CN2140954Y - Multi-functional joint - Google Patents
Multi-functional joint Download PDFInfo
- Publication number
- CN2140954Y CN2140954Y CN 92234309 CN92234309U CN2140954Y CN 2140954 Y CN2140954 Y CN 2140954Y CN 92234309 CN92234309 CN 92234309 CN 92234309 U CN92234309 U CN 92234309U CN 2140954 Y CN2140954 Y CN 2140954Y
- Authority
- CN
- China
- Prior art keywords
- valve
- drilling
- cleaner
- joint
- hollow piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Earth Drilling (AREA)
Abstract
The utility model relates to a multifunctional direction protective joint which integrates a single flow valve, a cleaner, and a single anti-spraying joint in the well drilling of an oilfield, and belongs to one of auxiliary tools for well drilling. When drilling fluid circulates, the utility model depends on the pressure of a well opening to push a hollow piston 3 to overcome spring force to downwards move a segment of distance, a circulation hole 7 on the lower part of the hollow piston is exposed, and the drilling fluid on the upper part favorably flows through the circulation hole 7 and a cleaner 10 to enter a drilling tool on the lower part. At the moment, the passage of fluid flow can not be blocked by a valve 8. After the drilling fluid is stopped from circulating, the circulation hole 7 is closed by the valve 8 under the action of the spring force, the drilling fluid remained in a square drilling rod can no longer flow out, and at the moment, the drilling fluid on the lower part can also not flow back into the square drilling rod through the valve 8.
Description
The utility model is in a kind of oilfield drilling.Collection single current valve, cleaner, blowout prevention drilling fluid joint and the kelly bar screw thread protection joint that makes up a joint is protected joint in the multi-functional side of one.Belong to a kind of of drilling well aid.
In oilfield drilling, damage valuable kelly bar screw thread for shackle on often preventing.Often protection joint of employing reduces the dismounting of screw thread, and the inner no any element of joint, except that protection kelly bar screw thread, no any other function.
The purpose of this utility model is that joint inside is protected by the side makes and have the single current valve, the drilling tool cleaner, and the multifunction conjunction of the blowout prevention drilling fluid effect that makes up a joint, and eliminate the circulation resistance of single current valve, make its structure more reasonable.
The utility model can be achieved through the following technical solutions, and spring 4 is packed in the top connection 1, and hollow piston 3 was gone here and there the inwall of spring 4 and top connection 1, and the lower end screw thread is connected with valve 8.This moment, sealing ring 2,6 made the inner and spring 4 places sealing of joint, and the space at spring 4 places is in communication with the outside by plug hole 5.The bottom of hollow piston 3 is useful on the circulation port 7 that is communicated with top and cleaner annular space 11.The following screwed connection cleaner 10 of valve, lower contact 9 screw threads are connected with top connection 1, then form between cleaner 10 and the lower contact 9 and deposit the annular space 11 that leaches foreign material, and protect joint top screw thread and be connected with kelly bar the side, and lower thread is connected with drilling tool.
The utility model has following effect compared to existing technology: a joint has 4 kinds of functions.Owing to circulation port 7 and valve 8 are to promote hollow piston by the inside and outside pressure reduction of well head drilling tool to open,, circulation pressure drop and valve erosion have been eliminated so the circulation time valve can not stop drilling fluid to pass through.The cleaner inspection is convenient.
Sectional drawing when Fig. 1 left side be multi-functional side guarantor joint not circulating fluid.
Sectional drawing when Fig. 1 right side is circulating fluid.
Below in conjunction with accompanying drawing the utility model is described further:
As shown in Figure 1: spring 4 is loaded in the top connection 1, and hollow piston 3 was gone here and there the internal diameter of spring 4 and top connection 1, and makes hollow piston 3 inside and outside seal by last sealing ring 2 on the hollow piston 3 and lower seal 6.Spring 4 place's annular spaces are in communication with the outside by plug hole 5, and piston 3 bottoms have a plurality of circulation ports 7 to be used to make drilling fluid to flow to cleaner annular space 11 in hollow piston 3.Hollow piston 3 lower ends are connected with valve 8 by screw thread, and the cleaner 10 that valve 8 bottoms are formed by screw thread and many apertures is connected.Deposit the annular space 11 that leaches foreign material and leave between cleaner 10 and the lower contact 9.Lower contact 9 links to each other with top connection 1 by screw thread.The upper end screw thread of whole joint is used for connection side's drilling rod.
When circulating fluid: under pump function, hollow piston 3 will compress spring 4 and move down a segment distance, the circulation port 7 of hollow piston 3 bottoms will move down thereupon this moment, and internal piston is communicated with cleaner annular space 11, drilling fluid is passed through smoothly, this moment, valve 8 moved the area that is communicated with that dwindles hole 7 and annular space 11 on moving down no longer with hollow piston 3, thereby can not increase the erosion of circulation pressure drop and valve.At this moment, drilling fluid will enter lower drilling tool after will filtering by cleaner 10.
When stopping circulating fluid, valve 8 will form sealing with the top connection 1 lower end conical surface under the elastic force effect of spring 4, and residual drilling fluid no longer flows out in the kelly bar and make, and has played the effect of the blowout prevention drilling fluid that makes up a joint.The interior drilling fluid of drilling tool this moment also can't flow to the effect that kelly bar has played the single current valve by hole 7 again, checks that as need cleaner only needs to go up the lower contact thread and dismantles.
Claims (3)
1, use in a kind of oilfield drilling, have the single current valve, the multi-functional side of the cleaner and the blowout prevention drilling fluid effect that makes up a joint protects joint, it is by top connection 1, spring 4, hollow piston 3, valve 8, cleaner 10 and lower contact 9 are formed, it is characterized in that: hollow piston 3 outside with top connection 1 inner wall sealings, slide and support by spring 4, circulation port 7 is arranged at the bottom, the lower end screw thread is connected with valve 8, forms the single current valve.Cleaner 10 upper ends are connected with valve 8, and and 9 of lower contacts leave annular space 11 and be used to deposit and leach foreign material.Top connection 1 is threaded with lower contact 9.
2, multi-functional side as claimed in claim 1 protects joint.It is characterized in that: hollow piston 3 move down distance, greater than the length of circulation port 7.
3, multi-functional side as claimed in claim 1 protects joint.It is characterized in that: elastic force is greater than the pressure of fluid column in the kelly bar to valve 8 during spring 4 terminations of pumping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92234309 CN2140954Y (en) | 1992-09-22 | 1992-09-22 | Multi-functional joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92234309 CN2140954Y (en) | 1992-09-22 | 1992-09-22 | Multi-functional joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2140954Y true CN2140954Y (en) | 1993-08-25 |
Family
ID=33776415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92234309 Expired - Fee Related CN2140954Y (en) | 1992-09-22 | 1992-09-22 | Multi-functional joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2140954Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939028A (en) * | 2013-01-22 | 2014-07-23 | 成都大漠石油机械有限公司 | Drill stem connection device capable of preventing jet of mud |
| CN106885082A (en) * | 2015-12-15 | 2017-06-23 | 重庆金宇恒科技有限公司 | A kind of fluid pipeline being conveniently replaceable |
-
1992
- 1992-09-22 CN CN 92234309 patent/CN2140954Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939028A (en) * | 2013-01-22 | 2014-07-23 | 成都大漠石油机械有限公司 | Drill stem connection device capable of preventing jet of mud |
| CN106885082A (en) * | 2015-12-15 | 2017-06-23 | 重庆金宇恒科技有限公司 | A kind of fluid pipeline being conveniently replaceable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |