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Coal Geology & Exploration

Abstract

To solve the problems of poor application flexibility and non-adjustable performance of the current fracturing fluid system in unconventional natural gas of coal measures, an integrated fracturing fluid system is researched. In this study, the experimental evaluation was performed for the viscosity increase, drag reduction, sand suspension, temperature and shear resistance, gel breaking, additive compatibility, anti-swelling and surface tension of the integrated fracturing fluid system based on three kinds of integrated thickeners in combination with the field clay stabilizer, cleanup additive and gel breaker. Meanwhile, the field application effect of integrated fracturing fluid was analyzed. The results show that: the viscosity of the integrated fracturing fluid system is flexible and adjustable, which increases with the increasing of the volume fraction of the integrated thickener. Specifically, the viscosity can be adjusted within the range of 3-200 mPa·s. The high-viscosity liquid has excellent sand suspension performance, and the viscosity of 1.0% volume fraction integrated fracturing fluid is higher than 100 mPa·s at the temperature of 60℃ and the shear rate of 100 S−1. Besides, the integrated fracturing fluid system has good compatibility with various additives, with easy gel breaking, a drag reduction rate>70%, an anti-swelling rate>70% and a surface tension<28 mN/m. Definitely, the integration is mainly realized in the function and application. In terms of function, the slick water, linear glue and cross-linked hydraulic fracturing fluid system are integrated, which can meet the different requirements of various fracturing stimulation technologies of gas reservoir for fracturing, drag reduction, anti-swelling, sand carrying and rapid flowback. As for application, the integrated fracturing fluid system has been successfully applied in the coalbed methane, shale gas and tight sandstone gas wells in the east edge of Ordos Basin. In general, the integrated fracturing fluid promotes the test on unconventional gas fracturing technologies, improves the effect of fracturing stimulation, and shows good adaptability to various gas reservoirs and fracturing stimulation technologies.

Keywords

fracturing fluid, integration, unconventional natural gas, coal measures gas, the east edge of Ordos Basin

DOI

10.12363/issn.1001-1986.21.12.0772

Reference

[1] 梁冰,石迎爽,孙维吉,等. 中国煤系“三气”成藏特征及共采可能性[J]. 煤炭学报,2016,41(1):167−173

LIANG Bing,SHI Yingshuang,SUN Weiji,et al. Reservoir forming characteristics of “the three gases” in coal measure and the possibility of commingling in China[J]. Journal of China Coal Society,2016,41(1):167−173

[2] 王佟,王庆伟,傅雪海. 煤系非常规天然气的系统研究及其意义[J]. 煤田地质与勘探,2014,42(1):24−27

WANG Tong,WANG Qingwei,FU Xuehai. The significance and the systematic research of the unconventional gas in coal measures[J]. Coal Geology & Exploration,2014,42(1):24−27

[3] 刘池洋,王建强,张东东,等. 鄂尔多斯盆地油气资源丰富的成因与赋存–成藏特点[J]. 石油与天然气地质,2021,42(5):1011−1029

LIU Chiyang,WANG Jianqiang,ZHANG Dongdong,et al. Genesis of rich hydrocarbon resources and their occurrence and accumulation characteristics in the Ordos Basin[J]. Oil & Gas Geology,2021,42(5):1011−1029

[4] 徐凤银,闫霞,林振盘,等. 我国煤层气高效开发关键技术研究进展与发展方向[J]. 煤田地质与勘探,10/25/2022,50(3):1−14

XU Fengyin,YAN Xia,LIN Zhenpan,et al. Research progress and development direction of key technologies for efficient coalbed methane development in China[J]. Coal Geology & Exploration,10/25/2022,50(3):1−14

[5] 陈海汇,范洪富,郭建平,等. 煤层气井水力压裂液分析与展望[J]. 煤田地质与勘探,2017,45(5):33−40

CHEN Haihui,FAN Hongfu,GUO Jianping,et al. Analysis and prospect on hydraulic fracturing fluid used in coalbed methane well[J]. Coal Geology & Exploration,2017,45(5):33−40

