one with the second horizontal pressure head 16, be respectively and fixedly provided with the inner of each vertical pressure head 11 and be located at
3rd pressing plate 12 of the level in casing 8.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, it is provided with the interior bottom of the casing 8 one-to-one with vertical pressure head 11
Air permeable plate 15, is equipped with gas channel 18 below each air permeable plate 15, and one end of the gas channel 18 is by ventilative
Plate 15 and the inner chamber insertion of casing 8, the other end of gas channel 18 run through the outer wall of casing 8 and are fixedly connected with pipe joint 7.Described
Outer tube 1 be provided with the one-to-one extraction area of air permeable plate 15, offer outer drainage holes in each extraction area of outer tube 1,
Dividing plate 2 is provided between the adjacent Liang Ge extractions area of the outer tube 1, adjacent extraction area is sealed cut-off by the dividing plate 2.Institute
The quantity of the quantity and extraction area of stating inner tube 3 is corresponded, and the inner of inner tube 3 is stretched into correspondence extraction area, and in inner tube 3
Offer the interior drainage holes in correspondence extraction area.
As shown in Figure 4 and Figure 5, the outer tube 1 is arranged on casing 8 by coupling 4 in a tubular form and gland 5, institute
The outer end that the screw thread of coupling 4 is socketed in outer tube 1 is stated, and the outer end circumference extension of coupling 4 forms circular first baffle
4a.The gland 5 is plugged on the outer end of outer tube 1, and the outer end circumference extension of gland 5 forms circular second baffle 5a,
Be pressed abd fixed on first baffle 4a on the corresponding end plate of casing 8 by the second baffle 5a.Connect in being plugged with the gland 5
First 6, circumferentially extension formation circular third baffle 6a, the third baffle 6a is fixed on gland 5 for the outer end of the nipple 6
Second baffle 5a on, offer axially extending bore 6b one-to-one with inner tube 3 in the nipple 6, the through hole 6b's
It is inner to be docked with corresponding inner tube 3, it is respectively connected with pipe joint 7 in the outer end of each through hole 6b.In the first baffle 4a
Sealing ring is lined with and the corresponding end plate of casing 8 between, depression is provided with towards the side of first baffle 4a in the second baffle 5a
Portion, the first baffle 4a is located in the depressed part, and sealing ring is lined between the first baffle 4a and second baffle 5a,
Sealing ring is also lined between the second baffle 5a and third baffle 6a.
As shown in Figure 4 and Figure 6, said inner tube 3 is made up of the body that front end is closed, and tube wall is in front fine and rear thick
It is stepped, the outer wall of body is formed the step surface corresponding with dividing plate 2, the step surface is kept off in the rear end of correspondence dividing plate 2, and
And the sealing ring coordinated with the sealing of the outer wall of inner tube 3 is embedded with the via that each dividing plate 2 wears for inner tube 3.The outer tube 1 is every
Outer drainage holes in one extraction area are circumferentially evenly equipped with multiple, and the interior drainage holes region in said inner tube 3 is just to described outer
Drainage holes region.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present embodiment preferably the second horizontal pressure head 16 along casing 8 length side
To being evenly arranged four, the 11 and second horizontal pressure head of vertical pressure head 16 is corresponded and is disposed with four.The air permeable plate
15 are disposed with four with the one-to-one corresponding of vertical pressure head 11, and the extraction area on the outer tube 1 corresponds with air permeable plate 15 and is disposed with
Four, said inner tube 3 is corresponded with extraction area and is disposed with four, and the through hole 6b opened up on the nipple 6 is circumferentially evenly equipped with
Four.
