CN203420650U - Guide shoe used for radial well drilling - Google Patents
Guide shoe used for radial well drilling Download PDFInfo
- Publication number
- CN203420650U CN203420650U CN201320464128.4U CN201320464128U CN203420650U CN 203420650 U CN203420650 U CN 203420650U CN 201320464128 U CN201320464128 U CN 201320464128U CN 203420650 U CN203420650 U CN 203420650U
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- CN
- China
- Prior art keywords
- halfbody
- guide shoe
- half body
- eccentric
- radial direction
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Abstract
The utility model relates to a guide shoe used for radial well drilling. The guide shoe comprises a shoe body, the shoe body comprises a first half body and a second half body which are arranged symmetrically, the first half body and the second half body are respectively provided with an eccentric groove, the eccentric grooves are joint in a butting mode to form an eccentric channel, the eccentric channel is of a bent hook structure, and the first half body and the second half body are joint in a butting mode to be sequentially provided with a butterfly-shaped locking base, an upper joint and a lower joint from top to bottom. The first half body and the second half body are connected into an integrated structure through fixing bolts. The first half body is provided with a positioning pin, and the positioning pin is matched with a positioning pin hole correspondingly formed in the second half body. The guide shoe used for radial well drilling is simple in structure and convenient to install, integrity of a sleeve does not need to be damaged, a flexible shaft can be effectively protected and thus cannot be blocked in the guide shoe, change from the perpendicular direction to the horizontal direction is completed stably, side drilling cost or new well drilling cost is greatly reduced, and construction cost is lowered.
Description
Technical field
The utility model relates to a kind of guide shoe for radial direction well.
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, utilize jet nozzle to carry out the new technology of radial horizontal drilling simultaneously, therefore need a kind of radial direction well steering tool, can realize bend radius extremely short, without hole enlargement, directly complete by vertical turning to horizontal direction.
Utility model content
The deficiency that the utility model exists for prior art, provide a kind of simple in structure, the guide shoe for radial direction well easy for installation, and it has solved in radial direction well by vertically to the guiding problem of horizontal direction.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of guide shoe for radial direction well, comprise footwear body, it is characterized in that, described footwear body comprises symmetrically arranged the first halfbody and the second halfbody, described the first halfbody and the second halfbody are provided with eccentric grove, described the first halfbody and the second halfbody connect as one structure, described eccentric grove is combined to form eccentric channel, described eccentric channel is hooked shape structure, described footwear body is provided with butterfly stop-motion seat from top to bottom successively, top connection and lower contact, the upper end of described eccentric channel is communicated with described butterfly stop-motion seat, lower end passes from a side of described footwear body.Described eccentric channel has realized by vertically to the turning to of horizontal direction, and described eccentric channel connects described butterfly stop-motion seat, and external motor is arranged on footwear body by butterfly stop-motion seat, mainly plays a part to support, locate.
Further, described the first halfbody and the second halfbody connect as one structure by set bolt.
Further, described the first halfbody is provided with alignment pin, and described alignment pin matches with the corresponding dowel hole being arranged on described the second halfbody.
Further, in the exit of described eccentric channel, be provided with groove.
Further, in described groove, be also provided with guide pad, in the middle of described guide pad, be provided with the through hole being communicated with described eccentric channel.Be used for laying locating piece, play the effect of location.
Further, described eccentric grove is semicircular arc groove.
The beneficial effects of the utility model are: simple in structure, control reliable; do not need to destroy the integrality of sleeve pipe; can effectively protect in the eccentric channel of flexible axle in guide shoe and not be stuck; steadily complete by vertical turning to horizontal direction; the expense that greatly reduces sidetracking or new well drilling, reduces construction cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first halfbody in utility model embodiment 1;
Fig. 2 is the structural representation of the second halfbody in utility model embodiment 1;
Fig. 3 is the structural representation of the first halfbody in utility model embodiment 2;
Fig. 4 is the structural representation of the second halfbody in utility model embodiment 2.
Fig. 5 is the utility model mounting structure schematic diagram.
In Fig. 1～Fig. 5: 1, butterfly stop-motion seat; 2, top connection; 3, eccentric grove; 4, through hole; 5, installing hole; 6, dowel hole; 7, guide pad; 8, the first halfbody; 9, the second halfbody; 10, lower contact; 11, alignment pin; 12, guide shoe; 13, auger motor; 14, tubing nipple; 15, centralizer; 16, box cupling; 17, flexible axle; 18, drill bit.
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.
