CN202544797U - Wellhead blowout preventer for thermal recovery horizontal well - Google Patents
Wellhead blowout preventer for thermal recovery horizontal well Download PDFInfo
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- CN202544797U CN202544797U CN 201220087169 CN201220087169U CN202544797U CN 202544797 U CN202544797 U CN 202544797U CN 201220087169 CN201220087169 CN 201220087169 CN 201220087169 U CN201220087169 U CN 201220087169U CN 202544797 U CN202544797 U CN 202544797U
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- blowout preventer
- horizontal well
- seal
- oil cylinder
- lubricator
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Abstract
The utility model provides a wellhead blowout preventer for a thermal recovery horizontal well. The wellhead blowout preventer comprises a blowout prevention pipe and a water cooling pipe, wherein one end of the blowout prevention pipe is connected with a wellhead, and the other end of the blowout prevention pipe is connected with a first-stage sealing device through a joint; and the first-stage sealing device is connected with one end of the water cooling pipe through a lengthened joint, and the other end of the water cooling pipe is connected with a second-stage sealing device. A blowout prevention sealing device in the wellhead blowout preventer adopts two-stage automatic sealing, and a designed water cooling circulating device is used for cooling a testing continuous oil pipe, so that the difficult problem of dynamic sealing under high-temperature and high-pressure conditions can be solved, high-temperature and high-pressure steam can be prevented from being blown out from a place where the continuous oil pipe is driven in testing operation of the horizontal well, and the wellhead blowout preventer can further play a role of protecting the safety of a testing instrument and testing staff.
Description
Technical field
The utility model relates to heavy crude heat extraction horizontal well down-hole steam parameter measuring technology in the petroleum industry development process, specifically a kind of horizontal well thermal recovery wellhead blowout preventer.
Background technology
Horizontal well has become the key technology that Shengli Oil Field improves the heavy crude reservoir exploitation effect; Horizontal well notes vapour can efficiently develop common heavy oil and difficulty is employed heavy crude reservoir; But, think that the notes vapour quality of injecting the horizontal segment oil reservoir, the situation of utilizing of joining the vapour amount and the thermal efficiency of each horizontal oil layer section directly influence the development effectiveness of heavy crude heat extraction horizontal well through to after the exploitation effect analysis.For parameters such as the steam in jection flow of understanding horizontal well horizontal segment oil reservoir, mass dryness fraction, pressure, temperature; Just must annotate vapour and carry out downhole testing horizontal well; Just can grasp oil well through test data and annotate vapour quality and horizontal segment oil reservoir steam entry profile, so just can in time adjust oil well and annotate the vapour situation, can guarantee that high-quality steam injects oil reservoir; Can under go on foot oil well and annotate the vapour profile control reliable basis is provided; Thereby improve the development effectiveness of horizontal well thermal recovery, reach the recovery ratio purpose that improves heavy crude reservoir, keeping oilfield stable production, going up to produce and be of great significance.
In view of this, to the problems referred to above, propose a kind of reasonable in design and effectively improve being mainly used in of above-mentioned disappearance and use coiled tubing to carry out the horizontal well thermal recovery wellhead blowout preventer in the operation process.
Summary of the invention
The purpose of the utility model is to provide the horizontal well thermal recovery wellhead blowout preventer; Blowout prevention sealing device has wherein adopted secondary from movable sealing; The water-cooled of design but EGR is lowered the temperature to the test coiled tubing; Solved a movable sealing difficult problem under the high-temperature and high-pressure conditions, can guarantee in carrying out the horizontal well test jobs, to prevent that high temperature and high pressure steam from playing the effect of protection tester and tester's safety from the place ejection that coiled tubing is lowered to.
In order to reach above-mentioned purpose, the utility model provides the horizontal well thermal recovery wellhead blowout preventer, comprises lubricator, water composite cooling pipe, and an end of said lubricator is connected with well head, and the other end then connects the primary seal device through joint; Said primary seal device is connected with water composite cooling pipe through lengthening joint, and the other end of water composite cooling pipe connects two stage sealing device.
Said lubricator is connected to well head through adpting flange, is provided with the emptying valve at lubricator and well head junction; The top of said two stage sealing device is connected with the top lengthening joint.
Said primary seal device comprises oil cylinder and in-oil cylinder piston, and said oil cylinder one end links to each other through the joint of seal casinghousing and lubricator end, and the other end is connected to lengthening joint, in the seal casinghousing set inside seal is arranged.
Said two stage sealing device comprises the in-oil cylinder piston of top oil cylinder and top, and said top oil cylinder one end is connected with water composite cooling pipe through the top seal housing, and the other end is connected to the top lengthening joint, is provided with upper seal in the top seal enclosure interior.
Compared to prior art, the blowout prevention sealing device of the utility model design has adopted the secondary movable sealing; Tester is high temperature resistant 350 ℃, high pressure 25MPa; Constructing operation is simple, tests reliable and secure.
In order to optimize steam injection parameter and oil reservoir steam entry profile, test horizontal well thermal recovery down-hole steam parameter.The horizontal well thermal recovery wellhead blowout preventer not only can be realized tester is ensconced in the lubricator; So that in its lower going-into-well, simultaneously tester is taken out and ensconces in the lubricator, can also, the use coiled tubing seal coiled tubing in going into the well process from well; Prevent that high-temperature steam from leaking; And prevent that the coiled tubing driving head lost efficacy, and utilize adding of double ram type preventer to hold flashboard coiled tubing is carried out effective clamping, prevent the drop generation of accident of coiled tubing.Because be to annotate the vapour well, temperature is high, considers the temperature tolerance of coiled tubing injection head, needs coiled tubing is cooled off, and avoids coiled tubing drive system high temperature failure.The blowout prevention sealing device of the utility model design has adopted secondary from movable sealing; The water-cooled of design but EGR is lowered the temperature to the test coiled tubing; Solved a movable sealing difficult problem under the high-temperature and high-pressure conditions, can guarantee in carrying out the horizontal well test jobs, to prevent that high temperature and high pressure steam from playing the effect of protection tester and tester's safety from the place ejection that coiled tubing is lowered to.
Description of drawings
Fig. 1 is the structure chart of the utility model horizontal well thermal recovery wellhead blowout preventer.
Among the figure: 1, emptying valve; 2, adpting flange; 3, lubricator; 4, joint; 5, seal casinghousing; 6, seal; 7, oil cylinder; 8, piston; 9, lengthening joint; 10, water composite cooling pipe; 11, top seal housing; 12, upper seal; 13, top oil cylinder; 14, upper piston; 15, top lengthening joint.
The specific embodiment
Detailed description of relevant the utility model and technology contents, conjunction with figs. are explained as follows, yet accompanying drawing only provides the usefulness of reference with explanation, are not to be used for the utility model is limited.
According to shown in Figure 1, the horizontal well thermal recovery wellhead blowout preventer comprises lubricator 3, water composite cooling pipe 10, and an end of said lubricator is connected with well head, and the other end then connects the primary seal device through joint 4; Said primary seal device is connected with water composite cooling pipe through lengthening joint 9, and the other end of water composite cooling pipe connects two stage sealing device.Lubricator 3 is connected to well head through adpting flange 2, is provided with emptying valve 1 at lubricator and well head junction; The top of said two stage sealing device is connected with top lengthening joint 15.Gas in emptying valve 1 can guarantee to remain in carries out emptying, and adpting flange 2 is to be used for connecting well head and lubricator 3, and the effect of lubricator is tester is gone into the well before and tests and deposit tester after tripping out instrument, the assurance pressure that do not leak.
The primary seal device comprises oil cylinder 7 and in-oil cylinder piston 8, and said oil cylinder one end links to each other through the joint 4 of seal casinghousing 5 and lubricator end, and the other end is connected to lengthening joint 9, in the seal casinghousing set inside seal 6 is arranged.Seal can be implemented in instrument carry out before going into the well pre-sealed, in the test jobs process, carry out movable sealing, guarantee that pressure does not leak.Hydraulic oil is arranged in the oil cylinder; Promote piston 8 and move, indirectly-acting seals on seal, and lengthening joint connects oil cylinder 79 times; On connect water composite cooling pipe 10; Water composite cooling pipe is in order in the test jobs process, to lower the temperature to coiled tubing, guarantees coiled tubing injection head operate as normal in its temperature resistant range, and water composite cooling pipe partly is connected with the secondary seal on top through a joint.Two stage sealing device comprises the in-oil cylinder piston 14 of top oil cylinder 13 and top; Said top oil cylinder one end is connected with water composite cooling pipe 10 through top seal housing 11; The other end is connected to top lengthening joint 15, is provided with upper seal 12 in the top seal enclosure interior.
The above is merely the preferred embodiment of the utility model, and non-in order to limit the claim of the utility model, the equivalence of the patent spirit of other utilization the utility model changes, and all should all belong to the claim of the utility model.
Claims (4)
1. the horizontal well thermal recovery wellhead blowout preventer is characterized in that, comprises lubricator, water composite cooling pipe, and an end of said lubricator is connected with well head, and the other end then connects the primary seal device through joint; Said primary seal device is connected with water composite cooling pipe through lengthening joint, and the other end of water composite cooling pipe connects two stage sealing device.
2. horizontal well thermal recovery wellhead blowout preventer according to claim 1 is characterized in that said lubricator is connected to well head through adpting flange, is provided with the emptying valve at lubricator and well head junction; The top of said two stage sealing device is connected with the top lengthening joint.
3. horizontal well thermal recovery wellhead blowout preventer according to claim 2; It is characterized in that; Said primary seal device comprises oil cylinder and in-oil cylinder piston; Said oil cylinder one end links to each other through the joint of seal casinghousing and lubricator end, and the other end is connected to lengthening joint, in the seal casinghousing set inside seal is arranged.
4. horizontal well thermal recovery wellhead blowout preventer according to claim 2; It is characterized in that; Said two stage sealing device comprises the in-oil cylinder piston of top oil cylinder and top; Said top oil cylinder one end is connected with water composite cooling pipe through the top seal housing, and the other end is connected to the top lengthening joint, is provided with upper seal in the top seal enclosure interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220087169 CN202544797U (en) | 2012-03-09 | 2012-03-09 | Wellhead blowout preventer for thermal recovery horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220087169 CN202544797U (en) | 2012-03-09 | 2012-03-09 | Wellhead blowout preventer for thermal recovery horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202544797U true CN202544797U (en) | 2012-11-21 |
Family
ID=47165449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220087169 Expired - Fee Related CN202544797U (en) | 2012-03-09 | 2012-03-09 | Wellhead blowout preventer for thermal recovery horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202544797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236184A (en) * | 2021-05-24 | 2021-08-10 | 中海油田服务股份有限公司 | High-temperature wellhead heat insulation system |
-
2012
- 2012-03-09 CN CN 201220087169 patent/CN202544797U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236184A (en) * | 2021-05-24 | 2021-08-10 | 中海油田服务股份有限公司 | High-temperature wellhead heat insulation system |
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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 |
Granted publication date: 20121121 Termination date: 20140309 |