CN206174886U - But self -conductance formula rotate eccentric float shoe - Google Patents
But self -conductance formula rotate eccentric float shoe Download PDFInfo
- Publication number
- CN206174886U CN206174886U CN201621153947.7U CN201621153947U CN206174886U CN 206174886 U CN206174886 U CN 206174886U CN 201621153947 U CN201621153947 U CN 201621153947U CN 206174886 U CN206174886 U CN 206174886U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- mandrel
- self
- fixed cover
- wall
- 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 discloses a but self -conductance formula rotate eccentric float shoe, the rolling stopper apparatus comprises a mandrel, the cover is equipped with fixed cover and sliding sleeve on the outer wall of dabber, the upper portion of sliding sleeve with form the annular space between the dabber, the upper end of sliding sleeve is passed through fixed cover with the outer wall of dabber is connected, mandrel outer wall is last, be located and be provided with the restriction in the annular space of fixed cover fixed cover with the spacing ring of sliding sleeve position, be provided with on the tip outer wall under the dabber and realize along its up -and -down motion the sliding sleeve is around the rotatory switching -over track of axis, seted up on the sliding sleeve with the corresponding direction pinhole of switching -over track, the downthehole tip that is provided with of uide pin is located interior, the edge of switching -over track gliding uide pin about the switching -over track, end connection has drillable eccentric ball face guide shoe under the sliding sleeve. The utility model discloses the operation is gone into down to the pipe cluster in doing benefit to highly deviated well, big displacement well and horizontal well, and reducible pipe cluster chance hinders the probability.
Description
Technical field
The utility model be related to offshore oilfield underground develop, more particularly to a kind of oil gas field high angle hole, extended reach well with
And the self-contained rotatable eccentric float shoe of horizontal well development.
Background technology
As high angle hole, extended reach well and horizontal well technology are with more and more extensively, often high angle hole, big displacement
The hole condition of well and horizontal well is relative complex, more through tomography, therefore during well is drilled, not in place under tail pipe, cutting ferrule
The complex situations such as pipe and accident happen occasionally.
At present, occur using traditional float shoe, traditional float shoe during the complex situations such as viscous card in setting of casing, tail pipe operation process
Rotation need rotation integral tube string to realize, increased workload and task difficulty, have impact on operation timeliness.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, there is provided one kind is conducive to high angle hole, big displacement
Enter operation in well and horizontal well under pipe string, reduce pipe string and be hampered probability, easy to operate self-contained rotatable eccentric float shoe.
The technical scheme that the utility model is used is：A kind of self-contained rotatable eccentric float shoe, including mandrel, the core
Fixed cover and sliding sleeve are arranged with the outer wall of axle, annular space is formed between the top of the sliding sleeve and the mandrel, the sliding sleeve
Upper end is connected by the fixed cover with the outer wall of the mandrel；On the mandrel outer wall, positioned at the fixed cover
The spacing ring of the restricted fixed cover and the sliding sleeve position is set in annular space；Edge is provided with the outer wall of the mandrel bottom
The commutation track that the sliding sleeve is rotated about the axis is realized in its up and down motion；Offered on the sliding sleeve relative with the commutation track
The guide pin hole answered, is provided with end and is located in the commutation track, is glided along the commutation track in the guide pin hole
Dynamic guide finger；The sliding sleeve bottom is connected with drillable eccentric spherical guide shoe.
It is described commutation track be made up of 24 positive and negative staggered Y types tracks, the two side arms of each Y types track with
The side arm of its adjacent inverted Y types track aligns.
12 guide pin holes uniformly are offered on the sliding sleeve, described leading is provided with each described guide pin hole
To pin.
The guide finger is fixed on the sliding sleeve by pressure cap.
The limited ring groove of the fixation spacing ring is provided with the outer wall of the mandrel.
The bottom of the fixed cover is connected with the upper end of the sliding sleeve by screw thread.
The sliding sleeve bottom is connected with the drillable eccentric spherical guide shoe end by screw thread.
The mandrel, the fixed cover, the sliding sleeve and the drillable eccentric spherical guide shoe use duralumin material system
Into.
The beneficial effects of the utility model are：
1st, the commutation pipeline that the utility model is set, the rotation for realizing guide shoe is moved to axial by mandrel and sliding sleeve
Turn；When entering to be hampered under pipe string can, can rotate self-contained rotatable eccentric float shoe by above putting the operation put, above carry every time
Decentralization eccentric spherical guide shoe position rotates 30 °, until eccentric spherical guide shoe guiding tube string passes through tight point, this rotation side
Formula avoids the integral-rotation of pipe string, reduces operation difficulty, easy to operate.
2nd, do not exist bearing arrangement in the utility model structure, interior latus rectum is big, and Stability Analysis of Structures is easy to subsequent job.
The most sharp place in top of the drillable eccentric spherical guide shoe that the 3rd, the utility model is used is not in the axis of guide shoe body
On line, end is along eccentric spherical transition so that there is larger eccentric spherical guide shoe end side, is hampered or runs into when entering under pipe string
During complicated fault, the angle that can be adapted to guide shoe rotation is so that using eccentric spherical, by tight point, more conducively guiding tube string is smooth
Under enter.
Brief description of the drawings
Fig. 1：The utility model cross section structure diagram；
Fig. 2：The utility model drillable eccentric spherical guide shoe three dimensional structure diagram.
Accompanying drawing is marked：1st, mandrel；2nd, fixed cover；3rd, sliding sleeve；4th, drillable eccentric spherical guide shoe；5th, spacing ring；6th, it is oriented to
Pin；7th, pressure cap；8th, commutate track；41st, the first hydrophthalmia；42nd, the second hydrophthalmia；43rd, the 3rd hydrophthalmia；44th, openend；45th, internal contracting
Footpath；46th, inner seal end；47th, guide shoe top.
Specific embodiment
The utility model will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of self-contained rotatable eccentric float shoe, including mandrel 1, is arranged on the outer wall of the mandrel 1
There are fixed cover 2 and sliding sleeve 3, annular space is formed between the top of the sliding sleeve 3 and the mandrel 1, the upper end of the sliding sleeve 3 passes through
The fixed cover 2 is connected with the outer wall of the mandrel 1, and the bottom of the fixed cover 2 passes through with the upper end of the sliding sleeve 3
Screw thread is connected.On the outer wall of the mandrel 1, positioned at the annular space of the fixed cover 2 in the restricted fixed cover 2 and institute are set
The spacing ring 5 of the position of sliding sleeve 3 is stated, the spacing ring 5 is fixed in the limited ring groove opened up on the outer wall of the mandrel 1.The core
It is provided with the bottom outer wall of axle 1 and realizes the commutation track 8 that the sliding sleeve 3 is rotated about the axis, the commutation along its up and down motion
Track 8 is made up of 24 positive and negative staggered Y types tracks, the two side arms inverted Y types adjacent thereto of each Y types track
The side arm of track aligns.Guide pin hole is offered on the sliding sleeve 3, the guide pin hole is set to and the commutation track 8
12 corresponding guide pin holes, and be evenly arranged on the sliding sleeve 3, it is provided with end in each described guide pin hole
The guide finger 6 that portion is located in the commutation track 8, is slided up and down along the commutation track 8, each described guide finger 6 passes through
Pressure cap 7 is fixed on the sliding sleeve 3；There is drillable eccentric spherical guide shoe 4 bottom of the sliding sleeve 3 by screwed connection.
The drillable eccentric spherical guide shoe 4 (as depicted in figs. 1 and 2), including total length is that 306mm, maximum outside diameter are
The guide shoe body of 193mm, the guide shoe body is the front and rear symmetrical, core structure in midair of one end open, another end closure, its opening
The outside of end 44 is provided with standard pin thread, and internal diameter is 145mm；It is 230mm that the tip lengths of inner seal end 46 are arrived in openend 44.It is described
The inner seal end 46 of guide shoe body is along circular conical surface transition, length at the inside undergauge 45 of its openend 44 to inner seal end 46
It is 170mm.By the globally transition of openend 44 to sealing end, the bottom of the guide shoe body is by opening on the top of the guide shoe body
Mouth end 44 is to sealing end successively along eccentric spherical, eccentric cylinder transition so that the most sharp place in guide shoe top 47 is not in guide shoe body
On axis, end is along eccentric spherical transition so that the sealing end of guide shoe has larger eccentric spherical；The guide shoe body it is upper
The first hydrophthalmia 41 is distributed with portion's transition face, the axis of first hydrophthalmia 41 is located on the central fore-and-aft vertical plane of the guide shoe body,
It is in 20 ° of angles, a diameter of 35mm with horizontal line；The He of the second hydrophthalmia 42 is symmetrically distributed with the lower transition face of the guide shoe body
The axis of the 3rd hydrophthalmia 43, second hydrophthalmia 42 and the 3rd hydrophthalmia 43 is parallel with horizontal line, and diameter is 35mm.
