CN202659200U - Wellhead tee joint connecting device special for underbanlanced drilling - Google Patents
Wellhead tee joint connecting device special for underbanlanced drilling Download PDFInfo
- Publication number
- CN202659200U CN202659200U CN 201220314113 CN201220314113U CN202659200U CN 202659200 U CN202659200 U CN 202659200U CN 201220314113 CN201220314113 CN 201220314113 CN 201220314113 U CN201220314113 U CN 201220314113U CN 202659200 U CN202659200 U CN 202659200U
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- tee joint
- connectivity port
- wellhead
- wellhead tee
- drilling
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Abstract
The utility model relates to the technical field of underbalanced drilling pipeline connecting devices, in particular to a wellhead tee joint connecting device special for underbalanced drilling. The wellhead tee joint connecting device comprises a wellhead tee joint; a first channel is arranged in the wellhead tee joint; the left and the right of the first channel are communicated with each other; a second channel which is communicated with the first channel is arranged below the first channel; the left end and the right end of the first channel are respectively provided with a left connecting end opening and a right connecting end opening; and annular sealed mounting grooves are respectively formed in the left end and the right end of the wellhead tee joint and on the outer side of the left connecting end opening and the outer side of the right connecting end opening. The wellhead tee joint connecting device is reasonable and compact in structure and convenient to use; a plurality of pipelines are connected with one another through the wellhead tee joint; during underground underbalanced operation, drilling fluid flows through a throttle manifold special for the underbalanced operation, throttling, circulating and pressure-controlling effects on the drilling fluid are achieved, a drilling process is optimized, and the safety of drilling operation is improved.
Description
Technical field
The utility model 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-purpose choke manifold of underbalance is connected with the internal control pipeline, controls the route of flowing through of mineshaft annulus drilling fluid by the switch of liquid-operated flat valve; This connected mode has increased the risk of under-balance drilling operation greatly, has certain potential safety hazard.
Summary of the invention
The utility model provides a kind of under balance pressure drilling Special wellhead three-way connection device, 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.
The technical solution of the utility model realizes by following measures: a kind of under balance pressure drilling Special wellhead three-way connection device comprises wellhead tee joint; The first passage that communicates about the inside of wellhead tee joint has has the second channel that communicates with first passage below first passage; The left end of first passage and right-hand member have respectively left connectivity port and right connectivity port, and the left end of the wellhead tee joint outside the outside, left connectivity port and right connectivity port and right-hand member have respectively the sealing mounting groove of annular; Circle distribution has at least three threaded mounting holes respectively on the wellhead tee joint in the sealing mounting groove outside; In the lower end of second channel lower connectivity port is arranged, there is the sealing mounting groove of annular the lower end of the wellhead tee joint outside lower connectivity port, and circle distribution has at least three threaded mounting holes on the wellhead tee joint in the sealing mounting groove outside.
The below is the further optimization and/or improvements to above-mentioned utility model technical scheme:
Above-mentioned left connectivity port can be installed with rotation 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 liquid-operated flat valve in lower connectivity port; In the sealing mounting groove, be installed with respectively sealing ring.
Above-mentioned left connectivity port can be fixed together by flange and attachment screw with rotation control joint; 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.
The utility model reasonable and compact in structure, easy to use; By wellhead tee joint multi-pipeline is connected; Realize simultaneously when the underbalance operation of down-hole, make the route of flowing through of drilling fluid by the special-purpose choke manifold of underbalance, realize drilling fluid is played the effect of throttling, circulation and pressure control; Optimize drilling technology, the safety that has improved drillng operation.
Description of drawings
Accompanying drawing 2 is the left TV structure schematic diagram of wellhead tee joint in the utility model.
Coding in the 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 are the sealing mounting groove, and 9 are rotation control joint, 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.
The specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
In the utility model, for convenience of description, the description of the relative position relation of each parts all is that the Butut mode according to Figure of description is described, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
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 that communicates about the inside of wellhead tee joint 1 has 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 respectively left connectivity port 4 and right connectivity port 5, the sealing mounting groove 8 that annular is arranged respectively at left end and the right-hand member of the wellhead tee joint 1 in 4 outsides, left connectivity port and 5 outsides, right connectivity port; Circle distribution has at least three threaded mounting holes 6 respectively on the wellhead tee joint 1 in sealing mounting groove 8 outsides; Lower connectivity port 7 is arranged in the lower end of second channel 3, the sealing mounting groove 8 of annular is arranged in the lower end of the wellhead tee joint 1 in 7 outsides, lower connectivity port, circle distribution has at least three threaded mounting holes on the wellhead tee joint 1 in sealing mounting groove 8 outsides.Wellhead tee joint 1 is convenient to the installation between the multi-pipeline.
Can according to actual needs, above-mentioned under balance pressure drilling Special wellhead three-way connection device be made further optimization and/or improvements:
As shown in Figure 1, be installed with rotation 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 liquid-operated flat valve 11 in lower connectivity port 7; At the sealing mounting groove 8 interior sealing rings 14 that are installed with respectively.By wellhead tee joint 1 rotation control joint 9, high pressure line 10 and liquid-operated flat valve 11 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 by mineshaft annulus, rotation control joint 9, wellhead tee joint 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.
As shown in Figure 1, left connectivity port 4 is fixed together by flange 12 and attachment screw 13 with rotation control joint 9; 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.Being convenient to like this rotation control joint 9, high pressure line 10 and liquid-operated flat valve 11 mounts and dismounts respectively and between the wellhead tee joint 1.
As shown in Figure 3, as required, wellhead tee joint 1 is rectangular.
Above technical characterictic has consisted of most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, satisfies the demand of different situations.
The installation of the utility model most preferred embodiment and use procedure: at first, rotation control joint 9, high pressure line 10 and liquid-operated flat valve 11 are installed in respectively on left connectivity port 4, right connectivity port 5 and the lower connectivity port 7 of wellhead tee joint 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 manually gate valve and liquid-operated flat valve on the internal control pipeline, drilling fluid is circulated back in the slurry tank by mineshaft annulus, rotation control joint 9, wellhead tee joint 1, high pressure line 10, the special-purpose choke manifold of underbalance, liquid-gas separator and vibrosieve successively; When non-underbalance operation, such as operations such as closing well, kill-jobs, then open manually gate valve on the internal control pipeline, close liquid-operated flat valve 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 by mineshaft annulus, drilling spool, internal control pipeline, drilling team's choke manifold, vibrosieve successively.
Claims (4)
1. a under balance pressure drilling Special wellhead three-way connection device is characterized in that comprising wellhead tee joint; The first passage that communicates about the inside of wellhead tee joint has has the second channel that communicates with first passage below first passage; The left end of first passage and right-hand member have respectively left connectivity port and right connectivity port, and the left end of the wellhead tee joint outside the outside, left connectivity port and right connectivity port and right-hand member have respectively the sealing mounting groove of annular; Circle distribution has at least three threaded mounting holes respectively on the wellhead tee joint in the sealing mounting groove outside; In the lower end of second channel lower connectivity port is arranged, there is the sealing mounting groove of annular the lower end of the wellhead tee joint outside lower connectivity port, and circle distribution has at least three threaded mounting holes on the wellhead tee joint in the sealing mounting groove outside.
2. under balance pressure drilling Special wellhead three-way connection device according to claim 1 is characterized in that left connectivity port can be installed with rotation 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 liquid-operated flat valve in lower connectivity port; In the sealing mounting groove, be installed with respectively sealing ring.
3. under balance pressure drilling Special wellhead three-way connection device according to claim 2 is characterized in that left connectivity port and rotation control joint are 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.
4. according to claim 1 and 2 or 3 described under balance pressure drilling Special wellhead three-way connection devices, it is characterized in that wellhead tee joint is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314113 CN202659200U (en) | 2012-07-02 | 2012-07-02 | Wellhead tee joint connecting device special for underbanlanced drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314113 CN202659200U (en) | 2012-07-02 | 2012-07-02 | Wellhead tee joint connecting device special for underbanlanced drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659200U true CN202659200U (en) | 2013-01-09 |
Family
ID=47454110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220314113 Withdrawn - After Issue CN202659200U (en) | 2012-07-02 | 2012-07-02 | Wellhead tee joint connecting device special for underbanlanced drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202659200U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704862A (en) * | 2012-07-02 | 2012-10-03 | 中国石油集团西部钻探工程有限公司 | Special wellhead tee connecting device for underbalanced drilling |
-
2012
- 2012-07-02 CN CN 201220314113 patent/CN202659200U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704862A (en) * | 2012-07-02 | 2012-10-03 | 中国石油集团西部钻探工程有限公司 | Special wellhead tee connecting device for underbalanced drilling |
| CN102704862B (en) * | 2012-07-02 | 2015-05-13 | 中国石油集团西部钻探工程有限公司 | Special wellhead tee connecting device for underbalanced drilling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130109 Effective date of abandoning: 20150513 |
|
| RGAV | Abandon patent right to avoid regrant |