CN105178934A - Horizontal well no-throttle straddle-type double-sealing single-grip fracturing process - Google Patents
Horizontal well no-throttle straddle-type double-sealing single-grip fracturing process Download PDFInfo
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- CN105178934A CN105178934A CN201510615434.7A CN201510615434A CN105178934A CN 105178934 A CN105178934 A CN 105178934A CN 201510615434 A CN201510615434 A CN 201510615434A CN 105178934 A CN105178934 A CN 105178934A
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Abstract
The invention belongs to the technical field of oilfield production engineering, relates to a horizontal well no-throttle straddle-type double-sealing single-grip fracturing process, and solves the technical field of the existing technology that the throttle construction emission is small and the pressure bearing index is low, and can satisfy the large-scale fracturing construction requirements. A well-connected device is put into a sleeve 2 and then a fracturing layer, a Y211 packer 8 is set, and then a pipe pole is pressed down and then a Y111 packer 6 is set, and a large sand-amount sand spraying device 7 works and fracturing is started. After fracturing, the pipe pole is lifted upwards, a pressure balance valve 3 opens, the device is continuously lifted upwards and the Y211 packer 8 and the Y111 packer 6 are released. The setting and the releasing adopt the mechanical way, the construction efficiency is high, the pressure bearing index is high, and the horizontal well no-throttle straddle-type double-sealing single-grip fracturing process is more suitable for large-scale multi-stage multi-group fracturing construction.
Description
Technical field
The present invention relates to oil extraction in oil field field of engineering technology, belong to a kind of horizontal well for oil field without throttling straddle type two envelope single deck tape-recorder fracturing technology.
Background technology
The conventional pressure differential formula packer of current Staged Fracturing Technique In Horizontal Wells application needs to design flow nipple, there is the problem that staged fracturing of horizontal well technology operational discharge capacity is little, add sand small scale.When conventional packer also exists hydraulic setting, deblocking, affect serious problem by oil jacket pressure reduction.
Summary of the invention
The object of the invention is development and can realize large sand amount, high discharge capacity multistage massive hydraulic fracture, can realize that machinery sets simultaneously, the horizontal well of deblocking is without throttling straddle type two envelope single deck tape-recorder fracturing technology.
The present invention is by realizing with lower device: it is made up of oil pipe, sleeve pipe, equilibrated valve, safety joint, hydraulic anchor, Y111 packer, large sand amount sandblaster, Y211 packer; Wherein equilibrated valve, safety joint, hydraulic anchor, Y111 packer, large sand amount sandblaster, Y211 packer is connected with oil pipe by screw thread successively, and above-mentioned technique is realized by following steps:
A, first by equilibrated valve, safety joint, hydraulic anchor, Y111 packer, large sand amount sandblaster, Y211 packer is connected with oil pipe by screw thread successively, under enter in sleeve pipe;
Secondly b, by entering under this device to pre-fractured interval, first, carrying this device, setting Y211 packer, then observe construction curve and test envelope, guarantee Y211 packer setting, then transfer this device, set Y111 packer;
After c, Y111 packer and Y211 packer all set, pump into prepad fluid, the anchor fluke expenditure grappling sleeve pipe of hydraulic anchor, during pressure break, prepad fluid is entered by large sand amount sandblaster, adds sand, completes pressure break;
After d, pressure break, above carry this device, equilibrated valve is opened, and continuation is carried this device, Y111 packer and Y211 removing seal for packer;
E, on carry this device to next interval, repeat the pressure break that a-d step realizes each interval.
The present invention compared with the prior art tool has the following advantages:
In the present invention, Y111 packer and Y211 packer adopt that mechanical system sets, deblocking packer, do not affect by oil jacket pressure reduction, process pipe string without the need to throttling, without the need to open flow diffusion pressure after pressure break, the higher more environmental protection of efficiency of construction.Compression type glue barrel heatproof, pressure-bearing index are higher, more adapt to extensive multistage many bunches of pressing crack constructions, are a kind of fractured horizontal well technique of safe, efficient, environmental protection.
accompanying drawing illustrates:fig. 1 is application schematic diagram in scene of the present invention.
detailed description of the invention:below in conjunction with accompanying drawing, auspicious further stating is done to the present invention: the present invention is by realizing with lower device: it is made up of 1-oil pipe, 2-sleeve pipe, 3-equilibrated valve, 4-safety joint, 5-hydraulic anchor, 6-Y111 packer, 7-large sand amount sandblaster, 8-Y211 packer; Wherein equilibrated valve 3, safety joint 4, hydraulic anchor 5, Y111 packer 6, large sand amount sandblaster 7, Y211 packer 8 is connected with oil pipe 1 by screw thread successively, and above-mentioned technique is realized by following steps:
A, first by equilibrated valve 3, safety joint 4, hydraulic anchor 5, Y111 packer 6, large sand amount sandblaster 7, Y211 packer 8 is connected with oil pipe 1 by screw thread successively, under enter in sleeve pipe 2;
Secondly b, by entering under this device to pre-fractured interval, first, carrying this device, setting Y211 packer 8, then observe construction curve and test envelope, guarantee that Y211 packer 8 sets, then transfer this device, set Y111 packer 6;
After c, Y111 packer (6) and Y211 packer 8 all set, pump into prepad fluid, the anchor fluke expenditure grappling sleeve pipe 2 of hydraulic anchor 5, during pressure break, prepad fluid is entered by large sand amount sandblaster 7, adds sand, completes pressure break;
After d, pressure break, above carry this device, equilibrated valve 3 is opened, and continuation is carried this device, Y111 packer 6 and Y211 packer 8 deblocking;
E, on carry this device to next interval, repeat a-d step twice, realize the pressure break of three intervals.
