CN203808964U - Horizontal well multilevel ejection fracturing tool - Google Patents
Horizontal well multilevel ejection fracturing tool Download PDFInfo
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- CN203808964U CN203808964U CN201420151156.5U CN201420151156U CN203808964U CN 203808964 U CN203808964 U CN 203808964U CN 201420151156 U CN201420151156 U CN 201420151156U CN 203808964 U CN203808964 U CN 203808964U
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- fracturing
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- horizontal well
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Abstract
A horizontal well multilevel ejection fracturing tool is characterized in that a fracturing operation tubular column is arranged in a sleeve; the horizontal section at the lower end of the fracturing operation tubular column is connected with 2-10 levels of fracturing sand blowers by an oil pipe; a packer is connected between each level of fracturing sand blower and the adjacent level of fracturing sand blower by an oil pipe; each level of fracturing tool is formed by connecting 2 or 3 spraying gun slide sleeves; the tail end of the final level of fracturing sand blower is provided with a hydraulic anchor, a single flow valve, a sieve pipe and a guide shoe in sequence. Each packer is a K341 packer. The horizontal well multilevel ejection fracturing tool has the advantages of simple structure, high fracturing efficiency and the like and can be popularized and used in an oil field.
Description
Technical field
The utility model belongs to producing oil, gas, water from well; The method of solubility or solubilization material or slurry of mineral or equipment technical field, be specifically related to horizontal well multi-stage jet fracturing tool.
Background technology
The staged fracturing of oil exploitation horizontal well is processed, and is generally mechanical type staged fracturing, and this pressure break mode contributes for improving the injection rate of reservoir permeability and increase exploitation well yield and Injection Well, but it also exists following shortcoming or deficiency simultaneously:
By the mandatory section construction of drag fracturing packer, pressure break completes after an interval, and upper lifting pipe post carries out the pressing crack construction of next interval, causes so first the complete rear packer of pressure break to be difficult to deblocking; Due to upper lifting pipe post packer sustain damage, poorly sealed, cause pressure break to lose efficacy; The complete rear strata pressure of pressure break is higher, easily causes blowout during upper lifting pipe post, leads to a disaster; The method operability is poor, and technique is loaded down with trivial details, carries tubing string at every turn and needs dismounting well head and pressure break pipeline, and program is complicated, and labor intensity of operating staff is large, poor stability.
The exploitation of Oil/gas Well, the mode of domestic most employing casing cementing completion is carried out perforation under well cementation environment at present, adopts pitching sliding sleeve staged fracturing technology exploitation in sleeve pipe after perforation.In sleeve pipe, pitching sliding sleeve staged fracturing technology has become the Main Yield-increasing measure of Oil/gas Well, and general individual well oil and gas production can increase by 3～5 times.But spraying fracturing tool, conventional horizontal well can only spray pressure break by a spray gun, owing to being subject to the restriction of pitching size, at horizontal well, implement to spray in fracturing process, can only apply at most 10 little oil reservoirs of 10 spray gun transformations, oil-gas Layer transformation area is little, and recovery ratio is low; And in implementation process, due to oil jacket annular space, UNICOM cannot cut off, pressure break specific aim is not strong, affects oil and gas production and effect yet.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the shortcoming of above-mentioned hydraulic jetting fracturing instrument, and a kind of reasonable in design, simple in structure, horizontal well multi-stage jet fracturing tool that the rate of oil and gas recovery is high is provided.
Addressing the above problem adopted technical scheme is:
In sleeve pipe, be provided with fracturing work tubing string, fracturing work tubing string lower end horizontal segment connects with 2～10 grades of frac-sand jets with oil pipe, between one-level frac-sand jet and adjacent one-level frac-sand jet, with oil pipe, be connected with packer, every grade of fracturing tool is connected and is formed by 2 or 3 spray gun sliding sleeves, and the end of afterbody frac-sand jet is disposed with hydraulic anchor, ball-and-seat, screen casing, guide shoe.
Packer of the present utility model is K341 packer.
The utility model adopts 2 or 3 spray guns containing sliding sleeve to be connected in series in each section of fracturing tool, make a pitching can open 2 or 3 containing the spray gun of sliding sleeve, once realize many bunches of staged fracturings of multistage, once can transform 10～30 little oil-gas Layer, and have simple in structure, with strong points, efficiency of construction is high, pressure break efficiency is high, reduce the consumption of fracturing liquid, cost-saving, the advantages such as safety and environmental protection, can increase substantially the rate of oil and gas recovery, can on oil field, promote the use of.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the utility model.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further described, but the utility model is not limited to these embodiment.
Embodiment 1
In Fig. 1, the horizontal well multi-stage jet fracturing tool of the present embodiment is connected and is formed by fracturing work tubing string 1, sleeve pipe 2, frac-sand jet, packer 5, hydraulic anchor 6, ball-and-seat 7, screen casing 8, guide shoe 9.
