CN201144683Y - Fracturing sliding bush sandblast - Google Patents
Fracturing sliding bush sandblast Download PDFInfo
- Publication number
- CN201144683Y CN201144683Y CNU2008200619223U CN200820061922U CN201144683Y CN 201144683 Y CN201144683 Y CN 201144683Y CN U2008200619223 U CNU2008200619223 U CN U2008200619223U CN 200820061922 U CN200820061922 U CN 200820061922U CN 201144683 Y CN201144683 Y CN 201144683Y
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- sliding sleeve
- outer cylinder
- sleeve outer
- urceolus
- sand
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Abstract
The utility model relates to a fracturing sliding sleeve sand blower, which is a core part of a frac-string in petroleum and gas wells transition layer. The utility model comprises a sliding sleeve outer cylinder and a core pipe arranged inside the sliding sleeve outer cylinder. The sliding sleeve outer cylinder and the core pipe are matched with each other in a sliding way. A shear pin is arranged on a mating surface. The wall of the sliding sleeve outer cylinder is provided with a sand blasting port. The upper port of the sliding sleeve outer cylinder has a sealing mating surface which is used to be connected with a starting ball. A plurality of sand blasting ports are arranged on the wall of the sliding sleeve outer cylinder, and the ports are arranged along the circumferential direction of the sliding sleeve outer cylinder. The sand blasting port is a longitudinal slot. The parts which are corresponding to the sand blasting ports on the inner wall of the sliding sleeve outer cylinder are provided with ring shape hollow grooves. The grooves make all sand blasting ports communicate together. The mating surface of the sliding sleeve outer cylinder and the core pipe is provides with a plurality of rubber seal rings with high elasticity. The sand blower has characteristics of anti-blocking, anti-sticking, strong anti-erosion ability to sand-laden fluid and good wear resistance, and is mainly used on the multilayer separate-layer fracturing technology in low permeability and high pressure natural gas well.
Description
Technical field
The utility model belongs to oil, natural gas extraction technical field, relates to a kind of pressure break sliding sleeve sandblaster, and it is that oil, natural gas well commentaries on classics lamination split a core component in the tubing string.
Background technology
In recent years, the key tool that domestic oil gas field is transformed at the separate stratum fracfturing of multiple fracturing well is changeed layer sandblast sliding sleeve, the continuous mutually sandblast sliding sleeve of having developed at the different reservoir feature.Wherein, patent announcement CN2100480U, name is called pressure break with pilot sandblast sliding sleeve, is primarily aimed at wellfracturing usefulness, and this patent was announced in 1992, is used till today always.But along with the development of petroleum industry technology, this product can not satisfy the technological development needs, and the pressure break that especially can not adapt to hypotonic scaled high-pressure natural gas well is changeed layer usefulness.Mainly show:
Hypotonic scaled high-pressure natural gas well is owing to have certain initial production behind the perforation, need to adopt highdensity mud to carry out kill-job, full-bodied mud and when the bottom reservoir is constructed high-intensity proppant particles enter sliding sleeve core and sliding sleeve urceolus gap, cause when changeing layer, the sand card changes layer sandblast sliding sleeve owing to can not effectively be opened, cause to implement transformation to the upper strata, simultaneously because this shift sleeve structure insufficient strength, the load fluid of construction lower floor is to its erosion, and the steel ball that starts sliding sleeve makes the distortion of sliding sleeve core under the High Pressure Difference effect, sliding sleeve lost efficacy, and caused changeing layer construction failure.
In addition, the flow area of the sand jet outlet of this sandblast sliding sleeve is less, and sand card phenomenon also takes place easily.
Summary of the invention
The purpose of this utility model is at above problem, and particularly in scaled high-pressure natural gas well, the sandblast sliding sleeve provides a kind of pressure break sliding sleeve sandblaster because of the problem that the sand card lost efficacy and can not normally open.Characteristics such as this sliding sleeve sandblaster has antiseized card, anti-adhesion, anti-load fluid erosion is strong, abrasion resistance is good.
