建南致密砂岩气藏压裂液伤害主控因素

付美龙; 胡泽文; 黄倩; 唐芳

doi:10.3969/j.issn.1001-5620.2016.06.021

建南致密砂岩气藏压裂液伤害主控因素

doi: 10.3969/j.issn.1001-5620.2016.06.021

1. 长江大学石油工程学院, 武汉 434100;
2. 中国石化江汉油田分公司石油工程技术研究院, 武汉 434100

基金项目:

国家863计划项目“致密砂岩气藏高效钻井与压裂改造关键技术”之子课题二“致密气藏压裂改造技术研究（2013AA064802）

详细信息

作者简介:
付美龙,1967年生,教授、博导,从事油田化学和提高采收率方面的教学及科研工作。E-mail:805817751@qq.com。

中图分类号: TE357
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出版历程
- 收稿日期: 2016-07-25
- 刊出日期: 2016-11-30

Key FactorsAffecting Damage by Fracturing Fluidsto Jiannan Tight Sandstone Gas Reservoir

1. School of Petroleum Engineering, Yangtze University, Wuhan, Hubei 430100;
2. Research Center of Petroleum Engineering, Southwest Petroleum Engineering Co., Ltd., Sinopec, Wuhan, Hubei 430035

摘要

摘要: 实验测定了建南致密砂岩油气藏羧甲基羟丙基瓜胶压裂液、低聚物压裂液和羟丙基瓜胶压裂液3种压裂液破胶后的黏度、表面张力及残渣含量，发现3种压裂液破胶后的性能参数存在一定的差异。通过测试不同压裂液体系对岩心的总伤害率和基质伤害率并计算出了水锁伤害率，发现岩心的水锁伤害率（65%~80%）远大于基质伤害率（5%~15%），水锁伤害才是降低储层渗透率的主要伤害来源；且岩心基质伤害率和水锁伤害率不仅与压裂液的性能参数有一定的关系，还与岩心渗透率和岩性存在一定的关系。通过分解实验法逐步分析测定了这些因素对压裂液伤害的影响后得出，压裂液的残渣含量是影响基质伤害的主控因素；岩心渗透率是影响水锁伤害的主控因素。通过解水锁实验发现，严重水锁的岩心通过相应的解水锁措施后，岩心渗透率恢复值高达70以上，说明通过相应措施确实能减小水锁伤害。
- 天然气 /
- 致密砂岩气 /
- 压裂 /
- 压裂液 /
- 储层伤害 /
- 水锁伤害
Abstract: Carboxymethyl hydroxypropyl guar gum fracturing fluid, an oligomer fracturing fluid and hydroxypropyl guar gum fracturing fluid are used in fracturing the tight sandstone gas reservoirs in Jian'nan block. In recent laboratory experiments, the viscosity, surface tension and residue of the three fracturing fluids after gel-breaking were measured. It was found that there were some differences in the properties of these three fracturing fluids after gel breaking. The measurement of core damage has shown that the ratio of cores' water block damage (65%-80%) was far greater than the ratio of cores' matrix damage (5%-15%), indicating that water block damage was the main damage to reservoir permeability. The ratio of matrix damage and the ratio of water block damage are not only related to the properties of fracturing fluid, they are also related to core permeability and lithology. Through decomposition experiment, it was understood that the amount of residue of fracturing fluid was the key factor affecting matrix damage, and the core permeability was the key factor affecting water block damage. Experiment on water block removal has shown that cores with severe water block damage can have permeability increases by more than 70% after removing waterblock, indicating that the measures of removing water block did work.
- Natural gas /
- Tight sandstone natural gas /
- Fracturing /
- Fracturing fluid /
- Reservoir damage /
- Water block damage

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参考文献(13)

[1]	陈馥, 李钦. 压裂液伤害性研究[J]. 天然气工业, 2006, 26(1):109-111. CHEN Fu, LI Qin. A study of formation damage of fracturing fluid[J]. Natural Gas Industry, 2006, 26(1):109-111.
[2]	GALL B L, SATTLER A R, MALONEY D R, et al. Permeability damage to natural fractures caused by fracturing fluid polymers[C]//SPE rocky mountain regional meeting. Society of Petroleum Engineers, 1988.
[3]	杨永利. 低渗透油藏水锁伤害机理及解水锁实验研究[J]. 西南石油大学学报(自然科学版), 2013, 35(3):137-141. YANG Yongli. Study of water locking damage and mechanism and water unlocking permeability reservoir[J]. Journal of Southwest Petroleum University:Science and Technology Edition, 2013, 35(3):137-141.
[4]	TINER R L, STAHL JR E J, MALONE W T. Developments in fluids to reduce potential damage from fracturing treatments[C]//SPE Symposium on Formation Damage Control. Society of Petroleum Engineers, 1974.
[5]	丁绍卿, 郭和坤. 应用核磁共振技术研究压裂液伤害机理[J]. 钻井液与完井液, 2006, 23(3):60-62. DING Shaoqing, GUO Hekun. Research on the damage mechanism of fracturing fluids through nuclear magnetic resonance technology[J]. Drilling Fluid & Completion Fluid, 2006, 23(3):60-62.
[6]	徐兵威, 李雷, 何青, 等. 致密砂岩储层压裂液损害机理探讨[J]. 断块油气田, 2013, 20(5):639-643. XU Bingwei, LI Lei, HE Qing, et al. Discussion on damage mechanism of fracturing fluid in tight sandstone reservoir[J].Fault-block Oil and Gas Field, 2013,20(5):639-643.
[7]	庄照峰, 张士诚, 李宗田, 等. 压裂液伤害程度表示方法探讨[J]. 油气地质与采收率, 2010, 17(5):108-110. ZHUANG Zhaofeng, ZHANG Shicheng, LI Zongtian, et al. Discussion on the index of fracturing fluid damage[J]. Petroleum Geology And Recovery Efficiency, 2010, 17(5):108-110.
[8]	WEAVER J D, SCHULTHEISS N C, LIANG F. Fracturing fluid conductivity damage and recovery efficiency[C]//SPE european formation damage conference & exhibition. Society of Petroleum Engineers, 2013.
[9]	管保山, 周焕顺, 程玉梅, 等. 鄂尔多斯盆地西峰油田压裂液对储层伤害的微观机理研究[J]. 中国石油勘探, 2007,(4):59-62. GUAN Baoshan, ZHOU Huanshun, CHENG Yumei, et al. Microcosmic analysis of damage of fracturing fluids to reservoirs in Xifeng oilfield of Ordos basin[J].China Petroleum Exploration, 2007 ,(4):59-62.
[10]	F E D O R O V A, C A R R A S Q U I L L A J, C O X A. Avoiding damage associated to produced water use in hydraulic fracturing[C]//SPE International Symposium and Exhibition on Formation Damage Control. Society of Petroleum Engineers, 2014.
[11]	李志刚, 乌效鸣, 李子丰, 等. 低压低渗气藏低伤害压裂液研究与应用[J]. 钻井液与完井液, 2005, 22(3):34-37. LI Zhigang, WU Xiaoming, LI Zifeng, et al. Premium n₂ energized aqueous fracturing fluid of low-pressure and tight gas reservoir[J]. Drilling Fluid & Completion Fluid, 2005, 22(3):34-37.
[12]	黄禹忠, 任山, 林永茂, 等. 川西低渗致密气藏低伤害压裂技术研究及应用[J]. 钻采工艺, 2009, 32(1):33-35. HUANG Yuzhong, REN shan, LIN Yongmao, et al. Research and application of low damage frac technology for low permeability and tight gas field in western Sichuan[J]. Drilling and Production Technology, 2009, 32(1):33-35.
[13]	GUPTA D V. Unconventional fracturing fluids for tight gas reservoirs[C]//SPE Hydraulic Fracturing Technology Conference. Society of Petroleum Engineers, 2009.