CN104389573A - Inside-bushing staged fracturing fall ball seat type sliding sleeve - Google Patents
Inside-bushing staged fracturing fall ball seat type sliding sleeve Download PDFInfo
- Publication number
- CN104389573A CN104389573A CN201410492008.4A CN201410492008A CN104389573A CN 104389573 A CN104389573 A CN 104389573A CN 201410492008 A CN201410492008 A CN 201410492008A CN 104389573 A CN104389573 A CN 104389573A
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- staged fracturing
- main body
- wall
- magnetic lock
- 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.)
- Pending
Links
- 238000005488 sandblasting Methods 0.000 claims abstract description 15
- 230000005415 magnetization Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/06—Sleeve valves
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Landscapes
- 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)
- Earth Drilling (AREA)
Abstract
The invention discloses an inside-bushing staged fracturing fall ball seat type sliding sleeve. The sliding sleeve is characterized in that a body outer cover is respectively connected with an upper joint and a lower joint; a radial through hole and a sand blasting hole are formed in the upper wall of the body outer cover; a groove is formed in the inner wall of the lower part of the body outer cover; the sliding sleeve is mounted in the body outer cover; radial through holes are evenly distributed in the wall body of the sliding sleeve; magnetic ball locking blocks are mounted in the holes; the inner end walls of the magnetic ball locking blocks are circularly arched; the outer diameter of the sliding sleeve is larger than the inner diameter of the lower joint; when the staged fracturing fall ball seat type sliding sleeve is located in a closed state, the sliding sleeve is connected with the body outer cover through a shearing pin and pressed on the sand blasting hole, the inner ends of the magnetic ball locking blocks are projected on the inner wall of the sliding sleeve, and the inner wall edges of the adjacent magnetic ball locking blocks are pairwise contacted to form closed rings; and when the staged fracturing fall ball seat type sliding sleeve is located in an opening state, the lower end of the sliding sleeve is contacted with the lower joint, and the magnetic ball locking blocks are positioned in the groove and the sliding sleeve. The staged fracturing fall ball seat type sliding sleeve realizes once pipe column packing well shaft staged fracturing in a bushing, and improves the fracturing modification effect.
Description
Technical field
The present invention relates to a kind of underground sliding sleeve that a kind of well fracturing operation uses, in especially a kind of sleeve pipe, staged fracturing comes off spherically seated sliding sleeve.
Background technology
Staged Fracturing Technique In Horizontal Wells is a kind of conventional oilfield stimulation measure, is particularly useful for the exploitation of gas reservoir and fractured reservoir.The method realizing the transformation of staged fracturing in sleeve pipe at present have use bridging plug under enter packing pit shaft in sleeve pipe, carry out perforation, pressure break again, so repeated multiple times.This method needs many times tubing strings to complete, and construct discontinuous, duty cycle is long; And utilize sliding sleeve to carry out the technique of staged fracturing, although can realize one-trip string multistage pressure break, sliding sleeve only can play the effect of sandblasting, can not assist packing pit shaft, easily causes interlayer interference during pressure break, affects fracturing effect.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide staged fracturing in a kind of sleeve pipe to come off spherically seated sliding sleeve, both there is sandblasting function, realize the staged fracturing transformation in sleeve pipe, swollen sealed packer can be assisted again, packing pit shaft, improve fracturing effect.
For achieving the above object, the technical solution used in the present invention is:
In sleeve pipe, staged fracturing comes off spherically seated sliding sleeve, comprise top connection, main body overcoat, sliding sleeve and lower contact, main body overcoat is connected with top connection and lower contact respectively, main body overcoat upper wall has radial direction through hole sandblasting hole, and main body overcoat lower inner wall has groove, and sliding sleeve is arranged on main body jacket internal, uniform radial direction through hole on the wall body of sliding sleeve, be provided with magnetic lock ball block in hole, magnetic lock ball block inner end wall is arc-shaped, and sliding sleeve external diameter is greater than lower contact internal diameter; When staged fracturing come off spherically seated sliding sleeve be in closure state time, sliding sleeve is connected with main body overcoat by shear pin, and sliding sleeve is pressed on sandblasting hole, and magnetic lock ball block the inner protrudes from sliding sleeve inwall, and the inner wall edge of adjacent magnetic lock ball block contacts between two, form closed circle; When staged fracturing come off spherically seated sliding sleeve be in opening time, sliding sleeve lower end contacts with lower contact, and magnetic lock ball block is positioned at groove and sliding sleeve.
In above-mentioned sleeve pipe, staged fracturing comes off spherically seated sliding sleeve, described main body overcoat and top connection, all installs seal between sliding sleeve and lower contact.
In above-mentioned sleeve pipe, staged fracturing comes off spherically seated sliding sleeve, and described main body overcoat is threaded connection with top connection and lower contact respectively, and is strengthened fixing by clamp-screw.
In above-mentioned sleeve pipe, staged fracturing comes off spherically seated sliding sleeve, and described magnetic lock ball bulk matter, through magnetization treatment, firmly can adsorb ball sealer.
In sleeve pipe provided by the invention, staged fracturing comes off spherically seated sliding sleeve, has both had sandblasting function, and can assist swollen sealed packer again, thus realizes one-trip string packing pit shaft staged fracturing in sleeve pipe, improves fracturing reform effect.
Accompanying drawing explanation
In the sleeve pipe that Fig. 1 provides for the embodiment of the present invention, staged fracturing comes off spherically seated shift sleeve structure schematic diagram.
The A-A of Fig. 1 that Fig. 2 provides for the embodiment of the present invention is to sectional view (sliding sleeve be in closure state under, magnetic lock ball block protrudes and closes up).
Fig. 3 is in the structural representation of opening for sliding sleeve that the embodiment of the present invention provides.
In Fig. 3 that Fig. 4 provides for the embodiment of the present invention B-B to sectional view (sliding sleeve be in opening under).
In figure: 1. top connection, 2. main body overcoat, 21. sandblasting holes, 22. grooves, 3. magnetic lock ball block, 4. sliding sleeve, 5. lower contact, 6. clamp-screw, 7. shear pin, 8. seal, 10. ball sealer.
Detailed description of the invention
As Figure 1-4, in sleeve pipe, staged fracturing comes off spherically seated sliding sleeve, comprise top connection 1, main body overcoat 2, sliding sleeve 4 and lower contact 5, main body overcoat 2 is connected with top connection 1 and lower contact 5 respectively, main body overcoat 2 upper wall has radial direction through hole sandblasting hole 21, main body overcoat 2 lower inner wall has groove 22, it is inner that sliding sleeve 4 is arranged on main body overcoat 2, uniform radial direction through hole on the wall body of sliding sleeve 4, magnetic lock ball block 3 is installed in hole, magnetic lock ball block 3 inner end wall is arc-shaped, and sliding sleeve 4 external diameter is greater than lower contact 5 internal diameter; When staged fracturing come off spherically seated sliding sleeve be in closure state time, sliding sleeve 4 is connected with main body overcoat 2 by shear pin 7, sliding sleeve 4 is pressed on sandblasting hole 21, magnetic lock ball block 3 the inner protrudes from sliding sleeve 4 inwall, and the inner wall edge of adjacent magnetic lock ball block contacts between two, thus form the projection of closed circular ring-type; When staged fracturing come off spherically seated sliding sleeve be in opening time, sliding sleeve 4 lower end contacts with lower contact 5, and magnetic lock ball block 3 is positioned at groove 22 and sliding sleeve 4.
Further, described main body overcoat 2 and top connection 1, between sliding sleeve 4 and lower contact 5, seal 8 is all installed.
Further, described main body overcoat 2 is threaded connection with top connection 1 and lower contact 5 respectively, and is strengthened fixing by clamp-screw 6.
In sleeve pipe of the present invention, the come off course of work of spherically seated sliding sleeve of staged fracturing is: staged fracturing in sleeve pipe come off spherically seated sliding sleeve and kit packer, ball seat etc. are connected into completion tubular column, under enter in cased borehole.Ball sealer 10 is dropped in ground in tubing string, the projection that magnetic lock ball block 3 is formed can accept ball sealer 10, reach ball sealer 10 and magnetic lock ball block 3 inwall intimate contact, and magnetic lock ball block 3 material is through magnetization treatment, realize preventing from rolling by magnetic secure lock, thus the seal strengthened herein, effectively reduce over liquid measure.Suppress in tubing string, pressure to act on ball sealer 10 and sliding sleeve 4 and passes to shear pin 7, until shear pin 7 is cut off; Sliding sleeve 4 drives magnetic lock ball block 3 to move down, and final sliding sleeve 4 contacts stopping with lower contact 5 and moves down; Now magnetic lock ball block 3 is contracted in groove 22, and sliding sleeve 4 inwall recovers latus rectum, and ball sealer 10 is shed on string matching instrument ball seat, thus can open the swollen envelope kit packer of pressure, realizes packing pit shaft.Meanwhile, the sandblasting hole 21 on main body overcoat 2 is exposed completely, and sandblasting Path Setup inside and outside tubing string can carry out sandblasting fracturing work.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. in sleeve pipe, staged fracturing comes off spherically seated sliding sleeve, comprise top connection (1), main body overcoat (2), sliding sleeve (4) and lower contact (5), it is characterized in that: main body overcoat (2) is connected with top connection (1) and lower contact (5) respectively, main body overcoat (2) upper wall has radial direction through hole sandblasting hole (21), main body overcoat (2) lower inner wall has groove (22), it is inner that sliding sleeve (4) is arranged on main body overcoat (2), uniform radial direction through hole on the wall body of sliding sleeve (4), magnetic lock ball block (3) is installed in hole, magnetic lock ball block (3) inner end wall is arc-shaped, sliding sleeve (4) external diameter is greater than lower contact (5) internal diameter, when staged fracturing come off spherically seated sliding sleeve be in closure state time, sliding sleeve (4) is connected with main body overcoat (2) by shear pin (7), sliding sleeve (4) is pressed on sandblasting hole (21), magnetic lock ball block (3) the inner protrudes from sliding sleeve (4) inwall, and the inner wall edge of adjacent magnetic lock ball block (3) contacts between two, form closed circle, when staged fracturing come off spherically seated sliding sleeve be in opening time, sliding sleeve (4) lower end contacts with lower contact (5), and magnetic lock ball block (3) is positioned at groove (22) and sliding sleeve (4).
2. in sleeve pipe according to claim 1, staged fracturing comes off spherically seated sliding sleeve, it is characterized in that: described main body overcoat (2) and top connection (1), all install seal (8) between sliding sleeve (4) and lower contact (5).
3. in sleeve pipe according to claim 1 and 2, staged fracturing comes off spherically seated sliding sleeve, it is characterized in that: described main body overcoat (2) is threaded connection with top connection (1) and lower contact (5) respectively, and strengthened by clamp-screw (6) fixing.