The horizontal well multi-stage jet fracturing tool of the present embodiment is connected and is formed by 3 grades of frac-sand jets, in the vertical section of the interior left end of sleeve pipe 2, fracturing work tubing string 1 is installed, there is the first order frac-sand jet lower end of fracturing work tubing string 1 by thread connection, first order frac-sand jet consists of screw thread coupled in series 3 spray gun sliding sleeves 3, between spray gun sliding sleeve 3, with oil pipe 4, connect, spray gun sliding sleeve 3 right-hand members are fixedly connected with packer 5 by screw thread.The packer 5 of the present embodiment adopts K341 packer, packer 5 right-hand members are connected with the spray gun sliding sleeve 3 of second level frac-sand jet left end by screw thread, second level frac-sand jet consists of screw thread coupled in series 2 spray gun sliding sleeves 3, spray gun sliding sleeve 3 right-hand members on right side are fixedly connected with packer 5 by screw thread, packer 5 right-hand members are connected with the spray gun sliding sleeve 3 of third level frac-sand jet left end by screw thread, third level frac-sand jet consists of screw thread coupled in series 2 spray gun sliding sleeves 3, spray gun sliding sleeve 3 right-hand members on third level frac-sand jet right side are fixedly connected with the left end of hydraulic anchor 6 by screw thread, hydraulic anchor 6 right-hand members are fixedly connected with the left end of ball-and-seat 7 by screw thread, ball-and-seat 7 right-hand members are fixedly connected with the left end of screen casing 8 by screw thread, screen casing 8 right-hand members are fixedly connected with guide shoe 9 by screw thread.Because adopting spray gun sliding sleeve 3, oil pipe 4 to connect, the utility model forms frac-sand jet, the position of frac-sand jet is all corresponding in oil-gas Layer, by the surface water, compressing into row sprays, hydraulic piercing in wellbore casing, stratum and pit shaft form effective passage, then sand fracturing, stratum forms many cracks successively, increases substantially the rate of oil and gas recovery.
Embodiment 2
The horizontal well multi-stage jet fracturing tool of the present embodiment is connected and is formed by 2 grades of frac-sand jets, there is the first order frac-sand jet lower end of fracturing work tubing string 1 by thread connection, first order frac-sand jet consists of screw thread coupled in series 3 spray gun sliding sleeves 3, between spray gun sliding sleeve 3, with oil pipe 4, connect, spray gun sliding sleeve 3 right-hand members are fixedly connected with packer 5 by screw thread.The packer 5 of the present embodiment adopts K341 packer, packer 5 right-hand members are connected with the spray gun sliding sleeve 3 of second level frac-sand jet left end by screw thread, second level frac-sand jet consists of screw thread coupled in series 3 spray gun sliding sleeves 3, and spray gun sliding sleeve 3 right-hand members on frac-sand jet right side, the second level are fixedly connected with the left end of hydraulic anchor 6 by screw thread.
Connecting relation between other component and component is identical with embodiment 1.Operating principle is identical with embodiment 1.
Embodiment 3
The horizontal well multi-stage jet fracturing tool of the present embodiment is connected and is formed by 10 grades of frac-sand jets, there is the first order frac-sand jet lower end of fracturing work tubing string 1 by thread connection, first order frac-sand jet consists of screw thread coupled in series 2 spray gun sliding sleeves 3, between spray gun sliding sleeve 3, with oil pipe 4, connect, spray gun sliding sleeve 3 right-hand members are fixedly connected with packer 5 by screw thread.The packer 5 of the present embodiment adopts K341 packer, packer 5 right-hand members are connected with the spray gun sliding sleeve 3 of second level frac-sand jet left end by screw thread ... the tenth grade of frac-sand jet consists of screw thread coupled in series 2 spray gun sliding sleeves 3, and spray gun sliding sleeve 3 right-hand members on the tenth grade of frac-sand jet right side are by being fixedly connected with the left end of hydraulic anchor 6.
Connecting relation between other component and component is identical with embodiment 1.Operating principle is identical with embodiment 1.
Claims (2)
1. a horizontal well multi-stage jet fracturing tool, in sleeve pipe (2), be provided with fracturing work tubing string (1), fracturing work tubing string (1) lower end for horizontal segment oil pipe (4) connect with 2～10 grades of frac-sand jets, between one-level frac-sand jet and adjacent one-level frac-sand jet, with oil pipe (4), be connected with packer (5), it is characterized in that: every grade of fracturing tool is connected and formed by 2 or 3 spray gun sliding sleeves (3), and the end of afterbody frac-sand jet is disposed with hydraulic anchor (6), ball-and-seat (7), screen casing (8), guide shoe (9).
2. horizontal well multi-stage jet fracturing tool according to claim 1, is characterized in that described packer (5) is K341 packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151156.5U CN203808964U (en) | 2014-03-31 | 2014-03-31 | Horizontal well multilevel ejection fracturing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151156.5U CN203808964U (en) | 2014-03-31 | 2014-03-31 | Horizontal well multilevel ejection fracturing tool |
Publications (1)
| Publication Number | Publication Date |
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| CN203808964U true CN203808964U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420151156.5U Expired - Fee Related CN203808964U (en) | 2014-03-31 | 2014-03-31 | Horizontal well multilevel ejection fracturing tool |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756647A (en) * | 2014-12-17 | 2016-07-13 | 中国石油天然气股份有限公司 | Hydraulic jet fracturing method adopting multi-stage and multi-cluster string fracturing and utilizing immobile strings |
| CN105986797A (en) * | 2015-02-13 | 2016-10-05 | 中国石油天然气股份有限公司 | Staged fracturing method of horizontal well |
| CN106567700A (en) * | 2015-10-08 | 2017-04-19 | 中国石油天然气股份有限公司 | Oil field reservoir modification method |
-
2014
- 2014-03-31 CN CN201420151156.5U patent/CN203808964U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756647A (en) * | 2014-12-17 | 2016-07-13 | 中国石油天然气股份有限公司 | Hydraulic jet fracturing method adopting multi-stage and multi-cluster string fracturing and utilizing immobile strings |
| CN105986797A (en) * | 2015-02-13 | 2016-10-05 | 中国石油天然气股份有限公司 | Staged fracturing method of horizontal well |
| CN105986797B (en) * | 2015-02-13 | 2018-12-25 | 中国石油天然气股份有限公司 | The staged fracturing method of horizontal well |
| CN106567700A (en) * | 2015-10-08 | 2017-04-19 | 中国石油天然气股份有限公司 | Oil field reservoir modification method |
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| Date | Code | Title | Description |
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| 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: 20140903 Termination date: 20170331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |