CN102704862B - Special wellhead tee connecting device for underbalanced drilling - Google Patents
Special wellhead tee connecting device for underbalanced drilling Download PDFInfo
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- CN102704862B CN102704862B CN201210223401.4A CN201210223401A CN102704862B CN 102704862 B CN102704862 B CN 102704862B CN 201210223401 A CN201210223401 A CN 201210223401A CN 102704862 B CN102704862 B CN 102704862B
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Abstract
The invention relates to the technical field of a connecting device for an underbalanced drilling pipeline, specifically a special wellhead tee connecting device for underbalanced drilling. The special wellhead tee connecting device for underbalanced drilling comprises a wellhead tee, wherein a first passage which is through from left to right is arranged inside the wellhead tee; a second passage which is communicated with the first passage is arranged below the first passage; the left end and the right end of the first passage are respectively connected with a left connecting port and a right connecting port; and annular sealed mounting slots are respectively arranged on the left end and the right end of the wellhead tee outside the left connecting port and the right connecting port. The special wellhead tee connecting device for underbalanced drilling has a rational and compact structure, and is convenient to use. A plurality of pipelines are connected by the wellhead tee; while the undergrounded underbalanced operation is conducted, drilling fluid flows through a special underbalanced throttle manifold so as to exert the effects of throttling, circulating and pressure controlling on the drilling fluid; moreover, the drilling technology is optimized, and the drilling safety is improved.
Description
Technical field
The present invention relates under balance pressure drilling pipeline connecting device technical field, is a kind of under balance pressure drilling Special wellhead three-way connection device.
Background technology
In under balance pressure drilling process in the past, swivel control head is connected with liquid-operated flat valve, and the special choke manifold of underbalance is connected with internal control pipeline, flows through route by the switch control rule mineshaft annulus drilling fluid of liquid-operated flat valve; This connected mode significantly increases the risk of under-balance drilling operation, there is certain potential safety hazard.
Summary of the invention
The invention provides a kind of under balance pressure drilling Special wellhead three-way connection device, overcome the deficiency of above-mentioned prior art, what it effectively can solve existing drilling fluid flows through the risk that route adds under-balance drilling operation, there is the problem of certain potential safety hazard.
Technical scheme of the present invention is realized by following measures: a kind of under balance pressure drilling Special wellhead three-way connection device, comprises wellhead tee joint; The first passage having left and right to communicate in the inside of wellhead tee joint, has the second channel communicated with first passage below first passage; The left end of first passage and right-hand member have left connectivity port and right connectivity port respectively, and the left end of the wellhead tee joint outside left connectivity port and outside right connectivity port and right-hand member have the sealing mounting groove of annular respectively; On wellhead tee joint outside sealing mounting groove, circle distribution has at least three threaded mounting holes respectively; In the You Xia connectivity port, lower end of second channel, there is the sealing mounting groove of annular the lower end of the wellhead tee joint outside lower connectivity port, and on the wellhead tee joint outside sealing mounting groove, circle distribution has at least three threaded mounting holes.
Here is the further optimization and/or improvements to foregoing invention technical scheme:
Above-mentioned left connectivity port can be installed with to rotate and control joint, and right connectivity port is installed with the high pressure line that choke manifold special with underbalance is connected; Liquid-operated flat valve is installed with in lower connectivity port; Sealing ring is installed with respectively in sealing mounting groove.
Above-mentioned left connectivity port controls joint with rotation and is fixed together by flange and attachment screw; Right connectivity port and high pressure line are fixed together by flange and attachment screw; Lower connectivity port and liquid-operated flat valve are fixed together by flange and attachment screw.
Above-mentioned wellhead tee joint can be rectangular.
Reasonable and compact in structure of the present invention, easy to use; By wellhead tee joint, multi-pipeline is connected; Realize when down-hole underbalance operation, what make drilling fluid flows through route by the special choke manifold of underbalance simultaneously, realizes effect drilling fluid being played to throttling, circulation and pressure control; Drilling optimization technique, improves the safety of drillng operation.
Accompanying drawing explanation
Accompanying drawing 1 is that the master of preferred embodiment looks sectional structure schematic diagram.
Accompanying drawing 2 is the left TV structure schematic diagram of wellhead tee joint in the present invention.
Accompanying drawing 3 is the axis of rotation geodesic structure schematic diagram of wellhead tee joint in the present invention.
Coding in accompanying drawing is respectively: 1 is wellhead tee joint, and 2 is first passage, and 3 is second channel, 4 is left connectivity port, and 5 is right connectivity port, and 6 is threaded mounting hole, 7 is lower connectivity port, 8 is sealing mounting groove, and 9 control joint for rotating, and 10 is high pressure line, 11 is liquid-operated flat valve, 12 is flange, and 13 is attachment screw, and 14 is sealing ring.
Detailed description of the invention
The present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and actual conditions.
In the present invention, for convenience of description, the description of the relative position relation of each parts is all be described according to the Butut mode of Figure of description, as: the position relationship of upper and lower, left and right etc. determines according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing, the invention will be further described:
As shown in accompanying drawing 2,3, this under balance pressure drilling Special wellhead three-way connection device comprises wellhead tee joint 1; The first passage 2 having left and right to communicate in the inside of wellhead tee joint 1, has the second channel 3 communicated with first passage 2 below first passage 2; The left end of first passage 2 and right-hand member have left connectivity port 4 and right connectivity port 5 respectively, and the left end of the wellhead tee joint 1 outside left connectivity port 4 and outside right connectivity port 5 and right-hand member have the sealing mounting groove 8 of annular respectively; On wellhead tee joint 1 outside sealing mounting groove 8, circle distribution has at least three threaded mounting holes 6 respectively; In the You Xia connectivity port, lower end 7 of second channel 3, there is the sealing mounting groove 8 of annular the lower end of the wellhead tee joint 1 outside lower connectivity port 7, and on the wellhead tee joint 1 outside sealing mounting groove 8, circle distribution has at least three threaded mounting holes.Wellhead tee joint 1 is convenient to the installation between multi-pipeline.
According to actual needs, above-mentioned under balance pressure drilling Special wellhead three-way connection device can be made further optimization and/or improvements:
As shown in Figure 1, be installed with in left connectivity port 4 and rotate control joint 9, right connectivity port 5 is installed with the high pressure line 10 that choke manifold special with underbalance is connected; Liquid-operated flat valve 11 is installed with in lower connectivity port 7; Sealing ring 14 is installed with respectively in sealing mounting groove 8.Make rotation control joint 9, high pressure line 10 by wellhead tee joint 1 to be connected with liquid-operated flat valve 11, the other end of high pressure line 10 is connected with the special choke manifold of underbalance; Drilling fluid can be made when underbalance operation, successively by mineshaft annulus, rotate and control joint 9, wellhead tee joint 1, high pressure line 10, the special choke manifold of underbalance, liquid-gas separator and vibrosieve and be circulated back in slurry tank, realize the effect that drilling fluid plays throttling, circulation and pressure control; Optimize the enforcement of drilling technology, add the safety of drillng operation; In addition, sealing ring 14 can increase the sealing that flange 12 connects.
As shown in Figure 1, left connectivity port 4 is controlled joint 9 and is fixed together by flange 12 and attachment screw 13 with rotating; Right connectivity port 5 is fixed together by flange 12 and attachment screw 13 with high pressure line 10; Lower connectivity port 7 is fixed together by flange 12 and attachment screw 13 with liquid-operated flat valve 11.Be convenient to rotate control joint 9, high pressure line 10 and liquid-operated flat valve 11 like this mount and dismount respectively and between wellhead tee joint 1.
As shown in Figure 3, as required, wellhead tee joint 1 is rectangular.
Above technical characteristic constitutes most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
The installation of preferred embodiment and use procedure: first, be arranged on the left connectivity port 4 of wellhead tee joint 1, right connectivity port 5 and lower connectivity port 7 respectively by rotation control joint 9, high pressure line 10 and liquid-operated flat valve 11; The other end of high pressure line 10 is arranged on the special choke manifold of underbalance, and drilling team's choke manifold is still connected with internal control pipeline; When underbalance operation, close manually gate valve and liquid-operated flat valve on internal control pipeline, make drilling fluid control joint 9, wellhead tee joint 1, high pressure line 10, the special choke manifold of underbalance, liquid-gas separator and vibrosieve by mineshaft annulus, rotation successively and be circulated back in slurry tank; When non-underbalance operation, as the operation such as closing well, kill-job, then open manually gate valve on internal control pipeline, the high pressure line 10 of closing liquid-operated flat valve 11 and being connected with the special choke manifold of underbalance, makes drilling fluid loop back slurry tank by mineshaft annulus, drilling spool, internal control pipeline, drilling team's choke manifold, vibrosieve successively.
