CN201567998U - Drainage gas production well head sealing suspension device - Google Patents
Drainage gas production well head sealing suspension device Download PDFInfo
- Publication number
- CN201567998U CN201567998U CN2009202776011U CN200920277601U CN201567998U CN 201567998 U CN201567998 U CN 201567998U CN 2009202776011 U CN2009202776011 U CN 2009202776011U CN 200920277601 U CN200920277601 U CN 200920277601U CN 201567998 U CN201567998 U CN 201567998U
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- Prior art keywords
- annular
- threeway
- gasket
- gas production
- well
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- Expired - Lifetime
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 239000000725 suspension Substances 0.000 title claims description 17
- 238000007789 sealing Methods 0.000 title abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000005086 pumping Methods 0.000 claims description 17
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 32
- 238000005516 engineering process Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 3
- 241000521257 Hydrops Species 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
A drainage gas production well mouth sealing and hanging device is applied to a device for hanging a continuous oil pipe on a well mouth of a gas production well in an oil and gas field in a sealing manner. A stepped central hole is formed between two opening ends of the tee joint, which are positioned on the same central line, an annular lower conical sleeve is arranged in the stepped central hole, an annular lower gasket is arranged on the upper portion of the lower conical sleeve, a cylindrical sealing rubber cylinder with an annular cross section is arranged on the upper portion of the lower gasket, an upper gasket is arranged on the upper portion of the sealing rubber cylinder, an upper conical sleeve is arranged on the upper portion of the annular upper gasket, a central hole is sleeved on the upper conical sleeve, the upper conical sleeve is an annular cylinder, a conical surface is arranged at the top of the cylinder, a screw hole perpendicular to the central line of the tee joint is formed in a tee joint flange, a seat seal jackscrew is arranged in the screw hole, the inner end portion of the seat seal jackscrew is in an inclined plane shape. The effect is as follows: the coiled tubing can be smoothly put into the well without killing the well, and the well mouth is well sealed and fixed. The pressure difference of the oil jacket is reduced, so that the daily gas production is increased.
Description
Technical field
The utility model relates to the exploitation of oil-gas field technical field, and particularly a kind of water pumping gas production equipment is a kind of gas recovery well well head sealed suspension device.
Background technology
The fluid-carrying capability difference of gas well under different flow strings.Part is produced the gas well of water in the energy blowing production of operation initial stage, and along with the exploitation in gas field, gas well deliverability descends gradually, and aquifer yield increases.Original flow string unreasonable structure, output water can not in time be discharged, thereby makes the gas well stop-spraying.The large scale flow string is replaced by the small size flow string, carries out preferred tubing string water pumping gas production and become a kind of important way that solves product aqueous vapor well hydrops problem.
At present, changing flow string has conventional well killing change, non-well killing change flow string or adopts coiled tubing as operation techniques such as flow strings.When adopting conventional well killing change flow string, because well killing fluid injury stratum causes gas well in time not resume production; Employing is lowered to the small size coiled tubing as flow string in original flow string, can improve the gas well fluid-carrying capability, makes gas well in time recover blowing production.Simultaneously, coiled tubing does not need kill-job during as the flow string construction operation, has avoided kill-job injury stratum, has reduced to trip out original tubing string and has caused the disconnected risk of complex accident such as taking off of oil pipe.
At the scene in the construction operation, coiled tubing well head sealed suspension device is the key equipment of coiled tubing water drainage-gas recovery technology, coiled tubing is during as the flow string water pumping gas production, after some oil gas field plan operations continuous pipe is suspended on well head, but the undesirable coiled tubing water pumping gas production The Application of Technology that restricted of the suspension equipment of well head.In order to allow during this technology puts into production widely, researched and developed coiled tubing well head sealed suspension device.
The utility model content
The purpose of this utility model is: a kind of water pumping gas production well head sealed suspension device is provided, solve the coiled tubing well head and hang the technical bottleneck problem, make coiled tubing can be lowered into the shaft bottom safely, exactly, and it is played sealing, fixing effect at gas production wellhead.
The technical solution adopted in the utility model is: water pumping gas production well head sealed suspension device, mainly form by bind silk, inferior pyramidal cover, lower gasket, cartridge, Upper gasket, the fan-shaped slips of upper conical cover and threeway of seat, three openends in threeway have flange, can be connected with main valve with well head.It is characterized in that: between two openends of the same center line of threeway, stepped centre bore is arranged, annular inferior pyramidal cover is arranged in stepped centre bore, annular lower gasket is arranged at the top of inferior pyramidal cover, cross section is arranged at the top of lower gasket is the column cartridge of annular, Upper gasket is arranged at the top of cartridge, and upper conical cover is arranged at the top of annular Upper gasket.The upper conical centre bore that is with, upper conical cover are the cylinder of annular, and taper seat is arranged at the cylinder top.The centre bore of inferior pyramidal cover, lower gasket, cartridge, Upper gasket and upper conical cover can pass through coiled tubing.The screw that vertical threeway center line is arranged on the threeway flange has the seat silk that binds in the screw, the bind inner end of silk of seat is a beveled, and the bind end chamfer of silk of seat withstands on the taper seat of upper conical cover top.When screwing seat and bind thread, the seat silk that binds inwardly advances, and upper conical cover moves down and press pad and cartridge.Cartridge can seal the coiled tubing outer wall by compression.