Claims (1)
1. horizontal well is without throttling straddle type two envelope single deck tape-recorder fracturing technology, and this technique is by realizing with lower device: it is made up of oil pipe (1), sleeve pipe (2), equilibrated valve (3), safety joint (4), hydraulic anchor (5), Y111 packer (6), large sand amount sandblaster (7), Y211 packer (8); Wherein equilibrated valve (3), safety joint (4), hydraulic anchor (5), Y111 packer (6), large sand amount sandblaster (7), Y211 packer (8) is connected with oil pipe (1) by screw thread successively, it is characterized in that: above-mentioned technique is realized by following steps:
A, first by equilibrated valve (3), safety joint (4), hydraulic anchor (5), Y111 packer (6), large sand amount sandblaster (7), Y211 packer (8) is connected with oil pipe (1) by screw thread successively, under enter in sleeve pipe (2);
Secondly b, by entering under this device to pre-fractured interval, first, carrying this device, setting Y211 packer (8), then observe construction curve and test envelope, guarantee that Y211 packer (8) sets, then transfer this device, set Y111 packer (6);
After c, Y111 packer (6) and Y211 packer (8) all set, pump into prepad fluid, anchor fluke expenditure grappling sleeve pipe (2) of hydraulic anchor (5), during pressure break, prepad fluid is entered by large sand amount sandblaster (7), adds sand, completes pressure break;
After d, pressure break, above carry this device, equilibrated valve (3) is opened, and continuation is carried this device, Y111 packer (6) and Y211 packer (8) deblocking;
E, on carry this device to next interval, repeat the pressure break that a-d step realizes each interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510615434.7A CN105178934A (en) | 2015-09-24 | 2015-09-24 | Horizontal well no-throttle straddle-type double-sealing single-grip fracturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510615434.7A CN105178934A (en) | 2015-09-24 | 2015-09-24 | Horizontal well no-throttle straddle-type double-sealing single-grip fracturing process |
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| Publication Number | Publication Date |
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| CN105178934A true CN105178934A (en) | 2015-12-23 |
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| CN201510615434.7A Pending CN105178934A (en) | 2015-09-24 | 2015-09-24 | Horizontal well no-throttle straddle-type double-sealing single-grip fracturing process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443101A (en) * | 2016-01-14 | 2016-03-30 | 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 | Compression type double-sealing and single-clamping subsection fracturing process pipe column and fracturing method thereof |
| CN105507887A (en) * | 2015-12-31 | 2016-04-20 | 中国石油天然气股份有限公司 | High-water-content horizontal well tracer injection water exploration process and string |
| CN110359894A (en) * | 2019-06-26 | 2019-10-22 | 天地科技股份有限公司 | A kind of hydraulic fracturing pressure releasing method and device |
| CN111622698A (en) * | 2020-05-19 | 2020-09-04 | 中国石油天然气股份有限公司 | Hydraulic throwing tool for underground restrictor and use method thereof |
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| US7637317B1 (en) * | 2006-10-06 | 2009-12-29 | Alfred Lara Hernandez | Frac gate and well completion methods |
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| CN103573241A (en) * | 2013-08-06 | 2014-02-12 | 中国石油天然气股份有限公司 | Casing cementing pressure balancing sliding sleeve annulus staged sand fracturing process for horizontal well |
| CN203614088U (en) * | 2013-12-22 | 2014-05-28 | 盐城市鼎兴石油机械制造有限公司 | Gas-well two-layer fracturing tool |
| CN104153753A (en) * | 2014-08-26 | 2014-11-19 | 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 | Horizontal well volume fracturing tubular column and method based on conventional oil tube pressure dragging |
| CN203961938U (en) * | 2014-05-23 | 2014-11-26 | 中国石油化工股份有限公司 | Packer staged fracturing technology tube pillar in a kind of horizontal well tube |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7637317B1 (en) * | 2006-10-06 | 2009-12-29 | Alfred Lara Hernandez | Frac gate and well completion methods |
| CN201412134Y (en) * | 2009-06-02 | 2010-02-24 | 中国石油天然气股份有限公司 | Small-casing pipe string for multilayer fracturing |
| CN103573241A (en) * | 2013-08-06 | 2014-02-12 | 中国石油天然气股份有限公司 | Casing cementing pressure balancing sliding sleeve annulus staged sand fracturing process for horizontal well |
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| CN203961938U (en) * | 2014-05-23 | 2014-11-26 | 中国石油化工股份有限公司 | Packer staged fracturing technology tube pillar in a kind of horizontal well tube |
| CN104153753A (en) * | 2014-08-26 | 2014-11-19 | 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 | Horizontal well volume fracturing tubular column and method based on conventional oil tube pressure dragging |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507887A (en) * | 2015-12-31 | 2016-04-20 | 中国石油天然气股份有限公司 | High-water-content horizontal well tracer injection water exploration process and string |
| CN105443101A (en) * | 2016-01-14 | 2016-03-30 | 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 | Compression type double-sealing and single-clamping subsection fracturing process pipe column and fracturing method thereof |
| CN110359894A (en) * | 2019-06-26 | 2019-10-22 | 天地科技股份有限公司 | A kind of hydraulic fracturing pressure releasing method and device |
| CN111622698A (en) * | 2020-05-19 | 2020-09-04 | 中国石油天然气股份有限公司 | Hydraulic throwing tool for underground restrictor and use method thereof |
| CN111622698B (en) * | 2020-05-19 | 2024-01-30 | 中国石油天然气股份有限公司 | Downhole choke hydraulic delivery tool and use method thereof |
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