CN204804739U - Oil pipe prevents gusher mouth pressure relief device - Google Patents
Oil pipe prevents gusher mouth pressure relief device Download PDFInfo
- Publication number
- CN204804739U CN204804739U CN201520368293.9U CN201520368293U CN204804739U CN 204804739 U CN204804739 U CN 204804739U CN 201520368293 U CN201520368293 U CN 201520368293U CN 204804739 U CN204804739 U CN 204804739U
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- oil pipe
- pressure relief
- relief device
- pressure
- well head
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Abstract
The utility model discloses an oil pipe prevents gusher mouth pressure relief device, a pressure for releasing in the pressure oil pipe of area, the outside at oil pipe is established to the pressure relief device cover, be formed with the pressure release cavity between pressure relief device's internal face and oil pipe's the outer wall, and be formed with on pressure relief device's the lateral wall pressure release hole (31), pressure relief device's bottom links to each other with the first cross of oil pipe (1), the upper portion in the first cross of oil pipe (1) is place to coupling between the adjacent oil pipe, and lie in inside the pressure relief device, loosening tubing coupling, gas in the oil pipe can make in discharging the pressure release cavity from the clearance of coupling, and discharge pressure release hole (31) from the pressure relief device lateral wall. The utility model discloses an oil pipe prevents gusher mouth pressure relief device, the safe pressure release of the oil pipe trip -out in -process of having realized pressing in the area has ensured the safety of well head operation, has avoided the injury of the hydrogen sulfide gas body, has prevented the pollution that crude oil blows out and bring for the well site, the pressure very big hidden danger of bringing for safety out of control.
Description
Technical field
The utility model relates to a kind of oil pipe pressure relief device, particularly relates to a kind of oil pipe blowout well head pressure relief device of safety relief.
Background technology
At present, underground work is more, operation early stage, often can run into most of heavy oil wells upper repair operation before, oil pipe viscous crude returns, and thin oil well is due to long-term production, fail to carry out wax removal operation in time, all cause oil pipe blocking, oil jacket is obstructed.These wells, due to when oil pipe high pressure de-plugging is obstructed, are merely able to carry out sleeve pipe horizontal sliding kill-job, and after the effective salt level weighing apparatus of cover falls on the ground stressor layer, because oil jacket exists density contrast, for 5000m tubing string, sleeve pipe is 1.14g/cm
3salt solution, oil pipe is that 0.95g/cm at least can produce 9.5MPa pressure.In trip-out process, due to oil pipe blocking, every root oil pipe all needs pressure release, oil pipe sprays a large amount of miscella and gas, causes well site to pollute and construction speed, and very easily due to too high density contrast, when having caused being drilled into a certain degree of depth, oil pipe has been suppressed logical, and gas blowout accident occurs.
The outer tripping assembly with pressure adopted of Current Domestic is all for oil pipe no pressure, the well in operation of sleeve tube pressure, present actual conditions are that sleeve pipe does not have pressure, tubing pressure can not safety relief, site operation personnel is merely able to emit spray to pull out of hole, there is very large potential safety hazard and well control risk, also there is the low feature of operation timeliness in addition.
In existing band pressuring oil pipe, operation still adopts a conventional oil pipe mode, rising in Tubing During Running, normally carrying out slight shackle with hydraulic tongs, unloading pressure in buckle releasing tube from oil pipe.Mainly there is following characteristics:
1) pressure release is slow, in managing, have pressure, and protects without well control device unloading buckle, so can only slightly shackle, out, complete next root oil pipe that recurs afterwards to be released, causes the activity duration to extend to make oil, gas slow release in pipe;
2) there is certain well control risk, because of oil pipe blocking, have pressure in pipe, if having abnormal pressure unloading buckle, in work progress, workman does not control well, and as easy as rolling off a log formation accident is hurted sb.'s feelings;
3) have certain limitation, if there is poisonous and hazardous gas in well, this kind of pressure release mode is because operating at well head, and have the risk that personnel are poisoning, operating personnel need be with positive-pressure type breather to construct.
Utility model content
The purpose of this utility model is to provide the oil pipe blowout well head pressure relief device that a kind of structure is simple, prevent blowout.
For achieving the above object, the concrete technical scheme of a kind of oil pipe blowout well head pressure relief device of the present utility model is:
A kind of oil pipe blowout well head pressure relief device, for releasing the pressure in band pressuring oil pipe, pressure relief device is set in the outside of oil pipe, pressure release chamber is formed between the internal face of pressure relief device and the outside wall surface of oil pipe, and the sidewall of pressure relief device is formed with relief hole, the bottom of pressure relief device is connected with tubing head four-way, box cupling between adjacent oil pipe is seated in the top of tubing head four-way, and be positioned at pressure relief device inside, unscrew tubing coupling, the gas in oil pipe can be made to be put in pressure release chamber from the interstitial row of box cupling, and discharge from the relief hole on pressure relief device sidewall.
Further, the pressure relief flange that pressure relief device comprises annular preventer and is connected with annular preventer, annular preventer is used for Seal Oil cover annular space, pressure relief flange is arranged on the bottom of annular preventer, relief hole is arranged on the sidewall of pressure relief flange, and the gas in pressure release chamber is discharged by the relief hole on pressure relief flange.
Further, relief hole is connected with circulating tank, and the gas that relief hole is discharged enters in circulating tank.
Further, the bottom of box cupling is arranged with point half tubing hanger, and point half tubing hanger is for supporting oil pipe.
Further, point half tubing hanger is combined to form by two and half cylindrical shells, point half tubing hanger being provided with for splitting a point buckle for half tubing hanger, being linked together by two and half cylindrical shells by buckle.
Further, buckle is screw, is fixed on half cylindrical shell of opposite side by half cylindrical shell of screw by side.
Further, the top of oil pipe is provided with the cock for Seal Oil tube opening.
The advantage of oil pipe blowout well head pressure relief device of the present utility model is:
1) achieve the safety relief in oil pipe trip-out process with pressure, oil pipe pressure release, trip-out speed are accelerated, and pressure is discharged in circulating tank by pressure relief vent, has ensured the safety of shaft mouth operation, has avoided the injury of hydrogen sulfide gas;
2) shorten duty cycle, improve operation timeliness, decrease the activity duration that well head is out of control;
3) operating cost is reduced;
4) successfully recover oil well productivity, improve economic benefit;
5) solve the well control problem of well head safe pressure release, prevent crude oil to spray the pollution brought to well site, the very big hidden danger that pressure runaway brings to safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of oil pipe blowout well head pressure relief device of the present utility model;
Fig. 2 is the structural representation of point half tubing hanger in the utility model.
Detailed description of the invention
In order to better understand the purpose of this utility model, structure and function, below in conjunction with accompanying drawing, further detailed description is done to a kind of oil pipe blowout well head pressure relief device of the present utility model.
As depicted in figs. 1 and 2, it shows for a kind of oil pipe blowout well head pressure relief device of the present utility model, for releasing the pressure in band pressuring oil pipe, pressure relief device is set in the outside of oil pipe, pressure release chamber is formed between the internal face of pressure relief device and the outside wall surface of oil pipe, and the sidewall of pressure relief device is formed with relief hole 31, the bottom of pressure relief device is connected with tubing head four-way 1, box cupling between adjacent oil pipe is seated in the top of tubing head four-way 1, and be positioned at pressure relief device inside, unscrew tubing coupling, the gas in oil pipe can be made to be put in pressure release chamber from the interstitial row of box cupling, and discharge from the relief hole 31 on pressure relief device sidewall.
Further, the pressure relief flange 3 that pressure relief device comprises annular preventer 2 and is connected with annular preventer, annular preventer 2 is for Seal Oil cover annular space, swivel shackle is carried out in sealed states to make oil pipe, pressure relief flange 3 is arranged on the bottom of annular preventer, can discharge the gas in oil pipe, relief hole 31 is arranged on the sidewall of pressure relief flange 3, and the gas in pressure release chamber is discharged by the relief hole 31 on pressure relief flange 3.Wherein, relief hole 31 is connected with circulating tank, and the gas of being discharged by relief hole 31 enters in circulating tank, avoids the injury of hydrogen sulfide gas, has ensured the safety of shaft mouth operation.In addition, annular preventer 2, pressure relief flange 3 and tubing head four-way 1 are threaded by screw rod 5.
Further, as shown in Figure 2, the bottom of box cupling is arranged with point half tubing hanger 4, divide half tubing hanger 4 for supporting oil pipe, by oil pipe from resealing pressure relief device, wherein, point half tubing hanger 4 is combined to form by two and half cylindrical shells, divide in half tubing hanger 4 and be provided with for splitting a point buckle for half tubing hanger 4, by buckle, two and half cylindrical shells are linked together.It should be noted, the buckle in the utility model is screw, is fixed on half cylindrical shell of opposite side by half cylindrical shell of screw by side.Divide half tubing hanger 4 to be combined to form by two and half cylindrical shells, point half tubing hanger 4 being provided with for splitting a point buckle for half tubing hanger 4, by buckle, two and half cylindrical shells being linked together.
Further, the top of oil pipe is provided with the cock (not shown) for Seal Oil tube opening, tightens cock and prevents the pressure in oil pipe from spraying from the opening part at oil pipe top, avoid blowout out of control accident.
Be described below in conjunction with the course of work of accompanying drawing to oil pipe blowout well head pressure relief device of the present utility model:
First, load onto cock at the top open part of oil pipe, cut-out tap prevents pressure from spraying from the opening part of oil pipe, oil pipe is played the box cupling place to being connected with next root tubing round thread, installs point half tubing hanger 4 in the bottom of box cupling, supports oil pipe.
Then, lower drain line, is sent to the tubing hanger position of tubing head four-way 1 by point half tubing hanger 4, relies on the deadweight of oil pipe to seal pressure relief device.
Then, hydraulic tongs is used to carry out slight shackle (usually controlling to buckle at 4-5) to the screw thread between adjacent oil pipe, then annular preventer 2 is closed, by slight rotation pipeline slowly, release moment of torsion, oil pipe internal pressure, from screw thread release, is then discharged in circulating tank by pressure relief vent 31.
Finally, play oil pipe, unload cock, repeat above operation, continue to carry out pressure release to next root oil pipe.
Oil pipe blowout well head pressure relief device of the present utility model, achieve the safety relief in oil pipe trip-out process with pressure, oil pipe pressure release, trip-out speed are accelerated, and pressure is discharged in circulating tank by pressure relief vent, ensure the safety of shaft mouth operation, avoid the injury of hydrogen sulfide gas; Shorten duty cycle, improve operation timeliness, decrease the activity duration that well head is out of control; Reduce operating cost; Successfully recover oil well productivity, improve economic benefit; Solve the well control problem of well head safe pressure release, prevent crude oil to spray the pollution brought to well site, the very big hidden danger that pressure runaway brings to safety.
By specific embodiment, the utility model is further described above; but it should be understood that; here concrete description; should not be construed as the restriction to essence of the present utility model and scope; one of ordinary skilled in the art to the various amendments that above-described embodiment is made, belongs to the scope that the utility model is protected after reading this specification.
Claims (7)
1. an oil pipe blowout well head pressure relief device, for releasing the pressure in band pressuring oil pipe, it is characterized in that, pressure relief device is set in the outside of oil pipe, pressure release chamber is formed between the internal face of pressure relief device and the outside wall surface of oil pipe, and the sidewall of pressure relief device is formed with relief hole (31), the bottom of pressure relief device is connected with tubing head four-way (1), box cupling between adjacent oil pipe is seated in the top of tubing head four-way (1), and be positioned at pressure relief device inside, unscrew tubing coupling, the gas in oil pipe can be made to be put in pressure release chamber from the interstitial row of box cupling, and discharge from the relief hole (31) on pressure relief device sidewall.
2. oil pipe blowout well head pressure relief device according to claim 1, it is characterized in that, the pressure relief flange (3) that pressure relief device comprises annular preventer (2) and is connected with annular preventer, annular preventer (2) is for Seal Oil cover annular space, pressure relief flange (3) is arranged on the bottom of annular preventer, relief hole (31) is arranged on the sidewall of pressure relief flange (3), and the gas in pressure release chamber is discharged by the relief hole (31) on pressure relief flange (3).
3. oil pipe blowout well head pressure relief device according to claim 1, is characterized in that, relief hole (31) is connected with circulating tank, and the gas that relief hole (31) is discharged enters in circulating tank.
4. oil pipe blowout well head pressure relief device according to claim 1, is characterized in that, the bottom of box cupling is arranged with point half tubing hanger (4), and point half tubing hanger (4) is for supporting oil pipe.
5. oil pipe blowout well head pressure relief device according to claim 4, it is characterized in that, half tubing hanger (4) is divided to be combined to form by two and half cylindrical shells, divide in half tubing hanger (4) and be provided with for splitting the buckle dividing half tubing hanger (4), by buckle, two and half cylindrical shells are linked together.
6. oil pipe blowout well head pressure relief device according to claim 5, is characterized in that, buckle is screw, is fixed on half cylindrical shell of opposite side by half cylindrical shell of screw by side.
7. oil pipe blowout well head pressure relief device according to claim 1, is characterized in that, the top of oil pipe is provided with the cock for Seal Oil tube opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520368293.9U CN204804739U (en) | 2015-06-01 | 2015-06-01 | Oil pipe prevents gusher mouth pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520368293.9U CN204804739U (en) | 2015-06-01 | 2015-06-01 | Oil pipe prevents gusher mouth pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204804739U true CN204804739U (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520368293.9U Expired - Fee Related CN204804739U (en) | 2015-06-01 | 2015-06-01 | Oil pipe prevents gusher mouth pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204804739U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285547A (en) * | 2016-10-19 | 2017-01-04 | 克拉玛依天兴泰石油科技有限公司 | Carry for SAGD well surveying temperature cable tie pressure, under sealing device |
| CN106368645A (en) * | 2016-10-19 | 2017-02-01 | 克拉玛依天兴泰石油科技有限公司 | Construction method for lifting up and placing down SAGD well temperature measurement cable under pressure |
| CN108035692A (en) * | 2017-12-05 | 2018-05-15 | 中国石油天然气集团公司 | For the device and well head control method in blowout time limit oil pipe column |
| CN109252826A (en) * | 2018-10-31 | 2019-01-22 | 史敏敏 | A kind of preventer being easy to fixed petroleum pipeline |
| CN111271018A (en) * | 2020-01-11 | 2020-06-12 | 南通理工学院 | Method for preventing drilling fluid from splashing |
-
2015
- 2015-06-01 CN CN201520368293.9U patent/CN204804739U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285547A (en) * | 2016-10-19 | 2017-01-04 | 克拉玛依天兴泰石油科技有限公司 | Carry for SAGD well surveying temperature cable tie pressure, under sealing device |
| CN106368645A (en) * | 2016-10-19 | 2017-02-01 | 克拉玛依天兴泰石油科技有限公司 | Construction method for lifting up and placing down SAGD well temperature measurement cable under pressure |
| CN106285547B (en) * | 2016-10-19 | 2018-12-04 | 克拉玛依天兴泰石油科技有限公司 | For SAGD well temperature measuring cable it is with pressure mention, under sealing device |
| CN106368645B (en) * | 2016-10-19 | 2019-09-03 | 克拉玛依天兴泰石油科技有限公司 | SAGD well temperature measuring cable is with pressure to be mentioned, under construction method |
| CN108035692A (en) * | 2017-12-05 | 2018-05-15 | 中国石油天然气集团公司 | For the device and well head control method in blowout time limit oil pipe column |
| CN108035692B (en) * | 2017-12-05 | 2020-05-08 | 中国石油天然气集团公司 | Device for limiting a tubing string during blowout and wellhead control method |
| CN109252826A (en) * | 2018-10-31 | 2019-01-22 | 史敏敏 | A kind of preventer being easy to fixed petroleum pipeline |
| CN109252826B (en) * | 2018-10-31 | 2021-02-26 | 台州智子科技有限公司 | Blowout preventer easy to fix oil delivery pipe |
| CN111271018A (en) * | 2020-01-11 | 2020-06-12 | 南通理工学院 | Method for preventing drilling fluid from splashing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20200601 |