CN201306140Y - Valve type float valve - Google Patents
Valve type float valve Download PDFInfo
- Publication number
- CN201306140Y CN201306140Y CNU2008203025744U CN200820302574U CN201306140Y CN 201306140 Y CN201306140 Y CN 201306140Y CN U2008203025744 U CNU2008203025744 U CN U2008203025744U CN 200820302574 U CN200820302574 U CN 200820302574U CN 201306140 Y CN201306140 Y CN 201306140Y
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- valve
- float valve
- joint
- float
- base
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- Expired - Fee Related
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Abstract
The utility model relates to a valve type float valve which comprises a float valve joint and a float valve, wherein the float valve joint comprises an upper joint and a lower joint; the float valve comprises a jack screw, a valve seat, a valve and a torsional spring; the float valve is arranged in the float valve joint; the inner wall of the float valve joint is provided with an inner convex slope; the lower end of the valve seat is clamped on the inner convex slope; the valve seat is provided with the jack screw; the jack screw is arranged in the float valve joint through screw threads and can prop against the valve seat; the valve is hinged on the valve seat; one end of the torsional spring is arranged on the valve, and the other end of the torsional spring is arranged on the valve seat; and the torsional spring makes the valve can close the valve seat. The utility model has reasonable and compact structure, effectively prevents the inverse flow of drilling fluid, rock debris and high-pressure oil gas flow through a drilling tool, truly realizes underbalanced operations of the overall process, has simple operation procedure, convenient use and low cost, is safe and reliable, and is suitable for needs of the underbalanced drilling process.
Description
One, technical field
The utility model relates to blowout prevention field of tool in the down-hole of under balance pressure drilling, is a kind of shutter-type float valve.
Two, background technology
Conventional drilling is generally the overbalance drilling well, and when implementing heavy sizing kill-job trip-out, drilling fluid, landwaste and oil gas are difficult to by refluxing in the drilling tool.When implementing under-balance drilling operation, if the situation of drilling rod blowout prevention instrument is not installed when making a trip or making up a joint operation on drilling tool, and without the heavy sizing kill-job, the drilling tool inner fluid will flow out box cupling on the drilling tool, slightly can make the well head operation very inconvenient, weight person can cause well control out of control, cause serious consequence, if but when implementing under balance pressure drilling, adopt the heavy sizing kill-job to pull out of hole, heavy sizing has just killed the stratum so, do not reach underbalance purpose, overall process under-balance has just lost meaning so.
Three, summary of the invention
The utility model provides a kind of shutter-type float valve, and it can solve the prior art defective that drilling fluid, landwaste and high-pressure oil gas fluid capacitance reflux in easily by drilling tool in the underbalance operation effectively.
The technical solution of the utility model realizes by following measure: a kind of shutter-type float valve, it comprises float valve joint and float valve, the float valve joint divides top connection and lower contact, float valve comprises jackscrew, valve base, valve and torsion spring, float valve places in the float valve joint, interior convex inclined plane is arranged on the float valve inner nosepiece wall, the lower end of valve base is stuck on the interior convex inclined plane, jackscrew is arranged on valve base, jackscrew is installed in the float valve joint by screw thread and can withstands valve base, is hinged with valve on valve base, and an end of torsion spring is installed on the valve, the other end of torsion spring is installed on the valve base, and torsion spring makes the closed firmly valve base of valve energy.
Be further optimization and/or improvements below to above-mentioned utility model technical scheme:
Between above-mentioned jackscrew and the valve base joint ring is arranged.
Between above-mentioned valve base and the float valve joint sealing ring is arranged.
Between above-mentioned valve base and the valve sealing ring is arranged.
Above-mentioned top connection is a box.
Above-mentioned lower contact is box or pin thread.
The utility model reasonable and compact in structure, prevented that effectively drilling fluid, landwaste and high-pressure oil gas stream are by refluxing in the drilling tool, truly realized the overall process under-balance operation, and operation sequence is simple, easy-to-use, cost is low, safe and reliable, often be fit to the needs of under balance pressure drilling technology.
Four, description of drawings
Fig. 1 looks the half section structural representation for the utility model master.
Coding among the figure is respectively: 1 is the float valve joint, and 2 is jackscrew, and 3 is joint ring, and 4 is valve base, and 5 is sealing ring, and 6 is interior convex inclined plane, and 7 is torsion spring, and 8 is valve.
Five, 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.
Below in conjunction with embodiment and accompanying drawing the utility model is further described: as shown in Figure 1, this shutter-type float valve comprises float valve joint 1 and float valve, top connection and lower contact are arranged on the float valve joint, float valve comprises jackscrew 2, valve base 4, valve 8 and torsion spring 7, valve base 4 is arranged in float valve joint 1, convex inclined plane 6 on float valve joint 1 inwall, having, the lower end of valve base 4 is stuck on the interior convex inclined plane 6, jackscrew 2 is arranged on valve base 4, jackscrew 2 is installed in the float valve joint 1 by screw thread and can withstands valve base 4, on valve base 4, be hinged with valve 8, one end of torsion spring 7 is installed on the valve 8, the other end of torsion spring 7 is installed on the valve base 4, and torsion spring 7 makes valve 8 closure live valve base 4.
Can according to actual needs above-mentioned shutter-type float valve be made further optimization and/or improvements:
As shown in Figure 1, realize good sealing between jackscrew 2 and the valve base 4, between jackscrew 2 and valve base 4, joint ring 3 is arranged in order to make.
