CN206016791U - A kind of horizontal well volume fracturing is with spiral double-deck diversion oil pipe - Google Patents
A kind of horizontal well volume fracturing is with spiral double-deck diversion oil pipe Download PDFInfo
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- CN206016791U CN206016791U CN201620983795.7U CN201620983795U CN206016791U CN 206016791 U CN206016791 U CN 206016791U CN 201620983795 U CN201620983795 U CN 201620983795U CN 206016791 U CN206016791 U CN 206016791U
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Abstract
This utility model provides a kind of horizontal well volume fracturing spiral double-deck diversion oil pipe, a kind of horizontal well volume fracturing is with spiral double-deck diversion oil pipe, including outer tube and inner tube, said inner tube is socketed in outer tube, a cavity is formed between said inner tube and outer tube, inner tube two ends are connected with outer tube by upper box cupling and lower box cupling respectively；The outer surface of said inner tube is provided with bifilar helix runner.This utility model by improving the sand concentration of upper spray gun, flow and pressure in multistage pair of cluster perforating and fracturing tubing string of horizontal well volume fracturing using bimetallic tube+inner tube external spiral structure, reduce the probability and flow of the excessive sand aggregation of lower spray gun, the inhomogeneities of upstream and downstream spray gun perforation in current horizontal well horizontal segment sand deposition, sand liquid separation problem and multistage pair of cluster perforating and fracturing tubing string are efficiently solved, the multistage pair clusters that drag of horizontal well is improve and is sprayed pressing crack construction success rates.
Description
Technical field
This utility model is related to a kind of horizontal well volume fracturing with spiral double-deck diversion oil pipe, is primarily adapted for use in horizontal well
In multistage pair of cluster injection pressing crack construction tubing string of volume fracturing.
Background technology
Horizontal well volume fracturing technology is the main flow transform pattern produced in current Changqing oilfields increasing the storage, due to high pump pressure, greatly
Under discharge capacity, big liquid measure, large sand amount flow of fluid, easily there is sand deposition, sand liquid segregation phenomenon in horizontal segment in load fluid, in addition
The effect of inertia of sand liquid movement, big liquid measure can bring sand into lower spray gun along horizontal segment tubing string as far as possible, on reducing
The sand concentration of gun nozzle, flow and pressure, cause the failure of spray gun abrasive perforating or lower spray gun shifts to an earlier date erosion failure, no
Beneficial to multistage pair of shower hole, volume fracturing construction effect has been had a strong impact on.For this purpose, devising a kind of horizontal well volume fracturing spiral shell
Rotating double-deck diversion oil pipe.
Utility model content
This utility model is by improving multistage pair of cluster of horizontal well volume fracturing using " bimetallic tube+inner tube external spiral structure "
The sand concentration of upper spray gun, flow and pressure in perforating and fracturing tubing string, stop the sand of spray gun in entrance, flow as far as possible
Overlong time some, it is ensured that most of load fluids enter upper spray gun, reduce the probability and liquid of the excessive sand aggregation of lower spray gun
Flow, so that multistage pair of cluster perforating and fracturing upstream and downstream spray gun abrasive perforating effects equalizer of horizontal well volume fracturing, solves at present
In horizontal well horizontal segment sand deposition, sand liquid separation problem and multistage pair of cluster perforating and fracturing tubing string, upstream and downstream spray gun perforation is not
Uniformity.A kind of horizontal well volume fracturing that this utility model is provided makes big liquid measure, high flow rate with spiral double-deck diversion oil pipe
Load fluid enters upper spray gun inner chamber, multistage pair of cluster perforating and fracturing efficiency of construction of well of improving the standard and peace with the state of eddy flow and shunting
Quan Xing.
The technical solution adopted in the utility model is：
With spiral double-deck diversion oil pipe, including outer tube and inner tube, said inner tube is socketed on a kind of horizontal well volume fracturing
In outer tube, a cavity between said inner tube and outer tube, is formed, inner tube two ends are connected with outer tube by upper box cupling and lower box cupling respectively
Connect；The outer surface of said inner tube is provided with bifilar helix runner.
The bifilar helix flow channel shape that the outer surface of said inner tube is provided with is spiral dovetail groove.
The trapezoidal groove deep 4.5mm of the spiral, groove bottom width 12mm, 60 ° of trapezoidal angle.
Said inner tube steel adopt 35CrMo materials, and the outer surface of said inner tube has the nitriding layer, nitrided case depth to be
0.6mm, hardness are 70 ~ 92HRC.
The outer tube steel adopt P110 materials, and its hardness is 650 ~ 835HB.
Described upper box cupling is identical with lower box cupling structure, and its button-type is 3-1/2 " UP TBG.
The beneficial effects of the utility model are：
A kind of spiral double-deck diversion oil pipe of horizontal well volume fracturing that this utility model is provided, " double by employing
Layer pipe+inner tube external spiral structure " is dense come the sand for improving upper spray gun in multistage pair of cluster perforating and fracturing tubing string of horizontal well volume fracturing
Degree, flow and pressure, as make the sand of spray gun in entrance, flow quantity residence time excessively longer as possible, it is ensured that great majority
Load fluid enters upper spray gun, reduces the probability and flow quantity of the excessive sand aggregation of lower spray gun, it is achieved that horizontal well volume fracturing
Multistage pair of cluster perforating and fracturing upstream and downstream spray gun abrasive perforating effects equalizer, has reached horizontal segment shaft bottom sand liquid mixture and many again
The double cluster perforating and fracturing upstream and downstream spray guns of level are while the purpose of perforation, practical, effect is significant.
It is further detailed below with reference to accompanying drawing.
Description of the drawings
Fig. 1 is a kind of spiral double-deck diversion oil pipe schematic diagram of horizontal well volume fracturing.
Fig. 2 is A-A structural representations.
In figure：The upper box cuplings of 1-；2- outer tubes；3- inner tubes；Box cupling under 4-.
Specific embodiment
Embodiment 1：
This utility model is by improving multistage pair of cluster of horizontal well volume fracturing using " bimetallic tube+inner tube external spiral structure "
The sand concentration of upper spray gun, flow and pressure in perforating and fracturing tubing string, stop the sand of spray gun in entrance, flow as far as possible
Overlong time some, it is ensured that most of load fluids enter upper spray gun, reduce the probability and liquid of the excessive sand aggregation of lower spray gun
Flow, so that multistage pair of cluster perforating and fracturing upstream and downstream spray gun abrasive perforating effects equalizer of horizontal well volume fracturing, solves at present
In horizontal well horizontal segment sand deposition, sand liquid separation problem and multistage pair of cluster perforating and fracturing tubing string, upstream and downstream spray gun perforation is not
Uniformity.A kind of horizontal well volume fracturing as illustrated in fig. 1 and 2 that this utility model is provided with spiral double-deck diversion oil pipe,
Big liquid measure, high flow rate load fluid is made to enter upper spray gun inner chamber, multistage pair of shower hole of well of improving the standard with the state of eddy flow and shunting
Pressing crack construction efficiency and safety.
With spiral double-deck diversion oil pipe, including outer tube 2 and inner tube 3, said inner tube 3 is socketed a kind of horizontal well volume fracturing
In outer tube 2, between said inner tube 3 and outer tube 2, a cavity is formed, 3 two ends of inner tube are respectively by upper box cupling 1 and lower box cupling 4
It is connected with outer tube 2；The outer surface of said inner tube 3 is provided with bifilar helix runner.
Application mode of the present utility model is：
1., before profit horizontal well carries out the double clusters injection pressing crack constructions of the multistage dragging of volume fracturing first, tied according to operating tool string
Composition, the upstream that spiral double-deck diversion oil piping is sprayed spray gun on fracturing string in double clusters, a lot of levels of assembly and connection are dragged
Dynamic double cluster injection fracturing strings.
2. the above-mentioned multistage pair clusters injection fracturing strings that drag are lowered into the predetermined specking position of upstream and downstream spray gun.
3. the above-mentioned multistage pair clusters injection fracturing strings that drag enter well, and pitching is after hydraulic setting packer grappling in place, sharp
With pressure break pump truck with 0.8～1.0 m of discharge capacity3/ min clear water circulation well cleanups, it is ensured that liquid outlet liquid machine is miscellaneous in surface mud pond
Matter content is less than 0.22%, and wellbore clean is clean.
4. then pressure break pump truck output is improved to 1.0 ~ 2.0m3/ min, is 145 ~ 160kg/m by sand concentration3Load fluid edge
The multistage pair clusters injection fracturing strings that drag are pumped into, when big liquid measure, high flow rate load fluid flow through the spiral double-deck diversion oil of horizontal segment
Guan Shi, load fluid are split into two parts, and a part is flow through from the interior latus rectum of inner tube 3, and another part is from inner tube 3 and the ring of outer tube 2
Shape space is flow through, as the outer surface of inner tube 3 is designed with Double helix trapezoid groove structure, so that this part of load fluid is produced
Spiral flow state, forms spiral fluidised form in annular space, it is contemplated that eddy flow and shunting action delay big liquid measure, high flow rate
Load fluid flows through the time of spray gun, and then the very short distance region between the oil pipe lower exit and upper spray gun, load fluid
Collect residence time largely to extend, ensure that the load fluid for entering upper spray gun increases, lower spray gun still has foot
Enough load fluids, so as to reached multistage drag double clusters injection pressure break upstream and downstream spray guns purpose of perforation simultaneously, formed pit shaft and
The dijection hole path of combination of zones.
5., after penetrating perforate road, pump truck is with discharge capacity 2.0m3/ min injects displacement fluid, drags double cluster injection pressure break pipes by multistage
In post, load fluid is replaced into stratum, then rinses fracturing string.
6. rinse after finishing, casing annulus improves discharge capacity to 3.6 ~ 4.0m3/ min proceeds by annular fracturing, meanwhile, pressure
Split in tubing string with discharge capacity 1.0m3/ min is required after pressure break, then with discharge capacity 4.0m according to detail design with note balance pressure3/ min is noted
Enter displacement fluid, fracturing fluid in double for multistage dragging clusters injection fracturing strings is all replaced into stratum, to complete reservoir fracturing improvement.
7., after the completion for the treatment of the double clusters injection pressing crack constructions of the multistage dragging of profit horizontal well, upper proposition injection fracturing string is torn open in time
Unload, check spiral double-deck diversion oil pipe（Contain outer tube wall, inner tube inside and outside wall）Service condition, spiral for maintaining or changing
Double-deck diversion oil pipe, subsequently to carry out multistage pair of cluster injection pressing crack construction again.
This utility model is related to horizontal well volume fracturing Technology field, is to realize horizontal well volume fracturing shaft bottom sand
The liquid important tool that mixture, big liquid measure are shunted again, changes the stream for entering spray gun on the double cluster perforating and fracturings of horizontal well horizontal segment
Amount, sand concentration, pressure so that enter the sand concentration of upper spray gun, flow as far as possible big a bit, it is ensured that its normal perforation and after
Continuous pressure break, meanwhile, the probability and flow quantity of the excessive sand aggregation of lower spray gun is reduced, horizontal well volume fracturing is suitably applied
In multistage pair of cluster injection fracturing string.
Embodiment 2：
Based on the basis of embodiment 1, in the present embodiment, the bifilar helix runner shape that the outer surface of said inner tube 3 is provided with
Shape is spiral dovetail groove.
The trapezoidal groove deep 4.5mm of the spiral, groove bottom width 12mm, 60 ° of trapezoidal angle
The tubing length 9200mm that this utility model is provided, 2 external diameter 88.9mm of outer tube, internal diameter 76mm, 3 external diameter of inner tube
59mm, internal diameter 38mm, 3 bifilar helix of inner tube along clockwise direction, 45 ° of helical angle, Double helix pitch 135mm, bipitch spacing
32mm, spiral dovetail groove 135mm, groove depth 4.5mm, groove bottom width 12mm, 60 ° of trapezoidal angle.
3 steel of said inner tube adopt 35CrMo materials, and the outer surface of said inner tube 3, said inner tube 3 are provided with bifilar helix stream
The outer surface in road is processed by nitridation process, its nitrided case depth 0.6mm so that its hardness reaches 70 ~ 92HRC.
2 steel of the outer tube adopt P110 materials, and its hardness is 650 ~ 835HB.
Described upper box cupling 1 is identical with lower 4 structure of box cupling, and its button-type is 3-1/2 " UP TBG.Such as Fig. 1, this utility model
A kind of horizontal well volume fracturing being related to adopts P110 materials with 2 steel of outer tube of spiral double-deck diversion oil pipe, thermally treated
Hardness is up to 650 ~ 835HB；3 steel of inner tube adopt 35CrMo materials, and thermally treated hardness is up to 197 ~ 235HB, the outer surface of inner tube 3
Double helix trapezoid groove structure, and the outer surface using nitridation process process inner tube 3 is provided with, nitrided case depth 0.6mm, its hardness are high
Up to 70 ~ 92HRC, wearability is high, to avoid the part load fluid after shunting from causing 3 outer surface of inner tube double due to the change for flowing to
The local scour of spiral dovetail groove.
The trapezoidal groove processing of the Double helix of the inner tube 3 of the oil pipe is not allow for the defects such as crackle, pore, the gentle light of spiral transition
Sliding.
Connected mode of the present utility model connects for tubing coupling, in order to dismantling and changing.
Application mode of the present utility model is：
1., before profit horizontal well carries out the double clusters injection pressing crack constructions of the multistage dragging of volume fracturing first, tied according to operating tool string
Composition, the upstream that spiral double-deck diversion oil piping is sprayed spray gun on fracturing string in double clusters, a lot of levels of assembly and connection are dragged
Dynamic double cluster injection fracturing strings.
2. the above-mentioned multistage pair clusters injection fracturing strings that drag are lowered into the predetermined specking position of upstream and downstream spray gun.
3. the above-mentioned multistage pair clusters injection fracturing strings that drag enter well, and pitching is after hydraulic setting packer grappling in place, sharp
With 700 type pressure break pump trucks with 0.8～1.0 m of discharge capacity3/ min clear water circulation well cleanups, it is ensured that liquid outlet liquid machine in surface mud pond
Tool impurity content is less than 0.22%, and wellbore clean is clean.
4. then 700 type pressure break pump truck outputs to 1.0 ~ 2.0m are improved3/ min, is 145 ~ 160kg/m by sand concentration3Take sand
Liquid is pumped into along the multistage pair clusters injection fracturing strings that drag, when big liquid measure, high flow rate load fluid flow through the spiral bilayer point of horizontal segment
During stream oil pipe, load fluid is split into two parts, and a part is flow through from the interior latus rectum of inner tube 3, and another part is from inner tube 3 and outer tube 2
Annular space flow through, as the outer surface of inner tube 3 is designed with Double helix trapezoid groove structure, so that this part of load fluid
Spiral flow state is produced, and spiral fluidised form is formed in annular space, it is contemplated that eddy flow and shunting action delay big liquid measure, height
Flow velocity load fluid flows through the time of spray gun, and then the very short distance region between the oil pipe lower exit and upper spray gun, takes
Sand liquid collects residence time and largely extends, and ensures that the load fluid for entering upper spray gun increases, and lower spray gun is still
There are enough load fluids, pressure break upstream and downstream spray guns are sprayed while the purpose of perforation, forms well so as to reach the multistage pair clusters that drag
Cylinder and the dijection hole path of combination of zones.
5., after penetrating perforate road, pump truck is with discharge capacity 2.0m3/ min injects displacement fluid, drags double cluster injection pressure break pipes by multistage
In post, load fluid is replaced into stratum, then rinses fracturing string.
6. rinse after finishing, casing annulus improves discharge capacity to 3.6 ~ 4.0m3/ min proceeds by annular fracturing, meanwhile, pressure
Split in tubing string with discharge capacity 1.0m3/ min is required after pressure break, then with discharge capacity 4.0m according to detail design with note balance pressure3/ min is noted
Enter displacement fluid, fracturing fluid in double for multistage dragging clusters injection fracturing strings is all replaced into stratum, to complete reservoir fracturing improvement.
7., after the completion for the treatment of the double clusters injection pressing crack constructions of the multistage dragging of profit horizontal well, upper proposition injection fracturing string is torn open in time
Unload, check spiral double-deck diversion oil pipe（Contain outer tube wall, inner tube inside and outside wall）Service condition, spiral for maintaining or changing
Double-deck diversion oil pipe, subsequently to carry out multistage pair of cluster injection pressing crack construction again.
Claims (6)
1. a kind of horizontal well volume fracturing is with spiral double-deck diversion oil pipe, it is characterised in that：Including outer tube（2）And inner tube（3）,
Said inner tube（3）With outer tube（2）Between formed a cavity, said inner tube（3）It is socketed on outer tube（2）Interior, inner tube（3）Two ends point
Not by upper box cupling（1）With lower box cupling（4）With outer tube（2）Connection；Said inner tube（3）Outer surface be provided with bifilar helix runner.
2. according to claim 1 a kind of horizontal well volume fracturing with spiral double-deck diversion oil pipe, it is characterised in that：Described
Inner tube（3）The bifilar helix flow channel shape that is provided with of outer surface be spiral dovetail groove.
3. according to claim 2 a kind of horizontal well volume fracturing with spiral double-deck diversion oil pipe, it is characterised in that：Described
The trapezoidal groove deep 4.5mm of spiral, groove bottom width 12mm, 60 ° of trapezoidal angle.
4. according to claim 1 a kind of horizontal well volume fracturing with spiral double-deck diversion oil pipe, it is characterised in that：Described
Inner tube（3）Steel adopt 35CrMo materials, said inner tube（3）Outer surface have nitriding layer, its nitrided case depth 0.6mm, hardness
It is 70 ~ 92HRC.
5. according to claim 1 a kind of horizontal well volume fracturing with spiral double-deck diversion oil pipe, it is characterised in that：Described
Outer tube（2）Steel adopt P110 materials, and its hardness is 650 ~ 835HB.
6. according to claim 1 a kind of horizontal well volume fracturing with spiral double-deck diversion oil pipe, it is characterised in that：Described
Upper box cupling（1）With lower box cupling（4）Structure is identical, and its button-type is 3-1/2 " UP TBG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620983795.7U CN206016791U (en) | 2016-08-30 | 2016-08-30 | A kind of horizontal well volume fracturing is with spiral double-deck diversion oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620983795.7U CN206016791U (en) | 2016-08-30 | 2016-08-30 | A kind of horizontal well volume fracturing is with spiral double-deck diversion oil pipe |
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| Publication Number | Publication Date |
|---|---|
| CN206016791U true CN206016791U (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620983795.7U Active CN206016791U (en) | 2016-08-30 | 2016-08-30 | A kind of horizontal well volume fracturing is with spiral double-deck diversion oil pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018040138A1 (en) * | 2016-08-30 | 2018-03-08 | 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 | Spiral-type flow separation dual-wall oil tube for volume fracturing of horizontal well |
-
2016
- 2016-08-30 CN CN201620983795.7U patent/CN206016791U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018040138A1 (en) * | 2016-08-30 | 2018-03-08 | 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 | Spiral-type flow separation dual-wall oil tube for volume fracturing of horizontal well |
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| GR01 | Patent grant |