Claims (1)
1. a under balance pressure drilling Special wellhead three-way connection device, is characterized in that comprising wellhead tee joint; The first passage having left and right to communicate in the inside of wellhead tee joint, has the second channel communicated with first passage below first passage; The left end of first passage and right-hand member have left connectivity port and right connectivity port respectively, and the left end of the wellhead tee joint outside left connectivity port and outside right connectivity port and right-hand member have the sealing mounting groove of annular respectively; On wellhead tee joint outside sealing mounting groove, circle distribution has at least three threaded mounting holes respectively; In the You Xia connectivity port, lower end of second channel, there is the sealing mounting groove of annular the lower end of the wellhead tee joint outside lower connectivity port, and on the wellhead tee joint outside sealing mounting groove, circle distribution has at least three threaded mounting holes; Wherein: left connectivity port can be installed with to rotate and control joint, and right connectivity port is installed with the high pressure line that choke manifold special with underbalance is connected; Liquid-operated flat valve is installed with in lower connectivity port; Sealing ring is installed with respectively in sealing mounting groove; Left connectivity port is controlled joint with rotation and is fixed together by flange and attachment screw; Right connectivity port and high pressure line are fixed together by flange and attachment screw; Lower connectivity port and liquid-operated flat valve are fixed together by flange and attachment screw; Wellhead tee joint is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210223401.4A CN102704862B (en) | 2012-07-02 | 2012-07-02 | Special wellhead tee connecting device for underbalanced drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210223401.4A CN102704862B (en) | 2012-07-02 | 2012-07-02 | Special wellhead tee connecting device for underbalanced drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102704862A CN102704862A (en) | 2012-10-03 |
| CN102704862B true CN102704862B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210223401.4A Active CN102704862B (en) | 2012-07-02 | 2012-07-02 | Special wellhead tee connecting device for underbalanced drilling |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110331952A (en) * | 2019-07-18 | 2019-10-15 | 北京格瑞迪斯石油技术有限公司 | It is a kind of to be switched fast part flow arrangement for fine controlled pressure drilling |
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| CN200955370Y (en) * | 2006-07-12 | 2007-10-03 | 新疆石油管理局钻井工艺研究院 | Rotary control head for drilling well |
| CN201068733Y (en) * | 2007-07-05 | 2008-06-04 | 辽河石油勘探局 | Aerated drilling safety gas injection device |
| CN101525992A (en) * | 2009-01-22 | 2009-09-09 | 中国石油集团川庆钻探工程有限公司钻采工艺技术研究院 | Closed cuttings storage device for sulfur-bearing formation underbalanced drilling |
| US7686076B2 (en) * | 2005-02-22 | 2010-03-30 | Weatherford/Lamb, Inc. | Expandable tubulars for use in a wellbore |
| CN201627567U (en) * | 2010-04-01 | 2010-11-10 | 洪泽东俊机械有限公司 | Vertical choke-kill manifold for oceanic use |
| CN101892824A (en) * | 2010-07-22 | 2010-11-24 | 中国石油天然气集团公司 | Combined multi-stage pressure control method and device |
| CN202659200U (en) * | 2012-07-02 | 2013-01-09 | 中国石油集团西部钻探工程有限公司 | Wellhead tee joint connecting device special for underbanlanced drilling |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2009268461B2 (en) * | 2008-07-09 | 2015-04-09 | Weatherford Technology Holdings, Llc | Apparatus and method for data transmission from a rotating control device |
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2012
- 2012-07-02 CN CN201210223401.4A patent/CN102704862B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7686076B2 (en) * | 2005-02-22 | 2010-03-30 | Weatherford/Lamb, Inc. | Expandable tubulars for use in a wellbore |
| CN200955370Y (en) * | 2006-07-12 | 2007-10-03 | 新疆石油管理局钻井工艺研究院 | Rotary control head for drilling well |
| CN201068733Y (en) * | 2007-07-05 | 2008-06-04 | 辽河石油勘探局 | Aerated drilling safety gas injection device |
| CN101525992A (en) * | 2009-01-22 | 2009-09-09 | 中国石油集团川庆钻探工程有限公司钻采工艺技术研究院 | Closed cuttings storage device for sulfur-bearing formation underbalanced drilling |
| CN201627567U (en) * | 2010-04-01 | 2010-11-10 | 洪泽东俊机械有限公司 | Vertical choke-kill manifold for oceanic use |
| CN101892824A (en) * | 2010-07-22 | 2010-11-24 | 中国石油天然气集团公司 | Combined multi-stage pressure control method and device |
| CN202659200U (en) * | 2012-07-02 | 2013-01-09 | 中国石油集团西部钻探工程有限公司 | Wellhead tee joint connecting device special for underbanlanced drilling |
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| Publication number | Publication date |
|---|---|
| CN102704862A (en) | 2012-10-03 |
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Address after: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Applicant after: CNPC Xibu Drilling Engineering Company Limited Address before: 834000 the Xinjiang Uygur Autonomous Region Karamay Hongyan Road No. 80 Western Drilling Engineering Technology Research Institute of science and technology management department Applicant before: CNPC Xibu Drilling Engineering Company Limited |
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