Inner conical surface is arranged at the stepped centre bore of threeway top, on the inner conical surface of the stepped centre bore of threeway top a fan-shaped slips is arranged.Fan-shaped slips can block coiled tubing, plays the effect of temporary fixed coiled tubing.
Design parameters:
Rated pressure: 35MPa;
Inside nominal diameter: 2
7/
8" (φ 62mm) is suitable for the KQ65 well head, and flange connects, and can hang 1
1/
2" small size coiled tubing such as (38.1mm);
Anti-hydrogen sulfide, the anti-hydrogen of steel is broken, and low-alloy just has been suitable for sour environment;
The anti-sulphur rubber of oil resistant is selected in sealing, and heatproof is greater than U level (120 ℃);
The withstand voltage 60000psi of bulk material.
Consult Fig. 1.During field operation, water pumping gas production well head sealed suspension device is installed in well head main valve bottom earlier, fitting operation window and blowout preventer successively again, to manage 8 continuously with continuous pipe implement and be lowered to the needed degree of depth, the rotation seat silk that binds 1 makes upper conical cover 6 and Upper gasket 5 compress cartridge 4, seal continuous pipe 8, fastening nut.Then, emptying manipulation window upper pressure, whether 4 sealings of check cartridge seal tight.Promote operation window and put into fan-shaped slips 7, with 8 of pipes are tight continuously.At last, remove all above parts of water pumping gas production well head sealed suspension device, cut off pipe continuously in position.
The beneficial effects of the utility model: the utility model water pumping gas production well head sealed suspension device, can under the snubbing serving situation, realize smoothly being lowered to coiled tubing, after snubbing serving was lowered to coiled tubing, the well head sealing and fixing was good.Gas well has significantly reduced oil jacket pressure reduction after adopting coiled tubing water pumping gas production technology, and daily output tolerance is risen, and the shaft bottom hydrops is discharged smoothly.
Description of drawings
Fig. 1 is the utility model sealed suspension device general illustration structural profile schematic diagram.
Among the figure, the silk that 1. binds, 2. inferior pyramidal cover, 3. lower gasket, 4. cartridge, 5. Upper gasket, 6. upper conical cover, 7. fan-shaped slips, 8. coiled tubing, 9. threeway.
The specific embodiment
Embodiment 1: with a water pumping gas production well head sealed suspension device is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model water pumping gas production well head sealed suspension device, mainly form by bind silk 1, inferior pyramidal cover 2, lower gasket 3, cartridge 4, Upper gasket 5, upper conical cover 6 fan-shaped slips 7 and threeway 9 of seat, three openends in threeway 9 have flange, can be connected with main valve 10 with well head.
Between two openends of threeway 9 same center lines, stepped centre bore is arranged, an annular inferior pyramidal cover 2 is arranged in stepped centre bore, an annular lower gasket 3 is arranged at the top of inferior pyramidal cover 2, cross section is arranged at the top of lower gasket 3 is the column cartridge 4 of annular, cartridge 4 adopts the anti-sulphur rubber of oil resistant to make, and can produce distortion under certain pressure.Upper gasket 5 is arranged at the top of cartridge 4, and upper conical cover 6 is arranged at the top of annular Upper gasket 5.Upper conical cover 6 has centre bore, and upper conical cover 6 is the cylinder of annular, and the taper seat of 45 degree is arranged at the cylinder top.
The screw that vertical threeway 9 center lines are arranged on threeway 9 flanges has the seat silk 1 that binds in the screw, seat silk 1 the inner end that binds is a beveled, and the bind end chamfer of silk 1 of seat withstands on the upper conical cover 6 top taper seats.Be fixed with a back of the body cap on screw, the silk 1 that seat can be bound is fixed on the screw.
The centre bore of inferior pyramidal cover 2, lower gasket 3, cartridge 4, Upper gasket 5 and upper conical cover 6 is that 40mm can pass through coiled tubing 8 (external diameter 38.1mm).
Inner conical surface is arranged at threeway 9 stepped centre bore tops, on threeway 9 stepped centre bore top inner conical surfaces a fan-shaped slips 7 is arranged.Fan-shaped slips 7 can block coiled tubing 8, plays the effect of temporary fixed coiled tubing 8.
Utilize water pumping gas production well head sealed suspension device at the Su Lige gas field 38-14 of Soviet Union well φ 38.1mm coiled tubing to be lowered to 3330m (surpassing tubing shoe 10m) smoothly first, the well head sealing and fixing is good.
Revive after the test of 38-14 well coiled tubing, oil jacket pressure reduction is reduced to 1.8MPa by 4.0MPa, and aerogenesis 4000 sides produce water 0.5 side, produces steadily, and the condition of production is significantly better than before testing.By test, this technology is applicable to low pressure, gas stringer water pumping gas production; Aquifer yield is less than 50 sides/sky gas well production.
Claims (2)
1. water pumping gas production well head sealed suspension device, mainly by seat bind the silk (1), inferior pyramidal cover (2), lower gasket (3), cartridge (4), Upper gasket (5), fan-shaped slips of upper conical cover (6) (7) and threeway (9) are formed, three openends in threeway (9) have flange, can be connected with main valve (10) with well head, it is characterized in that: between two openends of the same center line of threeway (9), stepped centre bore is arranged, annular inferior pyramidal cover (2) is arranged in stepped centre bore, annular lower gasket (3) is arranged at the top of inferior pyramidal cover (2), cross section is arranged at the top of lower gasket (3) is the column cartridge (4) of annular, Upper gasket (5) is arranged at the top of cartridge (4), upper conical cover (6) is arranged at the top of annular Upper gasket (5), upper conical cover (6) has centre bore, upper conical cover (6) is the cylinder of annular, and taper seat is arranged at the cylinder top, the screw that vertical threeway (9) center line is arranged on threeway (9) flange, have in the screw seat bind the silk (1), the seat bind the silk (1) inner end be beveled, the seat bind the silk (1) end chamfer withstand on the taper seat of upper conical cover (6) top.
2. water pumping gas production well head sealed suspension device according to claim 1 is characterized in that: inner conical surface is arranged at the stepped centre bore of threeway (9) top, on the inner conical surface of the stepped centre bore of threeway (9) top a fan-shaped slips (7) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202776011U CN201567998U (en) | 2009-11-25 | 2009-11-25 | Drainage gas production well head sealing suspension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202776011U CN201567998U (en) | 2009-11-25 | 2009-11-25 | Drainage gas production well head sealing suspension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201567998U true CN201567998U (en) | 2010-09-01 |
Family
ID=42660285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202776011U Expired - Lifetime CN201567998U (en) | 2009-11-25 | 2009-11-25 | Drainage gas production well head sealing suspension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201567998U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266860A (en) * | 2013-05-16 | 2013-08-28 | 宝鸡石油机械有限责任公司 | Lock-ring installation pressure test tool |
| CN107905755A (en) * | 2017-12-01 | 2018-04-13 | 王鲁洋 | A kind of application method of coiled tubing dynamic sealing device |
| CN109441391A (en) * | 2018-11-21 | 2019-03-08 | 中国石油集团渤海石油装备制造有限公司 | A kind of pressure break gas wellhead equipment |
| CN112943148A (en) * | 2021-01-12 | 2021-06-11 | 中国石油天然气股份有限公司 | Double-sealing suspension method and device for speed pipe column |
| CN113931467A (en) * | 2021-10-26 | 2022-01-14 | 张书平 | Ponding drainage device that construction used |
-
2009
- 2009-11-25 CN CN2009202776011U patent/CN201567998U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266860A (en) * | 2013-05-16 | 2013-08-28 | 宝鸡石油机械有限责任公司 | Lock-ring installation pressure test tool |
| CN107905755A (en) * | 2017-12-01 | 2018-04-13 | 王鲁洋 | A kind of application method of coiled tubing dynamic sealing device |
| CN107905755B (en) * | 2017-12-01 | 2019-10-22 | 江苏艾伦弗罗机械制造有限公司 | A kind of application method of coiled tubing dynamic sealing device |
| CN110735609A (en) * | 2017-12-01 | 2020-01-31 | 王鲁洋 | Use method of petroleum industrial devices |
| CN110735609B (en) * | 2017-12-01 | 2021-11-09 | 淮北卓本科技有限责任公司 | Application method of device for petroleum industry |
| CN109441391A (en) * | 2018-11-21 | 2019-03-08 | 中国石油集团渤海石油装备制造有限公司 | A kind of pressure break gas wellhead equipment |
| CN112943148A (en) * | 2021-01-12 | 2021-06-11 | 中国石油天然气股份有限公司 | Double-sealing suspension method and device for speed pipe column |
| CN113931467A (en) * | 2021-10-26 | 2022-01-14 | 张书平 | Ponding drainage device that construction used |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |