CN203626675U - Drilling coring pitch joint - Google Patents
Drilling coring pitch joint Download PDFInfo
- Publication number
- CN203626675U CN203626675U CN201320762219.6U CN201320762219U CN203626675U CN 203626675 U CN203626675 U CN 203626675U CN 201320762219 U CN201320762219 U CN 201320762219U CN 203626675 U CN203626675 U CN 203626675U
- Authority
- CN
- China
- Prior art keywords
- steel ball
- ball seat
- drilling
- coring
- joint body
- 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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Abstract
The utility model relates to the technical field of petroleum and natural gas drilling coring, in particular to a drilling coring pitch joint. A limiting base is connected to the inner wall of the lower end of a joint body of the drilling coring pitch joint, a steel ball base is arranged on the limiting base, the upper end of the steel ball base is designed to be eccentric, the steel ball base comprises two portions, a circulation steel ball is arranged at the upper end of the steel ball base, the circulation steel ball can fall out of the steel ball base under the effect of centrifugal force, a limiting screw is connected to the side wall of the joint body, and a spring is limited between the joint body and the steel ball base through the limiting screw and the steel ball base. The drilling coring pitch joint achieves the aim that a pump is not required to be stopped before drilling coring, the pitch time is short, working efficiency is high, the structure is simple, and safety is high, and the defects that according to an existing pitch method, the pump needs to be stopped before drilling coring, a drilling tool needs to be disassembled, and the pitch time is long are overcome.
Description
Technical field:
The utility model relates to a kind of oil and gas drilling and coring delivery technical field, particularly a kind of drilling and coring delivery ball injection joint.
Background technology:
The method shutoff coring inner drum passage of existing coring tool application ground pitching, while changing core-drilling, the flow direction of drilling fluid, prevents the direct erosion of drilling fluid to rock core.Although this pitching method is convenient, direct, but must termination of pumping before coring, dismantle drilling tool, the pitching time is long, the complicated coring operation such as particularly core, underbalance is cored, hp-ht well is cored during at well dynamic, owing to being connected to mud motor, underbalance float valve and HTHP control appliance etc. in drilling tool, make the method for ground pitching cannot realize object, thereby seriously hindered further developing of drilling and coring delivery.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of drilling and coring delivery ball injection joint, and this device has been realized not need to termination of pumping before coring, and the pitching time is short, and operating efficiency is high, simple in structure, safe.Having overcome existing pitching method must termination of pumping before coring, dismantle drilling tool, the deficiency that the pitching time is long.
Technical solution adopted in the utility model is: a kind of drilling and coring delivery ball injection joint, comprises joint body; On the inwall of joint body lower end, connect limit base, steel ball seat is installed on limit base, steel ball seat upper end is designed to eccentric shape, steel ball seat is designed to two lobes, steel ball seat upper end is provided with circulating steel ball, circulating steel ball can drop out under the effect of centrifugal force in steel ball seat, on joint body sidewall, connects stop screw, and spring is limited between joint body and steel ball seat by stop screw and steel ball seat.
The beneficial effects of the utility model are: the utility model is owing to having adopted the mode of centrifugal force pitching, thus have not need to termination of pumping before coring function, the pitching time is short, operating efficiency is high, simple in structure, safe.
Accompanying drawing explanation:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
As shown in Figure 1, a kind of drilling and coring delivery ball injection joint, comprises joint body 1; On joint body 1 lower end inwall, connect limit base 4, steel ball seat 6 is installed on limit base 4, steel ball seat 6 upper ends are designed to eccentric shape, steel ball seat 6 is designed to two lobes, steel ball seat 6 upper ends are provided with circulating steel ball 5, circulating steel ball 5 can drop out under the effect of centrifugal force in steel ball seat 6, on joint body 1 sidewall, connects stop screw 2, and spring 3 is limited between joint body 1 and steel ball seat 6 by stop screw 2 and steel ball seat 6.
When use, the utility model upper end connects drilling tool, and lower end connects coring tube, need pitching at the bottom of getting core wash cycles completion time, start rotating disk, in the time that rotary speed reaches a fixed numbers, steel ball seat 6 is opened under the centrifugal action of circulating steel ball 5, and circulating steel ball 5 drops out under the effect of self gravitation and drilling fluid downward pressure from steel ball seat 6, fall into the ball seat of bottom coring tube, play shutoff and get in-core cylinder, change the mobile direction of drilling fluid, prevent that drilling fluid from directly washing away the object of rock core.
Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model is not limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as meet, all within protection domain of the present utility model.
Claims (1)
1. a drilling and coring delivery ball injection joint, comprises joint body (1); It is characterized in that: on the inwall of joint body (1) lower end, connect limit base (4), the upper steel ball seat (6) of installing of limit base (4), steel ball seat (6) upper end is designed to eccentric shape, steel ball seat (6) is designed to two lobes, steel ball seat (6) upper end is provided with circulating steel ball (5), circulating steel ball (5) can drop out under the effect of centrifugal force in steel ball seat (6), on joint body (1) sidewall, connect stop screw (2), spring (3) is limited between joint body (1) and steel ball seat (6) by stop screw (2) and steel ball seat (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762219.6U CN203626675U (en) | 2013-11-26 | 2013-11-26 | Drilling coring pitch joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762219.6U CN203626675U (en) | 2013-11-26 | 2013-11-26 | Drilling coring pitch joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203626675U true CN203626675U (en) | 2014-06-04 |
Family
ID=50813164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320762219.6U Expired - Fee Related CN203626675U (en) | 2013-11-26 | 2013-11-26 | Drilling coring pitch joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203626675U (en) |
-
2013
- 2013-11-26 CN CN201320762219.6U patent/CN203626675U/en not_active Expired - Fee Related
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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: 20140604 Termination date: 20141126 |
|
| EXPY | Termination of patent right or utility model |