CN205532424U - Core with exempting from bowling instrument - Google Patents
Core with exempting from bowling instrument Download PDFInfo
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- CN205532424U CN205532424U CN201620128747.XU CN201620128747U CN205532424U CN 205532424 U CN205532424 U CN 205532424U CN 201620128747 U CN201620128747 U CN 201620128747U CN 205532424 U CN205532424 U CN 205532424U
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Abstract
The utility model relates to a core with exempting from bowling instrument in the oil and natural gas drilling operation instrument field. It is including dividing water swivel 7 and set up the bleeder 6 on minute water swivel 7, connects hollow body 3 in the one end of minute water swivel 7, sets up piston 1 and spring 2 in the body 3, and 3 bottoms of body are connected the flow and are set upright or straight dish 4, and dish 4 was set upright or straight to the flow periphery is equipped with metering orifice 5, and wherein piston 1 and the sealed cooperation of body 3 open -top, spring 2 lie in piston 1 and set upright or straight with the flow and coil between 4. The utility model has the advantages of: firstly, instrument simple structure, when inside spring became invalid, it was simple to change spare part, secondly, safe and reliable does not worry that it drops into steel ball production potential safety hazard to dismantle the drilling rod.
Description
Technical field
This utility model is used when relating to underground work in oil and gas well drilling power tool field exempts from ball pitching tool, belongs to a kind of drilling and coring delivery instrument.
Background technology
During hard formation coring operation, carrying out circulation of drilling fluid before coring operation, drilling fluid is circulated by coring inner drum；After loop ends, put into steel ball, change drilling fluid runner, make drilling liquid flow through return connector and inner/outer tube annular space of coring.Traditional stuff is will to carry on drilling tool, sit extension, dismantle drilling rod, puts into steel ball from drilling rod.But so pitching has the biggest shortcoming, especially can encounter following problem at gas well: 1, owing to there being check-valves inside drilling tool, can break check-valves, cause has channeling during steel ball drop；2, during steel ball drop, drilling tool inwall can be collided, produce spark and set off an explosion.
Utility model content
The purpose of this utility model is to solve the potential safety hazard that in gas well, pitching produces, for offer a kind of simple in construction, safe and reliable the coring with exempting from ball pitching tool of coring in gas well.
To achieve these goals, this utility model takes techniques below scheme:
One is cored with exempting from ball pitching tool, including return connector 7 and the bleeder 6 being arranged on return connector 7, the body 3 of hollow is connected in one end of return connector 7, piston 1 and spring 2 are set in body 3, connection traffic righting disc 4 bottom body 3, the periphery of flow righting disc 4 is provided with metering orifice 5, and wherein piston 1 seals with body 3 open top and coordinates, and spring 2 is between piston 1 and flow righting disc 4.
Such scheme farther includes:
Described body 3 assumes a " convex " shape structure, and its ledge is connected with return connector 7 female thread.
The tapered structure of piston 1, seals the conical surface that body 3 open top is same gradient of cooperation therewith.
Bleeder 6 and metering orifice 5 quantity of flow righting disc 4 periphery on return connector 7 are 3-8；Flow righting disc 4 is connected with body 3 by screw thread.
Working mechanism of the present utility model: spring and piston are assembled in the body, is connected to core barrel inner core top again by body after having assembled.Before coring, huge discharge circulates, and ball pitching tool, spring-compressed are exempted from drilling fluid impact, and drilling fluid flows into from piston mouth, by the metering orifice on flow righting disc, passes through core barrel inner core and drill bit；When coring, using small displacement instead, when ball pitching tool is exempted from drilling fluid impact, spring does not compresses, and drilling fluid, without flow through exempting from ball pitching tool, only flows through the bleeder of return connector, then the annular space between core-extracting toolsinternal barrel and urceolus.
The utility model has the advantage of: one is that tool construction is simple, when contained spring lost efficacy, changes parts simple；Two is safe and reliable, does not worries that dismantling drilling rod puts into steel ball generation potential safety hazard.
Accompanying drawing explanation
Fig. 1 is that one is cored with exempting from ball pitching tool assembling schematic diagram；
Fig. 2 is body part structural representation in Fig. 1；
In figure: 1, piston, 2, spring, 3, body, 4, flow righting disc, 5, metering orifice, 6, bleeder, 7, return connector.
Detailed description of the invention
Referring to the drawings 1, one is cored with exempting from ball pitching tool, including return connector 7 and the bleeder 6 being arranged on return connector 7, the body 3 of hollow is connected in one end of return connector 7, piston 1 and spring 2 are set in body 3, connection traffic righting disc 4 bottom body 3, the periphery of flow righting disc 4 is provided with metering orifice 5, wherein piston 1 seals with body 3 open top and coordinates, and spring 2 is between piston 1 and flow righting disc 4.
Referring to the drawings 2, described body 3 assumes a " convex " shape structure, and its ledge is connected with return connector 7 female thread.The tapered structure of piston 1, seals the conical surface that body 3 open top is same gradient of cooperation therewith.Bleeder 6 and metering orifice 5 quantity of flow righting disc 4 periphery on return connector 7 are 3-8；Flow righting disc 4 is connected with body 3 by screw thread.
Of the present utility model coring with exempting from ball pitching tool, before coring, huge discharge circulates, and the piston 1 of ball pitching tool is exempted from drilling fluid impact, and spring 2 compresses, and drilling fluid flows into from piston mouth, by the metering orifice 5 on flow righting disc 4, passes through core barrel inner core and drill bit；When coring, use small displacement instead, when the piston 1 of ball pitching tool is exempted from drilling fluid impact, spring 2 does not compresses, and drilling fluid can not flow through exempts from ball pitching tool, can only flow through the bleeder 6 of the return connector 7 of coring tool, annular space between core-extracting toolsinternal barrel and urceolus again, then coring tool starts to core.
Claims (4)
1. core with exempting from ball pitching tool for one kind, including return connector (7) and the bleeder (6) that is arranged on return connector (7), it is characterized in that: connect the body (3) of hollow in one end of return connector (7), piston (1) and spring (2) are set in body (3), body (3) bottom connection traffic righting disc (4), the periphery of flow righting disc (4) is provided with metering orifice (5), wherein piston (1) seals with body (3) open top and coordinates, and spring (2) is positioned between piston (1) and flow righting disc (4).
The most according to claim 1 coring with exempting from ball pitching tool, it is characterized in that: described body (3) assumes a " convex " shape structure, its ledge is connected with return connector (7) female thread.
The most according to claim 1 and 2 core with exempting from ball pitching tool, it is characterized in that: piston (1) tapered structure, seal the conical surface that body (3) open top is unified gradient of cooperation therewith.
The most according to claim 3 core with exempting from ball pitching tool, it is characterized in that: bleeder (6) and metering orifice (5) quantity of flow righting disc (4) periphery on return connector (7) are 3-8；Flow righting disc (4) is connected with body (3) by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620128747.XU CN205532424U (en) | 2016-02-19 | 2016-02-19 | Core with exempting from bowling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620128747.XU CN205532424U (en) | 2016-02-19 | 2016-02-19 | Core with exempting from bowling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205532424U true CN205532424U (en) | 2016-08-31 |
Family
ID=56778716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620128747.XU Active CN205532424U (en) | 2016-02-19 | 2016-02-19 | Core with exempting from bowling instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205532424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100573A (en) * | 2016-02-19 | 2017-08-29 | 中石化石油工程技术服务有限公司 | One kind is cored with exempting from ball pitching tool |
-
2016
- 2016-02-19 CN CN201620128747.XU patent/CN205532424U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100573A (en) * | 2016-02-19 | 2017-08-29 | 中石化石油工程技术服务有限公司 | One kind is cored with exempting from ball pitching tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |