张志升
ZHANG Zhisheng

• 1:延长油田股份有限公司杏子川采油厂

摘要(Abstract)：

针对鄂尔多斯盆地某致密砂岩油田储层物性差、压裂液返排率低、存在水锁及水敏伤害等问题,以复合黏弹性表面活性剂CNT-3和多功能表面活性剂CZPJ-1为主要处理剂,并添加相关助剂,研制出了一套适用于致密砂岩储层的多功能表面活性剂驱油压裂液体系,室内对压裂液体系的综合性能进行了评价。结果表明:该压裂液体系具有良好的耐温抗剪切性能,在90℃、170 s~(-1)条件下剪切100 min后,黏度仍能保持在50 mPa·s左右;体系还具有良好的携砂性能和破胶性能;破胶液对储层天然岩心的渗透率伤害率为7%左右,具有低伤害特性;另外,破胶液还能通过降低油水界面张力和改变岩石表面润湿性等作用来提高致密砂岩储层的渗吸驱油效果,进一步提高压裂施工改造的效果。A-1井的矿场试验结果表明,其压后的产油量是使用常规胍胶压裂液的邻井A-2井的4倍左右,取得了明显的压裂增产效果。
In view of some problems such as poor physical properties, low fracturing fluid return rate, water locking and water sensitivity damage in the tight sandstone oilfield of Ordos Basin, a set of multifunctional surfactant oil-displacing fracturing fluid system was developed for the tight sandstone reservoirs with the composite viscoelastic Surfactant CNT-3 and multifunctional Surfactant CZPJ-1 as the main processing agent and with the help of the related auxiliaries. The comprehensive performance of the fracturing fluid system was evaluated indoors. The results show that the fracturing fluid system has good temperature resistance and shear resistance. After cutting 100 min at 90 ℃ and 170 s~(-1), the viscosity can still remain around 50 mPa·s;the system also has good sand carrying property and gel breaking property; The damage rate of the gel breaking solution to the natural core's permeability of the reservoir is about 7%, which has pretty lower damage characteristic;in addition, the gel breaking fluid can improve the effects of the imbibition and displacement of the tight sandstone reservoir by reducing the oil-water interfacial tension and changing the wettability of the rock surface, and further improve the effects of the fracturing construction and reconstruction. The field test results of Well A-1 show that the oil production after the fracturing is about 4 times than that of Well A-2-the adjacent well stimulated by the conventional guanidine fracturing fluid, that's to say the effect of the fractured stimulation is pretty obvious.

关键词(KeyWords)： 致密砂岩储层;清洁压裂液;多功能表面活性剂;渗吸驱油;压裂增产
tight sandstone reservoir;clean fracturing fluid;multifunctional surfactant;imbibition oil displacement/flooding;fracturing stimulation

Abstract:

Keywords:

基金项目(Foundation): “十三五”国家科技重大专项“大型油气田及煤层气开发”(2017ZX05013)

作者(Author): 张志升
ZHANG Zhisheng

DOI: 10.19597/j.issn.1000-3754.201901062

参考文献(References)：

• [1]尤源,刘建平,冯胜斌,等.块状致密砂岩的非均质性及对致密油勘探开发的启示[J].大庆石油地质与开发,2015,34(4):168-174.YOU Yuan,LIU Jianping,FENG Shengbin,et al.Heterogeneity of the massive tight sandstones and its inspirations for the exploration and development of the tight oil[J].Petroleum Geology & Oilfield Development in Daqing,2015,34(4):168-174.
• [2]李滢,杨胜来,任双双,等.致密油储层基质块渗流特征[J].断块油气田,2016,23(3):342-345.LI Ying,YANG Shenglai,REN Shuangshuang,et al.Percolation characteristics of matrix block in tight oil reservoir[J].Fault-Block Oil and Gas Field,2016,23(3):342-345.
• [3]孙兵,刘立峰,丁江辉.鄂尔多斯盆地镇北地区延长组长7致密油储层特征及其综合评价[J].大庆石油地质与开发,2017,36(4):147-152.SUN Bing,LIU Lifeng,DING Jianghui.Characteristics and comprehensive evaluation of Chang-7 tight oil reservoirs in Zhenbei Yanchang Formation of Ordos Basin[J].Petroleum Geology & Oilfield Development in Daqing,2017,36(4):147-152.
• [4]MUNASIB A,RICKMAN D S.Regional economic impacts of the shale gas and tight oil boom:A synthetic control analysis[J].Regional Science & Urban Economics,2015,50(4):1-17.
• [5]FLEWELLING S A,TYMCHAK M P,WARPINSKI N.Hydraulic fracture height limits and fault interactions in tight oil and gas formations[J].Geophysical Research Letters,2013,40(14):3602-3606.
• [6]LAURENZI I J,BERGERSON J A,MOTAZEDI K.Life cycle greenhouse gas emissions and fresh water consumption associated with Bakken tight oil[J].Proc Natl Acad Sci USA,2016,113(48):E7672.
• [7]GHANIZADEH A,CLARKSON C R,AQUINO S,et al.Petrophysical and geomechanical characteristics of Canadian tight oil and liquid-rich gas reservoirs:I.Pore network and permeability characterization[J].Fuel,2015,153(1):664-681.
• [8]冷振鹏,杨胜建,吕伟峰,等.致密油孔隙结构表征方法:以川中致密油储层岩心为例[J].断块油气田,2016,23(2):161-165.LENG Zhenpeng,YANG Shengjian,Lü Weifeng,et al.Pore structure characterization for tight oil reservoirs:Taking Chuanzhong tight oil reservoir cores as examples[J].Fault-Block Oil and Gas Field,2016,23(2):161-165.
• [9]王明磊,张遂安,关辉,等.致密油储层特点与压裂液伤害的关系:以鄂尔多斯盆地三叠系延长组长7段为例[J].石油与天然气地质,2015,36(5):848-854.WANG Minglei,ZHANG Suian,GUAN Hui,et al.Relationship between characteristics of tight oil reservoirs and fracturing fluid damage:A case from Chang 7 Member of the Triassic Yanchang Fm in Ordos Basin[J].Oil & Gas Geology,2015,36(5):848-854.
• [10]孙川,刘友权,熊颖,等.川中沙溪庙致密油藏压裂液技术研究及应用[J].石油与天然气化工,2014,43(4):409-412.SUN Chuan,LIU Youquan,XIONG Ying,et al.Research and application of tight oil reservoir fracturing fluid in Shaxi Temple layer of Central Sichuan[J].Chemical Engineering of Oil and Gas,2014,43(4):409-412.
• [11]安杰,刘涛,范华波,等.鄂尔多斯盆地致密油滑溜水压裂液的研究与应用[J].断块油气田,2016,23(4):541-544.AN Jie,LIU Tao,FAN Huabo,et al.Research and application of slippery water fracturing fluid for tight oil in Ordos Basin[J].Fault-Block Oil and Gas Field,2016,23(4):541-544.
• [12]郭钢,薛小佳,吴江,等.新型致密油藏可回收滑溜水压裂液的研发与应用[J].西安石油大学学报(自然科学版),2017,32(2):98-104.GUO Gang,XUE Xiaojia,WU Jiang,et al.Research and application of a recoverable slickwater fracturing fluid for tight oil reservoirs[J].Journal of Xi'an Shiyou University(Natural Science) ,2017,32(2):98-104.
• [13]司志梅,李爱芬,郭海萱,等.致密油藏压裂液滤液返排率影响因素室内实验[J].油气地质与采收率,2017,24(1):122-126.SI Zhimei,LI Aifen,GUO Haixuan,et al.Experimental study on the influencing factors of fracturing fluid flowback rate in tight reservoir[J].Petroleum Geology and Recovery Efficiency,2017,24(1):122-126.
• [14]付文耀,冯松林,韦文,等.清洁压裂液返排液驱油体系性能评价及矿场应用[J].大庆石油地质与开发,2018,37(3):114-119.FU Wenyao,FENG Songlin,WEI Wen,et al.Performance evaluation and field application of the flowback-fluid oil displacing system of clean fracturing fluid[J].Petroleum Geology & Oilfield Development in Daqing,2018,37(3):114-119.
• [15]毛金成,杨小江,宋志峰,等.耐高温清洁压裂液体系HT-160的研制及性能评价[J].石油钻探技术,2017,45(6):105-109.MAO Jincheng,YANG Xiaojiang,SONG Zhifeng,et al.Development and performance evaluation of high temperature resistant clean fracturing fluid system HT-160[J].Petroleum Drilling Techniques,2017,45(6):105-109.
• [16]赵海洋,张士诚.高温清洁压裂液在塔河油田的应用[J].大庆石油地质与开发,2014,33(6):80-85.ZHAO Haiyang,ZHANG Shicheng.Application of high temperature clean fracturing fluid in Tahe Oilfield[J].Petroleum Geology & Oilfield Development in Daqing,2014,33(6):80-85.
• [17]邓红琳,陶鹏.低温压裂液在鄂南地区中浅储层中的应用[J].特种油气藏,2016,23(1):142-145.DENG Honglin,TAO Peng.Application of low temperature fracturing fluid in middle and shallow reservoirs in southern parts of Hubei Province[J].Special Oil & Gas Reservoirs,2016,23(1):142-145.
• [18]郭钢,薛小佳,李楷,等.压裂液存留液对致密油储层渗吸替油效果的影响[J].钻井液与完井液,2016,33(6):121-126.GUO Gang,XUE Xiaojia,LI Kai,et al.Effect of retained fracturing fluid on the imbibition oil displacement efficiency of tight oil reservoir[J].Drilling Fluid & Completion Fluid,2016,33(6):121-126.
• [19]刘晨,王凯,耿艳宏,等.清洁压裂液破胶液驱油体系实验研究[J].断块油气田,2017,24(1):96-100.LIU Chen,WANG Kai,GENG Yanhong,et al.Laboratory study on surfactant flooding system based on clean fracturing gel-breaking fluid[J].Fault-Block Oil and Gas Field,2017,24(1):96-100.
• [20]吴新民,陈亚楠.一种高性能清洁压裂液返排液驱油的可行性实验研究[J].科学技术与工程,2017,17(32):245-250.WU Xinmin,CHEN Yanan.Feasibility experimental investigation on the flowback liquid of a clear fracturing fluid with high performance for displacement of reservoir oil[J].Science Technology and Engineering,2017,17(32):245-250.
• [21]周文胜,王凯,刘晨,等.清洁压裂液返排液再利用驱油体系研究[J].岩性油气藏,2017,29(2):160-166.ZHOU Wensheng,WANG Kai,LIU Chen,et al.Laboratory study on surfactant flooding system based on clean fracturing flowback fluid[J].Lithologic Reservoirs,2017,29(2):160-166.