Claims (7)
1. a kind of multiple superposed gas system peupendicular hole exploits simulated test facility, including casing and case lid, on the casing edge
Wherein one end of length direction is fitted with drainage tube, and the drainage tube includes the outer tube being fixed on casing and is inserted into outer tube
Inner tube, be fitted with first level pressure head, the inner of the first level pressure head in the casing other end along its length
The the first vertical pressing plate in casing is fixed with, at least two second are fitted with casing side in the width direction
Horizontal pressure head, the second horizontal pressure head is evenly arranged along the length direction of casing, in each second horizontal pressure head
End is respectively and fixedly provided with the second vertical pressing plate, and vertical pressure head one-to-one with the second horizontal pressure head is fitted with the case lid,
The 3rd pressing plate of the level in casing is respectively and fixedly provided with the inner of each vertical pressure head, it is characterised in that：Described
In casing bottom be provided with the one-to-one air permeable plate of vertical pressure head, be equipped with gas channel below each air permeable plate,
One end of the gas channel is run through cabinet exterior and is fixed by air permeable plate and cabinets cavity insertion, the other end of gas channel
It is connected with pipe joint；Be provided with the outer tube with the one-to-one extraction area of air permeable plate, in each extraction area of outer tube
Outer drainage holes are offered, dividing plate is provided between the adjacent Liang Ge extractions area of the outer tube, the dividing plate is by adjacent extraction
Area's sealing cut-off；The quantity of said inner tube is corresponded with the quantity in extraction area, and the inner of inner tube is stretched into correspondence extraction area, and
And the interior drainage holes in correspondence extraction area are offered on inner pipe.
2. multiple superposed gas system peupendicular hole according to claim 1 exploits simulated test facility, it is characterised in that：Institute
State outer tube to be arranged on casing by coupling in a tubular form and gland, the coupling screw thread is socketed in the outer end of outer tube,
And the outer end of coupling is circumferentially extended and forms circular first baffle, and the gland is plugged on the outer end of outer tube, and presses
The outer end of set is circumferentially extended and forms circular second baffle, and first baffle is pressed abd fixed on the right of casing by the second baffle
Answer on end plate；Nipple is plugged with the gland, the outer end of the nipple is circumferentially extended and forms circular third gear
Plate, the third baffle is fixed on the second baffle of gland, is offered in the nipple and the one-to-one axle of inner tube
To through hole, the inner and corresponding inner tube of the through hole is docked, and pipe joint is respectively connected with the outer end of each through hole.
3. multiple superposed gas system peupendicular hole according to claim 2 exploits simulated test facility, it is characterised in that：
Sealing ring is lined between the first baffle and the corresponding end plate of casing, is opened towards the side of first baffle in the second baffle
There is depressed part, the first baffle is located in the depressed part, and sealing ring is lined between the first baffle and second baffle,
Sealing ring is also lined between the second baffle and third baffle.
4. multiple superposed gas system peupendicular hole according to claim 3 exploits simulated test facility, it is characterised in that：Institute
State inner tube to be made up of the body that front end is closed, and tube wall is in front fine and rear thick stepped, make body outer wall formed with
The corresponding step surface of dividing plate, the step surface gear is in the rear end of correspondence dividing plate, and the mistake worn for inner tube in each dividing plate
The sealing ring coordinated with outer wall of inner tube sealing is embedded with hole.
5. multiple superposed gas system peupendicular hole according to claim 4 exploits simulated test facility, it is characterised in that：Institute
State the second horizontal pressure head and be evenly arranged four along the length direction of casing, the vertical pressure head and the second horizontal pressure head one a pair
Four should be disposed with, the air permeable plate is corresponded with vertical pressure head and is disposed with four, the extraction area on the outer tube with it is ventilative
Plate is corresponded and is disposed with four, and said inner tube is corresponded with extraction area and is disposed with four, and what is opened up on the nipple is logical
Hole is circumferentially evenly equipped with four.
6. the multiple superposed gas system peupendicular hole according to claim 1 or 2 or 3 or 4 or 5 exploits simulated test facility,
It is characterized in that：Outer drainage holes in each extraction area of outer tube are circumferentially evenly equipped with multiple, the interior extraction in said inner tube
Hole region is just to the outer drainage holes region.
7. multiple superposed gas system peupendicular hole according to claim 6 exploits simulated test facility, it is characterised in that：
Pad is equipped with " O " shape sealing ring between the case lid and casing top.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611123712.8A CN106771064B (en) | 2016-12-08 | 2016-12-08 | Multiple superposed gas system vertical well exploits simulated test facility |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611123712.8A CN106771064B (en) | 2016-12-08 | 2016-12-08 | Multiple superposed gas system vertical well exploits simulated test facility |
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| CN106771064B CN106771064B (en) | 2019-01-11 |
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| CN110306964A (en) * | 2019-07-02 | 2019-10-08 | 中国矿业大学 | A kind of visualization of hydraulic fracturing coal seam crackle and antireflective effect evaluation method |
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| CN106771064B (en) | 2019-01-11 |
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