CN107587860B - A kind of double sliding sleeves based on compression packer set locking mechanism - Google Patents
A kind of double sliding sleeves based on compression packer set locking mechanism Download PDFInfo
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- CN107587860B CN107587860B CN201711049994.6A CN201711049994A CN107587860B CN 107587860 B CN107587860 B CN 107587860B CN 201711049994 A CN201711049994 A CN 201711049994A CN 107587860 B CN107587860 B CN 107587860B
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- sliding sleeve
- central tube
- closing piece
- locking mechanism
- sliding sleeves
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- 230000007246 mechanism Effects 0.000 title claims abstract description 26
- 230000006835 compression Effects 0.000 title claims abstract description 23
- 238000007906 compression Methods 0.000 title claims abstract description 23
- 230000033001 locomotion Effects 0.000 claims abstract description 5
- 238000012856 packing Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 abstract description 14
- 241001074085 Scophthalmus aquosus Species 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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Abstract
The present invention devises a kind of double sliding sleeves based on compression packer and sets locking mechanism, including at least central tube, the first sliding sleeve, the second sliding sleeve and helmet, first sliding sleeve, the second sliding sleeve are fixedly connected by several first shear pins, it is fixed between first sliding sleeve and central tube by the second shear pin, central tube lower end radial equipartition has several holes and built-in closing piece, closing piece outwardly convex on central tube, and radial motion can be generated on central tube, center bottom of the tube is connected with helmet.The present invention solves existing compression packer and by closing piece locks the structure of setting mechanism that there are performances is unstable, does not have many drawbacks such as sand-proof function, using tool, there are two sliding sleeves and the shear pin of fixed described two sliding sleeves, oil jacket liquid level when boring under control is poor, liquid level in oil pipe is set to be lower than oil jacket annulus liquid level, surge pressure in reduction tool；And prevent packer midway in lower brill from setting by double sliding sleeve locking mechanisms, while there is sand-proof function.
Description
Technical field
The present invention relates to the sliding sleeves for being applied to packer to set locking mechanism, and in particular to one kind is based on compression packer
Double sliding sleeves set locking mechanism.
Background technique
Casing tube well-completion horizontal well often carries out zonal isolation pressing crack construction with the types such as Y111 compression packer at present, herein
When class packer enters well, large scale tool and wall friction generate resistance in tubing string, and packing element may be made to generate compression and even sat
When sealing, while boring under conventional tubing transmission, certain oil jacket liquid level difference and surge pressure can be generated since running speed is too fast,
Hydraulic anchor etc. in tubing string is set to start the lower tool midway unlatching of required pressure, it will cause slacking off, tool abnormalities to wear
Phenomena such as.
By the prior art, the oil jacket liquid level difference and surge pressure problem occurred in lower brill can be by overcurrent in reduction tool
Area is controlled, and existing by closing piece lock the structure of setting mechanism that there are performances is unstable, does not have sand-proof function
Etc. many drawbacks.
Summary of the invention
Present invention aim to address the above-mentioned problems in the prior art, are based on for this purpose, the present invention devises one kind
Double sliding sleeves of compression packer set locking mechanism.
The technical solution adopted in the present invention is as follows:
A kind of double sliding sleeves based on compression packer set locking mechanism, include at least central tube, the first sliding sleeve, second
Sliding sleeve and helmet, first sliding sleeve, the second sliding sleeve are fixedly connected by several first shear pins, between the first sliding sleeve and central tube
It is fixed by the second shear pin, central tube lower end radial equipartition has several holes and a built-in closing piece, closing piece outwardly convex on central tube,
And radial motion can be generated on central tube, center bottom of the tube is connected with helmet.
The first sliding sleeve inner hole has a step surface, forms coaxial cooperation with the second sliding sleeve.
The central tube is threadedly coupled with helmet, and has certain axial gap between central tube and helmet, the axial gap
It is built-in with C-shaped ring.
For internal diameter under the C-shaped ring free state less than the first sliding sleeve lower end outer diameter, the outer diameter of C-shaped ring is greater than central tube
Bottom diameter.
The first sliding sleeve periphery is provided with upper end, annular groove at lower end two, and upper recess width is greater than closing piece
Width, upper recess depth are greater than the height that closing piece protrudes from central tube, and lower end recess width is greater than C-shaped ring width, compression
Before packer starting is set, the protrusion of closing piece is withstood in upper recess.
