CN102704862A - Special wellhead tee connecting device for underbalanced drilling - Google Patents
Special wellhead tee connecting device for underbalanced drilling Download PDFInfo
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- CN102704862A CN102704862A CN2012102234014A CN201210223401A CN102704862A CN 102704862 A CN102704862 A CN 102704862A CN 2012102234014 A CN2012102234014 A CN 2012102234014A CN 201210223401 A CN201210223401 A CN 201210223401A CN 102704862 A CN102704862 A CN 102704862A
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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 the special-purpose well head threeway of a kind of under balance pressure drilling linkage.
Background technology
In under balance pressure drilling process in the past, swivel control head is connected with the flap type that surges, and the special-purpose choke manifold of underbalance is connected with the internal control pipeline, controls the route of flowing through of mineshaft annulus drilling fluid through the switch of the flap type that surges; This connected mode has increased the risk of under-balance drilling operation greatly, has certain potential safety hazard.
Summary of the invention
The invention provides the special-purpose well head threeway of a kind of under balance pressure drilling linkage, overcome the deficiency of above-mentioned prior art, its route of flowing through that can effectively solve existing drilling fluid has increased the risk of under-balance drilling operation, has the problem of certain potential safety hazard.
Technical scheme of the present invention realizes through following measure: the special-purpose well head threeway of a kind of under balance pressure drilling linkage comprises the well head threeway; The first passage that about the inside of well head threeway has, communicates has the second channel that communicates 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 well head threeway outside the outside, left connectivity port and right connectivity port and right-hand member have the sealing mounting groove of annular respectively; Circle distribution has at least three threaded mounting holes respectively in the well head threeway in the sealing mounting groove outside; In the lower end of second channel following connectivity port is arranged, the sealing mounting groove of annular is arranged in the lower end of the well head threeway in the outside, connectivity port down, circle distribution has at least three threaded mounting holes in the well head threeway in the sealing mounting groove outside.
Be to the further optimization of foregoing invention technical scheme below or/and improve:
Above-mentioned left connectivity port can be installed with the Spin Control joint, and right connectivity port is installed with the high pressure line that is connected with the special-purpose choke manifold of underbalance; Be installed with the flap type that surges in following connectivity port; In the sealing mounting groove, be installed with sealing ring respectively.
Above-mentioned left connectivity port and Spin Control joint can be fixed together through flange and attachment screw; Right connectivity port and high pressure line are fixed together through flange and attachment screw; Following connectivity port is fixed together through flange and attachment screw with the flap type that surges.
Above-mentioned well head threeway can be rectangular.
Reasonable and compact in structure of the present invention, easy to use; Through the well head threeway multitube road is connected; When being implemented in down-hole underbalance operation simultaneously, the route of flowing through that makes drilling fluid realizes drilling fluid is played the effect of throttling, circulation and pressure control through the special-purpose choke manifold of underbalance; Optimize drilling technology, the safety that has improved drillng operation.
Description of drawings
Accompanying drawing 1 is looked the sectional structure sketch map for the master of most preferred embodiment of the present invention.
Accompanying drawing 2 is the left TV structure sketch map of well head threeway among the present invention.
Accompanying drawing 3 is the axis of rotation geodesic structure sketch map of well head threeway among the present invention.
Coding in the accompanying drawing is respectively: 1 is the well head threeway, and 2 is first passage, and 3 is second channel, and 4 is left connectivity port; 5 is right connectivity port, and 6 is threaded mounting hole, and 7 are following connectivity port, and 8 are the sealing mounting groove; 9 is the Spin Control joint, and 10 is high pressure line, and 11 are the flap type that surges; 12 is flange, and 13 is attachment screw, and 14 is sealing ring.
The specific embodiment
The present invention does not receive the restriction of following embodiment, can confirm concrete embodiment according to technical scheme of the present invention and actual conditions.
In the present invention, for the ease of describing, the description of the relative position relation of each parts all is to describe according to the Butut mode of Figure of description, as: the position relation of upper and lower, left and right etc. is what to confirm according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the present invention is further described:
Like accompanying drawing 2, shown in 3, the special-purpose well head threeway of this under balance pressure drilling linkage comprises well head threeway 1; The first passage 2 that about the inside of well head threeway 1 has, communicates has the second channel 3 that communicates 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, with right-hand member annular sealing mounting groove 8 are arranged respectively at the left end of the well head threeway 1 in 4 outsides, left connectivity port and 5 outsides, right connectivity port; Circle distribution has at least three threaded mounting holes 6 respectively in the well head threeway 1 in sealing mounting groove 8 outsides; In the lower end of second channel 3 following connectivity port 7 is arranged, the sealing mounting groove 8 of annular is arranged in the lower end of the well head threeway 1 in 7 outsides, connectivity port down, circle distribution has at least three threaded mounting holes in the well head threeway 1 in sealing mounting groove 8 outsides.The installation between the multitube road is convenient in well head threeway 1.
Can according to actual needs the special-purpose well head threeway of above-mentioned under balance pressure drilling linkage be done further to optimize or/and improve:
Shown in accompanying drawing 1, be installed with Spin Control joint 9 in left connectivity port 4, right connectivity port 5 is installed with the high pressure line 10 that is connected with the special-purpose choke manifold of underbalance; Be installed with the flap type 11 that surges in following connectivity port 7; In sealing mounting groove 8, be installed with sealing ring 14 respectively.Through well head threeway 1 Spin Control joint 9, high pressure line 10 and the flap type 11 that surges are connected, the other end of high pressure line 10 is connected with the special-purpose choke manifold of underbalance; Can make drilling fluid when the underbalance operation; Be circulated back in the slurry tank through mineshaft annulus, Spin Control joint 9, well head threeway 1, high pressure line 10, the special-purpose choke manifold of underbalance, liquid-gas separator and vibrosieve successively, realize that drilling fluid plays the effect of throttling, circulation and pressure control; Optimize the enforcement of drilling technology, increased the safety of drillng operation; In addition, sealing ring 14 can increase the sealing that flange 12 connects.
Shown in accompanying drawing 1, left connectivity port 4 is fixed together through flange 12 and attachment screw 13 with Spin Control joint 9; Right connectivity port 5 is fixed together through flange 12 and attachment screw 13 with high pressure line 10; Following connectivity port 7 is fixed together through flange 12 and attachment screw 13 with the flap type 11 that surges.Be convenient to Spin Control joint 9, high pressure line 10 like this and surge flap type 11 respectively and installation and removal between the well head threeway 1.
Shown in accompanying drawing 3, as required, well head threeway 1 is rectangular.
Above technical characterictic has constituted most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The installation of most preferred embodiment of the present invention and use: at first, Spin Control joint 9, high pressure line 10 and the flap type 11 that surges are installed in respectively on left connectivity port 4, right connectivity port 5 and the following connectivity port 7 of well head threeway 1; The other end of high pressure line 10 is installed on the special-purpose choke manifold of underbalance, and drilling team's choke manifold still is connected with the internal control pipeline; When the underbalance operation; Close the manually gate valve and the flap type that surges on the internal control pipeline, drilling fluid is circulated back in the slurry tank through mineshaft annulus, Spin Control joint 9, well head threeway 1, high pressure line 10, the special-purpose choke manifold of underbalance, liquid-gas separator and vibrosieve successively; When non-underbalance operation; Like operations such as closing well, kill-jobs; Then open manually gate valve on the internal control pipeline; Close surge flap type 11 and the high pressure line 10 that is connected with the special-purpose choke manifold of underbalance, make drilling fluid loop back slurry tank through mineshaft annulus, drilling spool, internal control pipeline, drilling team's choke manifold, vibrosieve successively.
Claims (4)
1. the special-purpose well head threeway of a under balance pressure drilling linkage is characterized in that comprising the well head threeway; The first passage that about the inside of well head threeway has, communicates has the second channel that communicates 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 well head threeway outside the outside, left connectivity port and right connectivity port and right-hand member have the sealing mounting groove of annular respectively; Circle distribution has at least three threaded mounting holes respectively in the well head threeway in the sealing mounting groove outside; In the lower end of second channel following connectivity port is arranged, the sealing mounting groove of annular is arranged in the lower end of the well head threeway in the outside, connectivity port down, circle distribution has at least three threaded mounting holes in the well head threeway in the sealing mounting groove outside.
2. the special-purpose well head threeway of under balance pressure drilling according to claim 1 linkage is characterized in that left connectivity port can be installed with the Spin Control joint, and right connectivity port is installed with the high pressure line that is connected with the special-purpose choke manifold of underbalance; Be installed with the flap type that surges in following connectivity port; In the sealing mounting groove, be installed with sealing ring respectively.
3. the special-purpose well head threeway of under balance pressure drilling according to claim 2 linkage is characterized in that left connectivity port and Spin Control joint are fixed together through flange and attachment screw; Right connectivity port and high pressure line are fixed together through flange and attachment screw; Following connectivity port is fixed together through flange and attachment screw with the flap type that surges.
4. according to claim 1 or the special-purpose well head threeway of 2 or 3 described under balance pressure drillings linkage, it is characterized in that the well head threeway 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 true CN102704862A (en) | 2012-10-03 |
| CN102704862B CN102704862B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210223401.4A Active CN102704862B (en) | 2012-07-02 | 2012-07-02 | Special wellhead tee connecting device for underbalanced drilling |
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| Country | Link |
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| CN (1) | CN102704862B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20100008190A1 (en) * | 2008-07-09 | 2010-01-14 | Gray Kevin L | Apparatus and Method for Data Transmission from a Rotating Control Device |
| 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 |
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2012
- 2012-07-02 CN CN201210223401.4A patent/CN102704862B/en active Active
Patent Citations (8)
| 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 |
| US20100008190A1 (en) * | 2008-07-09 | 2010-01-14 | Gray Kevin L | Apparatus and Method for Data Transmission from a Rotating Control 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Publication date |
|---|---|
| CN102704862B (en) | 2015-05-13 |
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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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