CN208024336U - A kind of full-bore well cementation fracturing device - Google Patents
A kind of full-bore well cementation fracturing device Download PDFInfo
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- CN208024336U CN208024336U CN201721882704.1U CN201721882704U CN208024336U CN 208024336 U CN208024336 U CN 208024336U CN 201721882704 U CN201721882704 U CN 201721882704U CN 208024336 U CN208024336 U CN 208024336U
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- China
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- positioning sleeve
- well cementation
- ball seat
- shell
- sliding bush
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Abstract
The utility model is related to a kind of full-bore well cementation fracturing devices.Including preset well cementation fracturing sliding bush and opener.Preset well cementation fracturing sliding bush includes top connection, inner sliding sleeve, shell, lower contact and shear pin A, wherein the both ends of shell are coupled by screw thread with top connection, lower contact respectively, and several pressure break holes are arranged at the top of shell；Inner sliding sleeve is fixed inside the housing by shear pin A, and the upper end is contacted with top connection, and inner surface is equipped with annular groove.Opener includes ball seat, positioning sleeve, pressure break ball, rubber tube and shear pin B, wherein pressure break ball is set to inside ball seat；Positioning sleeve is coupled by shear pin B with ball seat；Rubber tube is set to outside positioning sleeve, and the upper end is contacted with ball seat, and lower end is contacted with positioning sleeve.Preset well cementation fracturing sliding bush matches in pairs with opener.After the completion of pressing crack construction, the utility model may make pit shaft latus rectum larger, is conducive to later stage production management, reduces fracturing work cost, improve operating efficiency.
Description
Technical field
The utility model is related to a kind of fracturing tools, the full-bore fracturing device for pressure break of especially cementing the well.
Background technology
With the extensive exploration and development of unconventional petroleum resources, horizontal well fracturing technology is widely applied.
Wherein, casing cementing staged fracturing technology due to individual well single hop transformation scale it is big, be widely used in low permeability reservoirs, thin layer oil
The storey increase design of the untraditional reservoirs such as Tibetan, shale gas and coal bed gas.Key tool of the well cementation fracturing sliding bush as the technology
One of, normally-open operation will directly influence being smoothed out for staged fracturing operation.Cement the well the common opening side of fracturing sliding bush
Formula has two kinds of mechanical opening type and pitching opening type.The opening tool that mechanical opening type well cementation fracturing sliding bush needs tripping in special is beaten
Sliding sleeve is opened, it is accurate to open, and can ensure casing full-bore, but it is long and right to open the tool rountrip occupancy construction time
Tool sealing requirements are higher after opening, increase difficulty of construction.And pitching opening type well cementation fracturing sliding bush is low by throwing
Density ball or dartlike weapon open sliding sleeve.After construction, for the sliding sleeve that ball seat can not drag for, hierarchy number is more, ball seat diameter
It is smaller, it cannot achieve the full-bore in tubing string.According to boring except the ball seat in operation removal pit shaft, then efficiency is low, operating cost
Height, and it is susceptible to bit freezing phenomenon.
Utility model content
Purpose of the utility model is to solve above-mentioned technical problem, a kind of raising job execution efficiency, cost are provided
Low full-bore well cementation fracturing device.
Its technical solution is：
A kind of full-bore well cementation fracturing device, including preset well cementation fracturing sliding bush and opener；Wherein：It is described preset solid
Well fracturing sliding bush includes top connection, inner sliding sleeve, shell, lower contact and shear pin A；Wherein, the both ends of shell respectively with top connection,
Lower contact is tightly connected, and several pressure break holes are arranged at the top of shell；Inner sliding sleeve is fixed inside the housing by shear pin A, the upper end with
Top connection is close or is in direct contact, and inner sliding sleeve hypomere inner surface is equipped with annular groove, and inner sliding sleeve slides axially close with shell composition
Envelope cooperation；The opener includes ball seat, positioning sleeve, pressure break ball, rubber tube and shear pin B, wherein pressure break ball is set to ball
In seat；Positioning sleeve is connect by shear pin B with ball seat, and positioning sleeve constitutes the sealing cooperation that slides axially, positioning sleeve with ball seat engaging portion
Lower part is equipped with the trapezoid boss of radial expansion, the annular groove composition limit cooperation of trapezoid boss and inner sliding sleeve；Rubber tube is arranged
Outside positioning sleeve, the upper end is contacted with ball seat, and lower end is contacted with positioning sleeve；The opener and preset well cementation fracturing sliding bush
Composition is axially inserted into cooperation；The ball seat, positioning sleeve and pressure break ball are made of the alloy material voluntarily dissolving；The rubber tube
It is made of the rubber material voluntarily dissolving.
Said program further comprises：
The trapezoid boss of positioning sleeve and be vertically connected with that section is evenly distributed-a through-hole is divided into-equal portions.
Match in be slidably matched face, positioning sleeve and the ball seat sliding of shell and top connection lower contact engaging portion, inner sliding sleeve and shell
Conjunction face is equipped with sealing ring.
The utility model has the beneficial effects that：1. after fracturing work is complete, ball seat, positioning sleeve, pressure break ball and rubber tube encounter
It when the production fluid of stratum, gradually dissolves over time, pit shaft latus rectum is larger；2. larger pit shaft latus rectum is conducive to production of hydrocarbons, profit
In underground work such as later stage well logging, well workover and storey increase design measures；3. opening sliding sleeve without lower inner tube or boring abrading-ball seat, reduce
Fracturing work cost, while improving operating efficiency.
Description of the drawings
Fig. 1 is that a kind of structure of the preset well cementation fracturing sliding bush of full-bore well cementation fracturing device described in the utility model is shown
It is intended to；
Fig. 2 is the sectional view at A-A in Fig. 1；
Fig. 3 is the sectional view at B-B in Fig. 1；
Fig. 4 is a kind of structural schematic diagram of the opener of full-bore well cementation fracturing device described in the utility model；
Fig. 5 is the sectional view at C-C in Fig. 4；
Fig. 6 is the sectional view at D-D in Fig. 4；
Fig. 7 is structural schematic diagram when opener is located in matched preset well cementation fracturing sliding bush；
The annular groove for the trapezoid boss and inner sliding sleeve that Fig. 8 show positioning sleeve constitutes structural representation when limit cooperation
Figure；
Fig. 9 is structural schematic diagram when preset well cementation fracturing sliding bush is opened；
Figure 10 is structural schematic diagram when preset well cementation fracturing sliding bush realizes full-bore；
In order to understand that structure in response diagram, attached drawing 1 have carried out transverse direction and widened processing, illustrated hereby.
In Fig. 1-10,1. top connections, 2.6.9.11.18.O type sealing rings, 3. inner sliding sleeves, 4. shells, 5. lower contacts, 7. cut
Follow closely A, 8. pressure break holes, 10. annular grooves, 12. pressure break balls, 13. ball seats, 14. shear pin B, 15. rubber tubes, 16. positioning sleeves, 17. ladders
Shape boss.
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of preset well cementation fracturing sliding bush, by top connection 1, inner sliding sleeve 3, shell 4, lower contact 5, is cut
It follows closely A7 and O-ring seal 2,6,9,11 forms.The upper end of shell 4 is coupled by screw thread with top connection 1, and is equipped with O-shaped sealing
Circle 2, lower end is coupled by screw thread with lower contact 5, and is equipped with O-ring seal 11；Inner sliding sleeve 3 is fixed on shell by shear pin A7
Inside 4, the upper end is contacted with top connection 1, and inner surface is equipped with annular groove 10；O-shaped sealing is equipped between inner sliding sleeve 3 and shell 4
Circle 6,9.
Fig. 2 show inner sliding sleeve 3 and is fixed on inside shell 4 by 6 shear pin A7.
6 pressure break holes 8 are arranged at the top that Fig. 3 show shell 4.
Fig. 4, Fig. 5 and Fig. 6 are the structural schematic diagram of opener, by ball seat 13, positioning sleeve 16, pressure break ball 12, rubber tube
15, shear pin B14 and O-ring seal 18 form.Ball seat 13, positioning sleeve 16 and pressure break ball 12 are by dissolvable alloy material system
At.Rubber tube 15 is made by can dissolve rubber material.Pressure break ball 12 is set to inside ball seat 13；Positioning sleeve 16 passes through 6 shear pins
B14 couples with ball seat 13, and is equipped with O-ring seal 18；Rubber tube 15 is set to outside positioning sleeve 16, and the upper end connects with ball seat 13
It touches, lower end is contacted with positioning sleeve 16.4 groups of through-holes that positioning sleeve 16 is evenly distributed are divided into 4 equal portions, and outer surface is equipped with edge
Circumferentially distributed trapezoid boss 17.
This full-bore well cementation fracturing device operation principle be：Preset well cementation fracturing sliding bush is lowered into pre-determined bit with casing
It sets, carries out well cementing operation；After the completion of well cementation, the opener mating with the preset well cementation fracturing sliding bush from well head input；Casing
It inside suppresses, under fluid power effect, opener is moved to shaft bottom direction, and the trapezoid boss 17 of positioning sleeve 16 is in radially at this time
Contraction state；When opener reaches matched preset well cementation fracturing sliding bush, the trapezoid boss 17 of positioning sleeve 16 can edge
Radial direction is sprung into the annular groove 10 of inner sliding sleeve 3, constitutes limit cooperation；Well head is suppressed to shear pin A7 and is cut, opener band
Dynamic inner sliding sleeve 3 moves downwardly together, until 3 lower end of inner sliding sleeve is contacted with lower contact 5, the preset well cementation fracturing sliding bush is beaten at this time
It opens；Well head, which continues to suppress to shear pin B14, to be cut, and pressure break ball 12 pushes ball seat 13 to move down certain distance, compressing rubber cylinder
15 so that the expansion of rubber tube 15 forms sealing；Continue to suppress, pressure break ball 12 is set, i.e., is formed between pressure break ball 12 and ball seat 13
Good sealing, can the corresponding stratum of the pressure break preset well cementation fracturing sliding bush；After the completion of fracturing work, oil/gas well starts to produce,
After ball seat 13, positioning sleeve 16, pressure break ball 12 and rubber tube 15 encounter stratum production fluid, can slowly it be dissolved in 10-20 days, finally
It is formed compared with big orifice in tubing string.
Fig. 7 show structural schematic diagram when opener is located inside matched preset well cementation sliding sleeve, fixed at this time
The trapezoid boss 17 of position set 16 is in radially contracted state.
The annular groove 10 for the trapezoid boss 17 and inner sliding sleeve 3 that Fig. 8 show positioning sleeve 16 constitutes knot when limit cooperation
Structure schematic diagram, the trapezoid boss 17 of positioning sleeve 16 is completely into the annular groove 10 of inner sliding sleeve 3 at this time.
Fig. 9 show structural schematic diagram when pressure break ball 12 is set, and shear pin A7 and shear pin B14 are cut, rubber tube 15
It is compressed, the pressure break hole 8 on shell 4 is exposed, and the trapezoid boss 17 of positioning sleeve 16 is located in the annular groove 10 of inner sliding sleeve 3, interior
3 lower end of sliding sleeve is contacted with lower contact 5, and good sealing is formed between pressure break ball 12 and ball seat 13.
Figure 10 show state when preset well cementation fracturing sliding bush realizes full-bore, ball seat 13, positioning sleeve 16, pressure break ball 12
And rubber tube 15 has been completely dissolved.
NWhen the preset well cementation fracturing sliding bush of grade is used in series, the order of connection by well head to shaft bottom is：TheNThe preset well cementation of grade
The preset well cementation fracturing sliding bush in fracturing sliding bush ... the second level, the preset well cementation fracturing sliding bush of the first order, pressure difference open sliding sleeve.Cunnings at different levels
It is linked together by casing and box cupling between set.From the first order toNThe preset well cementation fracturing sliding bush of grade, the annular of inner sliding sleeve 3
The length of groove 10 is successively decreased according to certain rules.With the first order toNThe preset well cementation mating opener of fracturing sliding bush of grade is determined
The length of the trapezoid boss 17 of position set 16 is also successively decreased according to identical rule.It often throws a set of opener and can only open and match therewith
Preset well cementation fracturing sliding bush.
NGrade it is preset well cementation fracturing sliding bush series connection when operation principle be：First, well head is suppressed to pressure difference opening sliding sleeve and is beaten
It opens, this sliding sleeve of pressure break corresponds to stratum；Then, from the well head input opener mating with the preset well cementation fracturing sliding bush of the first order；
Under fluid power effect, this opener passes sequentially through theNIt is preset solid to reach the first order to the preset well cementation fracturing sliding bush in the second level for grade
When well fracturing sliding bush, the trapezoid boss 17 of positioning sleeve 16 can be sprung into annular groove 10, form limit cooperation；And then open first
The preset well cementation fracturing sliding bush of grade, can the pressure break sliding sleeve correspond to stratum；Again from well head input and the preset well cementation fracturing sliding bush in the second level
Mating opener, under fluid power effect, this opener passes sequentially through theNGrade to the preset well cementation fracturing sliding bush of the third level,
When reaching the preset well cementation fracturing sliding bush in the second level, the trapezoid boss 17 of positioning sleeve 16 can be sprung into annular groove 10, formed and limited
Cooperation；To open the preset well cementation fracturing sliding bush in the second level, can the pressure break sliding sleeve correspond to stratum；And so on, finally input with
TheNThe mating opener of the preset well cementation fracturing sliding bush of grade opens theNThe preset well cementation fracturing sliding bush of grade, and this grade of sliding sleeve of pressure break
Corresponding stratum.After the completion of fracturing work, ball seat 13, positioning sleeve 16, pressure break ball 12 and the rubber tube 15 of all openers are met
It to after the production fluid of stratum, can slowly be dissolved in 10-20 days, form larger full-bore in tubing string.
Claims (4)
- The fracturing device 1. a kind of full-bore is cemented the well, including preset well cementation fracturing sliding bush and opener；It is characterized in that：It is described preset Fracturing sliding bush of cementing the well includes top connection（1）, inner sliding sleeve（3）, shell（4）, lower contact（5）And shear pin A（7）；Wherein, shell （4）Both ends respectively with top connection（1）, lower contact（5）It is tightly connected, shell（4）Top have several pressure break holes（8）；Interior cunning Set（3）Pass through shear pin A（7）It is fixed on shell（4）Inside, the upper end and top connection（1）It approaches or is in direct contact, inner sliding sleeve（3） Hypomere inner surface is equipped with annular groove（10）, inner sliding sleeve（3）With shell（4）Composition, which slides axially, seals cooperation；The unlatching work Tool includes ball seat（13）, positioning sleeve（16）, pressure break ball（12）, rubber tube（15）And shear pin B（14）, wherein pressure break ball（12） It is set to ball seat（13）It is interior；Positioning sleeve（16）Pass through shear pin B（14）With ball seat（13）Connection, positioning sleeve（16）With ball seat（13）Knot Conjunction portion constitutes the sealing cooperation that slides axially, positioning sleeve（16）Lower part is equipped with the trapezoid boss of radial expansion（17）, trapezoid boss （17）With inner sliding sleeve（3）Annular groove（10）Constitute limit cooperation；Rubber tube（15）It is set to positioning sleeve（16）Outside, thereon End and ball seat（13）Contact, lower end and positioning sleeve（16）Contact；The opener constitutes axial with preset well cementation fracturing sliding bush It is inserted into cooperation；The ball seat（13）, positioning sleeve（16）And pressure break ball（12）It is made of the alloy material voluntarily dissolving；The rubber Packing element（15）It is made of the rubber material voluntarily dissolving.
- The fracturing device 2. full-bore according to claim 1 is cemented the well, it is characterized in that：Positioning sleeve（16）Trapezoid boss（17） And it is vertically connected with the 3-6 through-hole that section is evenly distributed and is divided into 3-6 equal portions.
- The fracturing device 3. a kind of full-bore according to claim 2 is cemented the well, it is characterized in that：In shell（4）With top connection （1）Lower contact（5）Engaging portion, inner sliding sleeve（3）With shell（4）Be slidably matched face, positioning sleeve（16）With ball seat（13）It is slidably matched Face is equipped with sealing ring.
- The fracturing device 4. full-bore according to claims 1 or 2,3 is cemented the well, it is characterized in that：Preset well cementation fracturing sliding bush is The preset well cementation fracturing sliding bush of plural serial stage structure, i.e. level-one and two level are extremelyNThe preset well cementation fracturing sliding bush of grade is sequentially connected in series, InNFor positive integer, the preset well cementation fracturing sliding bush of the first order toNThe inner sliding sleeve of the preset well cementation fracturing sliding bush of grade（3）Upper annular is recessed Slot（10）Gradually successively decrease from large to small, the positioning sleeve of corresponding level-one to N grades of openers（16）Upper trapezoid boss（17）By greatly extremely It is small gradually to successively decrease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721882704.1U CN208024336U (en) | 2017-12-28 | 2017-12-28 | A kind of full-bore well cementation fracturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721882704.1U CN208024336U (en) | 2017-12-28 | 2017-12-28 | A kind of full-bore well cementation fracturing device |
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| Publication Number | Publication Date |
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| CN208024336U true CN208024336U (en) | 2018-10-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973066A (en) * | 2017-12-28 | 2019-07-05 | 中石化石油工程技术服务有限公司 | A kind of full-bore well cementation fracturing device |
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2017
- 2017-12-28 CN CN201721882704.1U patent/CN208024336U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973066A (en) * | 2017-12-28 | 2019-07-05 | 中石化石油工程技术服务有限公司 | A kind of full-bore well cementation fracturing device |
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