Sequentially connected top connection, packing element, rubber tube seat and the lower contact from top to bottom of the outer layer of the central tube, it is described
Closing piece and rubber tube seat inner hole, and closing piece lower end is contacted with lower contact upper surface in face or line.
The face that the closing piece is contacted with lower contact is the inclined-plane for having certain angle.
The equivalent shear surface of second shear pin is less than or equal to the equivalent shear surface of the first shear pin.
It is sealed between first sliding sleeve and the second sliding sleeve by sealing ring.
The upper end of the central tube and the first sliding sleeve is sealed by sealing ring.
Beneficial effects of the present invention:
The present invention devises a kind of double sliding sleeves based on compression packer and sets locking mechanism, and packer is entering well process
In will not compress packing element always or set, reduce liquid level and surge pressure in oil pipe, prevent the midway of other tools from start, control
Oil jacket liquid level when boring under system is poor, so that liquid level in oil pipe is lower than oil jacket annulus liquid level, while reducing surge pressure in tool；Pass through
Double sliding sleeve locking mechanisms prevent packer midway in lower brill from setting, while having sand-proof function.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings.
Fig. 1 is the structural schematic diagram that a kind of double sliding sleeves based on compression packer of the present invention set locking mechanism.
Description of symbols:
1, top connection；2, retaining ring；3, central tube；4, packing element；5, rubber tube seat；6, the first sliding sleeve；7, closing piece；8, it second cuts
Nail；9, the first shear pin；10, the second sliding sleeve；11, C-shaped ring；12, back of the body cap；13, lower contact；14, anti-back ring；15, double sliding sleeves are set
Locking mechanism.
Specific embodiment
Embodiment 1:
The present embodiment provides a kind of double sliding sleeves of compression packer to set locking mechanism, as shown in Figure 1, double sliding sleeves are set
Locking mechanism 15 includes at least central tube 3, the first sliding sleeve 6, the second sliding sleeve 10 and helmet 12, and first sliding sleeve 6, second is sliding
Set 10 is fixedly connected by several first shear pins 9, fixed by the second shear pin 8 between the first sliding sleeve 6 and central tube 3, under central tube 3
End radial equipartition has several holes and built-in closing piece 7, the outwardly convex on central tube 3 of closing piece 7, and can generate diameter on central tube 3
To movement, 3 bottom of central tube is threadedly coupled with helmet 12, has certain axial gap between central tube 3 and helmet 12, for fixing C
11 axial displacement of shape ring.
The present embodiment combination Y111 packer construction and construction technology are illustrated (about the specific of packer in this structure
Structure such as top connection 1, retaining ring 2, packing element 4, lower contact 13, anti-back ring 14 are packer existing structure, do not do and chat in detail
State):
Packer is connected to tubing string corresponding position by top connection 1 and lower contact 13, and packer is in going down process, closing piece
7 contact with lower contact 13, and prevent it to upper end axial displacement, and packer can not be set at this time, the minor diameter of the second sliding sleeve 10
It crosses liquid channel and plays the role of liquid level and surge pressure in control tool.
After tool servant's designated depth, pump note in oil pipe, as pressure rise first shears through the second shear pin 8, two first is sliding
The 6, second sliding sleeve of set 10 while downlink, until C-shaped ring 11 enters 6 lower section groove of the first sliding sleeve, the first sliding sleeve 6 can not axis at this time
To movement, pressure is persistently increased, and the first shear pin 9 is cut, and the second sliding sleeve 10 comes downwards to packer lower contact 13 hereinafter, wherein second
Shear pin 8 and the first shear pin 9, which are successively cut, to be realized by the difference of sliding sleeve forced area and the shear pin section of shear.
At this point, providing unidirectional support by ending tool under packer, apply bit pressure, packer lower contact 13 squeezes closing piece 7
It is allowed to move radially to 6 groove of the first sliding sleeve, lower contact 13 drives rubber tube seat 5 to move axially to upper end, squeezes packing element 4 and realizes
It sets.At this point, being provided with sealing ring at 6 upper end of the first sliding sleeve and 3 cooperation of central tube, it is provided at lower end and 13 cooperation of lower contact
Dustband makes entire locking mechanism realize sand controlling result, while can prevent the displacement of the first sliding sleeve 6 from relocking closing piece influence and sit
Envelope.When removing seal for packer, tool upper end bit pressure is removed, upper lifting pipe post can make lower contact 13 and glue under the self weight of lower ending tool
5 downlink of cylinder base realizes deblocking.
Embodiment 2:
On the basis of embodiment 1,6 periphery of the first sliding sleeve be provided with upper end, annular groove at lower end two, on
Recess width is held to be greater than 7 width of closing piece, upper recess depth is greater than the height that closing piece 7 protrudes from central tube 3, lower end recess width
Greater than 11 width of C-shaped ring, before compression packer starting is set, the protrusion of closing piece 7 is withstood in upper recess.
It is close that between first sliding sleeve 6 and the second sliding sleeve 10 and upper end of central tube 3 and the first sliding sleeve 6 passes through sealing ring
Envelope, the equivalent shear surface of all second shear pins 8 are less than or equal to the equivalent shear surface of all first shear pins 9；The C-shaped ring 11 is certainly
By the internal diameter under state less than 6 lower end outer diameter of the first sliding sleeve, the outer diameter of C-shaped ring 11 is greater than 3 bottom diameter of central tube；In described
Sequentially connected top connection 1, packing element 4, rubber tube seat 5 and the lower contact 13 from top to bottom of the outer layer of heart pipe 3, the closing piece 7 and glue
5 inner hole of cylinder base, and 7 lower end of closing piece is contacted with 13 upper surface of lower contact in face or line, closing piece 7 is contacted with lower contact 13
Face is the inclined-plane for having certain angle.
There are two sliding sleeves and the shear pin of fixed described two sliding sleeves using tool by the present invention, control oil jacket liquid level when lower bore
Difference makes liquid level in oil pipe be lower than oil jacket annulus liquid level, while reducing surge pressure in tool, while passing through double sliding sleeve locking mechanisms
Prevent packer midway in lower brill from setting.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.Given this situation, we devise one
Double sliding sleeves of the kind based on compression packer set locking mechanism.
Claims (7)
1. a kind of double sliding sleeves based on compression packer set locking mechanism, it is characterised in that: double sliding sleeves set locking machine
Structure (15) includes at least central tube (3), the first sliding sleeve (6), the second sliding sleeve (10) and helmet (12), first sliding sleeve (6),
Second sliding sleeve (10) is fixedly connected by several first shear pins (9), passes through the second shear pin between the first sliding sleeve (6) and central tube (3)
(8) fixed, central tube (3) lower end radial equipartition has several holes and built-in closing piece (7), closing piece (7) convex on central tube (3)
It rises, and radial motion can be generated on central tube (3), central tube (3) bottom is connected with helmet (12)；The central tube (3)
It is threadedly coupled with helmet (12), and has certain axial gap between central tube (3) and helmet (12), which is built-in with C-shaped
Ring (11)；Internal diameter under described C-shaped ring (11) free state is less than the first sliding sleeve (6) lower end outer diameter, the outer diameter of C-shaped ring (11)
Greater than central tube (3) bottom diameter；Described the first sliding sleeve (6) periphery is provided with upper end, annular groove at lower end two, upper end
Recess width is greater than closing piece (7) width, and upper recess depth is greater than the height that closing piece (7) protrude from central tube (3), lower end groove
Width is greater than C-shaped ring (11) width, and before compression packer starting is set, the protrusion of closing piece (7) is withstood in upper recess.
2. a kind of double sliding sleeves based on compression packer according to claim 1 set locking mechanism, it is characterised in that:
Described the first sliding sleeve (6) inner hole has a step surface, forms coaxial cooperation with the second sliding sleeve (10).
3. a kind of double sliding sleeves based on compression packer according to claim 1 set locking mechanism, it is characterised in that:
The outer layer of the central tube (3) is connected with top connection (1), packing element (4), rubber tube seat (5) and lower contact in turn from top to bottom
(13), the closing piece (7) and rubber tube seat (5) inner hole, and closing piece (7) lower end and lower contact (13) upper surface are in face or line
Contact.
4. a kind of double sliding sleeves based on compression packer according to claim 3 set locking mechanism, it is characterised in that:
The face that the closing piece (7) is contacted with lower contact (13) is the inclined-plane for having certain angle.
5. a kind of double sliding sleeves based on compression packer according to claim 1 set locking mechanism, it is characterised in that:
The equivalent shear surface of second shear pin (8) is less than or equal to the equivalent shear surface of the first shear pin (9).
6. a kind of double sliding sleeves based on compression packer according to claim 1 set locking mechanism, it is characterised in that:
It is sealed between first sliding sleeve (6) and the second sliding sleeve (10) by sealing ring.
7. a kind of double sliding sleeves based on compression packer according to claim 1 set locking mechanism, it is characterised in that:
The upper end of the central tube (3) and the first sliding sleeve (6) is sealed by sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049994.6A CN107587860B (en) | 2017-10-31 | 2017-10-31 | A kind of double sliding sleeves based on compression packer set locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049994.6A CN107587860B (en) | 2017-10-31 | 2017-10-31 | A kind of double sliding sleeves based on compression packer set locking mechanism |
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| Publication Number | Publication Date |
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| CN107587860A CN107587860A (en) | 2018-01-16 |
| CN107587860B true CN107587860B (en) | 2019-11-08 |
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| CN201711049994.6A Active CN107587860B (en) | 2017-10-31 | 2017-10-31 | A kind of double sliding sleeves based on compression packer set locking mechanism |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115234192A (en) * | 2022-08-29 | 2022-10-25 | 承德石油高等专科学校 | Flexible packer suitable for directional well |
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|---|---|---|---|---|
| CN201778751U (en) * | 2010-08-03 | 2011-03-30 | 贺胜堂 | Slide bushing type drill-free stage collar |
| CN202064885U (en) * | 2011-04-26 | 2011-12-07 | 中国石油集团川庆钻探工程有限公司 | Stage cementing device without drilling plugs |
| CN202338279U (en) * | 2011-10-17 | 2012-07-18 | 中国石油天然气股份有限公司 | Variable-diameter fracturing valve |
| CN103089227A (en) * | 2011-11-03 | 2013-05-08 | 中国石油天然气股份有限公司 | Large drift diameter drilling-free segmented fracture well completion sliding sleeve device |
| CN103510912A (en) * | 2012-06-19 | 2014-01-15 | 中国石油化工股份有限公司 | Sliding sleeve assembly, device and system comprising sliding sleeve assemblies, and using method of system |
| CN103775025A (en) * | 2014-03-03 | 2014-05-07 | 青岛海蚨奥工贸有限公司 | Classifying hoop |
| CN204899844U (en) * | 2015-08-24 | 2015-12-23 | 西安奥腾石油工程技术服务有限公司 | Hydraulic pressure trompil formula is bound round in grades |
| CN105464618A (en) * | 2016-01-14 | 2016-04-06 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Compression type packer setting locking starting mechanism |
| CN205778702U (en) * | 2016-05-19 | 2016-12-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of have the Y111 type compression packer setting startup lock function |
-
2017
- 2017-10-31 CN CN201711049994.6A patent/CN107587860B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201778751U (en) * | 2010-08-03 | 2011-03-30 | 贺胜堂 | Slide bushing type drill-free stage collar |
| CN202064885U (en) * | 2011-04-26 | 2011-12-07 | 中国石油集团川庆钻探工程有限公司 | Stage cementing device without drilling plugs |
| CN202338279U (en) * | 2011-10-17 | 2012-07-18 | 中国石油天然气股份有限公司 | Variable-diameter fracturing valve |
| CN103089227A (en) * | 2011-11-03 | 2013-05-08 | 中国石油天然气股份有限公司 | Large drift diameter drilling-free segmented fracture well completion sliding sleeve device |
| CN103510912A (en) * | 2012-06-19 | 2014-01-15 | 中国石油化工股份有限公司 | Sliding sleeve assembly, device and system comprising sliding sleeve assemblies, and using method of system |
| CN103775025A (en) * | 2014-03-03 | 2014-05-07 | 青岛海蚨奥工贸有限公司 | Classifying hoop |
| CN204899844U (en) * | 2015-08-24 | 2015-12-23 | 西安奥腾石油工程技术服务有限公司 | Hydraulic pressure trompil formula is bound round in grades |
| CN105464618A (en) * | 2016-01-14 | 2016-04-06 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Compression type packer setting locking starting mechanism |
| CN205778702U (en) * | 2016-05-19 | 2016-12-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of have the Y111 type compression packer setting startup lock function |
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| CN107587860A (en) | 2018-01-16 |
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Effective date of registration: 20211013 Address after: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: 710018 room 1203, Changqing building, Changqing Xing Long Yuan District, Xi'an, Shaanxi Patentee before: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
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