Embodiment 1
As shown in Fig. 1～Fig. 2, a kind of guide shoe for radial direction well, comprise footwear body, it is characterized in that, described footwear body comprises symmetrically arranged the first halfbody 8 and the second halfbody 9, described the first halfbody 8 and the second halfbody 9 connect as one structure, described the first halfbody 8 and the second halfbody 9 are provided with eccentric grove 3, described eccentric grove 3 is combined to form eccentric channel, described eccentric channel is hooked shape structure, the involutory butterfly stop-motion seat 1 that is provided with successively from top to bottom of described the first halfbody 8 and the second halfbody 9, top connection 2 and lower contact 10, the upper end of described eccentric channel is communicated with described butterfly stop-motion seat, lower end passes from a side of described footwear body.Described eccentric channel has realized by vertically to the turning to of horizontal direction, and in described eccentric channel, upper end is communicated with described butterfly stop-motion seat 1, facilitates external motor to be arranged on footwear body by butterfly stop-motion seat, mainly plays a part to support, locate.
Described the first halfbody 8 and the second halfbody 9 connect as one structure by set bolt.Described set bolt is connected and fixed halved body by the installing hole 5 on the first halfbody and the second halfbody.
Described the first halfbody is provided with alignment pin 11, and described alignment pin 11 matches with the corresponding dowel hole 6 being arranged on described the second halfbody.
Described eccentric grove is semicircular arc groove.
As shown in Fig. 3～Fig. 4, in the exit of described eccentric channel, be provided with groove.In described groove, be also provided with guide pad 7, described guide pad 7 is provided with the through hole 4 being communicated with described eccentric channel.Installation process is first arranged on guide pad 7 one end in the first halfbody groove, then involutory with the second halfbody under the effect of alignment pin, the other end of guide pad just in time snaps in the groove of the second halfbody, then by set bolt, is fixing, and all the other structures are identical with embodiment 1.
As shown in Figure 5, for the utility model mounting structure schematic diagram, described guide shoe 12 upper, lower contact is threaded connection tubing nipple 14, described tubing nipple 14 is provided with centralizer 15, described centralizer 15 works to push away guide shoe, between described tubing nipple 14, by box cupling 16, connect, described tubing nipple 14 is sleeved on the outside of auger motor 13, described auger motor 13 is sitting on the butterfly stop-motion seat of described guide shoe, described auger motor 13 lower ends connect drill bit 18 by flexible axle 17, described auger motor 13 drives described flexible axle 17 to be rotated action in described guide shoe 12, utilize the universal performance of flexible axle 17, assurance enters in the eccentric channel of guide shoe, realize drill bit 18 from vertical turning to horizontal 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 (6)
1. the guide shoe for radial direction well, comprise footwear body, it is characterized in that, described footwear body comprises symmetrically arranged the first halfbody and the second halfbody, described the first halfbody and the second halfbody are provided with eccentric grove, described the first halfbody and the second halfbody connect as one structure, described eccentric grove is combined to form eccentric channel, described eccentric channel is hooked shape structure, described footwear body is provided with butterfly stop-motion seat, top connection and lower contact from top to bottom successively, the upper end of described eccentric channel is communicated with described butterfly stop-motion seat, and lower end passes from a side of described footwear body.
2. the guide shoe for radial direction well according to claim 1, is characterized in that, described the first halfbody and the second halfbody connect as one structure by set bolt.
3. the guide shoe for radial direction well according to claim 1 and 2, is characterized in that, described the first halfbody is provided with alignment pin, and described alignment pin matches with the corresponding dowel hole being arranged on described the second halfbody.
4. the guide shoe for radial direction well according to claim 1, is characterized in that, in the exit of described eccentric channel, is provided with groove.
5. the guide shoe for radial direction well according to claim 4, is characterized in that, is also provided with guide pad in described groove, and described guide pad is provided with the through hole being communicated with described eccentric channel.
6. the guide shoe for radial direction well according to claim 1, is characterized in that, described eccentric grove is semicircular arc groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464128.4U CN203420650U (en) | 2013-07-31 | 2013-07-31 | Guide shoe used for radial well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464128.4U CN203420650U (en) | 2013-07-31 | 2013-07-31 | Guide shoe used for radial well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203420650U true CN203420650U (en) | 2014-02-05 |
Family
ID=50019749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320464128.4U Expired - Fee Related CN203420650U (en) | 2013-07-31 | 2013-07-31 | Guide shoe used for radial well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203420650U (en) |
-
2013
- 2013-07-31 CN CN201320464128.4U patent/CN203420650U/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 |