[6] 宋金星,陈培红,王乾. 煤储层水基压裂液用表面活性剂的筛选实验[J]. 煤田地质与勘探,2017,45(6):79−83

SONG Jinxing,CHEN Peihong,WANG Qian. Laboratory study on screening and optimizing surfactant of water-based fracturing fluid for coalbed methane reservoir[J]. Coal Geology & Exploration,2017,45(6):79−83

[7] 杨琦,张红杰,王春鹏,等. 煤系地层致密砂岩压裂技术可行性研究[J]. 当代化工,2021,50(9):2176−2181

YANG Qi,ZHANG Hongjie,WANG Chunpeng,et al. Feasibility study on fracturing technology of tight sandstone in coal measures strata[J]. Contemporary Chemical Industry,2021,50(9):2176−2181

[8] 陈作,李双明,陈赞,等. 深层页岩气水力裂缝起裂与扩展试验及压裂优化设计[J]. 石油钻探技术,2020,48(3):70−76

CHEN Zuo,LI Shuangming,CHEN Zan,et al. Hydraulic fracture initiation and extending tests in deep shale gas formations and fracturing design optimization[J]. Petroleum Drilling Techniques,2020,48(3):70−76

[9] 林应之,林启才,邓世杨,等. 深层砂岩裂缝性气藏缝网压裂裂缝导流能力分析[J]. 油气井测试,2021,30(5):9−17

LIN Yingzhi,LIN Qicai,DENG Shiyang,et al. Analysis on fracture conductivity of fracture network fracturing in deep sandstone fractured gas reservoir[J]. Well Testing,2021,30(5):9−17

[10] 赵金洲,任岚,蒋廷学,等. 中国页岩气压裂十年:回顾与展望[J]. 天然气工业,2021,41(8):121−142

ZHAO Jinzhou,REN Lan,JIANG Tingxue,et al. Ten years of gas shale fracturing in China:Review and prospect[J]. Natural Gas Industry,2021,41(8):121−142

[11] 赵振峰,李楷,赵鹏云,等. 鄂尔多斯盆地页岩油体积压裂技术实践与发展建议[J]. 石油钻探技术,2021,49(4):85−91

ZHAO Zhenfeng,LI Kai,ZHAO Pengyun,et al. Practice and development suggestions for volumetric fracturing technology for shale oil in the Ordos Basin[J]. Petroleum Drilling Techniques,2021,49(4):85−91

[12] 周仲建,于世虎,张晓虎. 页岩气用复合增效压裂液的研究与应用[J]. 钻采工艺,2019,42(4):89−92

ZHOU Zhongjian,YU Shihu,ZHANG Xiaohu. R & D of composite synergistic fracturing fluid for shale gas and application[J]. Drilling & Production Technology,2019,42(4):89−92

[13] 贾金亚,魏娟明,贾文峰,等. 页岩气压裂用滑溜水胶液一体化稠化剂研究[J]. 应用化工,2019,48(6):1247−1250

JIA Jinya,WEI Juanming,JIA Wenfeng,et al. Study of thickener used in shale gas fracturing for slide water and gel–liquid integration[J]. Applied Chemical Industry,2019,48(6):1247−1250

[14] 刘宽,侯冬冬,杨哲,等. 缔合型复合压裂液的研制与应用[J]. 油田化学,2019,36(3):381−387

LIU Kuan,HOU Dongdong,YANG Zhe,et al. Research and application of an associative compound fracturing fluid[J]. Oilfield Chemistry,2019,36(3):381−387

[15] 孟磊,王力力,刘晓瑞,等. 疏水缔合聚丙烯酰胺作为滑溜水压裂液减阻剂的应用性能研究[J]. 应用化工,2019,48(4):789−793

MENG Lei,WANG Lili,LIU Xiaorui,et al. Application performance of hydrophobically associating polyacrylamide as drag reducer for sliding water fracturing fluid[J]. Applied Chemical Industry,2019,48(4):789−793

[16] 孙亚东,李嘉,于世虎. 一剂多能乳液聚合物压裂液的制备与应用[J]. 石油化工,2021,50(4):325−331

SUN Yadong,LI Jia,YU Shihu. Preparation and application of a multifunctional emulsion polymer as fracturing fluid[J]. Petrochemical Technology,2021,50(4):325−331

[17] 赵玉东. 低伤害高效清洁滑溜水压裂液体系研制与应用[J]. 大庆石油地质与开发,2020,39(5):65−71

ZHAO Yudong. Research and application of the clean slickwater fracturing fluid system with low damage and high efficiency[J]. Petroleum Geology & Oilfield Development in Daqing,2020,39(5):65−71

[18] 何大鹏,刘通义,郭庆,等. 可在线施工的反相微乳液聚合物压裂液[J]. 钻井液与完井液,2018,35(5):103−108

HE Dapeng,LIU Tongyi,GUO Qing,et al. An online operable fracturing fluid treated with reverse microemulsion polymer[J]. Drilling Fluid & Completion Fluid,2018,35(5):103−108

[19] 张晓虎,于世虎,周仲建,等. 页岩气井用乳液型超分子压裂液制备与应用[J]. 钻井液与完井液,2019,36(1):120−125

ZHANG Xiaohu,YU Shihu,ZHOU Zhongjian,et al. Preparation and application of an emulsion supramolecular fracturing fluid for shale gas development[J]. Drilling Fluid & Completion Fluid,2019,36(1):120−125

[20] WANG Wei,ZHANG Yinyu,LIU Wenguang. Bioinspired fabrication of high strength hydrogels from non–covalent interactions[J]. Progress in Polymer Science,2017,71(4):1−25.

[21] HOYT J W. Drag–reduction effectiveness of polymer solutions in the turbulent–flow rheometer:A catalog[J]. Journal of Polymer Science Part B Polymer Letters,1971,9(11):851−862.

[22] 刘倩,管保山,刘玉婷,等. 滑溜水压裂液用降阻剂的研究与应用进展[J]. 油田化学,2020,37(3):545−551

LIU Qian,GUAN Baoshan,LIU Yuting,et al. Progress of development and application of drag reduction agents for slick–water fracturing[J]. Oilfield Chemistry,2020,37(3):545−551

[23] 司晓冬,罗明良,李明忠,等. 压裂用减阻剂及其减阻机理研究进展[J]. 油田化学,2021,38(4):732−739

SI Xiaodong,LUO Mingliang,LI Mingzhong,et al. Research progress of drag reducers for fracturing and its drag reduction mechanism[J]. Oilfield Chemistry,2021,38(4):732−739

[24] 林凌,罗平亚. 分子结构对水解AM/DMDAAC聚合物流变性能影响[J]. 精细化工,2017,34(6):708−715

LIN Ling,LUO Pingya. Effect of molecular structure on rheology of hydrolyzed poly(AM/DMDAAC)[J]. Fine Chemicals,2017,34(6):708−715

[25] 李远照,李婷,王犁,等. 基于刺激响应策略的可控滑溜水研究[J]. 钻井液与完井液,2020,37(6):784−788

LI Yuanzhao,LI Ting,WANG Li,et al. Study on controlable slippery water based on stimulus response strategy[J]. Drilling Fluid & Completion Fluid,2020,37(6):784−788

[26] 路遥,康万利,吴海荣,等. 丙烯酰胺基聚合物压裂液研究进展[J]. 高分子材料科学与工程,2018,34(12):156−162

LU Yao,KANG Wanli,WU Hairong,et al. Comprehensive review of Acrylamide–based polymer fracturing fluid[J]. Polymer Materials Science and Engineering,2018,34(12):156−162

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