CN104213893A - Perforating and fracturing integrated pipe column for selective re-transformation of old well of oil field and working method thereof - Google Patents
Perforating and fracturing integrated pipe column for selective re-transformation of old well of oil field and working method thereof Download PDFInfo
- Publication number
- CN104213893A CN104213893A CN201310220039.XA CN201310220039A CN104213893A CN 104213893 A CN104213893 A CN 104213893A CN 201310220039 A CN201310220039 A CN 201310220039A CN 104213893 A CN104213893 A CN 104213893A
- Authority
- CN
- China
- Prior art keywords
- fracturing
- interval
- packer
- perforating
- transformation
- 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.)
- Granted
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a perforating and fracturing integrated pipe column for selective re-transformation of an old well of an oil field and the working method of the pipe column. The perforating and fracturing integrated pipe column for selective re-transformation of the old well of the oil field and the working method of the pipe column are designed to achieve re-fracturing of a transformed interval and re-perforating and fracturing of a new interval. The pipe column is connected with a safety releasing device, an upper controllable packer, an intermediate controllable packer, a hydraulic ejector, a lower packer, a ball seat, a check valve, an eye pipe and a plug in sequence through an oil pipe, and transformation of all intervals is achieved by conducting perforation on the new interval, operating the controllable packers to conduct packing and unpacking and other processes. According to the pipe column, the advantages of hydraulic jet fracturing and the advantages of dual-packing and single-clamping fracturing are combined, re-fracturing and re-transformation of the old well of the oil field can be achieved effectively, the pipe column is simple in structure, easy to operate, high in efficiency, and capable of achieving re-fracturing of the transformed interval and re-perforating and fracturing of the new interval, and perforating and fracturing can be achieved integrally through one pipe column.
Description
Technical field
The present invention relates to a kind of oilfield old well and selectively repeat to transform perforating and fracturing integrated pipe column and method of work thereof, belong to oil-gas field fracturing technical field.
Background technology
At present, conventional hydraulic sand blasting pressure break is that it can only ensure 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, the requirement that cannot meet packing top and transformed interval with conventional tubing string.Conventional two envelope single deck tape-recorder pressure breaks need first carry out perforation to all construction intervals of construction well, and the easy like this compacting infringement producing while causing nearly well band pore-forming, affects oil well productivity.
Summary of the invention
The object of the present invention is to provide a kind of oilfield old well selectively to repeat to transform perforating and fracturing integrated pipe column and method of work thereof, 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 pipe, and eye pipe lower end connects plug.
The method of work that oilfield old well selectively repeats to transform perforating and fracturing integrated pipe column is as follows:
1, according to repeating the needs of transformation and the interval of design, be lowered to this tubing string, hydraulic ejector is aimed at the position 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, safety is given up and is positioned at the straight well section of this well, upper packer is positioned at this well needs the top of transformation interval topmost, middle packer is positioned at this well needs to transform the top of interval bottom, hydraulic ejector is aimed at the position of the first new interval specking, and lower packet is positioned at the below that needs bottom to transform interval;
4, deliver steel ball from well head, open the sliding sleeve in upper packer, start upper packer and set, and then steel ball continues to move down, and opens the sliding sleeve in middle packer, and in also starting, packer 4 sets, and last steel ball falls in ball seat 7;
5, after upper packer, middle packer and lower packet 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, the like, drag the newly position of interval specking of tubing string to the second, repeat above-mentioned steps, complete the transformation of all intervals.
The present invention 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.Be hampered cannot pull out of hole time at tubing string, give up and be convenient to trip out upper end tubing string in tubing string safety topmost.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.
Brief description of the drawings
Fig. 1 is that oilfield old well selectively repeats to transform perforating and fracturing integrated pipe column schematic diagram.
Detailed description of the invention
Embodiment:
With reference to Fig. 1, embodiments of the invention are further illustrated:
Oil pipe 1 lower end of this tubing string connects safety and gives up 2, safety 2 lower ends of giving up connect the upper packer 3 of controllable type by oil pipe 1, upper packer 3 lower ends connect the middle packer 4 of controllable type by oil pipe 1, middle packer 4 lower ends connect hydraulic ejector 5, hydraulic ejector 5 lower ends connect lower packet 6, and lower packet 6 lower ends connect ball seat 7, and ball seat 7 lower ends connect ball-and-seat 8, ball-and-seat 8 lower ends connect eye pipe 9, and eye pipe 9 lower ends connect plug 10.
The method of work of this tubing string is as follows:
Taking the old well of a bite oilfield horizontal well as example, there are two sections to transform interval, 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, the i.e. safety 2 straight well sections that are positioned at this well of giving up, upper packer 3 is positioned at this well needs the top of transformation interval topmost, middle packer 4 is positioned at this well needs to transform the top of interval bottom, hydraulic ejector 5 A that aims the place, lower packet 6 is positioned at the below that needs bottom to transform interval;
4, deliver steel ball from well head, 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 (2)
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),
2. oilfield old well selectively repeats to transform a method of work for perforating and fracturing integrated pipe column, it is characterized in that its job step is as follows:
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, safe give up (2) are positioned at the straight well section of this well, upper packer (3) is positioned at this well needs the top of transformation interval topmost, middle packer (4) is positioned at this well needs to transform the top of interval bottom, hydraulic ejector (5) is aimed at the position (A) of the first new interval specking, and lower packet (6) is positioned at the below that needs bottom to transform interval;
4) deliver steel ball from well head, open the sliding sleeve in upper packer (3), starting upper packer (3) sets, and then steel ball continues to move down, open the sliding sleeve in middle packer (4), also in 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) the like, drag the newly position (B) of interval specking of tubing string to the second, repeat above-mentioned steps, complete the transformation of all intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220039.XA CN104213893B (en) | 2013-06-05 | 2013-06-05 | Oilfield old well selectivity repeats to transform perforating and fracturing integrated pipe column and method of work thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220039.XA CN104213893B (en) | 2013-06-05 | 2013-06-05 | Oilfield old well selectivity repeats to transform perforating and fracturing integrated pipe column and method of work thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104213893A true CN104213893A (en) | 2014-12-17 |
| CN104213893B CN104213893B (en) | 2016-08-10 |
Family
ID=52095762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310220039.XA Active CN104213893B (en) | 2013-06-05 | 2013-06-05 | Oilfield old well selectivity repeats to transform perforating and fracturing integrated pipe column and method of work thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104213893B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275442A (en) * | 2015-10-29 | 2016-01-27 | 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 | Old well re-transformation volume fracturing technology |
| CN107965305A (en) * | 2016-10-20 | 2018-04-27 | 中国石油化工股份有限公司 | One kind layering refracturing method |
| CN110359893A (en) * | 2018-04-09 | 2019-10-22 | 中国石油天然气股份有限公司 | Mine sprays fracturing device and operational method |
| CN110671058A (en) * | 2019-09-10 | 2020-01-10 | 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 | Double-sealing single-clamping process pipe column of old horizontal well and method for realizing large-discharge transformation |
| 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 |
| CN113586017A (en) * | 2021-08-31 | 2021-11-02 | 中国石油天然气股份有限公司 | Perforating and sand-preventing integrated pipe column suitable for volcanic reservoir and using method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201144682Y (en) * | 2008-01-16 | 2008-11-05 | 中国石油化工股份有限公司西南油气分公司工程技术研究院 | Multiple fracturing pipe column for petroleum and gas well |
| US20110139456A1 (en) * | 2009-07-20 | 2011-06-16 | Conocophillips Company | Controlled Fracture Initiation Stress Packer |
| CN201902202U (en) * | 2010-11-25 | 2011-07-20 | 中国石油化工股份有限公司 | Staged fracturing string of oil-gas horizontal well |
| CN202250014U (en) * | 2011-10-08 | 2012-05-30 | 华鼎鸿基石油工程技术(北京)有限公司 | Dual-packing single-clamping staged fracturing tool |
| CN102691495A (en) * | 2012-05-18 | 2012-09-26 | 中国石油天然气股份有限公司 | High-broken-pressure stratum horizontal well sectional-fracturing method for well cementation and completion of casing |
| US20120247775A1 (en) * | 2011-04-01 | 2012-10-04 | Daniel Keith Moeller | Downhole tool with pumpable section |
-
2013
- 2013-06-05 CN CN201310220039.XA patent/CN104213893B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201144682Y (en) * | 2008-01-16 | 2008-11-05 | 中国石油化工股份有限公司西南油气分公司工程技术研究院 | Multiple fracturing pipe column for petroleum and gas well |
| US20110139456A1 (en) * | 2009-07-20 | 2011-06-16 | Conocophillips Company | Controlled Fracture Initiation Stress Packer |
| CN201902202U (en) * | 2010-11-25 | 2011-07-20 | 中国石油化工股份有限公司 | Staged fracturing string of oil-gas horizontal well |
| US20120247775A1 (en) * | 2011-04-01 | 2012-10-04 | Daniel Keith Moeller | Downhole tool with pumpable section |
| CN202250014U (en) * | 2011-10-08 | 2012-05-30 | 华鼎鸿基石油工程技术(北京)有限公司 | Dual-packing single-clamping staged fracturing tool |
| CN102691495A (en) * | 2012-05-18 | 2012-09-26 | 中国石油天然气股份有限公司 | High-broken-pressure stratum horizontal well sectional-fracturing method for well cementation and completion of casing |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275442A (en) * | 2015-10-29 | 2016-01-27 | 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 | Old well re-transformation volume fracturing technology |
| CN107965305A (en) * | 2016-10-20 | 2018-04-27 | 中国石油化工股份有限公司 | One kind layering refracturing method |
| CN107965305B (en) * | 2016-10-20 | 2019-12-24 | 中国石油化工股份有限公司 | Layered repeated fracturing method |
| CN110359893A (en) * | 2018-04-09 | 2019-10-22 | 中国石油天然气股份有限公司 | Mine sprays fracturing device and operational method |
| CN110359893B (en) * | 2018-04-09 | 2021-11-30 | 中国石油天然气股份有限公司 | Mine jet fracturing device and operation method |
| 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 |
| CN110671058A (en) * | 2019-09-10 | 2020-01-10 | 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 | Double-sealing single-clamping process pipe column of old horizontal well and method for realizing large-discharge transformation |
| CN113586017A (en) * | 2021-08-31 | 2021-11-02 | 中国石油天然气股份有限公司 | Perforating and sand-preventing integrated pipe column suitable for volcanic reservoir and using method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104213893B (en) | 2016-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104213893A (en) | Perforating and fracturing integrated pipe column for selective re-transformation of old well of oil field and working method thereof | |
| CN104213894B (en) | Oilfield old well selectivity refracturing technique | |
| CN104213891A (en) | Coiled tubing controllable packer process tubular column for repeated oil well transformation | |
| CN203321476U (en) | Coiled tubing controllable packer technique pipe for repeated reconstruction of old wells | |
| CN103032060A (en) | Continuous oil pipe hydraulic sanding blasting multi-cluster perforation annular sanding staged fracturing process for horizontal well | |
| CN201412133Y (en) | Pipe string for multi-stage drag fracturing of horizontal well | |
| CN103573241A (en) | Casing cementing pressure balancing sliding sleeve annulus staged sand fracturing process for horizontal well | |
| CN103821489B (en) | Horizontal well machinery layering is acidified combination process tubing string with hydraulic jetting fracturing | |
| CN203961938U (en) | Packer staged fracturing technology tube pillar in a kind of horizontal well tube | |
| CN2856407Y (en) | Perforating and fracturing string of horizontal well | |
| CN203626787U (en) | Pipe string capable of realizing perforating and fracturing integration through hydraulic jetting fracturing technique and double-packer single-chuck fracturing technique | |
| CN203394491U (en) | Integrated perforating and fracturing tubing string for selective and repetitive reconstruction of old well in oil field | |
| CN104563997A (en) | Water-jet and bridge plug combined process tubing string and work thereof | |
| CN104632167A (en) | Hydraulic jet double-seal single-blockage perforation and fracturing integrated process pipe string | |
| CN204082116U (en) | Oil well horizontal well oil jacket is with note formula two envelope single deck tape-recorder volume fracturing tubing string | |
| CN203188991U (en) | Sliding sleeve type layered eight-level fracturing pipe column | |
| CN105221094A (en) | Horizontal well two envelope single deck tape-recorder Technics of Prevention of Well Blowout | |
| CN104847324A (en) | Injection recovery auxiliary device and injection recovery system and method thereof | |
| CN204041042U (en) | A kind of coiled tubing drag fracturing tubing string | |
| CN102182439B (en) | Balanced-pressure perforation/negative-pressure backflow process | |
| CN201057037Y (en) | One-time lifted fracturing string of horizontal well | |
| CN202900204U (en) | Downhole throttle device for coiled tubing | |
| CN105089598A (en) | Rupture starting sliding sleeve | |
| CN202152661U (en) | Anchoring type graded deblocking packer for oil well | |
| CN104074487A (en) | Packer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |