CN203420635U - Minor-radius radial-direction well drilling positioning device - Google Patents
Minor-radius radial-direction well drilling positioning device Download PDFInfo
- Publication number
- CN203420635U CN203420635U CN201320464166.XU CN201320464166U CN203420635U CN 203420635 U CN203420635 U CN 203420635U CN 201320464166 U CN201320464166 U CN 201320464166U CN 203420635 U CN203420635 U CN 203420635U
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- China
- Prior art keywords
- guide shoe
- inner sleeve
- key
- outer tube
- direction well
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- Expired - Fee Related
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Abstract
The utility model relates to a minor-radius radial-direction well drilling positioning device which comprises a guide shoe and an outer sleeve. An eccentric channel is formed in the guide shoe, and the guide shoe is fixedly connected with the outer sleeve. Tubing pup joints and an inner sleeve are installed in the outer sleeve in a sleeved mode and mutually connected. The inner sleeve is arranged between the tubing pup joints close to the guide shoe. A key is arranged on the inner sleeve, and the key and an outlet of the eccentric channel are in the same direction. The outer sleeve is connected with the inner sleeve through a fixing bolt. The tubing pup joint at the lowest end is in threaded connection with an upper connector of the guide shoe. The outer sleeve is fixedly connected with the guide shoe through a coupling. The installation is easy, operation is convenient, the minor-radius radial-direction well drilling positioning device can be automatically connected with a directed measuring tool through the key, the occurrence rate of accidents is very low, and directed fees are reduced.
Description
Technical field
The utility model relates to a kind of small radius radial direction well bearing unit.
Background technology
Radial direction well technology obtains fast development in recent years, it is by getting out a plurality of horizontal holes on a reservoir plane, significantly increase oil well drainage area, Oil/gas Well output and exploitation rate are significantly improved, and are the means that improve low-permeability oil gas reservoir, viscous crude, OW, marginal oilwell and coal bed gas recovery ratio.Small radius radial direction well refers to that radius of curvature is less than the diameter of downhole tool, can in pit shaft, complete by downhole tool by vertical turning to horizontal direction, at present, oil well radial direction well exploitation mostly is the exploitation of deep-well or ultradeep well, and for how, under control well, the direction of steerable tool is very difficult really.
Utility model content
The deficiency that the utility model exists for prior art, provides a kind of simple in structure, installs simply, and easy to operate small radius radial direction well bearing unit, it has solved the problem that turns to tool orientation difficulty in radial direction well.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of small radius radial direction well bearing unit, it is characterized in that, comprise guide shoe and outer tube, in described guide shoe, be provided with eccentric channel, described guide shoe is fixedly connected with described outer tube, in described outer tube, be set with interconnective tubing nipple and inner sleeve, described inner sleeve is arranged near between the tubing nipple of described guide shoe, described inner sleeve is provided with key, and described key and the outlet of described eccentric channel are towards same direction.
Further, described outer tube is connected by set bolt with described inner sleeve.
Further, the described tubing nipple of least significant end is threaded with the top connection of described guide shoe.Described tubing nipple connecting thread place scribbles thread lubricating grease, prevents from getting rusty because long-time connection causes, and is difficult to the phenomenon of dismantling or damaging.
Further, described outer tube is fixedly connected with by box cupling with described guide shoe.
The beneficial effects of the utility model are: special-purpose directional-survey tool is lowered in tubing nipple, and when touching the key on inner sleeve surface, automatic clamping, as in key, is realized directional orientation tool and is combined with directional-survey tool, guarantee the carrying out of downhole orientation work.The utility model is installed simple, easy to operate, can be with directional-survey tool from being dynamically connected by key during well logging, and accident rate is extremely low, reduces directed expense.
Accompanying drawing explanation
Fig. 1 is the structural representation of utility model;
In Fig. 1: 1, tubing nipple; 2, outer tube; 3, inner sleeve; 4, box cupling; 5, guide shoe; 6, eccentric channel; 7, set bolt; 8, key.
The specific embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of small radius radial direction well bearing unit, it is characterized in that, comprise guide shoe 5 and outer tube 2, in described guide shoe 5, be provided with eccentric channel 6, described guide shoe 5 is fixedly connected with described outer tube 2, in described outer tube 2, be set with interconnective tubing nipple 1 and inner sleeve 3, described inner sleeve 3 is arranged near between the tubing nipple 1 of described guide shoe, and described inner sleeve 3 is provided with key 8, and described key 8 exports towards same direction with described eccentric channel 6.
Described outer tube 2 is connected by set bolt with described inner sleeve 3.
The described tubing nipple 1 of least significant end is threaded with the top connection of described guide shoe 5.Described tubing nipple 1 connecting thread place scribbles thread lubricating grease, prevents from getting rusty because long-time connection causes, and is difficult to the phenomenon of dismantling or damaging.
Described outer tube 2 is fixedly connected with by box cupling 4 with described guide shoe 5.
Installation process, keep outer tube 2 interior clean, key 8 is put into inner sleeve 3, inner sleeve 3 is screwed in outer tube 2, then guide shoe 5 is connected with tubing nipple 1, outer tube 2, outside is fixed on outer tube 2 in the top connection of guide shoe 5 by box cupling 4, then adjust key 8 with the outlet of the eccentric channel 6 of guide shoe towards same direction.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a small radius radial direction well bearing unit, it is characterized in that, comprise guide shoe and outer tube, in described guide shoe, be provided with eccentric channel, described guide shoe is fixedly connected with described outer tube, is set with interconnective tubing nipple and inner sleeve in described outer tube, and described inner sleeve is arranged near between the tubing nipple of described guide shoe, described inner sleeve is provided with key, and described key and the outlet of described eccentric channel are in the same way.
2. small radius radial direction well bearing unit according to claim 1, is characterized in that, described outer tube is connected by set bolt with described inner sleeve.
3. small radius radial direction well bearing unit according to claim 1, is characterized in that, the described tubing nipple of least significant end is threaded with the top connection of described guide shoe.
4. small radius radial direction well bearing unit according to claim 1 and 2, is characterized in that, described outer tube is fixedly connected with by box cupling with described guide shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464166.XU CN203420635U (en) | 2013-07-31 | 2013-07-31 | Minor-radius radial-direction well drilling positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464166.XU CN203420635U (en) | 2013-07-31 | 2013-07-31 | Minor-radius radial-direction well drilling positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203420635U true CN203420635U (en) | 2014-02-05 |
Family
ID=50019734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320464166.XU Expired - Fee Related CN203420635U (en) | 2013-07-31 | 2013-07-31 | Minor-radius radial-direction well drilling positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203420635U (en) |
-
2013
- 2013-07-31 CN CN201320464166.XU patent/CN203420635U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20160731 |