In the utility model, the mandrel 1, the fixed cover 2, the sliding sleeve 3 and the drillable eccentric spherical guide shoe 4
It is made of duralumin material.
When the utility model is used, the utility model float shoe is above carried, the guide finger 6 is from a lower leg for Y type tracks
Portion slides into the upper leg part of adjacent inverted Y types track, transfers the utility model float shoe, and the guide finger 6 is from the inverted Y
The upper leg part of type track slides into the lower leg part of another Y type track just put adjacent thereto, realizes the sliding sleeve 3 around axle
Line rotates 30 °, and the drillable eccentric spherical guide shoe 4 that drive is connected with the sliding sleeve 3 rotates 30 °, repeats to be put on above-mentioned and puts
Operation, until the guiding tube string of drillable eccentric spherical guide shoe 4 passes through tight point.
Claims (8)
1. a kind of self-contained rotatable eccentric float shoe, including mandrel, it is characterised in that be arranged with fixation on the outer wall of the mandrel
Set and sliding sleeve, form annular space between the top of the sliding sleeve and the mandrel, the upper end of the sliding sleeve passes through the fixed cover
Outer wall with the mandrel is connected；On the mandrel outer wall, positioned at the annular space of the fixed cover in set restricted described
The spacing ring of fixed cover and the sliding sleeve position；It is provided with the outer wall of the mandrel bottom and realizes the cunning along its up and down motion
The commutation track that set is rotated about the axis；The guide pin hole corresponding with the commutation track is offered on the sliding sleeve, it is described to lead
The guide finger for commutating in track, being slided up and down along the commutation track is located to end is provided with pin-and-hole；The sliding sleeve
Bottom is connected with drillable eccentric spherical guide shoe.
2. self-contained rotatable eccentric float shoe according to claim 1, it is characterised in that the commutation track by 24 just
Anti- staggered Y types track composition, the side arm phase of the two side arms inverted Y types track adjacent thereto of each Y types track
Alignment.
3. self-contained rotatable eccentric float shoe according to claim 1, it is characterised in that uniformly offered on the sliding sleeve
12 guide pin holes, the guide finger is provided with each described guide pin hole.
4. self-contained rotatable eccentric float shoe according to claim 1, it is characterised in that the guide finger is solid by pressure cap
It is scheduled on the sliding sleeve.
5. self-contained rotatable eccentric float shoe according to claim 1, it is characterised in that set on the outer wall of the mandrel
There is the limited ring groove of the fixation spacing ring.
6. self-contained rotatable eccentric float shoe according to claim 1, it is characterised in that the bottom of the fixed cover with
The upper end of the sliding sleeve is connected by screw thread.
7. self-contained rotatable eccentric float shoe according to claim 1, it is characterised in that the sliding sleeve bottom with it is described
Drillable eccentric spherical guide shoe end is connected by screw thread.
8. self-contained rotatable eccentric float shoe according to claim 1, it is characterised in that the mandrel, the fixed cover,
The sliding sleeve and the drillable eccentric spherical guide shoe are made of duralumin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621153947.7U CN206174886U (en) | 2016-10-31 | 2016-10-31 | But self -conductance formula rotate eccentric float shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621153947.7U CN206174886U (en) | 2016-10-31 | 2016-10-31 | But self -conductance formula rotate eccentric float shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206174886U true CN206174886U (en) | 2017-05-17 |
Family
ID=58679364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621153947.7U Expired - Fee Related CN206174886U (en) | 2016-10-31 | 2016-10-31 | But self -conductance formula rotate eccentric float shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206174886U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107227938A (en) * | 2017-07-12 | 2017-10-03 | 中国石油集团西部钻探工程有限公司 | Well rotary guide shoe assembly can be repaired |
| CN107859485A (en) * | 2017-11-21 | 2018-03-30 | 中国石油集团西部钻探工程有限公司 | Rotate freely float shoe assembly |
-
2016
- 2016-10-31 CN CN201621153947.7U patent/CN206174886U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107227938A (en) * | 2017-07-12 | 2017-10-03 | 中国石油集团西部钻探工程有限公司 | Well rotary guide shoe assembly can be repaired |
| CN107227938B (en) * | 2017-07-12 | 2023-07-07 | 中国石油天然气集团有限公司 | Repairable rotary guide shoe assembly for well bore |
| CN107859485A (en) * | 2017-11-21 | 2018-03-30 | 中国石油集团西部钻探工程有限公司 | Rotate freely float shoe assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. |
|
| 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: 20170517 Termination date: 20211031 |