CN202645503U - Bowling-type fracture sliding bush for oil and gas well - Google Patents
Bowling-type fracture sliding bush for oil and gas well Download PDFInfo
- Publication number
- CN202645503U CN202645503U CN 201220298287 CN201220298287U CN202645503U CN 202645503 U CN202645503 U CN 202645503U CN 201220298287 CN201220298287 CN 201220298287 CN 201220298287 U CN201220298287 U CN 201220298287U CN 202645503 U CN202645503 U CN 202645503U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- fracturing
- sliding bush
- inner sliding
- inwall
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Taps Or Cocks (AREA)
Abstract
The utility model relates to a bowling-type fracture sliding bush for an oil and gas well. The bowl-type fracture sliding bush comprises a fixed outer sliding bush and an inner sliding bush which is connected to the inner wall of the outer sliding bush through a shear pin, wherein the outer sliding bush is provided with a spray hole; and the inner wall of the inner sliding bush is provided with a fishing structure used for taking out the inner sliding bush from the fracture sliding bush. The bowling-type fracture sliding bush for the oil and gas well can be used for effectively solving the problem that a sand pipe is blocked by sand, and is simple in structure and convenient in operation.
Description
Technical field
The utility model relates to a kind of fracturing sliding bush, particularly a kind of ball-throwing type fracturing sliding bush for Oil/gas Well.
Background technology
At present, Oil/gas Well separate stratum fracfturing technique mainly adopts ball-throwing type sliding sleeve separate stratum fracfturing job practices.Be provided with ball seat at this sliding sleeve, drop into the valve ball that mates with corresponding ball seat size by ground, and under the pressurized conditions of ground, sliding sleeve is opened, form the pressure break passage.
After the multistage pressing crack construction finishes, need to carry out the fracturing fluid recovery (backflow) operation to the construction well, the fracturing string that then trips out in the well just can carry out the later stage production operation.In the fracturing fluid recovery (backflow) process, usually the part proppant is carried out the stratum by fracturing fluid, and is trapped in the annular space between fracturing string and the horizontal wellbore.The delay meeting of proppant forms that many places are piled up and with the annular space landfill, simultaneously because valve ball and the ball seat of sliding sleeves at different levels are in the sealed engagement state, so that the inner chamber of fracturing string also blocks at the horizontal segment of well.Like this, only two spaces, down-hole cause ground to carry out the sand-flushing operation to the proppant in the shaft bottom entirely by shutoff, and proppant is stranded in the pit shaft, so that can't will propose ground on the fracturing string, cause sand card tubing string, have a strong impact on later stage production.
In the document of prior art, multiple fracturing sliding bush has been proposed also.For example Chinese patent 201020685685.5 discloses a kind of " valving claw locking ball injection type sand blasting sliding sleeve for horizontal well fracturing ", and this sliding sleeve has locking function, avoids sliding sleeve mobile in the axial direction, and the shutoff sand jet outlet affects pressing crack construction.Inwall at this sliding sleeve urceolus is provided with the ring-type locking slot, and the sliding sleeve top is provided with a minute claw.In use, ground pitching and making in the fracturing string builds the pressure, and after pin was cut off, pressure promoted valve seat and moves down.After dividing claw and urceolus locking slot to meet, realize locking thereby be connected together each other.When sand card tubing string occurs when, because the interior valve ball of sliding sleeve and ball seat are in the sealed engagement state, so that the fracturing string inner chamber blocks, can't carry out the sand-flushing operation, sand is stranded in the pit shaft, can't go up pressure-raising and split tubing string.
Chinese patent 201020187726.8 discloses a kind of " ball seat type fracturing slide sleeve ", and when this sliding sleeve was configured to open operation, ball seat did not fall into the shaft bottom, impacts can for the construction in later period operation.Fluted on the inwall of the splicing sleeve below the sliding sleeve pipe, sliding sleeve Guan Buhui counter motion and close pressure break side opening on the adapter sleeve in work progress, but do not consider how not solve tubing string sand card problem.
Chinese patent 201020685585.2 discloses a kind of " differential pressure open sliding sleeve for horizontal well fracturing ", and this sliding sleeve does not have ball socket structure, does not need special pitching operation, but relies on the area difference of lower section on the inner sliding sleeve to open sliding sleeve.This sliding sleeve has the locking of moving down, simple in structure, easy to operate characteristics, but does not consider how not solve tubing string sand card problem.
Chinese patent 200820061922.3 discloses a kind of " fracturing sliding bush sandblast ", and it comprises the sliding sleeve urceolus and be arranged in core pipe in the sliding sleeve urceolus, and the two is slidingly matched, and fitting face is provided with shear pin.Have sand jet outlet on the wall of sliding sleeve urceolus, the upper port of sliding sleeve urceolus has be used to the face that is sealed and matched of accepting valve ball.Sand jet outlet is configured to vertical slotted hole, and its quantity can be a plurality of, and along sliding sleeve urceolus circumferential arrangement.At the inwall of sliding sleeve urceolus, have ring-type corresponding to the position of sand jet outlet and empty groove so that all sand jet outlets are communicated with.The face of being slidingly matched at sliding sleeve urceolus and core pipe is provided with multiple tracks high elastic rubber sealing ring.The characteristics such as this fracturing sliding bush sandblast has antiseized card, anti-adhesion, anti-load fluid erosion is strong, abrasion resistance is good, but do not consider how not solve sand card tubing string problem.
Therefore, be badly in need of a kind ofly in fracturing operation, can solve the fracturing device of sand card tubing string problem.
The utility model content
For above-mentioned problem, the utility model proposes a kind of ball-throwing type fracturing sliding bush for Oil/gas Well, it can effectively solve the problem of sand card tubing string.
According to the utility model, a kind of ball-throwing type fracturing sliding bush for Oil/gas Well has been proposed, comprise fixing outer sliding sleeve and be connected to inner sliding sleeve on the outer sliding sleeve inwall by shear pin.Wherein, the inwall at inner sliding sleeve is provided with the salvaging structure of taking out from fracturing sliding bush for inner sliding sleeve.
When described fracturing sliding bush was in original state, described inner sliding sleeve had blocked spray-hole; When dropping into valve ball, when building the pressure to the pressure of being scheduled in oil pipe, described shear pin is cut off, and inner sliding sleeve moves towards the downstream and spray-hole is exposed, and then sets up the pressure break passage; When sand card tubing string occurs when, by fishing tool inner sliding sleeve is pulled out and well-flushing to take out tubing string.
In this application, term " original state " refers to the state before fracturing sliding bush is opened.
In one embodiment, salvage groove in the upstream region of the inwall that structure is formed in described inner sliding sleeve.In a preferred embodiment, the upstream extremity of this groove consists of back-off, inner sliding sleeve can be taken out by fishing tool when sand card tubing string occurs.
In one embodiment, the downstream of groove is connected with the inwall formation arc transition of inner sliding sleeve.This arc transition connected mode is so that percussion that valve ball in the downstream direction motion process, is subject to is minimum, and helps the sealed engagement of valve ball and ball seat.
In one embodiment, the downstream area at the inwall of inner sliding sleeve is provided with ball seat.In a preferred embodiment, this ball seat is that small end is towards the taper ball seat in downstream.This ball seat can with the valve ball sealed engagement, thereby in oil pipe, build the pressure to open sliding sleeve.
In one embodiment, ball seat and inner sliding sleeve are into a single integrated structure.This structure has made things convenient for the moulding of ball seat and inner sliding sleeve, and so that the assembling of fracturing sliding bush is more convenient.
In one embodiment, nozzle is installed in spray-hole.Nozzle so that fracturing fluid can in oil pipe, spray with higher speed, to realize perforation.Nozzle also can use the hardness higher material to make, thereby prolongs the application life of fracturing sliding bush.After nozzle damages, only need to change nozzle, and do not need to change whole fracturing sliding bush in addition, reduced cost.
In one embodiment, outer sliding sleeve and inner sliding sleeve are for being slidingly matched.In a preferred embodiment, on the fitting face of inner sliding sleeve, also be furnished with at least sealing ring at outer sliding sleeve.This sealing ring guarantees can leakage at the joint of outer sliding sleeve and inner sliding sleeve, thereby to guarantee that inner sliding sleeve can move the smooth opening spray-hole towards downstream direction smoothly.
Inner sliding sleeve in one embodiment, is provided with step at the downstream end place of outer sliding sleeve inwall, so that only can move in this outer sliding sleeve.
In the utility model, in this application, term " downstream " and " upstream " are as reference take the of the fracturing fluid flow direction injected from well head.
Compared with prior art, of the present utility modelly preferably be, when sand card tubing string occurs, by this inner sliding sleeve of salvaging out the inner chamber of oil pipe be communicated with.Cooperate again clean-out service, the sand setting in the pit shaft can be flushed out ground, thereby solve the problem of sand card tubing string.The mode of the nozzle of being made by the higher material of hardness is installed in spray-hole, can prolongs the application life of fracturing sliding bush, and after nozzle is worn, only need to change nozzle and do not need to change whole fracturing sliding bush, thereby reduced cost.Can also realize the Oil/gas Well separate stratum fracfturing by ball seat and valve ball that employing is complementary.In addition, fracturing sliding bush of the present utility model also has safe and reliable, simple in structure, easy to operate advantage.
Description of drawings
Come the utility model is described in further detail below in conjunction with accompanying drawing, wherein:
Fig. 1 is the schematic diagram according to fracturing sliding bush of the present utility model;
Fig. 2 is the enlarged drawing of regional I among Fig. 1.
In the drawings, identical member is indicated by identical Reference numeral.Accompanying drawing is not according to the scale of reality.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 has shown according to the ball-throwing type fracturing sliding bush 10 for Oil/gas Well of the present utility model.Fracturing sliding bush 10 comprises fixing outer sliding sleeve 11 and is connected to inner sliding sleeve 13 on outer sliding sleeve 11 inwalls by shear pin 14, is provided with a plurality of spray-holes 12 at outer sliding sleeve 11.Wherein, be provided with the salvaging structure of taking out from fracturing sliding bush 10 for inner sliding sleeve 13 at inner sliding sleeve 13 inwalls.
As shown in Figure 1, salvaging structure is the groove 18 that is formed in the upstream region of inwall of inner sliding sleeve 13.In a preferred embodiment, the angle of the upstream sidewall 19 of groove 18 and the bottom surface of groove 18 is less than 90 °, and namely the upstream extremity of groove 18 consists of back-off, as shown in Figure 2.With when sand card tubing string occurs, the fishing tool (not shown) can hook the back-off of inner sliding sleeve 13 and inner sliding sleeve 13 is salvaged out.To salvage structure and also can be salvaging groove or other the functionally similar structures that on inner sliding sleeve 13 sidewalls, forms separately with being appreciated that.In another embodiment, the downstream end of groove 18 is that arc transition is connected with inner sliding sleeve 13 inwalls.This arc transition connected mode is so that percussion that valve ball 16 in the downstream direction motion process, is subject to is minimum, and helps the sealed engagement of valve ball 16 and ball seat 17.
A plurality of spray-holes 12 on outer sliding sleeve 11 are preferably in groups and arrange.In one embodiment, the quantity of spray-hole 12 is six and is divided into two groups, and three spray-holes in every group are evenly arranged in the same plane perpendicular to fracturing sliding bush 10 central axiss, and namely the angle between the spray-hole on the same group is 120 °.Fig. 1 has schematically shown this layout, and wherein one group is arranged in outer sliding sleeve 11 than the position of upstream, and other one group is arranged in outer sliding sleeve 11 than the position in downstream.That the grouping of spray-hole 12 is not limited to two groups but also can be many groups with being appreciated that.
Spray-hole 12 is preferably and is configured to cylindrical hole, and in the hole with internal thread so that nozzle 20 be used for to be installed.The favourable part of the spray-hole 12 of this structure is, can select the nozzle 20 by the higher material making of hardness, to prolong the application life of fracturing sliding bush 10.And, after nozzle 20 is worn, only needs to change nozzle 20 and do not need to change whole fracturing sliding bush 10, thereby reduced cost.In one embodiment, the diameter of spray-hole 12 is chosen as 23mm.In another embodiment, nozzle 20 is configured to tubaeform, and its large end is towards the inside of fracturing sliding bush 10, and small end is outside fracturing sliding bush 10, to improve the flow velocity of institute's ejecting fluid.
According to fracturing sliding bush 10 of the present utility model, for being slidingly matched, namely after cutting off the shear pin 14 that is arranged between inner sliding sleeve 13 and the outer sliding sleeve 11, inner sliding sleeve 13 can slide towards the downstream along the inwall of outer sliding sleeve 11 between inner sliding sleeve 13 and the outer sliding sleeve 11.In one embodiment, be provided with step 21 at the downstream end place of outer sliding sleeve 11 inwalls, so that inner sliding sleeve 13 only can be in outer sliding sleeve 11 interior motions.In another embodiment, on the fitting face of inner sliding sleeve 13, also be furnished with at least sealing ring 15 at outer sliding sleeve 11.As shown in Figure 1, upstream portion and downstream part at outer sliding sleeve 11 and the fitting face of inner sliding sleeve 13 all are furnished with sealing ring 15, so that guarantee can leakage at the fitting face of outer sliding sleeve 11 and inner sliding sleeve 13, thereby thereby inner sliding sleeve 13 can move smooth opening spray-hole 12 towards downstream direction smoothly.
In use, when fracturing sliding bush 10 was in original state, inner sliding sleeve 13 was connected in outer sliding sleeve 11 by shear pin 14, and had blocked spray-hole 12.Behind the valve ball 16 that drops into the size coupling, valve ball 16 can produce in the pressure break oil pipe with ball seat 17 sealed engagement together and build the pressure.When building the pressure to the pressure of being scheduled in the oil pipe, shear pin 14 is cut off, and inner sliding sleeve 13 moves towards the downstream under pressure.When inner sliding sleeve 13 arrived outer sliding sleeve 11 lower end steps 21, inner sliding sleeve 13 stopped mobile, and the spray-hole on the outer sliding sleeve 11 12 all exposes, thereby can carry out pressing crack construction.
When sand card tubing string occured, the oil pipe inner chamber, can't be gone up pressure-raising and split oil pipe by the sand setting shutoff by valve ball 16 shutoff and annular space.At this moment need to salvage and clean-out service.Be lowered to the fishing tool that the salvaging structure with inner sliding sleeve 13 is complementary, take inner sliding sleeve and valve ball out of ground.The positive clean-out service of tie surface is cleaned out the sand setting that reaches above well section herein.If necessary, can take above-mentioned salvaging clean-out service to each section, until tubing string is tripped out.
Although with reference to preferred embodiment the utility model is described, in the situation that does not break away from scope of the present utility model, can carries out various improvement and can replace wherein parts with equivalent it.The utility model is not limited to disclosed specific embodiment in the literary composition, but comprises all technical schemes in the scope that falls into claim.
Claims (10)
1. ball-throwing type fracturing sliding bush that is used for Oil/gas Well comprises fixing outer sliding sleeve and is connected to inner sliding sleeve on the outer sliding sleeve inwall by shear pin, is provided with spray-hole at outer sliding sleeve,
It is characterized in that, be provided with the salvaging structure of taking out from fracturing sliding bush for inner sliding sleeve at the inwall of inner sliding sleeve.
2. fracturing sliding bush according to claim 1 is characterized in that, described salvaging structure is formed in the groove in the upstream region of inwall of described inner sliding sleeve.
3. fracturing sliding bush according to claim 2 is characterized in that, the upstream extremity of described groove consists of back-off.
4. fracturing sliding bush according to claim 2 is characterized in that, the downstream of described groove forms arc transition with the inwall of inner sliding sleeve and is connected.
5. fracturing sliding bush according to claim 1 is characterized in that, is provided with ball seat at the downstream area of the inwall of inner sliding sleeve.
6. fracturing sliding bush according to claim 5 is characterized in that, described ball seat is that small end is towards the taper ball seat in downstream.
7. according to claim 5 or 6 described fracturing sliding bushs, it is characterized in that described ball seat and inner sliding sleeve are into a single integrated structure.
8. fracturing sliding bush according to claim 1 is characterized in that, in described spray-hole nozzle is installed.
9. fracturing sliding bush according to claim 1 is characterized in that, also is furnished with at least sealing ring at described outer sliding sleeve on the fitting face of described inner sliding sleeve.
10. fracturing sliding bush according to claim 1 is characterized in that, is provided with step at the downstream end place of described outer sliding sleeve inwall, so that described inner sliding sleeve only can move in this outer sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298287 CN202645503U (en) | 2012-06-19 | 2012-06-19 | Bowling-type fracture sliding bush for oil and gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298287 CN202645503U (en) | 2012-06-19 | 2012-06-19 | Bowling-type fracture sliding bush for oil and gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202645503U true CN202645503U (en) | 2013-01-02 |
Family
ID=47414625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220298287 Expired - Lifetime CN202645503U (en) | 2012-06-19 | 2012-06-19 | Bowling-type fracture sliding bush for oil and gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202645503U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452523A (en) * | 2013-09-16 | 2013-12-18 | 北京探矿工程研究所 | Process method for packing complex stratum by elastic casing |
| CN103967469A (en) * | 2013-01-25 | 2014-08-06 | 中国石油化工股份有限公司 | Oil-gas well fracturing string |
| CN104895498A (en) * | 2014-03-04 | 2015-09-09 | 中国石油大学(北京) | Drilling and completion integration device and method using coiled tubing carrying sieve tubes for sidetracking |
| CN107143307A (en) * | 2017-07-20 | 2017-09-08 | 中国石油化工股份有限公司 | A kind of sliding sleeve fracturing device |
| CN107429556A (en) * | 2014-10-02 | 2017-12-01 | Sc资产有限公司 | For will expose in succession to allow the system along the pit shaft injecting fluid along the port of pit shaft |
| CN110145292A (en) * | 2019-05-18 | 2019-08-20 | 中国石油天然气股份有限公司 | Elastic lock sleeve sand blower |
-
2012
- 2012-06-19 CN CN 201220298287 patent/CN202645503U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967469A (en) * | 2013-01-25 | 2014-08-06 | 中国石油化工股份有限公司 | Oil-gas well fracturing string |
| CN103452523A (en) * | 2013-09-16 | 2013-12-18 | 北京探矿工程研究所 | Process method for packing complex stratum by elastic casing |
| CN104895498A (en) * | 2014-03-04 | 2015-09-09 | 中国石油大学(北京) | Drilling and completion integration device and method using coiled tubing carrying sieve tubes for sidetracking |
| CN104895498B (en) * | 2014-03-04 | 2017-03-29 | 中国石油大学(北京) | Coiled tubing band screen casing sidetracking is drilled well integrated apparatus and method |
| CN107429556A (en) * | 2014-10-02 | 2017-12-01 | Sc资产有限公司 | For will expose in succession to allow the system along the pit shaft injecting fluid along the port of pit shaft |
| CN107143307A (en) * | 2017-07-20 | 2017-09-08 | 中国石油化工股份有限公司 | A kind of sliding sleeve fracturing device |
| CN110145292A (en) * | 2019-05-18 | 2019-08-20 | 中国石油天然气股份有限公司 | Elastic lock sleeve sand blower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202645503U (en) | Bowling-type fracture sliding bush for oil and gas well | |
| CN201908639U (en) | Valving claw locking ball injection type sand blasting sliding sleeve for horizontal well fracturing | |
| CN204492719U (en) | A kind of ball-throwing type hydraulic pressure back-off is dual-purpose gives up | |
| CN102606110B (en) | Composite sliding sleeve, fracturing device and method for increasing well fracturing layer section | |
| CN105089608B (en) | Injection tool matched with underground eddy current tool for water drainage and gas production and application method | |
| CN104695923A (en) | Method for realizing staged multi-cluster fracturing of horizontal well by adopting soluble balls | |
| CN107100606A (en) | A kind of full-bore multistage subsection fracturing sliding bush | |
| CN208267805U (en) | Core plugging notifying mechanism of rope core drilling assembly | |
| CN104278979A (en) | Coiled tubing perforation bridge plug packing fracturing method | |
| CN103758130A (en) | Multi-medium ultrahigh pressure nozzle | |
| CN103821489A (en) | Horizontal well mechanical layering and hydraulic jet fracture acidizing compound technique pipe | |
| CN103821490A (en) | Special ejector with multilevel hydraulic ejecting and staged fracturing | |
| CN110043237A (en) | Plug-injection type sand blower of sliding sleeve and its control method | |
| CN107387038A (en) | A kind of water pumping gas production meet the eye on every side vortex instrument with underground | |
| CN110159187B (en) | High wind pressure down-the-hole hammer | |
| CN110552676B (en) | Sliding sleeve type multi-layer fracturing sand blower | |
| CN202745847U (en) | Controllable hydraulic ejector | |
| CN110043207B (en) | Underground adjustable self-advancing carbon dioxide jet drilling repairing device and method | |
| CN202659221U (en) | Horizontal well fracturing string | |
| CN204663463U (en) | Pitching segmented setting fracturing packer | |
| CN204492786U (en) | Hydraulic sand blasting perforation and fracturing tool | |
| CN115434665B (en) | Shaft switching tool free of well killing and underground operation and process method | |
| CN205532547U (en) | Sand blower | |
| CN111101883A (en) | Underground buffering seating device suitable for horizontal well plunger gas lift and working method thereof | |
| CN207111000U (en) | A kind of underground pressurizing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |