CN2628712Y - Oil well side-wall core barrel - Google Patents
Oil well side-wall core barrel Download PDFInfo
- Publication number
- CN2628712Y CN2628712Y CN 03214146 CN03214146U CN2628712Y CN 2628712 Y CN2628712 Y CN 2628712Y CN 03214146 CN03214146 CN 03214146 CN 03214146 U CN03214146 U CN 03214146U CN 2628712 Y CN2628712 Y CN 2628712Y
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- CN
- China
- Prior art keywords
- base
- tube
- coring
- core tube
- core
- 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 a coring tube for an oil well sidewall which is used in the process of well logging of petroleum drilling exploration, and comprises a core tube 1, a base 4, fixing rubber cushions 5, screws 2, O-shaped rings 3 and sealing rings 6. The coring tube has the advantages of convenient assembly and operation, safe and reliable performance, excellent tightness as well as strong emissive power. In addition, the coring tube has significantly higher coring yield than prior coring tubes, and is free of problems that the acquired stratum core is washed off or that generally hard stratum core cannot be successfully drawn up, therefore being worthy of popularization and application.
Description
Technical field:
The utility model relates to a kind of downhole hardware that is used for oil drilling well logging process admission record, belongs to side-wall coring instrument class.
Background technology:
Side-wall coring is the important way of oil drilling process admission record, judgement oil-gas Layer.At present, the on-the-spot downhole cable side-wall coring technology of using usually mainly is to adopt well bore sidewall core taker to load onto row's (36) coring tube, will fill the target zone that the corer of coring tube is lowered in the open hole well with cable and carry out coring.Because the present structural defective of coring tube that adopts, in its assembly manipulation process, there are many hidden dangers, the comparatively outmoded backwardness of the sealing technology of corer coyote hole in addition, thus the safety of raising, particularly fitting operation that has influence on coring recovery rate is just more important.
Summary of the invention:
The purpose of this utility model is to provide a kind of good airproof performance, safe and reliable, the oil-well wall coring tube that can improve coring recovery rate.
The utility model is to realize like this.This kind coring tube by core tube, base and fixedly rubber cushion, screw, round section joint ring, joint ring forms, base is housed below the core tube, and tightens with the left-hand thread connection, be provided with fixedly rubber cushion therebetween; Be provided with round section joint ring in the circular groove of base top, its top is provided with screw and tightens with the base vent hole, is set with joint ring in the perisporium groove of bottom.During use, a plurality of coring tubes bottom is aligned each trajectory hole of corer, firmly press down, joint ring just can make coring tube bottom and corer trajectory wall realization pressure bearing and seal, and the core tube can be securely fixed in the trajectory.At this moment, the corer that installs can be connected G.I.H and carry out the side-wall coring operation with cable head.
The utility model assembling, easy to operate, safe and reliable, good airproof performance, emissivity is strong, the stratum core that can not occur getting is rinsed, general hard formation core is got the phenomenon of not coming up, thereby the existing coring tube of coring recovery rate improves a lot, and is suitable for and applies.
Description of drawings: Fig. 1 is a structural representation of the present utility model.
Fig. 2 is its A-A sectional drawing.
The specific embodiment: enforcement of the present utility model is described further below in conjunction with accompanying drawing.
As shown in the figure: the utility model is by core tube 1, screw 2, round section joint ring 3, base 4, fixedly rubber cushion 5, joint ring 6 are formed, and its structure assembled relation is as follows: base 4 is equipped with in core tube 1 below, and connects with left-hand thread and to tighten, and is provided with fixedly rubber cushion 5 therebetween; Be provided with round section joint ring 3 in the base 4 top circular grooves, its top is provided with screw 2 and tightens with base 4 air vents, is set with joint ring 6 in the base 4 bottom perisporium grooves.Wherein, core tube 1 is a cylinder, and its top is the big streamlined that is similar to bullet, and inner headed face is provided with 3 road helicla flutes, is used to prevent that the core of getting is unlikely is rinsed, and is uniformly distributed with the vertical anti-slip tank in 4 roads and 4 mud taps on the outer wall along the circumference.Base 4 top external diameters and core tube 1 internal diameter match, lower outer diameter is identical with core tube 1 external diameter, and its top inner headed face is provided with round platform, and the bottom periphery is provided with the groove that joint ring is installed, and having the wire rope hole that 2 relative being used for connect corer, the inboard is provided with tiltedly straight air vent down.
Claims (3)
1, a kind of oil-well wall coring tube is made up of core tube (1), base (4), it is characterized in that, core tube (1) below is equipped with base (4) and is tightened with the left-hand thread connection, is provided with fixedly rubber cushion (5) therebetween; Be provided with round section joint ring (3) in the inner headed face circular groove of base (4) top, its top is provided with screw (2) and tightens with base (4) air vent, is set with joint ring (6) in the perisporium groove of bottom.
2, oil-well wall coring tube according to claim 1, it is characterized in that core tube (1) is a cylinder, its top is the big streamlined that is similar to bullet, inner headed face is provided with 3 road helicla flutes, is uniformly distributed with the vertical anti-slip tank in 4 roads and 4 mud taps on the outer wall along the circumference.
3, oil-well wall coring tube according to claim 1, it is characterized in that, base (4) top external diameter and core tube (1) internal diameter match, lower outer diameter is identical with core tube (1) external diameter, its top inner headed face is provided with round platform, the bottom periphery is provided with groove, and has 2 relative wire rope holes, and the inboard is provided with tiltedly straight air vent down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03214146 CN2628712Y (en) | 2003-08-05 | 2003-08-05 | Oil well side-wall core barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03214146 CN2628712Y (en) | 2003-08-05 | 2003-08-05 | Oil well side-wall core barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2628712Y true CN2628712Y (en) | 2004-07-28 |
Family
ID=34242605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03214146 Expired - Fee Related CN2628712Y (en) | 2003-08-05 | 2003-08-05 | Oil well side-wall core barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2628712Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255021A (en) * | 2017-07-28 | 2017-10-17 | 中国石油集团西部钻探工程有限公司 | Deliver unlocking device |
-
2003
- 2003-08-05 CN CN 03214146 patent/CN2628712Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255021A (en) * | 2017-07-28 | 2017-10-17 | 中国石油集团西部钻探工程有限公司 | Deliver unlocking device |
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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 |