CN102022104B - Open-hole packer for open-hole horizontal well and preset connector fracturing well completion method - Google Patents
Open-hole packer for open-hole horizontal well and preset connector fracturing well completion method Download PDFInfo
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- CN102022104B CN102022104B CN 201010534189 CN201010534189A CN102022104B CN 102022104 B CN102022104 B CN 102022104B CN 201010534189 CN201010534189 CN 201010534189 CN 201010534189 A CN201010534189 A CN 201010534189A CN 102022104 B CN102022104 B CN 102022104B
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Abstract
The invention relates to the technical field of oilfield production engineering, belongs to an oilfield open-hole packer horizontal well fracturing well completion method, and aims to solve the problem that: in the conventional common sliding sleeve type staged fracturing well completion process, a sliding sleeve is difficult to open due to the influence of stratigraphic back pressure sometimes. The oilfield open-hole packer horizontal well fracturing well completion method mainly comprises the following steps of: delivering a well completion pipe string to a preset position through a deliver pipe column; delivering a setting pipe column and gradually setting the open-hole packer 4; and when fracturing is needed, delivering a fracturing pipe column to complete all interval fracturing. The oilfield open-hole packer horizontal well fracturing well completion method has the advantages that: the internal drift diameter of well completion is large, the number of treated segments is large, fracturing after delivery can be firstly obtained, and fracturing, acidification, water plugging measures can be performed on any interval and the like.
Description
Technical field: the present invention relates to the oil field technical field of oil production engineering, belong to a kind of oil field open hole packer fractured horizontal well completion method.
Background technology: at present external bore hole pressure break completion adopts the bore hole external packer of pipe to separate the stratum more, and the mode of sliding sleeve pressure break is opened in pitching, but exist sliding sleeve to open difficulty, needs brill mills ball seat and could guarantee the run through casing size shortcoming.Therefore developed open hole packer horizontal well perforated pipe pressure break completion tubular column, it can realize horizontal well bore hole staged fracturing completion, greatly reduces construction cost, has avoided sliding sleeve to open construction risks such as difficulty simultaneously.Need not bore behind the pressing crack construction of the present invention and mill the interior latus rectum that just can guarantee the pipe string, be convenient to production and the shutoff adjustment of interval.
Summary of the invention: the objective of the invention is to develop and a kind ofly can separate the stratum at horizontal well, can guarantee run through casing size again, be convenient to the open-hole horizontal well open hole packer of follow-up pressure break, water blockoff, water filling job execution and preset linker pressure break completion method.
The present invention is by realizing with lower device: this device by deliver tubing string, set tubing string, three times tubing strings of fracturing string are realized, wherein deliver tubing string by drilling rod, hanging packer, sleeve pipe, open hole packer, preset linker, float shoe is formed; Set tubing string by oil pipe, left K344 packer, restriction choke, right K344 packer, dead stifled the composition; Fracturing string is made up of oil pipe, safety joint, centralizer, hydraulic anchor, left K344 packer, pilot sandblaster, right K344 packer, dead the blocking up of guiding; Above-mentioned technology realizes by following steps:
A, at first will deliver tubing string drilling rod, hanging packer, sleeve pipe, open hole packer, preset linker, float shoe connects successively, down to the horizontal well precalculated position;
B, secondly be lowered to successively the oil pipe that connects, left K344 packer, restriction choke, right K344 packer, dead stifled form set tubing string, and restriction choke aimed at open hole packer and hanging packer, ground fluid injection then, restriction choke produces chock pressure difference, make left and right sides K344 packer setting, separate open hole packer, liquid comes out to enter in open hole packer and the hanging packer through the hole of restriction choke, open hole packer and hanging packer are set, put forward mode on utilizing at last and set open hole packer and hanging packer step by step, trip out after setting and set tubing string;
C, be lowered to successively the dead stifled fracturing string of forming of the oil pipe, safety joint, centralizer, hydraulic anchor, left K344 packer, pilot sandblaster, right K344 packer, the guiding that connect then; After oil pipe carries and arrives the interior precalculated position of sleeve pipe under this fracturing string, sit well head, ground fluid injection then, the pilot sandblaster produces chock pressure difference and makes left and right sides K344 packer setting, separated oil layer section, liquid comes out to through the side opening of pilot sandblaster and presets linker and enter into the stratum, presses off the stratum, upper lifting pipe post behind the intact interval of pressure break is finished the pressing crack construction of all intervals piecemeal.
Compared with the prior art the present invention has following advantage:
1) completion mode is simple, after open hole packer sets sealing, can be divided into several sections to the stratum.
2) latus rectum is big in the tubing string inner sleeve, and hop count is many, can carry out measure to certain interval arbitrarily, can significantly reduce cost.
Description of drawings: Fig. 1 is for delivering the tubular column structure sketch; Fig. 2 is setting pipe rod structure sketch; Fig. 3 is the fracturing string structure diagram.
The specific embodiment: the invention will be further described below in conjunction with accompanying drawing: the present invention is by realizing with lower device: this device by deliver tubing string, set tubing string, three times tubing strings of fracturing string are realized, wherein deliver tubing string by drilling rod 1, hanging packer 2, sleeve pipe 3, open hole packer 4, preset linker 5, float shoe 6 is formed; Set tubing string by oil pipe 7, left K344 packer 8, restriction choke 9, right K344 packer 8, extremely stifled 10 form; Fracturing string is made up of oil pipe 11, safety joint 12, centralizer 13, hydraulic anchor 14, left K344 packer 15, pilot sandblaster 16, right K344 packer 15, guiding dead stifled 17; Above-mentioned technology realizes by following steps:
A, at first will deliver tubing string drilling rod 1, hanging packer 2, sleeve pipe 3, open hole packer 4, preset linker 5, float shoe 6 and connect successively, down to the horizontal well precalculated position; According to geologic requirements, with open hole packer 4 horizontal segment is divided into 6 well sections, there are 6 intervals to need following 6 of pressure break to preset linker, after putting in place under the tubing string, after giving up, hanging packer trips out drilling rod 1.
B, next is lowered to the oil pipe 7 that connects successively, left side K344 packer 8, restriction choke 9, right K344 packer 8, the dead tubing string that sets that blocks up 10 compositions, and with restriction choke 9 aligning open hole packer 4 and hanging packers 2, ground fluid injection then, restriction choke 9 produces chock pressure difference, left and right sides K344 packer 8 is set, separate open hole packer 4, liquid is in open hole packer 4 and hanging packer 2 are come out to enter in the hole of restriction choke 9, open hole packer 4 and hanging packer 2 are set, put forward mode on utilizing at last and set open hole packer 4 and hanging packer 2 step by step, trip out after setting and set tubing string;
C, be lowered to the oil pipe 11 that connects successively then, safety joint 12, centralizer 13, hydraulic anchor 14, left side K344 packer 15, pilot sandblaster 16, right K344 packer 15, dead stifled 17 fracturing strings of forming of guiding, after oil pipe 11 carries and arrives sleeve pipe 3 interior precalculated positions under this fracturing string, sit well head, ground fluid injection then, pilot sandblaster 16 produces chock pressure difference sets left and right sides K344 packer 15, separated oil layer section, liquid comes out to through the side opening of pilot sandblaster 16 and presets linker 5 and enter into the stratum, press off the stratum, upper lifting pipe post behind the intact interval of pressure break, make this tool string advance to another interval and carry out pressure break, one-trip string just can be finished 6 sections pressure breaks like this.
Claims (1)
1. open-hole horizontal well open hole packer and preset linker pressure break completion method, it is characterized in that: it is by realizing with lower device: this device by deliver tubing string, set tubing string, three times tubing strings of fracturing string are realized, wherein deliver tubing string by drilling rod (1), hanging packer (2), sleeve pipe (3), open hole packer (4), preset linker (5), float shoe (6) is formed; Setting tubing string is made up of oil pipe (7), left K344 packer (8), restriction choke (9), right K344 packer (8), plug (10); Fracturing string is made up of oil pipe (11), safety joint (12), centralizer (13), hydraulic anchor (14), left K344 packer (15), pilot sandblaster (16), right K344 packer (15), guiding plug (17); Above-mentioned technology realizes by following steps:
A, at first will deliver tubing string drilling rod (1), hanging packer (2), sleeve pipe (3), open hole packer (4), preset linker (5), float shoe (6) connects successively, down to the horizontal well precalculated position;
B, secondly be lowered to successively the tubing string that sets that the oil pipe (7), left K344 packer (8), restriction choke (9), right K344 packer (8), the plug (10) that connect form; And with restriction choke (9) aligning open hole packer (4) and hanging packer (2), ground fluid injection then, restriction choke (9) produces chock pressure difference, left and right sides K344 packer (8) is set, separate open hole packer (4), liquid is in open hole packer (4) and hanging packer (2) are come out to enter in the hole of restriction choke (9), open hole packer (4) and hanging packer (2) are set, put forward mode on utilizing at last and set open hole packer (4) and hanging packer (2) step by step, trip out after setting and set tubing string;
C, be lowered to successively the fracturing string that the oil pipe (11), safety joint (12), centralizer (13), hydraulic anchor (14), left K344 packer (15), pilot sandblaster (16), right K344 packer (15), the guiding plug (17) that connect are formed then; After oil pipe (11) carries and arrives the interior precalculated position of sleeve pipe (3) under this fracturing string, set well head, ground fluid injection then, pilot sandblaster (16) produces chock pressure difference sets left and right sides K344 packer (15), separated oil layer section, liquid comes out to through the side opening of pilot sandblaster (16) and presets linker (5) and enter into the stratum, presses off the stratum, upper lifting pipe post behind the intact interval of pressure break is finished the pressing crack construction of all intervals piecemeal.
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CN102022104B true CN102022104B (en) | 2013-08-14 |
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Families Citing this family (15)
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CN103132967A (en) * | 2011-12-01 | 2013-06-05 | 阜新驰宇石油机械有限公司 | Multilateral well fracturing hanging well completion process device |
CN103132970B (en) * | 2011-12-05 | 2016-01-06 | 中国石油化工股份有限公司 | Staged fracturing tubing system and using method thereof |
CN103306636B (en) * | 2012-03-15 | 2015-12-09 | 中国石油化工股份有限公司 | A kind of completion tubular string and cemented method |
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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CN106939784A (en) * | 2017-01-13 | 2017-07-11 | 上海全泽能源科技有限公司 | The positioning acidizing device of stratified injection well |
CN109707358B (en) * | 2017-10-25 | 2023-09-05 | 中海石油(中国)有限公司上海分公司 | Fracturing string and fracturing method thereof |
CN110017133B (en) * | 2019-05-23 | 2024-05-10 | 广州海洋地质调查局 | Method and device for testing output profile of horizontal well and plugging water |
CN111236909A (en) * | 2020-03-03 | 2020-06-05 | 深圳市百勤石油技术有限公司 | Full-bore infinite staged fracturing tool and using method thereof |
CN111648754A (en) * | 2020-05-19 | 2020-09-11 | 中国石油天然气股份有限公司 | Coiled tubing fracturing and downhole throttling production integrated process pipe column and method thereof |
CN111608633A (en) * | 2020-06-30 | 2020-09-01 | 中国石油天然气股份有限公司 | Large-scale fracturing process suitable for horizontal well |
CN115045635A (en) * | 2022-06-07 | 2022-09-13 | 西南石油大学 | Tool and method suitable for downhole pressurized well completion of gas and liquid drilling |
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Effective date of registration: 20220106 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 233 South Central Avenue Patentee after: Daqing Oilfield Co.,Ltd. Patentee after: PetroChina Co Ltd Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 233 South Central Avenue Patentee before: Daqing Oilfield Co.,Ltd. |
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