4. in sleeve pipe according to claim 3, staged fracturing comes off spherically seated sliding sleeve, it is characterized in that: described magnetic lock ball block (3) material, through magnetization treatment, firmly can adsorb ball sealer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492008.4A CN104389573A (en) | 2014-09-23 | 2014-09-23 | Inside-bushing staged fracturing fall ball seat type sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492008.4A CN104389573A (en) | 2014-09-23 | 2014-09-23 | Inside-bushing staged fracturing fall ball seat type sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104389573A true CN104389573A (en) | 2015-03-04 |
Family
ID=52607522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410492008.4A Pending CN104389573A (en) | 2014-09-23 | 2014-09-23 | Inside-bushing staged fracturing fall ball seat type sliding sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104389573A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401931A (en) * | 2015-11-16 | 2016-03-16 | 中国石油天然气股份有限公司 | Integrated pipe column for casing pipe sliding sleeve fracturing production and fracturing production method for casing pipe sliding sleeve |
| CN109469470A (en) * | 2018-12-20 | 2019-03-15 | 中国海洋石油集团有限公司 | A kind of horizontal well naked eye staged fracturing equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6006838A (en) * | 1998-10-12 | 1999-12-28 | Bj Services Company | Apparatus and method for stimulating multiple production zones in a wellbore |
| CN200949445Y (en) * | 2005-11-24 | 2007-09-19 | 辽河石油勘探局 | Plugging packer for small borehole oil-gas water well |
| CN201574733U (en) * | 2009-12-26 | 2010-09-08 | 赵贵刚 | Underground multifunctional extrusion-washing-discharge device |
| CN202914034U (en) * | 2012-12-03 | 2013-05-01 | 中国石油集团渤海钻探工程有限公司 | Self-expanding ball seat |
| CN203296750U (en) * | 2013-05-29 | 2013-11-20 | 上海优强石油科技有限公司 | Extension-type valving ball seat |
| CN203403872U (en) * | 2013-07-19 | 2014-01-22 | 中国石油集团长城钻探工程有限公司 | Multistage fracturing well completion sliding sleeve device |
| CN203626789U (en) * | 2013-11-15 | 2014-06-04 | 中国石油天然气股份有限公司 | Infinite order fracturing sandblasting sliding sleeve |
| US20140224475A1 (en) * | 2010-03-26 | 2014-08-14 | Petrowell Limited | Downhole Actuating Apparatus |
-
2014
- 2014-09-23 CN CN201410492008.4A patent/CN104389573A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6006838A (en) * | 1998-10-12 | 1999-12-28 | Bj Services Company | Apparatus and method for stimulating multiple production zones in a wellbore |
| CN200949445Y (en) * | 2005-11-24 | 2007-09-19 | 辽河石油勘探局 | Plugging packer for small borehole oil-gas water well |
| CN201574733U (en) * | 2009-12-26 | 2010-09-08 | 赵贵刚 | Underground multifunctional extrusion-washing-discharge device |
| US20140224475A1 (en) * | 2010-03-26 | 2014-08-14 | Petrowell Limited | Downhole Actuating Apparatus |
| CN202914034U (en) * | 2012-12-03 | 2013-05-01 | 中国石油集团渤海钻探工程有限公司 | Self-expanding ball seat |
| CN203296750U (en) * | 2013-05-29 | 2013-11-20 | 上海优强石油科技有限公司 | Extension-type valving ball seat |
| CN203403872U (en) * | 2013-07-19 | 2014-01-22 | 中国石油集团长城钻探工程有限公司 | Multistage fracturing well completion sliding sleeve device |
| CN203626789U (en) * | 2013-11-15 | 2014-06-04 | 中国石油天然气股份有限公司 | Infinite order fracturing sandblasting sliding sleeve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401931A (en) * | 2015-11-16 | 2016-03-16 | 中国石油天然气股份有限公司 | Integrated pipe column for casing pipe sliding sleeve fracturing production and fracturing production method for casing pipe sliding sleeve |
| CN105401931B (en) * | 2015-11-16 | 2018-03-09 | 中国石油天然气股份有限公司 | A kind of sliding sleeve of bushing fracturing integrated pipe column and its fracturing method |
| CN109469470A (en) * | 2018-12-20 | 2019-03-15 | 中国海洋石油集团有限公司 | A kind of horizontal well naked eye staged fracturing equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150304 |
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| RJ01 | Rejection of invention patent application after publication |