CN104278967B - Pressure-bearing device for Cementing screen casing - Google Patents
Pressure-bearing device for Cementing screen casing Download PDFInfo
- Publication number
- CN104278967B CN104278967B CN201310282586.0A CN201310282586A CN104278967B CN 104278967 B CN104278967 B CN 104278967B CN 201310282586 A CN201310282586 A CN 201310282586A CN 104278967 B CN104278967 B CN 104278967B
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- sliding sleeve
- pressure
- housing
- ball
- hole
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The present invention proposes a kind of pressure-bearing device for Cementing screen casing, belongs to field of oil drilling.Device includes：Tubular shell, housing have the first groove and the first radial direction through hole on inwall；Adjacent housings tubulose sliding sleeve on its inside, sliding sleeve have the second radial direction through hole；The ball seat that builds the pressure being fixed on the inwall of sliding sleeve by shear pin；Spacing ball, the spacing ball penetrate sliding sleeve, and are engaged with the first groove of housing by leaning for ball seat, so as to fix sliding sleeve relative to housing；And the blind plate being arranged in tubulose sliding sleeve；Wherein, first radial direction through hole is in alignment with each other in an initial condition with the second radial direction through hole, shear pin is constructed to be permeable to receive to build the pressure in the ball seat that builds the pressure ball cut off after being built the pressure, and thus causes the first radial direction through hole to misplace with the second radial direction through hole, and cuts off the fluid communication inside and outside housing.This device can favorably discharge waterpower and agitate, and prevent sizing collar from shifting to an earlier date perforate, it is ensured that the operation of rise envelope and the safety of packer.
Description
Technical field
The present invention relates to a kind of pressure-bearing device for Cementing screen casing, more particularly to a kind of for screen casing at the top of
The pressure-bearing device of cementing technique, belongs to field of oil drilling.
Background technology
With reference to Fig. 1, the cementing technique at the top of screen casing is typically adopted includes screen casing 1, blind plate 2, packer 3,4 and of sizing collar
The pipe string combination 10 of sleeve pipe 5.By pipe string combination 10 down to design well depth.Realize building the pressure by the injection mud into pipe.By two
Packer 3 is successively risen envelope by pressure rating, opens the hole of sizing collar 4.First, realize building the pressure by blind plate 2, continue to build the pressure
Packer 3 is risen envelope by pressure reduction, then is built the pressure to 18Mpa, cut off the shear pin of sizing collar 4 by pressure reduction by about 9MPa, is realized point
The perforate of level hoop 4.Effect of the blind plate 2 in this pipe string 10 be：Realize building the pressure under sleeve pipe to after design attitude；In sizing collar
After 4 perforates, in pipe string cyclic process, the solid phase in mud, desilting is made not to wait until in screen casing 1.
Due to carrying, draw necessary to setting of casing operation, operation of stopping, this knot of blind plate 2 in the process pipe string in prior art
Inside and outside for sleeve pipe liquid is kept apart by structure, has simultaneously formed surge pressure, swabbing pressure, and these pressure cannot discharge, and is formed
Pressure reduction, causes sizing collar 4 to shift to an earlier date perforate, it is impossible to which rise sealed packer 3, it is impossible to completes well cementing operation.This is brought to petroleum works
Huge loss.
Also do not have to discharge the device that waterpower as above is agitated completely in currently available technology, need design so
Device solving this problem.
Content of the invention
In order to solve the problems of the prior art as above, i.e., in order to effectively be released in institute under the compartmentation of blind plate
The waterpower for causing is agitated, and prevent corresponding waterpower from agitating caused by sizing collar shift to an earlier date perforate problem, the present invention propose
A kind of pressure-bearing device for Cementing screen casing.
The present invention proposes a kind of pressure-bearing device for Cementing screen casing, including：Tubular shell, housing have inwall
On the first groove and the first radial direction through hole；Adjacent housings tubulose sliding sleeve on its inside, sliding sleeve have the second radial direction through hole；
The ball seat that builds the pressure being fixed on the inwall of sliding sleeve by shear pin；Spacing ball, the spacing ball penetrate sliding sleeve, and pass through ball seat
Lean and engage with the first groove of housing, so as to sliding sleeve is fixed relative to housing；And be arranged in blind in tubulose sliding sleeve
Plate；Wherein, the first radial direction through hole is in alignment with each other in an initial condition with the second radial direction through hole, it is allowed to inside and outside housing form fluid
Connection, shear pin are constructed to be permeable to receive to build the pressure in the ball seat that builds the pressure ball cut off after being built the pressure, and cause the ball seat being capable of axle
Discharge to slip and spacing ball is leaned, so that spacing ball departs from the first groove and sliding sleeve axially can be moved down, thus
Cause the first radial direction through hole and the dislocation of the second radial direction through hole, and cut off the fluid communication inside and outside housing.
In one embodiment, pressure-bearing device also includes the retreating prevention mechanism being arranged on the sliding sleeve, the retreating prevention mechanism energy
Enough engage with housing after sliding sleeve axial movement to a certain extent, so as to anti-anti-skid sheath is up.
In one embodiment, retreating prevention mechanism includes the radially outer raised and position on the outer peripheral face of tubulose sliding sleeve
The second groove on tubulose sliding sleeve outer peripheral face, wherein described projection can be contracted in second groove and in the tubulose
Sliding sleeve descending to a certain extent after eject from second groove with the 3rd groove in the inner walls that clicks into place
In.
In one embodiment, the cross-sectional configuration of the first groove is the radius of curvature arc consistent with the radius of spacing ball
Shape.In one embodiment, the arc is minor arc.
In one embodiment, sliding sleeve is fixed against mutually rotation by anti-rotation nail and housing key slot type, and anti-rotation nail is worn
Cross housing and click into place in the axially extending draw-in groove on sliding sleeve outer wall.
In one embodiment, between housing and sliding sleeve, sealing ring is provided between ball seat and sliding sleeve.Ensure that sealing is made with this
Industry.
In one embodiment, sliding sleeve, spacing ball, housing and ball seat are provided with lubricating grease each other.Part is ensured with this
Between smooth break-in.
In one embodiment, the screw-type connection of sealing, and/or housing upper and lower side are taken between blind plate and the sliding sleeve
It is provided with connection screw thread.
In one embodiment, ball seat sealed can be contacted with spheroid.
Above-mentioned technical characteristic can by various technically feasible in the way of be combined to produce new embodiment, as long as can reach
Arrive the purpose of the present invention.
During the setting of casing of screen casing crest water flooding bricklayer's's skill, according to the holding for Cementing screen casing of the present invention
Pressure device can be eliminated in sleeve pipe due to the caused surge pressure of the packing effect of blind plate, swabbing pressure etc., released with reaching
The effect that the power that discharges water is agitated.In this way it is possible to the situation that sizing collar shifts to an earlier date perforate is prevented effectively from, safe solid so as to ensure
Well and effective subsequent construction.
Description of the drawings
Hereinafter the present invention will be retouched in more detail based on only non-limiting embodiment refer to the attached drawing
State.Wherein：
Fig. 1 shows the pipe string combination of the cement industry being used in prior art at the top of screen casing；
Fig. 2 schematically illustrates the pressure-bearing device for Cementing screen casing according to the present invention.
In figure, identical component is indicated by identical reference.Accompanying drawing is not drawn according to actual ratio.
Specific embodiment
Carry out to introduce in detail the present invention below with reference to accompanying drawings.
Fig. 2 schematically illustrates the pressure-bearing device 20 for Cementing screen casing according to the present invention.
With reference to Fig. 2, what pressure-bearing device 20 was generally set to sleeve type lead to during waterpower is agitated pipe nipple for eliminating.Under
During sleeve pipe, lead in pipe nipple body.
Device 20 is included positioned at outermost tubular shell 29.29 upper and lower side of housing is provided with connection screw thread.29 top of housing
Inwall on have the first groove.First groove may be about the recess of the whole circle in inner walls, the first groove
Cross section can be arc, the radius of curvature of the arc and the spacing ball 24 being adapted to which（It is described in detail below）Radius phase
Unanimously, and the arc is preferably minor arc（It is less than 180 °）, to facilitate spacing ball 24 to drop.Have first radially to lead in the middle part of housing 29
Hole.
Device 20 also includes adjacent to housing 29 and the sliding sleeve 25 of tubulose on its inside.Sliding sleeve 25 has second radially
Through hole.First radial direction through hole and the second radial direction through hole co-axially align, form the fluid passage 26 inside and outside pipe nipple, are trapped with eliminating
The pressure that waterpower produced by during pipe is agitated.
Sliding sleeve 25 is fixed with 29 key slot type of housing by anti-rotation nail 28, prevents mutually rotation.Wherein anti-rotation nail 28 is penetrated
Housing 29, stretches from the inwall of housing 29 and snaps in the draw-in groove on 25 outer wall of sliding sleeve, and the draw-in groove is in the cunning
Cover the axially extending indenture along the sliding sleeve 25 on 25 outer wall.
Device 20 also includes adjacent to sliding sleeve 25 and the tube tee 21 for accepting spheroid 30 on its inside.Spheroid
30 can be copper ball.Ball seat 21 is fixed on sliding sleeve 25 by shear pin 22.Shear pin 22 can be copper shear pin.
Shear pin 22 penetrates sliding sleeve 25, stretches out from the inwall of sliding sleeve 25 and from the outer wall of ball seat 21 in insertion ball seat 21.
Device 20 also includes the spacing ball 24 being adapted with the first groove on 29 inwall of housing.Spacing ball 24 is located at sliding sleeve
In space in 25, i.e., spacing ball 24 passes through sliding sleeve 25.The outer wall of ball seat 21 bear against spacing ball 24, and the outside of spacing ball 24
It is constrained to engage with the first groove of housing 29, sliding sleeve 25 can be fixed relative to housing 29 by this way.
Device 20 also includes being arranged in and can lead to the blind of part in separating in tubulose sliding sleeve 25 perpendicular to axial direction
Plate 23.Blind plate 23 can be threadedly coupled using sealing with sliding sleeve 25.
Device 20 also includes the retreating prevention mechanism 27 up for anti-anti-skid sheath 25.In the embodiment shown in Figure 2, anti-back machine
Structure 27 includes radially outer raised on the outer peripheral face of tubulose sliding sleeve 25 and on 25 outer peripheral face of tubulose sliding sleeve the
Two grooves, sliding sleeve 25 downwards produce displacement when the projections collapse in the second groove, when 25 downward generation position of sliding sleeve
Move so that when retreating prevention mechanism 27 is moved at the 3rd groove 31 of the whole circle in 29 lower inner wall of housing, the projection can
Eject and snap in the 3rd groove 31 to prevent sliding sleeve 25 up from the second groove.
In one embodiment, sliding sleeve 25, spacing ball 24, housing 29 and ball seat 21 are provided with high temperature resistance lubrication each other
Fat.
Between sliding sleeve 25 and housing 29, the sealing of whole work progress is realized between sliding sleeve 25 and ball seat 21 by sealing ring.
The operating process of device 20 is described below.
After setting of casing is finished, into sleeve pipe, with the copper ball 30 of 21 sealed cooperation of ball seat, input can treat that copper ball 30 falls
After entering ball seat 21, suppressed to pressure is set by drilling fluid in sleeve pipe, the shear pin 22 between ball seat 21 and sliding sleeve 25 is cut
Disconnected, ball seat 21 is snapped down at the ball seat limit base in sliding sleeve 25, makes 24 stress of spacing ball unbalance, it is impossible to limit sliding sleeve 25 and shell again
The relative position of body 29.Ball seat 21 drives sliding sleeve 25 to be snapped down to the second footpath for making sliding sleeve 25 at the sliding sleeve limit base in pipe nipple body
Misplace to the first radial direction through hole of the through hole with housing 29, realize the closing of pipe nipple inside and outside.Closing circulation is come downwards in sliding sleeve 25
During hole 26, retreating prevention mechanism 27 plays a role（For example projection is snapped in the 3rd groove 31 on housing 29）, anti-anti-skid sheath 25 is up.
Can be arranged at the blind plate 2 of Fig. 1 according to assembly of the invention 20, agitate for waterpower is eliminated when building the pressure.
Waterpower sloshing problem can be eliminated well according to assembly of the invention 20, while with preventing cement mortar from returning
Function, and simple structure, easy to operate such that it is able to and during solving screen casing crest water flooding bricklayer's's skill setting of casing, sizing collar is carried
The problems such as front perforate.
Although by reference to preferred embodiment, invention has been described, in the situation without departing from the scope of the present invention
Under, various improvement can be carried out to which and part therein can be replaced with equivalent.The invention is not limited in public in text
The specific embodiment that opens, but all technical schemes including falling within the claims.
Claims (9)
1. a kind of pressure-bearing device for Cementing screen casing, including：
Tubular shell, the housing have the first groove and the first radial direction through hole on inwall；
Adjacent housing tubulose sliding sleeve on its inside, the sliding sleeve have the second radial direction through hole；
The ball seat that builds the pressure being fixed on the inwall of the sliding sleeve by shear pin；
Spacing ball, the spacing ball penetrate the sliding sleeve, and by first groove leaned with the housing of the ball seat
Engagement, so that fix the sliding sleeve relative to the housing；
The blind plate being arranged in the tubulose sliding sleeve；
Wherein, first radial direction through hole is in alignment with each other in an initial condition with second radial direction through hole, it is allowed in housing
Profile communication,
The shear pin is constructed to be permeable to receive to build the pressure in the ball seat that builds the pressure ball cut off after being built the pressure, and causes described
Ball seat can slide axially and discharge and the spacing ball is leaned, so that the spacing ball departs from the first groove and described
Sliding sleeve axially can be moved down, and thus cause first radial direction through hole to misplace with second radial direction through hole, and cut off in housing
Outer fluid communication,
The pressure-bearing device also includes the retreating prevention mechanism being arranged on the sliding sleeve, and the retreating prevention mechanism can be in the sliding sleeve axle
Engage with the housing to after movement to a certain extent, so as to prevent the sliding sleeve up.
2. pressure-bearing device according to claim 1, it is characterised in that the retreating prevention mechanism is included positioned at the tubulose sliding sleeve
Outer peripheral face on radially outer raised and the second groove on the tubulose sliding sleeve outer peripheral face, wherein described raised energy
Enough be contracted in second groove and eject from second groove after the tubulose sliding sleeve is descending to a certain extent with
In the 3rd groove clicked into place in the inner walls.
3. pressure-bearing device according to claim 1 and 2, it is characterised in that the cross-sectional configuration of first groove is song
The rate radius arc consistent with the radius of the spacing ball.
4. pressure-bearing device according to claim 3, it is characterised in that the arc is minor arc.
5. pressure-bearing device according to claim 1 and 2, it is characterised in that the sliding sleeve is followed closely by anti-rotation and the housing
Key slot type is fixed against mutually rotation, the axle that the anti-rotation is followed closely through the housing and clicked into place on the sliding sleeve outer wall
To in the draw-in groove for extending.
6. pressure-bearing device according to claim 1 and 2, it is characterised in that between the housing and the sliding sleeve, the ball
Sealing ring is provided between seat and the sliding sleeve.
7. pressure-bearing device according to claim 1 and 2, it is characterised in that the sliding sleeve, the spacing ball, the housing
Lubricating grease is provided with each other with the ball seat.
8. pressure-bearing device according to claim 1 and 2, it is characterised in that take between the blind plate and the sliding sleeve close
The screw-type connection of envelope, and/or the housing upper and lower side is provided with connection screw thread.
9. pressure-bearing device according to claim 1 and 2, it is characterised in that the ball seat can be sealed with the ball that builds the pressure
Formula is contacted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310282586.0A CN104278967B (en) | 2013-07-05 | 2013-07-05 | Pressure-bearing device for Cementing screen casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310282586.0A CN104278967B (en) | 2013-07-05 | 2013-07-05 | Pressure-bearing device for Cementing screen casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104278967A CN104278967A (en) | 2015-01-14 |
| CN104278967B true CN104278967B (en) | 2017-03-15 |
Family
ID=52254258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310282586.0A Active CN104278967B (en) | 2013-07-05 | 2013-07-05 | Pressure-bearing device for Cementing screen casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104278967B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285530B (en) * | 2015-05-27 | 2018-09-25 | 中国石油化工股份有限公司 | A kind of pipe nipple apparatus entering well for tail pipe |
| CN108005611B (en) * | 2017-11-30 | 2020-03-24 | 中国石油集团渤海钻探工程有限公司 | Claw sleeve type stage cementing device |
| CN114592813B (en) * | 2022-04-18 | 2023-11-21 | 大庆长垣能源科技有限公司 | Well flushing device for screen pipe well completion |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB622404A (en) * | 1946-04-04 | 1949-05-02 | Baker Oil Tools Inc | Cementing casings and the like in wells |
| US3948322A (en) * | 1975-04-23 | 1976-04-06 | Halliburton Company | Multiple stage cementing tool with inflation packer and methods of use |
| SU1687767A1 (en) * | 1988-12-28 | 1991-10-30 | Казахское Научно-Производственное Объединение "Казрудгеология" | Method and apparatus for injecting mixed tamping into a bed |
| CN2132829Y (en) * | 1992-04-10 | 1993-05-12 | 胜利石油管理局钻井总公司固井公司 | Differential pressure staged cementing unit |
| RU2233375C1 (en) * | 2003-03-20 | 2004-07-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Device for additional casing pipe cementing |
| CN2736525Y (en) * | 2004-09-02 | 2005-10-26 | 中国石油化工股份有限公司 | Two-stage cementing device |
| CN201851078U (en) * | 2010-11-21 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Underground isolation bridge plug |
-
2013
- 2013-07-05 CN CN201310282586.0A patent/CN104278967B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB622404A (en) * | 1946-04-04 | 1949-05-02 | Baker Oil Tools Inc | Cementing casings and the like in wells |
| US3948322A (en) * | 1975-04-23 | 1976-04-06 | Halliburton Company | Multiple stage cementing tool with inflation packer and methods of use |
| SU1687767A1 (en) * | 1988-12-28 | 1991-10-30 | Казахское Научно-Производственное Объединение "Казрудгеология" | Method and apparatus for injecting mixed tamping into a bed |
| CN2132829Y (en) * | 1992-04-10 | 1993-05-12 | 胜利石油管理局钻井总公司固井公司 | Differential pressure staged cementing unit |
| RU2233375C1 (en) * | 2003-03-20 | 2004-07-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Device for additional casing pipe cementing |
| CN2736525Y (en) * | 2004-09-02 | 2005-10-26 | 中国石油化工股份有限公司 | Two-stage cementing device |
| CN201851078U (en) * | 2010-11-21 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Underground isolation bridge plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104278967A (en) | 2015-01-14 |
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