CN206769809U - A kind of eccentric location device suitable for radial bore - Google Patents

A kind of eccentric location device suitable for radial bore Download PDF

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Publication number
CN206769809U
CN206769809U CN201720287105.9U CN201720287105U CN206769809U CN 206769809 U CN206769809 U CN 206769809U CN 201720287105 U CN201720287105 U CN 201720287105U CN 206769809 U CN206769809 U CN 206769809U
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CN
China
Prior art keywords
eccentric
steering gear
radial bore
joint
drilling
Prior art date
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Active
Application number
CN201720287105.9U
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Chinese (zh)
Inventor
陈勇
聂云飞
吴仲华
田宗正
于文涛
陈忠帅
赵宗锋
庄伟�
张锐
宁仁磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinopec Oilfield Service Corp
Sinopec Shengli Petroleum Engineering Corp
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
Original Assignee
Sinopec Oilfield Service Corp
Sinopec Shengli Petroleum Engineering Corp
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
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Application filed by Sinopec Oilfield Service Corp, Sinopec Shengli Petroleum Engineering Corp, Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp filed Critical Sinopec Oilfield Service Corp
Priority to CN201720287105.9U priority Critical patent/CN206769809U/en
Application granted granted Critical
Publication of CN206769809U publication Critical patent/CN206769809U/en
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Abstract

It the utility model is related to petroleum gas oil producing operation field of tool, it is a kind of eccentric location device suitable for radial bore, including be sequentially connected up and down drilling steering gear 1, eccentric joint 6, wherein, drilling steering gear 1 is configured with drill bit supporting positive cover 2, lower contact is an eccentric structure not on an axis on described eccentric joint 6;Articulation 3 is also connected between drilling steering gear 1 and eccentric joint 6;The articulation 3 includes establishing the top connection of connection with drilling steering gear 1 and the lower contact of connection is established with eccentric joint 6, and forms rotational positioning by rotation stop pad 4 and holding screw 5 between upper and lower joint and lock.The device can effectively utilize the steering gear suitable for small size sleeve pipe, in large scale casing inner diameter to that need not change steering gear during drilling, drill bit supporting positive cover is pressed close to large scale casing wall by eccentric location device, complete radial bore construction.

Description

A kind of eccentric location device suitable for radial bore
Technical field
Eccentric location device of the present utility model is related to production string drilling field, makes flexible pipe by hydraulic action after drilling Pass through bored collar aperture and enter oil reservoir, it is established that oil flow channel.Specifically, the utility model makes radial bore instrument in big chi In very little production string, still drill bit supporting positive cover can be made to be close to production string, be easy to production string to drill.
Background technology
Radial bore technology is an important measures of well production increment, for having in the storey increase design of Low permeable oil and gas reservoirs Good effect.The steering gear of sleeve pipe radial bore is commonly available to, during radial bore, drill bit supporting positive cover needs always It is close to casing wall, could be so drilled on sleeve pipe.But when radial bore construction is carried out in large scale sleeve pipe, due to sleeve pipe Internal diameter increases, and drill bit supporting positive cover can not press close to sleeve pipe, and original radial bore instrument can not be applied to construct in large scale sleeve pipe.
Common solution this method is to change large scale radial bore steering gear, but this method can not be effectively using existing Small size steering gear, cause to waste.
Utility model content
The problem of the purpose of this utility model exists for prior art, there is provided one kind is applied in various sizes of sleeve pipe Footpath carries out the eccentric location device suitable for radial bore of drilling construction.Using the eccentric location device, turned to without changing The radial bore construction of different size sleeve pipes is completed in the case of device, one kind is provided to drilling construction for large-sized casing inner diameter Simple and effective device.
To achieve these goals, the utility model takes following technical scheme:
A kind of eccentric location device suitable for radial bore, including be sequentially connected up and down drilling steering gear 1, eccentric joint 6, wherein, drilling steering gear 1 is configured with drill bit supporting positive cover 2, on described eccentric joint 6 lower contact not on an axis, be One eccentric structure;Articulation 3 is also connected between drilling steering gear 1 and eccentric joint 6;The articulation 3 includes and brill Hole steering gear 1 establishes the top connection of connection and the lower contact of connection is established with eccentric joint 6, and by only between upper and lower joint Turn pad 4 and holding screw 5 forms rotational positioning locking.
The structure of rotation stop pad 4 includes the pincers tooth being mutually twisted on upper and lower two faces and two faces.
Pincers thread form shape includes trapezoidal or triangular pyramidal.
Device of the present utility model is mainly by drilling steering gear, drill bit supporting positive cover, articulation, rotation stop pad, holding screw Formed with parts such as eccentric joints.Articulation is set up between drilling steering gear and eccentric joint, unclamps holding screw and rotation stop Pad, articulation is adjusted, the eccentric side of eccentric joint is alignd in one direction with drill bit supporting positive cover, tightens holding screw.
The utility model has the advantage of:Realize drill bit supporting positive cover in large scale sleeve pipe in the situation that need not change steering gear Inside press close to casing wall, complete the radial bore construction of different size sleeve pipes, reduce construction cost, improve the steering gear scope of application.
Brief description of the drawings
Fig. 1 is a kind of eccentric location device structural representation suitable for radial bore;
Wherein 1 drilling steering gear, 2 drill bit supporting positive covers, 3 articulations, 4 rotation stop pads, 5 holding screws, 6 eccentric joints, 7 sets Pipe, 8 tubing anchors.
Fig. 2 is the pincers tooth schematic shapes of rotation stop pad;
Pincers tooth on rotation stop pad two sides has a variety of tooth forms, there is trapezoidal tooth or triangle tooth.
Embodiment
Fig. 1 in illustrating below in conjunction with the accompanying drawings is described further to the utility model.
Shown is a kind of eccentric location device suitable for radial bore in Fig. 1, including be sequentially connected from top to bottom Drill steering gear 1 and eccentric joint 6, wherein, drilling steering gear 1 is configured with drill bit supporting positive cover 2, and described eccentric joint is about 6 Joint is not an eccentric structure on an axis;Articulation is also connected between drilling steering gear 1 and eccentric joint 6 3;The articulation 3 includes establishing the top connection of connection with drilling steering gear 1 and the lower contact of connection is established with eccentric joint 6, And rotational positioning is formed by rotation stop pad 4 and holding screw 5 between upper and lower joint and locked.
The structure of rotation stop pad 4 includes the pincers tooth being mutually twisted on upper and lower two faces and two faces.
Pincers thread form shape includes yi shaped ladder shape or triangular pyramidal.
A kind of position fixing process of eccentric location device suitable for radial bore is:Will drilling steering gear 1 and the phase of eccentric joint 6 Even, the lower section of eccentric joint 6 connects tubing anchor 8;After connecting, whether observation drill bit supporting positive cover 2 is with the eccentric side of eccentric joint 6 at one On direction;If in one direction, not unclamping holding screw 5, articulation 3 is adjusted, the eccentric side and drill bit for making eccentric joint 6 are helped Positive set 2 aligns in one direction, tightens holding screw 5, fixes it by rotation stop pad 4.Under get into predetermined well depth, sit and hang oil Pipe anchor 8, sleeve pipe 7 drill.
The eccentric location device of above-described embodiment, which can be realized, need not change the feelings of large-sized radial bore steering gear Under condition, the steering gear of existing radial bore can be effectively utilized, it is applicable various sizes of sleeve pipe radial bore construction.

Claims (3)

1. a kind of eccentric location device suitable for radial bore, including drilling steering gear(1)And eccentric joint(6), wherein, drilling Steering gear(1)It is configured with drill bit supporting positive cover(2), described eccentric joint(6)Upper lower contact is not one inclined on an axis Core structure;It is characterized in that:In drilling steering gear(1)And eccentric joint(6)Between be connected with articulation(3);The articulation(3) Including with drill steering gear(1)Establish top connection and and the eccentric joint of connection(6)The lower contact of connection is established, and upper and lower is connect Pass through rotation stop pad between head(4)And holding screw(5)Form rotational positioning locking.
2. the eccentric location device according to claim 1 suitable for radial bore, it is characterized in that:Rotation stop pad(4)Knot Structure includes the pincers tooth being mutually twisted on upper and lower two faces and two faces.
3. the eccentric location device according to claim 2 suitable for radial bore, it is characterized in that:Thread form shape is clamped including trapezoidal Or triangular pyramidal.
CN201720287105.9U 2017-03-23 2017-03-23 A kind of eccentric location device suitable for radial bore Active CN206769809U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720287105.9U CN206769809U (en) 2017-03-23 2017-03-23 A kind of eccentric location device suitable for radial bore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720287105.9U CN206769809U (en) 2017-03-23 2017-03-23 A kind of eccentric location device suitable for radial bore

Publications (1)

Publication Number Publication Date
CN206769809U true CN206769809U (en) 2017-12-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720287105.9U Active CN206769809U (en) 2017-03-23 2017-03-23 A kind of eccentric location device suitable for radial bore

Country Status (1)

Country Link
CN (1) CN206769809U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625780A (en) * 2017-03-23 2018-10-09 中石化石油工程技术服务有限公司 A kind of eccentric location device suitable for radial bore

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625780A (en) * 2017-03-23 2018-10-09 中石化石油工程技术服务有限公司 A kind of eccentric location device suitable for radial bore

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