CN203394491U - Perforation and fracturing integrated tubular column for selectively and repeatedly reforming old well of oil field - Google Patents
Perforation and fracturing integrated tubular column for selectively and repeatedly reforming old well of oil field Download PDFInfo
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- CN203394491U CN203394491U CN201320320128.7U CN201320320128U CN203394491U CN 203394491 U CN203394491 U CN 203394491U CN 201320320128 U CN201320320128 U CN 201320320128U CN 203394491 U CN203394491 U CN 203394491U
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- fracturing
- tubular column
- packer
- perforation
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- 238000002407 reforming Methods 0.000 title abstract 2
- 230000009466 transformation Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The utility model discloses an old well selectivity of oil field is repeated reforms transform perforation fracturing integration tubular column is for accomplishing the repeated fracturing of reforming transform layer section and carrying out the benefit hole and the fracturing of newly-increased layer section and design. The tubular column is sequentially connected with a safety release, a controllable upper packer, a controllable middle packer, a hydraulic ejector, a lower packer, a ball seat, a check valve, an eye tube and a plug through an oil pipe, and the reconstruction of all intervals is completed through the procedures of perforation of newly-added intervals, setting and deblocking of the packer with controllable operation and the like. The tubular column combines the advantages of hydraulic jet fracturing and double-seal single-clamp fracturing, can effectively solve the problem of oil-gas old well repeated fracturing transformation, is simple in tubular column structure and operation, high in efficiency, can complete repeated fracturing of transformed intervals, can complete hole repairing and fracturing operations of newly added intervals, and can complete perforation and fracturing integrated operations only by one-time tubular column.
Description
Technical field
The utility model relates to a kind of oilfield old well selectively to be repeated to transform perforating and fracturing integrated pipe column, belongs to oil-gas field fracturing technical field.
Background technology
At present, conventional hydraulic sand blasting pressure break is that it can only guarantee the packing to lower floor construction section by dragging with the hydraulic sand blasting fracturing string of underseal construct multilayer or the multistage pressure break of well.For the old well of oil gas, newly-designed transformation interval may be distributed in the middle of the interval of having transformed, and with conventional tubing string, cannot meet the requirement that interval has been transformed on packing top.Conventional two envelope single deck tape-recorder pressure breaks need first to all construction intervals of construction well, carry out perforation, and the easy like this compacting infringement producing while causing nearly well band pore-forming, affects oil well productivity.
Summary of the invention
The purpose of this utility model is to provide a kind of oilfield old well selectively to repeat to transform perforating and fracturing integrated pipe column, and it can complete the refracturing of having transformed interval, also can increase perforations adding and the pressure break of interval newly.
It is as follows that oilfield old well selectively repeats to transform the technology contents of perforating and fracturing integrated pipe column:
This tubing string oil pipe lower end connects safety and gives up, the safety lower end of giving up connects the upper packer of controllable type by oil pipe, upper packer lower end connects the middle packer of controllable type by oil pipe, middle packer lower end connects hydraulic ejector, hydraulic ejector lower end connects lower packet, and lower packet lower end connects ball seat, and ball seat lower end connects ball-and-seat, ball-and-seat lower end connects eye Guan，Yan Guan lower end and connects plug.
The utility model combines the advantage of hydraulic jetting fracturing and two envelope single deck tape-recorder pressure breaks, can effectively solve the problem of the old well refracturing transformation of oil gas.At tubing string, be hampered cannot pull out of hole time, in tubing string safety topmost, give up and be convenient to trip out upper end tubing string.Tubular column structure and simple to operate, efficiency is high, both can complete the refracturing of having transformed interval, also can complete perforations adding and the pressure break of newly-increased interval, only needs one-trip string can complete the institutional operation of perforation and pressure break.
Accompanying drawing explanation
Fig. 1 is that oilfield old well selectively repeats to transform perforating and fracturing integrated pipe column schematic diagram.
The specific embodiment
Embodiment:
With reference to Fig. 1, embodiment of the present utility model is further illustrated:
The course of work of this tubing string is as follows:
The old well of a bite oilfield horizontal well of take is example, has two sections to transform interval, and perforations adding is transformed two sections of intervals with increasing newly again now:
1, according to repeating the needs of transformation and the interval of design, be lowered to this tubing string, hydraulic ejector 5 is aimed at the position A of the first new interval specking, carries out perforation;
2, repeatedly drag this tubing string, complete all perforating jobs that need transformation interval;
3, after all perforating jobs that need transform interval complete, transfer tubing string to initial position, i.e. safety 2 straight well sections that are positioned at this well of giving up, upper packer 3 is positioned at this well need transform the top of interval topmost, middle packer 4 is positioned at the top that this well needs to transform interval bottom, hydraulic ejector 5 aligned position A, lower packet 6 is positioned at the below that needs bottom to transform interval;
4, from well head, deliver steel ball, open the sliding sleeve in upper packer 3, start upper packer 3 and set, and then steel ball continues to move down, and opens the sliding sleeve in middle packer 4, and in also starting, packer 4 sets, and last steel ball falls in ball seat 7;
5,, after upper packer 3, middle packer 4 and lower packet 6 set, this tubing string has just formed the structure of similar two envelope single deck tape-recorder fracturing technology tubing strings, can directly carry out the pressing crack construction of orlop section;
6, after the pressing crack construction of orlop section completes, fracturing unit truck stops pumping, allows three removing seal for packers;
7, analogize in proper order, drag the position B of the new interval specking of tubing string to the second, repeat above-mentioned steps, complete the transformation of all intervals.
Claims (1)
1. oilfield old well selectively repeats to transform a perforating and fracturing integrated pipe column, it is characterized in that:
This tubing string oil pipe (1) lower end connects give up safely (2), safety is given up (2) lower end by the upper packer (3) of oil pipe (1) connection controllable type, upper packer (3) lower end connects the middle packer (4) of controllable type by oil pipe (1), middle packer (4) lower end connects hydraulic ejector (5), hydraulic ejector (5) lower end connects lower packet (6), lower packet (6) lower end connects ball seat (7), ball seat (7) lower end connects ball-and-seat (8), ball-and-seat (8) lower end connects eye pipe (9), eye pipe (9) lower end connects plug (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320320128.7U CN203394491U (en) | 2013-06-05 | 2013-06-05 | Perforation and fracturing integrated tubular column for selectively and repeatedly reforming old well of oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320320128.7U CN203394491U (en) | 2013-06-05 | 2013-06-05 | Perforation and fracturing integrated tubular column for selectively and repeatedly reforming old well of oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394491U true CN203394491U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320320128.7U Expired - Fee Related CN203394491U (en) | 2013-06-05 | 2013-06-05 | Perforation and fracturing integrated tubular column for selectively and repeatedly reforming old well of oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394491U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196512A (en) * | 2014-08-26 | 2014-12-10 | 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 | Oil well horizontal well oil jacket simultaneous injection type double-sealing single-clamping volume fracturing tubular column and fracturing method thereof |
| CN109505578A (en) * | 2019-01-09 | 2019-03-22 | 中国石油天然气股份有限公司 | Repeated fracturing method for realizing lateral residual oil potential excavation of crack of ultra-low permeability oil reservoir old well |
| CN112177581A (en) * | 2019-07-02 | 2021-01-05 | 中国石油天然气股份有限公司 | Repeated fracturing method for old well |
-
2013
- 2013-06-05 CN CN201320320128.7U patent/CN203394491U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196512A (en) * | 2014-08-26 | 2014-12-10 | 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 | Oil well horizontal well oil jacket simultaneous injection type double-sealing single-clamping volume fracturing tubular column and fracturing method thereof |
| CN104196512B (en) * | 2014-08-26 | 2017-12-26 | 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 | Oil well horizontal well oil jacket is the same as the double envelope single deck tape-recorder volume fracturing tubing strings of note formula and fracturing process |
| CN109505578A (en) * | 2019-01-09 | 2019-03-22 | 中国石油天然气股份有限公司 | Repeated fracturing method for realizing lateral residual oil potential excavation of crack of ultra-low permeability oil reservoir old well |
| CN112177581A (en) * | 2019-07-02 | 2021-01-05 | 中国石油天然气股份有限公司 | Repeated fracturing method for old well |
| CN112177581B (en) * | 2019-07-02 | 2022-06-03 | 中国石油天然气股份有限公司 | Repeated fracturing method for old well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20210605 |