CN104963641B - A kind of coal bed gas well drags for coal dust device - Google Patents
A kind of coal bed gas well drags for coal dust device Download PDFInfo
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- CN104963641B CN104963641B CN201510381813.4A CN201510381813A CN104963641B CN 104963641 B CN104963641 B CN 104963641B CN 201510381813 A CN201510381813 A CN 201510381813A CN 104963641 B CN104963641 B CN 104963641B
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- valve seat
- bed gas
- gas well
- coal
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Abstract
The present invention relates to the workover operation device of coal bed gas well, specifically a kind of coal bed gas well drags for coal dust device.Including drive rod, storage tube, upper screw, landing nipple, valve seat, ring valve, lower screw and sleeve, wherein ring valve loads in valve seat from the bottom of valve seat, and seal cooperation, the through hole that the upper end of ring valve is provided with by valve seat passes, and it is connected with the lower end of landing nipple, the upper end of landing nipple is connected with the lower end of upper screw, the upper end connection drive rod of upper screw, the lower end of ring valve is connected with lower screw, the upper end connection storage tube of valve seat, upper screw and landing nipple are placed in storage tube, the lower end branch sleeve of valve seat, lower screw is placed in sleeve.The present invention is simple in construction, can remove totally the coal dust at coal bed gas well bottom, make coal bed gas well normal gas producing.
Description
Technical field
The present invention relates to the workover operation device of coal bed gas well, specifically a kind of coal bed gas well drags for coal dust device.
Background technology
Coal bed gas to discharge well before aerogenesis is started and during aerogenesis in water, shaft bottom back pressure is reduced with it, makes coal bed gas
Self-energy overcome pit shaft resistance to flow on ground to be extracted.During water pumping gas production, in order to avoid pressure wave
The dynamic influence to coal seam, displacement is typically controlled, makes its draining flow velocity very slow, the ability that flowing water carries coal dust is low, and coal dust holds
Easily it is deposited on shaft bottom.When coal dust deposits to certain altitude in shaft bottom, the passage of coal bed gas and output water will be blocked.Therefore,
Coal bed gas well will periodically remove shaft bottom coal dust in recovery process.General use of method for removing coal bed gas well ground coal powder at present is followed
Ring douche.Lower people's washover pipe, flushing fluid are injected into well by high pressure pump truck through tubing string i.e. in pit shaft, then from tubing string with covering
Annular space outflow between pipe, flushing fluid flushing manhole ground coal powder in cyclic process, and well is carried out, resume production.But this
Kind douche has following weak point：1st, because coal bed gas well production for a long time causes formation depletion, leakage is serious, well-flushing water meeting
Coal seam is flowed into, coal dust does not rush not come out not only, and flushing water enters coal seam and coal bed gas is not parsed, from now on can not aerogenesis；2、
Rinsing construction needs pump truck, tank car and well head auxiliary facility, and operating expenses is high, and labor intensity is big.Also use at the scene at present
Sand pump removes the shaft bottom sand setting of oil-water well, but it is not suitable for coal bed gas well and removes shaft bottom coal dust, because the particle diameter of coal dust
Small, batch filtration device can't stop coal dust, and coal dust can be circulated in well and can not be eliminated.Such as use secondary filter, filter meeting again
It is blocked, it is not worked.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of coal bed gas well to drag for coal dust device.The coal bed gas well drags for coal
Powder device, the coal dust at coal bed gas well bottom can be removed totally, make coal bed gas well normal gas producing.
To achieve these goals, the present invention uses following technical scheme：
A kind of coal bed gas well drags for coal dust device, including drive rod, storage tube, upper screw, landing nipple, valve seat, ring
Valve, lower screw and sleeve, wherein ring valve load in valve seat from the bottom of valve seat, and the ring valve coordinates with valve base sealing, institute
State the through hole that the upper end of ring valve is provided with by valve seat to pass and be connected with the lower end of landing nipple, the upper end of the landing nipple
It is connected with the lower end of upper screw, the upper end connection drive rod of the upper screw, the lower end of the ring valve and lower spiral
Device is connected, and the upper end connection storage tube of the valve seat, the upper screw and landing nipple are placed in storage tube, described
The lower end branch sleeve of valve seat, the lower screw are placed in sleeve.
The upper screw is identical with lower screw structure, including center-pole and the spiral being arranged on center-pole
Piece.The bottom of the upper screw is provided with anti-settling stirring sheet, and the anti-settling stirring sheet is 2-6 pieces and is uniformly distributed circumferentially
On described on the center-pole of screw.The bottom of the lower screw is provided with stirring sheet, the stirring sheet be 2-6 pieces,
And it is uniformly distributed circumferentially on the center-pole of lower screw.The pitch of flight on the upper screw is 40-
200mm, the pitch of the flight on the lower screw is 40-200mm.
The upper end of the ring valve is provided with connecting rod, and the through hole that the connecting rod is provided with by valve seat is passed and connect with positioning
The lower end connection of head.
Advantages of the present invention and beneficial effect are：
1. the present invention is simple in construction, economical and practical, labor intensity is reduced, the coal dust at coal bed gas well bottom can be removed dry
Only, coal bed gas well normal gas producing is made.
2. the present invention is coordinated by the separation or sealing of ring valve and valve seat, the conveying or extraction of coal dust slurry, operation letter are realized
It is single, securely and reliably.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Wherein：1 is drive rod, and 2 be storage tube, and 3 be upper screw, and 4 be anti-settling stirring sheet, and 5 be landing nipple, and 6 are
Valve seat, 7 be ring valve, and 8 be lower screw, and 9 be stirring sheet, and 10 be sleeve.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, including drive rod 1, storage tube 2, upper screw 3, landing nipple 5, valve seat 6, ring valve 7, lower spiral shell
Cyclone 8 and sleeve 10, wherein ring valve 7 load in valve seat 6 from the bottom of valve seat 6, and the ring valve 7 coordinates with the sealing of valve seat 6, institute
The upper end for stating ring valve 7 is provided with connecting rod, the through hole that the connecting rod is provided with by valve seat 6 pass and with the lower end of landing nipple 5
Connection.The upper end of the landing nipple 5 is connected with the lower end of upper screw 3, the upper end connection driving of the upper screw 3
Bar 1.The lower end of the ring valve 7 is connected with lower screw 8, the upper end connection storage tube 2 of the valve seat 6, the upper spiral dress
Put 3 and landing nipple 5 be placed in storage tube 2, the lower end branch sleeve 10 of the valve seat 6, the lower screw 8 is placed in
In sleeve 10.The drive rod 1, upper screw 3, landing nipple 5, ring valve 7 and lower screw 8 are connected as overall and energy
For linear motion vertically in storage tube 2 and sleeve 10, the valve seat 6 is used to seal with ring valve 7 and coordinated, while plays axial direction
Position-limiting action.
The upper screw 3 is identical with the lower structure of screw 8, including center-pole and the spiral shell being arranged on center-pole
Blade.The bottom of the upper screw 3 is provided with anti-settling stirring sheet 4, and the anti-settling stirring sheet 4 is 2-6 pieces and circumferentially uniform
It is distributed on the center-pole of the upper screw 3, the anti-settling stirring sheet 4 can tilt installation, can also be vertically-mounted.Institute
The bottom for stating lower screw 8 is provided with stirring sheet 9, and the stirring sheet 9 is 2-6 pieces and is uniformly distributed circumferentially in lower spiral dress
Put on 8 center-pole, the stirring sheet 9 can tilt installation, can also be vertically-mounted.The upper screw 3 and lower spiral
The pitch of flight on device 8 is 40-200mm, and pitch is determined according to hole diameter and driving rotating speed.
The effect of the landing nipple 5 is to prevent ring valve 7 from departing from valve seat 6 too far, prevents lower screw 8 from inserting coal dust mistake
Deep, the position behind the bottom of the landing nipple 5 and the upper contact of valve seat 6 between ring valve 7 and valve seat 6 is maintained for constant.
The storage tube 2 and the length of sleeve 10 determines according to coal dust amount, and can connect several makes it have enough volumes that coal dust is complete
Pull out in portion.
The present invention operation principle be：
The present invention is by the way that to behind shaft bottom, the sleeve 10 is supported temporarily motionless by coal dust, is rotated on ground under drive rod 1
Drive rod 1, make screw 3, lower screw 8, stirring sheet rotation, shaft bottom is formed the coal dust slurry of high concentration, and pass through
The lifting of flight enters in storage tube 2, and in the presence of upper screw 3, the coal dust in coal dust slurry will not sink, and protect all the time
Admixture is held, with the progress of stirring, coal dust is gradually reduced, and the present invention is fallen therewith, and shaft bottom coal dust is transported into storage powder
In cylinder 2, drive rod 1 is above carried, the ring valve 7 is contacted with valve seat 6, and coal dust is closed in storage tube 2 and is suggested, shaft bottom coal dust quilt
Pull out, coal bed gas is extracted with ground UNICOM.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (9)
1. a kind of coal bed gas well drags for coal dust device, it is characterised in that including drive rod (1), storage tube (2), upper screw
(3), landing nipple (5), valve seat (6), ring valve (7), lower screw (8) and sleeve (10), wherein ring valve (7) are from valve seat (6)
Bottom load in valve seat (6), the ring valve (7) coordinates with valve seat (6) sealing, and the upper end of the ring valve (7) is by valve seat (6)
The through hole being provided with is passed and is connected with the lower end of landing nipple (5), upper end and the upper screw (3) of the landing nipple (5)
Lower end connection, the upper end connection drive rod (1) of the upper screw (3), the lower end of the ring valve (7) and lower screw
(8) connect, the upper end connection storage tube (2) of the valve seat (6), the upper screw (3) and landing nipple (5) are placed in storage
In powder drum (2), the lower end branch sleeve (10) of the valve seat (6), the lower screw (8) is placed in sleeve (10)；On
Drive rod (1) is carried, the ring valve (7) is contacted with valve seat (6), and coal dust is closed in storage tube (2) and is suggested.
2. coal bed gas well according to claim 1 drags for coal dust device, it is characterised in that the upper screw (3) and under
Screw (8) structure is identical, including center-pole and the flight being arranged on center-pole.
3. coal bed gas well according to claim 2 drags for coal dust device, it is characterised in that under the upper screw (3)
Portion is provided with anti-settling stirring sheet (4).
4. coal bed gas well according to claim 3 drags for coal dust device, it is characterised in that the anti-settling stirring sheet (4) is 2-6
Piece is simultaneously uniformly distributed circumferentially on described on the center-pole of screw (3).
5. coal bed gas well according to claim 2 drags for coal dust device, it is characterised in that under the lower screw (8)
Portion is provided with stirring sheet (9).
6. coal bed gas well according to claim 5 drags for coal dust device, it is characterised in that the stirring sheet (9) be 2-6 pieces,
And it is uniformly distributed circumferentially on the center-pole of lower screw (8).
7. coal bed gas well according to claim 2 drags for coal dust device, it is characterised in that on the upper screw (3)
The pitch of flight is 40-200mm.
8. coal bed gas well according to claim 2 drags for coal dust device, it is characterised in that on the lower screw (8)
The pitch of flight is 40-200mm.
9. coal bed gas well according to claim 1 drags for coal dust device, it is characterised in that the upper end of the ring valve (7) is provided with
Connecting rod, the through hole that the connecting rod is provided with by valve seat (6) are passed and are connected with the lower end of landing nipple (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510381813.4A CN104963641B (en) | 2015-07-02 | 2015-07-02 | A kind of coal bed gas well drags for coal dust device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510381813.4A CN104963641B (en) | 2015-07-02 | 2015-07-02 | A kind of coal bed gas well drags for coal dust device |
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| Publication Number | Publication Date |
|---|---|
| CN104963641A CN104963641A (en) | 2015-10-07 |
| CN104963641B true CN104963641B (en) | 2018-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510381813.4A Active CN104963641B (en) | 2015-07-02 | 2015-07-02 | A kind of coal bed gas well drags for coal dust device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202152667U (en) * | 2011-08-01 | 2012-02-29 | 中国石油天然气股份有限公司 | Oilfield chemical underground delivery device |
| CN103975117A (en) * | 2011-11-28 | 2014-08-06 | 因诺瓦钻探和干预有限公司 | Improved wireline drilling system |
| CN204782884U (en) * | 2015-07-02 | 2015-11-18 | 中联煤层气国家工程研究中心有限责任公司 | Coal seam gas well drags for buggy device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO315212B1 (en) * | 2001-10-24 | 2003-07-28 | Maritime Well Service As | Method and apparatus for collecting screw |
-
2015
- 2015-07-02 CN CN201510381813.4A patent/CN104963641B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202152667U (en) * | 2011-08-01 | 2012-02-29 | 中国石油天然气股份有限公司 | Oilfield chemical underground delivery device |
| CN103975117A (en) * | 2011-11-28 | 2014-08-06 | 因诺瓦钻探和干预有限公司 | Improved wireline drilling system |
| CN204782884U (en) * | 2015-07-02 | 2015-11-18 | 中联煤层气国家工程研究中心有限责任公司 | Coal seam gas well drags for buggy device |
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| Publication number | Publication date |
|---|---|
| CN104963641A (en) | 2015-10-07 |
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