CN202914064U - Ball injection sliding sleeve applied to oil-gas well staged fracturing selective switch - Google Patents
Ball injection sliding sleeve applied to oil-gas well staged fracturing selective switch Download PDFInfo
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- CN202914064U CN202914064U CN 201220613308 CN201220613308U CN202914064U CN 202914064 U CN202914064 U CN 202914064U CN 201220613308 CN201220613308 CN 201220613308 CN 201220613308 U CN201220613308 U CN 201220613308U CN 202914064 U CN202914064 U CN 202914064U
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- sliding sleeve
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Abstract
The utility model discloses a ball injection sliding sleeve applied to an oil-gas well staged fracturing selective switch. The ball injection sliding sleeve applied to the oil-gas well staged fracturing selective switch comprises a sleeve and a lower connector which is connected with the lower end of the sleeve, a core pipe is arranged in an inner cavity of the upper portion of the sleeve in a sleeved mode, a ball seat is arranged in a core pipe inner cavity, a sealing assembly, a shear pin and a spring ring are respectively arranged on the peripheral wall of the core pipe, and the core pipe and the ball seat are placed in a sleeve cavity in which sand blasting holes are formed. The sleeve can be opened and closed and adjust the open area of the sand blasting holes, so that the requirements of urgent water plugging, production adjusting and production allocating are met, operation cost is reduced, operation time is shortened, and the defect that a foreign ball injection starting sliding sleeve special for a horizontal well is too high in implementation cost is avoided.
Description
Technical field
The utility model relates to open hole well staged fracturing tool field in the oil field development, but a kind of pitching sliding sleeve that is applied to Oil/gas Well staged fracturing selector switch specifically.
Background technology
In the open hole well staged fracturing tool, the fracturing string that is comprised of packer, ball seat-sliding sleeve pulls instrument and compares with hydraulic jetting fracturing instrument, coiled tubing, uses at most, and successful well is inferior also maximum.But up to now, such instrument still has many unsatisfactory places, also can not satisfy the needs of oil-gas field development far away.Such as using at present maximum ball seat-sliding sleeves, once pitching is opened after the sliding sleeve, just can not close again, if a large amount of water outlets of this interval often are difficult to process; In addition.If this interval production capacity is very high, if do not add control, can damage the structure of payzone, or counter other low pressure intervals that flow to, these all are harmful to.And ball seat-sliding sleeve of using at present is helpless to above-mentioned drawback.
The utility model content
The utility model purpose is that the deficiency for present shift sleeve structure, function provides a kind of and opens the sliding sleeve that can close, can regulate sandblast hole area of passage, thereby realizes urgent water blockoff, transfers and produces the requirement of joining product.
The utility model solves above-mentioned technical problem by following technical proposals:
But be applied to the pitching sliding sleeve of Oil/gas Well staged fracturing selector switch, comprise sleeve and be connected in the lower contact of sleeve lower end; Described upper cartridge inner chamber cover has the core pipe, and the core tube cavity is provided with ball seat, is respectively arranged with seal assembly, shear pin and turn on the described core pipe periphery wall, and the core pipe is placed in the sleeve cavity that has the sandblast hole together with ball seat.
Further, in the described sliding sleeve:
The porous matrix of described ball seat for being prepared from by iron-base powder metallurgy material, its inner surface is provided with hard alloy layer or ceramic coating.
In the described sleeve cavity, lower contact top is provided with thrust ring.
Described seal assembly is lined with two ptfe plastic sheets by O type circle both sides and consists of.
Described turn is arranged between the two seals assembly, and the turn both sides are the plane, and outer rim is the two-way conical surface.
This sliding sleeve porous matrix can collapse under the air-flow corrosiveness that produces oil in inside and outside simultaneous oxidation corrosion, forms at short notice the production passage that satisfies commercial hydrocarbon flow, and the minimizing similar products need to be lowered to the drilling tool brill and mill the operation that ball seat keeps latus rectum.Its pitching sliding sleeve can open and close at any time, utilizes the sandblast hole in the sliding sleeve sleeve to regulate sandblast hole area of passage, thereby realizes urgent water blockoff, transfers and produces the requirement of joining product.This sliding sleeve has reduced operating cost, has shortened the activity duration, has avoided the too high deficiency of pitching open sliding sleeve implementation cost of foreign level well special use.
Description of drawings
Fig. 1 is staged fracturing shift sleeve structure schematic diagram of the present utility model.
Fig. 2 (a) and Fig. 2 (b) are respectively the local enlarged diagram of turn of the present utility model.
Among the figure: 1, sleeve; 2, ball seat; 3, seal assembly; 4, shear pin; 5, core pipe; 6, turn; 7, thrust ring; 8, lower contact.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further details.
As shown in Figure 1, but this is applied to the pitching sliding sleeve of Oil/gas Well staged fracturing selector switch, comprises sleeve 1 and is connected in the lower contact 8 of sleeve 1 lower end; Sleeve 1 top inner chamber cover has core pipe 5, and core pipe 5 inner chambers are provided with ball seat 2, are respectively arranged with seal assembly 3, shear pin 4 and turn 6 on core pipe 5 periphery walls, and core pipe 5 is placed in sleeve 1 cavity that has the sandblast hole together with ball seat 2.
The porous matrix of ball seat 2 for being prepared from by iron-base powder metallurgy material of this sliding sleeve, its inner surface is provided with hard alloy layer or ceramic coating.In sleeve 1 cavity, lower contact 8 tops are provided with thrust ring 7.Seal assembly 3 is lined with two ptfe plastic sheets by O type circle both sides and consists of.
Working condition when being depicted as turn and outside being fitted into the core pipe, being stuck in the sleeve positioning groove such as Fig. 2 (a).
Shown in Fig. 2 (b), turn 6 is arranged between the two seals assembly 3, and turn 6 both sides are the plane, and outer rim is the two-way conical surface.
One end of the sleeve 1 of staged fracturing sliding sleeve has the sandblast hole of circle or bar shaped.The ball seat 2 usefulness sealing cylinders core pipe 5 that is threaded has the twice ring-shaped groove in the core pipe 5, provide handgrip for using later on coiled tubing anchor fluke instrument.Outside the core pipe 5, in the middle of two seals assembly 3, offer cannelure one, turn 6 is housed in the cannelure, the both sides of turn 6 are the plane, are slidingly matched with cannelure, and turn 6 outer rims are two-way conical surfaces.Offer four road positioning grooves in the sleeve 1, groove width is slightly less than the thickness of turn 6, and the part of the conical surface is entered in the groove, mobile core pipe 5 must overcome the elastic force of turn 6, so realized the location of having ready conditions of core pipe 5.Corresponding sandblast hole, positioning groove position, four roads aperture in various degree, such as 100%, 75%, 50%, 25% etc.Certainly can return to 0 aperture, namely close fully.Coiled tubing anchor fluke instrument can utilize this ring-shaped groove mobile core pipe, the purpose that realizes closing the sandblast hole or regulate sandblast hole aperture.
Ensure that turn works with acting freely, must guarantee the collection turn cannelure in can not advance sand, for this reason, the utility model is respectively established seal assembly one in the both sides of turn cannelure, this two seals assembly has consisted of the sand control barrier of turn, guarantees simultaneously the sealing of core pipe and sleeve.
The above-mentioned seal assembly of mentioning is made of an O type circle and two ptfe plastic sheets, the ptfe plastic sheet is contained in the both sides of O type circle, like this, can guarantee that O type circle is not scratched by sharp edge by cannelure and sandblast hole the time, and can guarantee that O type circle is not scratched by the groove sharp edge when pressure-bearing.
During work, the left end with ball seat 2 screw-in core pipes 5 puts in place.Quadruplet seal assembly 3 is packed in four cannelures at core pipe 5 two ends.With the turn 6 outer respective annular groove of core pipe 5 right-hand members of packing into, because turn has elastic force, need Constant load this moment, and turn is remained in the cannelure.
With the said modules sleeve 1 of packing into, until turn 6 is pressed in the cannelure fully by sleeve 1 inwall, promote said modules to the extreme position of sleeve 1 left end.In this process, turn 6 needs through four road positioning grooves in the sleeve 1, one groove of every process, and thrust all can once rise to and recover, and writes down the numerical value that rises to, the reference during as later coiled tubing anchor fluke construction.Screw in shear pin 4, reinstall thrust ring 7, adjust pad 8 and lower contact 9; So far, finished the assembling of sliding sleeve.
Carry out the well section of fracturing reform at needs,---sliding sleeve---packer---sliding sleeve---packer according to packer ... order connect into continuously fracturing string, pressurization makes packer setting, and according to order input pressure break ball from small to large, the pressure break ball sealing gets lodged in the ball of corresponding size and takes, under hydraulic action, ball seat drives the core pipe and moves, and cuts off after the shear pin, and the core pipe reaches the extreme position of right-hand member, this moment, all opened in the sandblast hole, has realized the pressure break of this interval.Finish step by step pressure break to each interval with this.After finishing the pressure break of each interval, ball seat can be removed with the brill milling method, or adopts degradable material voluntarily damage within the short time of going into operation that drives a well.
Need urgent water blockoff if find certain interval, or certain interval need to be regulated output, can be lowered to coiled tubing anchor fluke instrument, after instrument puts in place, transmit hydraulic pressure signal (or cable is set) with coiled tubing anchor fluke is opened, catch the twice groove of setting in the core pipe, lift coiled tubing, the core pipe is moved, thereby realize closing the sandblast hole or adjust sandblast hole aperture.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model; can not assert that the specific embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by claims of submitting to.
Claims (5)
1. but be applied to the pitching sliding sleeve of Oil/gas Well staged fracturing selector switch, it is characterized in that: comprise sleeve (1) and be connected in the lower contact (8) of sleeve (1) lower end; Described sleeve (1) top inner chamber cover has core pipe (5), core pipe (5) inner chamber is provided with ball seat (2), be respectively arranged with shear pin (4), turn (6) and a plurality of seal assembly (3) on described core pipe (5) periphery wall, core pipe (5) is placed in sleeve (1) cavity that has the sandblast hole together with ball seat (2).
2. but the pitching sliding sleeve that is applied to Oil/gas Well staged fracturing selector switch according to claim 1, it is characterized in that: the porous matrix of described ball seat (2) for being prepared from by iron-base powder metallurgy material, its inner surface is provided with hard alloy layer or ceramic coating.
3. but the pitching sliding sleeve that is applied to Oil/gas Well staged fracturing selector switch according to claim 1 is characterized in that: in described sleeve (1) cavity, lower contact (8) top is provided with thrust ring (7).
4. but the pitching sliding sleeve that is applied to Oil/gas Well staged fracturing selector switch according to claim 1, it is characterized in that: described seal assembly (3) is lined with two ptfe plastic sheets by O type circle both sides and consists of.
But 5. the pitching sliding sleeve that is applied to Oil/gas Well staged fracturing selector switch according to claim 1, it is characterized in that: described turn (6) is arranged between the two seals assembly (3), and turn (6) both sides are the plane, and outer rim is the two-way conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220613308 CN202914064U (en) | 2012-11-16 | 2012-11-16 | Ball injection sliding sleeve applied to oil-gas well staged fracturing selective switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220613308 CN202914064U (en) | 2012-11-16 | 2012-11-16 | Ball injection sliding sleeve applied to oil-gas well staged fracturing selective switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914064U true CN202914064U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220613308 Expired - Fee Related CN202914064U (en) | 2012-11-16 | 2012-11-16 | Ball injection sliding sleeve applied to oil-gas well staged fracturing selective switch |
Country Status (1)
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|---|---|
| CN (1) | CN202914064U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481454A (en) * | 2014-12-09 | 2015-04-01 | 中国石油集团川庆钻探工程有限公司 | Sliding sleeve structure for permanent completion and application method thereof |
| CN104854301A (en) * | 2013-09-20 | 2015-08-19 | 弗洛泊威尔技术公司 | System and method for fracturing of oil and gas wells |
| CN107120088A (en) * | 2016-02-25 | 2017-09-01 | 中国石油化工股份有限公司 | Seal receptacle and ball sealer |
| CN114198063A (en) * | 2021-12-15 | 2022-03-18 | 德州地平线石油科技股份有限公司 | Fracturing device suitable for coal bed gas exploitation |
| CN114542010A (en) * | 2022-03-09 | 2022-05-27 | 西安赛瑞油气技术服务有限公司 | Stepless differential sliding sleeve for hydraulic fracturing |
-
2012
- 2012-11-16 CN CN 201220613308 patent/CN202914064U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104854301A (en) * | 2013-09-20 | 2015-08-19 | 弗洛泊威尔技术公司 | System and method for fracturing of oil and gas wells |
| CN104854301B (en) * | 2013-09-20 | 2018-09-25 | 弗洛泊威尔技术公司 | System and method for pressure break oil and natural gas well |
| CN104481454A (en) * | 2014-12-09 | 2015-04-01 | 中国石油集团川庆钻探工程有限公司 | Sliding sleeve structure for permanent completion and application method thereof |
| CN104481454B (en) * | 2014-12-09 | 2017-07-14 | 中国石油集团川庆钻探工程有限公司 | Permanent well completion shift sleeve structure and its application method |
| CN107120088A (en) * | 2016-02-25 | 2017-09-01 | 中国石油化工股份有限公司 | Seal receptacle and ball sealer |
| CN114198063A (en) * | 2021-12-15 | 2022-03-18 | 德州地平线石油科技股份有限公司 | Fracturing device suitable for coal bed gas exploitation |
| CN114198063B (en) * | 2021-12-15 | 2022-11-15 | 德州地平线石油科技股份有限公司 | Fracturing device suitable for coal bed gas exploitation |
| CN114542010A (en) * | 2022-03-09 | 2022-05-27 | 西安赛瑞油气技术服务有限公司 | Stepless differential sliding sleeve for hydraulic fracturing |
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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 |
Granted publication date: 20130501 Termination date: 20161116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |