[1]刘昕  祝绍功  李博睿  王静  于喆  张宏岩.大庆油田套损井大规模压裂工艺及配套工具[J].石油钻采工艺,2018,40(4):499-502.[doi:10.13639/j.odpt.2018.04.017]
 LIU Xin,ZHU Shaogong,LI Borui,et al.Large-scale fracturing technology suitable for casing damaged wells in Daqing Oilfield and its supporting tools[J].Oil Drilling & Production Technology,2018,40(4):499-502.[doi:10.13639/j.odpt.2018.04.017]
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大庆油田套损井大规模压裂工艺及配套工具
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《石油钻采工艺》[ISSN:1000-7393/CN:13-1072/TE]

卷:
40卷
期数:
2018年4期
页码:
499-502
栏目:
油气开采
出版日期:
2018-07-20

文章信息/Info

Title:
Large-scale fracturing technology suitable for casing damaged wells in Daqing Oilfield and its supporting tools
文章编号:
1000 – 7393( 2018 )04 – 0499– 04
作者:
刘昕1  祝绍功1  李博睿1  王静1  于喆2  张宏岩1
1. 中国石油大庆油田有限责任公司采油工程研究院; 2. 中国石油大庆油田有限责任公司第五采油厂第一油矿九区三队
Author(s):
LIU Xin1 ZHU Shaogong1 LI Borui1 WANG Jing1 YU Zhe2 ZHANG Hongyan1
1. Production Engineering Research Institute, PetroChina Daqing Oilfield Company, Daqing 163453, Heilongjiang, China; 2. No.5 Production Plant, PetroChina Daqing Oilfield Company, Daqing 163453, Heilongjiang, China
关键词:
套损井大规模压裂胶筒小直径封隔器
Keywords:
casing damaged well large-scale fracturing rubber cylinder small diameter packer
分类号:
TE934
DOI:
10.13639/j.odpt.2018.04.017
文献标志码:
B
摘要:
大庆油田累计套损井近万口,为了动用这些压裂程度低、剩余油相对富集的潜力井,开展了多级大规模压裂工艺研究。通过有限元软件分析胶筒肩部角度、长度与应力之间的关系,并通过油浸实验验证了胶筒在大形变下的耐温承压性能;应用自编软件优化调整关键部件尺寸,设计了工艺配套工具。最终确定了小直径封隔器胶筒肩部角度50°,长度550 mm;小直径喷砂器能够针对套管内径大于?104 mm 的套损井进行施工,工艺覆盖率提升至70%;新型锚定工具可确保工具通过套损点并使管柱稳定;双功能防喷封隔器能够实现目的层封隔及油管防喷。现场试验结果表明,该工艺及配套工具能够用于套损井压裂,单趟管柱可压裂5 层,砂量289 m3,初步实现了套损井大规模压裂施工。
Abstract:
There are cumulatively about 10 thousand casing damaged wells in Daqing Oilfield. In order to activate the potential wells whose fracturing degree is low and remaining oil is relatively enriched, large-scale multi-stage fracturing technology was researched in this paper. Firstly, the relationships of shoulder angle and length of rubber cylinder vs. stress were analyzed by using the finite element analysis software, and the temperature and pressure resistance of rubber cylinder in the case of great deformation was verified by conducting oil immersion experiments. Then, the size of key components was adjusted and optimized by using the independently developed software, and the supporting tools were designed. It is eventually determined that the shoulder angle of rubber cylinder in the pony packer is 50° and its length is 550 mm. In addition, small-diameter sand blower is applicable to the casing damaged wells whose casing ID is larger than 104 mm and its technological coverage rate is increased to 70%; the novel anchor tool can ensure tools to run through the casing damage points while keeping the string stable; and bi-functional blowout preventing packer can realize the isolation of target layer and the blowout prevention of tubing. Field test results show that this technology and its supporting tools can be used for fracturing of casing damaged wells. In one trip of string, 5 layers can be fractured with proppant of 289 m3. Thus, the large-scale fracturing of casing damaged wells is preliminarily realized.

相似文献/References:

[1]赵恩远,夏柏如 赵士强 艾教银.套损井开窗侧钻水平井挖潜剩余油技术[J].石油钻采工艺,2009,31(1):069.
 ZHAO Enyuan,XIA Bairu,et al.Technique of tapping the potential of residual oil in casing damage wells based on side tracking[J].Oil Drilling & Production Technology,2009,31(4):069.
[2]刘合,金岩松.套损井最佳修井时机和修井策略研究[J].石油钻采工艺,2004,26(5):057.[doi:10.3969/j.issn.1000-7393.2004.05.018]
 Liu He,Jin Yansong.STUDY ON BEST WORKOVER TIMING AND WORKOVER PROPOSAL FOR CASING DAMAGED WELL[J].Oil Drilling & Production Technology,2004,26(4):057.[doi:10.3969/j.issn.1000-7393.2004.05.018]
[3]王洪伟.大规模压裂注水开发一体化技术在特低渗透油藏的应用[J].石油钻采工艺,2018,40(1):102.[doi:10.13639/j.odpt.2018.01.016]
 WANG Hongwei.Application of integrated large-scale fracturing and water flooding development technology in extra low permeability oil reservoirs[J].Oil Drilling & Production Technology,2018,40(4):102.[doi:10.13639/j.odpt.2018.01.016]

更新日期/Last Update: 2018-11-20