Technical solution of the present utility model is:
A kind of pressure break sliding sleeve sandblaster comprises the sliding sleeve urceolus and is arranged in the interior core pipe of sliding sleeve urceolus that the two is slidingly matched, and fitting face is provided with shear pin; Has sand jet outlet on the wall of described sliding sleeve urceolus; The upper port of sliding sleeve urceolus has the face that is sealed and matched that is used to accept the startup ball; Sand jet outlet on the described sliding sleeve outer tube wall has a plurality of, along sliding sleeve urceolus circumferential arrangement.
Sand jet outlet on the described sliding sleeve outer tube wall is vertical slotted hole.
The position of corresponding sand jet outlet on the inwall of described sliding sleeve urceolus has ring-type and empties groove, and all sand jet outlets are communicated with.
The face of being slidingly matched of described sliding sleeve urceolus and core pipe is provided with sealing ring.
Described sealing ring has multiple tracks, is arranged in the above and following face that is slidingly matched of sand jet outlet.
Described sealing ring is the high elastic rubber sealing ring.
It is taper seat that described sliding sleeve urceolus upper port is used to accept the face of being sealed and matched that starts ball.
Useful technique effect of the present utility model:
The sliding sleeve sandblaster is not only the access road that fracturing fluid when transforming a last target zone enters the stratum, is again to return the passage that discharge opeing, oil gas enter oil pipe after construction is finished, and whether the unlatching of sliding sleeve is to implement to change the layer key of success of constructing.This pressure break sliding sleeve sandblaster (antiseized card changes lamination and splits control sliding sleeve sandblaster) mainly is made up of sliding sleeve urceolus, sliding sleeve, on the sliding sleeve urceolus elongated opening is arranged, the opening number is 4, the opening specification is 20mm * 80mm, effectively increase the area of passage of perforate, reduced the restriction loss when liquid passes through sand jet outlet; On the sliding sleeve urceolus, near the sand jet outlet, empty groove in the place that contacts with the sliding sleeve core, emptying the degree of depth is 2mm, for freeing in and out of high viscosity kill mud, fracturing propping agents provides passage, viscosity mechanical admixture etc. enters between sliding sleeve core and the sliding sleeve urceolus in proppant when having prevented construction and the high density kill mud, cause the sand card, cause the sliding sleeve core not move down; Chamfering is carried out on sliding sleeve core top, starts ball and can form good plugging effect by the chamfering conical surface and sliding sleeve core, can reduce the erosion of work progress load fluid to sliding sleeve simultaneously; Multi-stage sealed on the sliding sleeve core is high elastic rubber, effectively to playing sealing function between sliding sleeve core and the sliding sleeve urceolus, the viscosity mechanical admixture enters between sliding sleeve core and the sliding sleeve urceolus in proppant when preventing pressing crack construction and the high density kill mud, cause the sand card, cause the sliding sleeve core can not effectively move down under pressure.This pressure break sliding sleeve sandblaster is mainly used on the multi-layer fracturing technology of hypotonic scaled high-pressure natural gas well.
Compare with conventional commentaries on classics layer sandblast sliding sleeve with present oil gas field, the utility model mainly is to have taken precautions against effectively the high viscosity kill mud, the sand card that fracturing propping agents cause the sliding sleeve core, can realize disposable effective unlatching of sliding sleeve, supporting use by the utility model and multi-layer fracturing tubing string, the use of more conventional sliding sleeve, effectively raise the construction success rate, thereby simplified the oil and gas development flow chart, shortened the construction operation cycle, reduced kill-job, repeatedly transform injury to reservoir, reduce development cost, improved the whole development level and the development benefit of oil gas field.
Description of drawings
Fig. 1 is the structural representation of this pressure break sliding sleeve sandblaster.
Code name implication among the figure:
1-top connection screw thread; 2-sliding sleeve urceolus; The 3-sliding sleeve core chamfering conical surface; The last seal of 4-; The 5-shear pin; Seal among the 6-; 7-empties groove; The 8-sand jet outlet; 9-sliding sleeve core pipe; The 10-lower seal; 11-lower contact screw thread.
The specific embodiment
Referring to Fig. 1: this pressure break sliding sleeve sandblaster mainly by sliding sleeve urceolus 2, sliding sleeve core pipe 9, go up seal 4, middle seal 6, lower seal 10, shear pin 5 and sand jet outlet 8 and form.
Be connected with oil pipe in the pressure break pipe string by top connection screw thread 1 with multiple fracturing tubing string fit applications the time, lower union joint screw thread 11 links to each other with bottom oil pipe, packer or the seat of receiving etc.The microscler sand jet outlet 8 that four symmetries are arranged on the sliding sleeve urceolus 2, sand jet outlet 8 A/Fs are 20mm, length is 80mm.For being slidingly matched, adopt 2 shear pins 5 that sliding sleeve core pipe 9 and sliding sleeve urceolus 2 are fixed together between sliding sleeve core pipe 9 and the sliding sleeve urceolus 2, shear pin 5 diameters are 4mm, and cutting off pressure is about 14MPa.2 of sliding sleeve core pipe 9 and sliding sleeve urceolus have seal 4 on the twice on top, shear pin 5 position, seal 6 in bottom, shear pin 5 position has together, and sliding sleeve core pipe 9 and sliding sleeve urceolus 2 have twice lower seal 10 in sand jet outlet 8 positions; Last seal 4, middle seal 6 lower seal 10 are the high elastic rubber sealing ring.
Act on the sliding sleeve core pipe 9 by supporting startup ball (not shown) during application, rely on the sealing function of the sliding sleeve core chamfering conical surface 3, pressurize by oil pipe, sliding sleeve core pipe 9 upper and lower pressure reduction reach shear pin 5 cut off pressure the time, shear pin 5 fractures, pressure continue to promote sliding sleeve core pipe 9 and moves down, and exposes the sand jet outlet 8 on the sliding sleeve urceolus 2, for fracturing fluid or oil gas provide flow channel.Last seal 4, middle seal 6 lower seal 10, to playing sealing function between sliding sleeve core pipe 9 and the sliding sleeve urceolus 2, the viscosity mechanical admixture enters between sliding sleeve core pipe 9 and the sliding sleeve urceolus 2 in proppant when preventing pressing crack construction and the high density kill mud, cause the sand card, sliding sleeve core pipe 9 can not move down and expose sand jet outlet 8, causes changeing layer operation failure.
The position of corresponding sand jet outlet 8 on the inwall of sliding sleeve urceolus 2 has and empties groove 7, and emptying the degree of depth is 2mm.This is emptied groove 7 and is ring-type, all sand jet outlets 8 are communicated with, its effect is to free in and out passage for high viscosity kill mud, fracturing propping agents provide, viscosity mechanical admixture etc. enters between sliding sleeve core pipe 9 and the sliding sleeve urceolus 2 in proppant when preventing to construct and the high density kill mud, causes the sand card.
Claims (7)
1. a pressure break sliding sleeve sandblaster comprises the sliding sleeve urceolus and is arranged in the interior core pipe of sliding sleeve urceolus, and the two is slidingly matched, and fitting face is provided with shear pin; Has sand jet outlet on the wall of described sliding sleeve urceolus; The upper port of sliding sleeve urceolus has the face that is sealed and matched that is used to accept the startup ball; It is characterized in that: the sand jet outlet on the described sliding sleeve outer tube wall has a plurality of, along sliding sleeve urceolus circumferential arrangement.
2. pressure break sliding sleeve sandblaster according to claim 1 is characterized in that: the sand jet outlet on the described sliding sleeve outer tube wall is vertical slotted hole.
3. pressure break sliding sleeve sandblaster according to claim 1 is characterized in that: the position of corresponding sand jet outlet on the inwall of described sliding sleeve urceolus, and have ring-type and empty groove, all sand jet outlets are communicated with.
4. pressure break sliding sleeve sandblaster according to claim 1 is characterized in that: the face of being slidingly matched of described sliding sleeve urceolus and core pipe is provided with sealing ring.
5. pressure break sliding sleeve sandblaster according to claim 4, it is characterized in that: described sealing ring has multiple tracks, is arranged in the above and following face that is slidingly matched of sand jet outlet.
6. according to claim 4 or 5 described pressure break sliding sleeve sandblasters, it is characterized in that: described sealing ring is the high elastic rubber sealing ring.
7. pressure break sliding sleeve sandblaster according to claim 1 is characterized in that: it is taper seat that described sliding sleeve urceolus upper port is used to accept the face of being sealed and matched that starts ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200619223U CN201144683Y (en) | 2008-01-16 | 2008-01-16 | Fracturing sliding bush sandblast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200619223U CN201144683Y (en) | 2008-01-16 | 2008-01-16 | Fracturing sliding bush sandblast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201144683Y true CN201144683Y (en) | 2008-11-05 |
Family
ID=40081559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200619223U Expired - Fee Related CN201144683Y (en) | 2008-01-16 | 2008-01-16 | Fracturing sliding bush sandblast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201144683Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733790A (en) * | 2011-04-15 | 2012-10-17 | 盐城市佳鑫石化机械制造有限公司 | Sliding sleeve sand blower with hydraulic anchor |
| CN103362488A (en) * | 2012-03-31 | 2013-10-23 | 大港油田集团有限责任公司 | Sand blasting device allowing fracturing sliding sleeve to be fished |
| CN103375147A (en) * | 2012-04-24 | 2013-10-30 | 中国石油天然气股份有限公司 | Underground multistage voltage division switch device |
| CN103470241A (en) * | 2013-08-21 | 2013-12-25 | 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 | Dual-cluster hydraulic jet tubular column and dual-cluster hydraulic jet annulus fracturing method |
| CN104100249A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Sleeve sliding sleeve without limited segment fracturing |
| CN105443103A (en) * | 2015-09-10 | 2016-03-30 | 盐城市畅海精密机械有限公司 | Double-layer channel flow complementary type pressure guide sand blaster |
| US9708889B2 (en) | 2011-06-22 | 2017-07-18 | China Petroleum & Chemical Corporation | Sleeve fracturing assembly, device using the same and method for using the same |
| CN108868694A (en) * | 2018-08-21 | 2018-11-23 | 中国石油天然气股份有限公司 | Fracturing sliding sleeve |
-
2008
- 2008-01-16 CN CNU2008200619223U patent/CN201144683Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733790A (en) * | 2011-04-15 | 2012-10-17 | 盐城市佳鑫石化机械制造有限公司 | Sliding sleeve sand blower with hydraulic anchor |
| US9708889B2 (en) | 2011-06-22 | 2017-07-18 | China Petroleum & Chemical Corporation | Sleeve fracturing assembly, device using the same and method for using the same |
| US10450837B2 (en) | 2011-06-22 | 2019-10-22 | China Petroleum & Chemical Corporation | Sleeve fracturing assembly, device using the same and method for using the same |
| CN103362488A (en) * | 2012-03-31 | 2013-10-23 | 大港油田集团有限责任公司 | Sand blasting device allowing fracturing sliding sleeve to be fished |
| CN103362488B (en) * | 2012-03-31 | 2017-02-15 | 大港油田集团有限责任公司 | Sand blasting device allowing fracturing sliding sleeve to be fished |
| CN103375147A (en) * | 2012-04-24 | 2013-10-30 | 中国石油天然气股份有限公司 | Underground multistage voltage division switch device |
| CN104100249A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Sleeve sliding sleeve without limited segment fracturing |
| CN104100249B (en) * | 2013-04-03 | 2016-06-15 | 中国石油天然气股份有限公司 | Sleeve sliding sleeve without limited segment fracturing |
| CN103470241A (en) * | 2013-08-21 | 2013-12-25 | 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 | Dual-cluster hydraulic jet tubular column and dual-cluster hydraulic jet annulus fracturing method |
| CN105443103A (en) * | 2015-09-10 | 2016-03-30 | 盐城市畅海精密机械有限公司 | Double-layer channel flow complementary type pressure guide sand blaster |
| CN108868694A (en) * | 2018-08-21 | 2018-11-23 | 中国石油天然气股份有限公司 | Fracturing sliding sleeve |
| CN108868694B (en) * | 2018-08-21 | 2020-09-04 | 中国石油天然气股份有限公司 | Fracturing sliding sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20081105 Termination date: 20130116 |