CN203412526U - Device for converting medium sealed in under-pressure operating well - Google Patents
Device for converting medium sealed in under-pressure operating well Download PDFInfo
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- CN203412526U CN203412526U CN201320393075.1U CN201320393075U CN203412526U CN 203412526 U CN203412526 U CN 203412526U CN 201320393075 U CN201320393075 U CN 201320393075U CN 203412526 U CN203412526 U CN 203412526U
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- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims description 22
- 239000007788 liquid Substances 0.000 abstract description 28
- 239000003129 oil well Substances 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model provides a device for converting a medium sealed in an under-pressure operating well, and belongs to the device for good repairing of oil wells and gas wells. The device comprises a conventional under-pressure operation device with under-pressure operation function, an outer cylinder body is arranged below an oil pipe sealer on the conventional under-pressure operation device, a reverse sealer is connected between the outer cylinder body and a pipe clamp above the mouth of the well, the reverse sealer comprises a shell and a sealing sleeve in the shell, and a liquid inlet pipeline and a liquid outlet pipeline are respectively connected on the outer cylinder body. According to the device, liquid in a liquid storage tank enters a liquid storage cavity after being pressurized by a pressure pump, the pressure of liquid in the liquid storage cavity is greater than that of gas in a shaft so that the medium sealed by the sealer is converted into liquid from gas, and gas in the shaft cannot cross the device for converting the sealed medium to be incapable of entering the upper part of the under-pressure operation device, and therefore, under-pressure operation is carried out smoothly.
Description
Technical field
The utility model relates to a kind of oil well, gas well (comprising coal bed gas well) carries out in operation well workover process in the situation that well head has pressure, and the medium that Operating Pressure workover rig is sealed is changed into the device of liquid by gas.
Background technology
Along with oil-gas field development further deeply, oil well, gas well workover treatment are more and more frequent.During routine work, generally all adopt high density well control fluids kill-job or open flow means after the earth pressure release of Oil/gas Well, to carry out operation.Not only cost is high in high density well control fluids kill-job, the engineering time is long, and the passage of meeting blocking underground oil-gas Layer Oil, Water, Gas, and impact is recovered the oil and gas production effect.If adopt open flow step-down, not only can reduce in a large number stratum energy, to subsequent production, bring immeasurable loss, also can cause a large amount of environment pollutions simultaneously.Therefore, Operating Pressure technology has unique advantage in oil gas water well upkeep operation.
Operating Pressure refers to certain pressure within keeping pit shaft, plays a kind of advanced person's of lower tubular column and downhole tool underground work technology in not kill-job, situation about not bleeding off pressure.For Oil/gas Well, Operating Pressure great advantage is that it can protect and maintain the original production capacity on stratum, avoids the pollution to oil-gas Layer, is that long period of development and the stable volume increase of oil gas field provides good condition.
At the relatively high oil well of gas-oil ratio, implement in the process of Operating Pressure technique, due to the liquid in pit shaft (crude oil and water) and gas (accompanying gas with crude oil) generation Gravity Separation, at the upper space of pit shaft, often by gas, filled and account for, gas well is all the more so.So the medium that the sealer of Oil/gas Well Operating Pressure equipment seals is gas often.Compare with sealer seal fluid, sealer sealing gas exists following not enough:
1, the permeability of gas is much higher than liquid (water), so the difficulty of sealing gas is more much bigger than the difficulty of seal fluid.
2, the current sealer overwhelming majority for Oil/gas Well Operating Pressure designs according to the technical requirements of seal fluid, therefore, poor for the compliance of sealing gas.Be under equal air-proof condition, the wastage of gas will be far longer than the wastage of liquid.
The harm of the gas of 3, missing by sealer will be far longer than the harm of leakage liquid, and likely cause catch fire, blast or the serious accident such as personnel are poisoning.
Comprehensive above-mentioned reason, although the Operating Pressure equipment of generally being applied has at present been realized not kill-job, not blowout prevention Operating Pressure at the higher producing well of strata pressure and water injection well.But for gas recovery well and the relatively high producing well of gas liquid ratio, utilize common Operating Pressure technology at present will be very restricted (Shengli Oil Field is just not yet implemented gas well Operating Pressure at present).Under current process conditions, the sealing that realize gas is completely very difficult.
Summary of the invention
Technical problem to be solved in the utility model is that the device that provides a kind of Operating Pressure well to change sealed medium, to complete the Operating Pressure work of high gas-liquid ratio producing well and gas recovery well.
The utility model is to realize like this, a kind of Operating Pressure well changes the device of sealed medium, it comprises the conventional operation device under pressure that possesses Operating Pressure function, below oil pipe sealer on conventional operation device under pressure, there is outer cylinder body, between outer cylinder body and the pipe clamping device above well head, be connected with reverse sealer, oppositely sealer consists of the sealing shroud in shell and shell, on outer cylinder body, be connected with respectively feed liquor pipeline and fluid pipeline, feed liquor pipeline is connected with fluid reservoir through force (forcing) pump, and fluid pipeline is connected with fluid reservoir through pressure-regulating valve.
Adopt above-mentioned Operating Pressure well to change the device of sealed medium, liquid in fluid reservoir enters liquid storage cylinder after force (forcing) pump pressurization, because the fluid pressure in liquid storage cylinder is greater than the gas pressure in pit shaft, make the medium that sealer seals change liquid into by gas, make gas in pit shaft can not cross the sealed medium conversion equipment of the utility model completely simultaneously and enter into the top of operation device under pressure, having realized carrying out smoothly of Operating Pressure work.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing conventional operation device under pressure structure.
Fig. 2 is the local enlarged diagram of existing conventional operation device under pressure structure.
Fig. 3 is the schematic diagram of the Operating Pressure sealed medium conversion device structure of the utility model.
Fig. 4 is the local enlarged diagram of the Operating Pressure sealed medium conversion device structure of the utility model.
Fig. 5 is the partial enlarged drawing of Fig. 4.
The specific embodiment
Below in conjunction with accompanying drawing, further illustrate the utility model.
As shown in Figure 1, the described conventional operation device under pressure (21) that possesses Operating Pressure function partly seals blowout preventer (4), oil pipe sealer (5), blooie pipe (20), pipe clamping device (7), oil pipe by the top-down pipe clamping device that moves about (1), self-sealing blowout preventer (2), ball sealing blowout preventer (3), sucker rod and partly seals blowout preventer (8), entirely seals the parts such as blowout preventer (9) and form.Different and the different technologies requirement (as pressure rating) according to downhole tool in pit shaft, the parts of its operation device under pressure and specification can be done corresponding adjustment, with the demand of adaptive zone pressed operation technique.What current all operation device under pressures sealed is all the medium (pressure in pit shaft is greater than the pressure in operation device under pressure all the time) in pit shaft.For the relatively high oil well and gas well of gas liquid ratio, on the top of pit shaft, be generally all full of gas medium.So, at present will be in the gentle aboveground Operating Pressure that realizes of oil well, the medium that operation device under pressure will seal is gas in fact.
Liquid in fluid reservoir can be the sewage of oil gas field output, and can suitably increase the viscosity (also can adopt other oily liquid) of sewage, to reduce the sealing difficulty of sealer, improves the reliability of Operating Pressure.
As Fig. 3, shown in Fig. 4, a kind of Operating Pressure well of the utility model changes the device of sealed medium, it comprises the conventional operation device under pressure (21) that possesses Operating Pressure function, below oil pipe sealer (5) on conventional operation device under pressure, there is outer cylinder body (6), between outer cylinder body and well head (10) pipe clamping device (7) above, be connected with reverse sealer (31), oppositely sealer consists of the sealing shroud (19) in shell (18) and shell, on outer cylinder body, be connected with respectively feed liquor pipeline (13) and fluid pipeline (14), feed liquor pipeline is connected with fluid reservoir (16) through force (forcing) pump (15), fluid pipeline is connected with fluid reservoir (16) through pressure-regulating valve (17).Can according to the size of pit shaft internal pressure, by pressure-regulating valve, control the output pressure of force (forcing) pump, make the output pressure of force (forcing) pump be greater than all the time the pressure in pit shaft.
In Operating Pressure process, force (forcing) pump provides the liquid with certain pressure all the time, the sealed chamber forming between the pipe sealing through reverse sealer and operation device under pressure and they, then return to fluid reservoir.The fluid pressure that force (forcing) pump provides is greater than the pressure in pit shaft all the time, thereby guarantee that the medium that all dynamic sealers seal in Operating Pressure process is always liquid, realize medium transformation to liquid by gas that operation device under pressure seals, made the gas in pit shaft can not cross the device of the utility model completely and enter into operation device under pressure top simultaneously.
By force (forcing) pump, to sealing chamber, provide the liquid with pressure, and while making the pressure of this liquid be greater than all the time the pressure in pit shaft, the pressure of liquid is slightly larger than the gas pressure (as large 10% left and right) in pit shaft.
Sucker rod partly seals blowout preventer only just to be had when sealed pipe is sucker rod.
While controlling the output pressure of force (forcing) pump according to the size of pit shaft internal pressure by pressure-regulating valve, by artificial adjustment pressure-regulating valve.
Claims (1)
1. an Operating Pressure well changes the device of sealed medium, it is characterized in that, it comprises the conventional operation device under pressure (21) that possesses Operating Pressure function, below oil pipe sealer (5) on conventional operation device under pressure, there is outer cylinder body (6), between outer cylinder body and well head (10) pipe clamping device (7) above, be connected with reverse sealer (31), oppositely sealer consists of the sealing shroud (19) in shell (18) and shell, on outer cylinder body, be connected with respectively feed liquor pipeline (13) and fluid pipeline (14), feed liquor pipeline is connected with fluid reservoir (16) through force (forcing) pump (15), fluid pipeline is connected with fluid reservoir (16) through pressure-regulating valve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320393075.1U CN203412526U (en) | 2013-07-03 | 2013-07-03 | Device for converting medium sealed in under-pressure operating well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320393075.1U CN203412526U (en) | 2013-07-03 | 2013-07-03 | Device for converting medium sealed in under-pressure operating well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203412526U true CN203412526U (en) | 2014-01-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320393075.1U Expired - Fee Related CN203412526U (en) | 2013-07-03 | 2013-07-03 | Device for converting medium sealed in under-pressure operating well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203412526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822248A (en) * | 2016-03-22 | 2016-08-03 | 孟庆拥 | Under-pressure well workover method |
-
2013
- 2013-07-03 CN CN201320393075.1U patent/CN203412526U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822248A (en) * | 2016-03-22 | 2016-08-03 | 孟庆拥 | Under-pressure well workover method |
| CN105822248B (en) * | 2016-03-22 | 2018-05-11 | 孟庆拥 | A kind of method for well fixing with pressure |
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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 |
Granted publication date: 20140129 |
|
| CX01 | Expiry of patent term | ||
| CU01 | Correction of utility model |
Correction item: Termination upon expiration of patent Correct: Revocation of Patent Expiration and Termination False: On July 21, 2023, the expiration and termination of 39 volumes and 2902 issues of patents Number: 29-02 Volume: 39 |
|
| CU01 | Correction of utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 |