As shown in Figure 1, realize good sealing between valve base 4 and the float valve joint brain, between valve base 4 and float valve joint 1, sealing ring 5 is arranged in order to make.
As shown in Figure 1, realize good sealing between valve base 4 and the valve 8, between valve base 4 and valve 8, sealing ring 5 is arranged in order to make.
In order to increase the applicability of float valve joint, the top connection of float valve joint can be adopted box, and following the connecing of float valve joint can be adopted box or pin thread.
Above technical characterictic has constituted most preferred embodiment of the present utility model, 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.
Use of the present utility model: when the drilling fluid normal circulation, valve 8 is opened fully, and drilling fluid passes through smoothly; When drilling fluid stops circulation time, valve 8 is closed under the effect of torsion spring 7 automatically, has prevented the backflow of landwaste, drilling fluid and hydraulic oil air-flow.
Claims (10)
- [claim 1] 1, a kind of shutter-type float valve, it is characterized in that comprising float valve joint and float valve, the float valve joint divides top connection and lower contact, float valve comprises jackscrew, valve base, valve and torsion spring, float valve places in the float valve joint, interior convex inclined plane is arranged on the float valve inner nosepiece wall, the lower end of valve base is stuck on the interior convex inclined plane, jackscrew is arranged on valve base, jackscrew is installed in the float valve joint by screw thread and can withstands valve base, is hinged with valve on valve base, and an end of torsion spring is installed on the valve, the other end of torsion spring is installed on the valve base, and torsion spring makes the closed firmly valve base of valve energy.
- [claim 2] 2, according to the described shutter-type float valve of claim 1, it is characterized in that between jackscrew and the valve base joint ring being arranged.
- [claim 3] 3, according to claim 1 or 2 described shutter-type float valves, it is characterized in that between valve base and the float valve joint sealing ring being arranged.
- [claim 4] 4, according to claim 1 or 2 described shutter-type float valves, it is characterized in that between valve base and the valve sealing ring being arranged.
- [claim 5] 5, according to the described shutter-type float valve of claim 3, it is characterized in that between valve base and the valve sealing ring being arranged.
- [claim 6] 6, according to claim 1 or 2 described shutter-type float valves, it is characterized in that top connection is a box.
- [claim 7] 7, according to the described shutter-type float valve of claim 3, it is characterized in that top connection is a box.
- [claim 8] 8, according to the described shutter-type float valve of claim 4, it is characterized in that top connection is a box.
- [claim 9] 9, according to the described shutter-type float valve of claim 5, it is characterized in that top connection is a box.
- [claim 10] 10, according to the described shutter-type float valve of claim 9, it is characterized in that lower contact is box or pin thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203025744U CN201306140Y (en) | 2008-10-29 | 2008-10-29 | Valve type float valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203025744U CN201306140Y (en) | 2008-10-29 | 2008-10-29 | Valve type float valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201306140Y true CN201306140Y (en) | 2009-09-09 |
Family
ID=41098607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203025744U Expired - Fee Related CN201306140Y (en) | 2008-10-29 | 2008-10-29 | Valve type float valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201306140Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606108A (en) * | 2012-04-01 | 2012-07-25 | 中国石油集团西部钻探工程有限公司 | Pitching pressure-out opening oil tube constant-pressure floating valve |
| CN102606109A (en) * | 2012-04-01 | 2012-07-25 | 中国石油集团西部钻探工程有限公司 | Valve-type oil tube floating valve device |
| CN105298443A (en) * | 2015-12-04 | 2016-02-03 | 中国石油集团西部钻探工程有限公司 | Oil pipe float valve and blowout prevention, gas lift and fracture combined operation method for underbalance well completion oil pipe descending |
| CN105370243A (en) * | 2015-12-04 | 2016-03-02 | 中国石油集团西部钻探工程有限公司 | Multifunctional oil pipe float collar |
| CN105986777A (en) * | 2015-01-27 | 2016-10-05 | 中国石油天然气股份有限公司 | Underground well sealing device |
-
2008
- 2008-10-29 CN CNU2008203025744U patent/CN201306140Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606108A (en) * | 2012-04-01 | 2012-07-25 | 中国石油集团西部钻探工程有限公司 | Pitching pressure-out opening oil tube constant-pressure floating valve |
| CN102606109A (en) * | 2012-04-01 | 2012-07-25 | 中国石油集团西部钻探工程有限公司 | Valve-type oil tube floating valve device |
| CN102606108B (en) * | 2012-04-01 | 2015-07-08 | 中国石油集团西部钻探工程有限公司 | Pitching pressure-out opening oil tube constant-pressure floating valve |
| CN102606109B (en) * | 2012-04-01 | 2015-09-23 | 中国石油集团西部钻探工程有限公司 | Shutter-type oil pipe float valve device |
| CN105986777A (en) * | 2015-01-27 | 2016-10-05 | 中国石油天然气股份有限公司 | Underground well sealing device |
| CN105298443A (en) * | 2015-12-04 | 2016-02-03 | 中国石油集团西部钻探工程有限公司 | Oil pipe float valve and blowout prevention, gas lift and fracture combined operation method for underbalance well completion oil pipe descending |
| CN105370243A (en) * | 2015-12-04 | 2016-03-02 | 中国石油集团西部钻探工程有限公司 | Multifunctional oil pipe float collar |
| CN105298443B (en) * | 2015-12-04 | 2018-10-09 | 中国石油集团西部钻探工程有限公司 | Oil pipe blowout, gaslift and pressure break connection make method under oil pipe float valve and insufficient balance well completion |
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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: 20090909 Termination date: 20161029 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |