CN206753538U - Reverse circulation balance valve for hydraulic jet fracturing of continuous oil pipe - Google Patents
Reverse circulation balance valve for hydraulic jet fracturing of continuous oil pipe Download PDFInfo
- Publication number
- CN206753538U CN206753538U CN201720644844.9U CN201720644844U CN206753538U CN 206753538 U CN206753538 U CN 206753538U CN 201720644844 U CN201720644844 U CN 201720644844U CN 206753538 U CN206753538 U CN 206753538U
- Authority
- CN
- China
- Prior art keywords
- stop collar
- utility
- model
- top connection
- coiled tubing
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000011148 porous material Substances 0.000 claims description 4
- 239000013049 sediment Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Pipe Accessories (AREA)
Abstract
The utility model relates to an oil field oil extraction engineering technical field belongs to a coiled tubing hydraulic jetting is reverse circulation balanced valve for fracturing. The utility model provides an at coiled tubing hydraulic jet fracturing in-process, can't realize the problem of reverse circulation and balanced intraductal pressure, the utility model discloses by top connection (1), prevent changeing pin (2), stop collar (3), endotheca (4), sealing washer (5) and overcoat (6) and constitute, wherein top connection (1) is connected with stop collar (3) contact, top connection (1) is connected with endotheca (4) screw thread to by preventing changeing pin (2) fixed, stop collar (3) are connected with overcoat (6) screw thread, and fixed by preventing changeing pin (2), sealing washer (5) cover is in endotheca (4) bottom. The utility model has the advantages of improve packer life, shorten the engineering time, instrument simple structure, switch safe and reliable.
Description
Technical field
Oil extraction in oil field field of engineering technology is the utility model is related to, belongs to a kind of coiled tubing hydraulic jetting fracturing and is followed with counter
Ring balanced valve.
Background technology
Daqing oil field unconventional petroleum resources enriches, but complex geologic conditions, reservoir properties are poor, and conventional fracturing technique is present
The limitation that discharge capacity is small plus sand small scale, pressure break hop count are few.Using coiled tubing water-jet staged fracturing technology, can overcome
The drawbacks of conventional stage pressure break, realize effective transformation of poor thin layer.Because new Y211 packers are that machinery is set, construction knot
Shu Hou, current reacting cycle balanced valve easily causes packer still higher pressure difference up and down, makes Y211 packers be difficult to unseal, and
And without reacting cycle function, therefore a kind of novel trans cyclic balance valve need to be developed.
The content of the invention
The purpose of this utility model is designed in coiled tubing hydraulic jetting fracturing, is balanced by opening reacting cycle
Valve rapid equalisation pressure difference, reaches packer and quickly unseals, and is designed with reacting cycle passage, can realize reacting cycle when necessary
A kind of coiled tubing hydraulic jetting fracturing reacting cycle balanced valve of function.
It is of the present utility model to be realized by following technical measures：It is by top connection, anti-rotation pin, stop collar, interior
Set, sealing ring and overcoat composition, wherein top connection contact connection, top connection and inner sleeve screwed connection with stop collar, and by anti-rotation
Pin is fixed, stop collar and overcoat screwed connection, and is fixed by anti-rotation pin, and sealing ring is enclosed on inner sleeve bottom.
Inner sleeve is provided with intercommunicating pore.
Overcoat is provided with sediment outflow guiding gutter and inlet opening.
Compared with the prior art the utility model has the following advantages that：
The utility model mechanism structure advantages of simple, efficiently solve during coiled tubing hydraulic jetting fracturing due to
There is the problem of pressure difference is difficult to deblocking in Y211 packers, improve the reliability, security and efficiency of construction of construction up and down.Together
When, the utility model heatproof load performance is excellent, can fully meet horizontal well HTHP application environment.
Brief description of the drawings：
Fig. 1 is structural representation of the present utility model.
1- top connections, 2- anti-rotation pins, 3- stop collars, 4- inner sleeves, 5- sealing rings, 6- overcoats, 7- intercommunicating pores, 8- rows in figure
Sand guiding gutter, 9- inlet openings.
Embodiment：
The utility model is described in further detail below in conjunction with the accompanying drawings：It is by top connection 1, anti-rotation pin 2, stop collar 3, interior
Set 4, sealing ring 5 and outer 6 composition, wherein top connection 1 contact connection with stop collar 3, top connection 1 and the screwed connection of inner sleeve 4, and by
Stop pin 2 is fixed, stop collar 3 and the screwed connection of overcoat 6, and is fixed by anti-rotation pin 2, and sealing ring 5 is enclosed on the bottom of inner sleeve 4.
Inner sleeve 4 is provided with intercommunicating pore 7.
Overcoat 6 is provided with sediment outflow guiding gutter 8 and inlet opening 9.
During onsite application, the utility model top is connected with ball-and-seat, bottom connection Y211 packers.Tubing string is transferred, on
Joint 1 drives inner sleeve 4 to move down, and coordinates with overcoat 6, and isolation packer two-way pressure is realized by sealing ring 5.Work as upper lifting pipe
During post, top connection 1 drives inner sleeve 4 to move up, and sealing ring 5 leaves the sealing surface of overcoat 6, you can rapid equalisation Y211 packers
Upper and lower pressure difference, realize the quick deblocking of packer.
Claims (3)
- A kind of 1. coiled tubing hydraulic jetting fracturing reacting cycle balanced valve, it is characterised in that：It is by top connection (1), stop pin Follow closely (2), stop collar (3), inner sleeve (4), sealing ring (5) and overcoat（6）Composition, wherein top connection (1) connect with stop collar (3) Connection, top connection (1) and inner sleeve (4) screwed connection are touched, and by anti-rotation pin（2）It is fixed, stop collar（3）With overcoat (6) screw thread Connection, and by anti-rotation pin（2）It is fixed, sealing ring（5）It is enclosed on inner sleeve（4）Bottom.
- A kind of 2. coiled tubing hydraulic jetting fracturing reacting cycle balanced valve according to claim 1, it is characterised in that：It is interior Set (4) is provided with intercommunicating pore（7）.
- A kind of 3. coiled tubing hydraulic jetting fracturing reacting cycle balanced valve according to claim 1, it is characterised in that：Outside Set（6）It is provided with sediment outflow guiding gutter（8）And inlet opening（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720644844.9U CN206753538U (en) | 2017-06-06 | 2017-06-06 | Reverse circulation balance valve for hydraulic jet fracturing of continuous oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720644844.9U CN206753538U (en) | 2017-06-06 | 2017-06-06 | Reverse circulation balance valve for hydraulic jet fracturing of continuous oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206753538U true CN206753538U (en) | 2017-12-15 |
Family
ID=60621983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720644844.9U Active CN206753538U (en) | 2017-06-06 | 2017-06-06 | Reverse circulation balance valve for hydraulic jet fracturing of continuous oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206753538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863811A (en) * | 2019-12-04 | 2020-03-06 | 西华大学 | Multi-branch zone fracturing tool |
-
2017
- 2017-06-06 CN CN201720644844.9U patent/CN206753538U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863811A (en) * | 2019-12-04 | 2020-03-06 | 西华大学 | Multi-branch zone fracturing tool |
| CN110863811B (en) * | 2019-12-04 | 2021-07-23 | 西华大学 | Multi-branch zone fracturing tool |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |