CN204024551U - A kind of horizontal well drilling hermetic core taking tool hangs assembly - Google Patents
A kind of horizontal well drilling hermetic core taking tool hangs assembly Download PDFInfo
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- CN204024551U CN204024551U CN201420476866.5U CN201420476866U CN204024551U CN 204024551 U CN204024551 U CN 204024551U CN 201420476866 U CN201420476866 U CN 201420476866U CN 204024551 U CN204024551 U CN 204024551U
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- return connector
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- horizontal well
- piston seat
- bearing
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Abstract
The utility model relates to a kind of horizontal well drilling hermetic core taking tool and hangs assembly, belong to oil drilling coring tool technical field, the utility model is made up of rotating mechanism and crossover sub, rotating mechanism is made up of upper piston, return connector, piston seat, roller bearing, stop sleeve, bearing support, bearing pressure cap, and return connector is in " T " font circulus; Piston seat, in " T " font circulus, is threaded in the central through hole of crossover sub, is provided with roller bearing, stop sleeve, roller bearing, bearing support successively in the annular space between piston seat and return connector, and fixed by bearing pressure cap.The utility model can realize hermetic core taking tool inner core and not rotate with urceolus, reaches higher core recovery and the effect of Sealed efficiency in horizontal well sealing core drilling process.
Description
Technical field
The utility model relates to a kind of horizontal well drilling hermetic core taking tool and hangs assembly, belongs to oil drilling coring tool technical field.
Background technology
Existing normal core-extracting tool comprises inner core and urceolus, and inner core is suspended on urceolus top by hanging assembly, and urceolus connects top drilling tool.This structure can prevent inner core from rotating, and avoid the upper and lower vibration of inner core and swing, when coring, urceolus rotates relative to inner core, completes routine and cores, and this structure cannot meet the demand of sealing core drilling.
And existing straight well hermetic core taking tool is without suspension assembly mechanism, inner/outer tube is together by a threaded connection, when coring for horizontal well, inner core is with urceolus High Rotation Speed, if rock core intensity is low, easily twist off rock core, add the sealing fluid being attached to inner core inwall also to rotate with inner core, produce agitaion, be similar to the formation of whirlpool, torsion is aggravated, causes disintegration of core.If disintegration of core, directly the follow-up rock core of impact enters cylinder, the mill heart occurs and blocks up mood condition, cause the situation that core recovery is low.
CN202914004U discloses a kind of rotation assembly being applicable to pressurized coring tool, comprise axle, one end of axle is provided with whirligig, the other end is provided with releasing pressure automatically assembly, releasing pressure automatically assembly comprises steel ball seat and the pressure release steel ball for closed steel ball seat, the upper end of axle is connected with upper tool by whirligig, rotation assembly is arranged in pressurized coring tool, solving prior art due to pressurizing tool inner core can not rotate, easily cause the problem of the disintegration of core entering inner core, but cannot be airtight by inner core, do not reach the technical requirements of sealing core drilling.
Summary of the invention
The utility model object is to overcome existing hermetic core taking tool inner core non rotating, and disintegration of core and yield rate low defect when causing horizontal well to be cored, provide a kind of horizontal well drilling hermetic core taking tool to hang assembly.
The utility model is achieved through the following technical solutions:
The utility model is made up of rotating mechanism and crossover sub, rotating mechanism is made up of upper piston, return connector, piston seat, roller bearing, stop sleeve, bearing support, bearing pressure cap, return connector is " T " font circulus, uniform pin hole on step in the middle part of its central through hole; Upper piston is divided into connecting rod and cock body two parts, both are cylinder, and cock body diameter is greater than connecting rod diameter, and the connecting rod of upper piston is plugged in the central through hole of return connector, and be threaded connection with the cock body of its lower end, cock body is threaded in the central through hole of piston seat; Piston seat is in " T " font circulus, be threaded in the central through hole of crossover sub, piston seat upper, annular end face has the counterbore corresponding with the pin hole on step interior in the middle part of return connector central through hole, annular space between piston seat and return connector is provided with roller bearing, stop sleeve, roller bearing, bearing support successively, and is fixed by bearing pressure cap.
The beneficial effects of the utility model are:
The utility model can realize hermetic core taking tool inner core and not rotate with urceolus, in horizontal well sealing core drilling process, reaches higher core recovery and the effect of Sealed efficiency.
Accompanying drawing explanation
Fig. 1 is generalized section of the present utility model;
In figure, 1-upper piston; 2-pin; 3-roller bearing; 4-stop sleeve; 5-bearing support; 6-bearing pressure cap; 7-crossover sub; 8-return connector; 9-piston seat.
Detailed description of the invention
The utility model is made up of rotating mechanism and crossover sub 7, and rotating mechanism is made up of upper piston 1, return connector 8, piston seat 9, roller bearing 3, stop sleeve 4, bearing support 5, bearing pressure cap 6, and return connector 8 is in " T " font circulus; Piston seat 9 is in " T " font circulus, be threaded in the central through hole of crossover sub 7, roller bearing 3, stop sleeve 4, roller bearing 3, bearing support 5 are installed in the annular space between piston seat 9 and return connector 8 successively, and fixed by bearing pressure cap 6, upper piston 1 is threaded in the central through hole of piston seat 9.
Described piston seat 9 bottom, through bearing pressure cap 6 center hole, is threaded with crossover sub 7.
Described upper piston 1 is divided into connecting rod 1-a and cock body 1-b two parts, both are cylinder, cock body 1-b diameter is greater than connecting rod 1-a diameter, the connecting rod 1-a of upper piston 1 is plugged in the central through hole of return connector 8, and be threaded connection with the cock body 1-b of its lower end, cock body 1-b is threaded in the central through hole of piston seat 9.
Uniform pin hole on step in the middle part of described its central through hole of return connector 8, piston seat 9 upper, annular end face has the counterbore corresponding with the pin hole on step interior in the middle part of return connector 8 central through hole.
Before sealing core drilling, lower piston is installed in inner core lower end and makes inner core lower end airtight.By pin 2 through step pin hole in return connector 8, insert in the counterbore of piston seat 9 upper surface, guarantee can not rotate installing piston seat 9 in piston 1 process, make link closely between upper piston 1 and piston seat 9, subsequently pin 2 is taken out.Under the effect of upper piston 1 and lower piston, make inner core airtight.
During horizontal well sealing core drilling, under the driving of rotating disk, return connector 8, bearing pressure cap 6 and urceolus of coring start to rotate, piston seat 9, crossover sub 7, stop sleeve 4, bearing support 5, coring inner drum and rock core are static relative to return connector 8 under the effect of roller bearing 3, realize hermetic core taking tool inner core not with the effect that urceolus rotates, eliminate the torsion that rock core is subject to, effectively avoid the disintegration of core because inner cylinder rotating causes, improve core recovery.
Claims (4)
1. a horizontal well drilling hermetic core taking tool hangs assembly, be made up of rotating mechanism and crossover sub (7), it is characterized in that: rotating mechanism is made up of upper piston (1), return connector (8), piston seat (9), roller bearing (3), stop sleeve (4), bearing support (5), bearing pressure cap (6), return connector (8) is in " T " font circulus; Piston seat (9) is in " T " font circulus, be threaded in the central through hole of crossover sub (7), roller bearing (3), stop sleeve (4), roller bearing (3), bearing support (5) are installed in the annular space between piston seat (9) and return connector (8) successively, and are fixed by bearing pressure cap (6).
2. a kind of horizontal well drilling hermetic core taking tool according to claim 1 hangs assembly, it is characterized in that: described piston seat (9) bottom, through bearing pressure cap (6) center hole, is threaded with crossover sub (7).
3. a kind of horizontal well drilling hermetic core taking tool according to claim 1 hangs assembly, it is characterized in that: described upper piston (1) is divided into connecting rod (1-a) and cock body (1-b) two parts, both are cylinder, cock body (1-b) diameter is greater than connecting rod (1-a) diameter, the connecting rod (1-a) of upper piston (1) is plugged in the central through hole of return connector (8), and be threaded connection with the cock body (1-b) of its lower end, cock body (1-b) is threaded in the central through hole of piston seat (9).
4. a kind of horizontal well drilling hermetic core taking tool according to claim 1 hangs assembly, it is characterized in that: uniform pin hole on step in the middle part of described return connector (8) its central through hole, piston seat (9) upper, annular end face has the counterbore corresponding with the pin hole on step interior in the middle part of return connector (8) central through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420476866.5U CN204024551U (en) | 2014-08-22 | 2014-08-22 | A kind of horizontal well drilling hermetic core taking tool hangs assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420476866.5U CN204024551U (en) | 2014-08-22 | 2014-08-22 | A kind of horizontal well drilling hermetic core taking tool hangs assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024551U true CN204024551U (en) | 2014-12-17 |
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ID=52064435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420476866.5U Expired - Fee Related CN204024551U (en) | 2014-08-22 | 2014-08-22 | A kind of horizontal well drilling hermetic core taking tool hangs assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024551U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991767A (en) * | 2022-07-01 | 2022-09-02 | 中国地质科学院勘探技术研究所 | Deep typical weak source gas drilling continuous in-situ sampling device and sampling method |
| CN115717511A (en) * | 2021-08-24 | 2023-02-28 | 中国石油天然气集团有限公司 | Sealed shunt suspension device for coring |
-
2014
- 2014-08-22 CN CN201420476866.5U patent/CN204024551U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115717511A (en) * | 2021-08-24 | 2023-02-28 | 中国石油天然气集团有限公司 | Sealed shunt suspension device for coring |
| CN114991767A (en) * | 2022-07-01 | 2022-09-02 | 中国地质科学院勘探技术研究所 | Deep typical weak source gas drilling continuous in-situ sampling device and sampling method |
| CN114991767B (en) * | 2022-07-01 | 2023-09-05 | 中国地质科学院勘探技术研究所 | Deep typical weak source gas drilling continuous in-situ sampling device and sampling method |
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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: 20141217 Termination date: 20170822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |