化学自生热压裂液技术研究进展  

Research Progress of Fracturing Fluid with Chemical In-situ Heat Generation

作　　者：雷明[1,2] 罗明良 战永平 马宇奔[1,2] 张冕 史博晶[1,2] 韩云龙 LEI Ming;LUO Mingliang;ZHAN Yongping;MAYuben;ZHANG Mian;SHI Bojing;HAN Yunlong(Key Laboratory of Unconventional Oil&Gas Development(China University of Petroleum(East China)),Ministry of Education,Qingdao,Shandong 266580,P R of China;School of Petroleum Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580,P R of China)

机构地区：[1]非常规油气开发教育部重点实验室(中国石油大学(华东)),山东青岛266580 [2]中国石油大学(华东)石油工程学院,山东青岛266580

出　　处：《油田化学》2022年第1期170-178,185,共10页Oilfield Chemistry

基　　金：国家自然科学基金“致密油储层低摩阻纳米磁流体压裂液构筑及渗吸驱油机制”(项目编号51874334);山东省自然科学基金“致密油储层纳米磁流体压裂渗吸增油控水机理研究”(项目编号ZR2018MEE010);“中亚和中东地区复杂碳酸盐岩油气藏采油采气关键技术研究与应用”(项目编号2017ZX005030005)。

摘　　要：化学自生热压裂液在低pH值或高温下发生热化学反应生成对地层低伤害的盐溶液和气体,并放出大量的热量,具有生热量大、返排快、储层伤害小等特点,能够有效克服压裂液对地层冷伤害和低温破胶不完全等问题。介绍了氯化铵与亚硝酸钠的生热机理,分析了pH值、反应物浓度、初始温度对压裂液生热量和生热反应速度的影响;根据不同交联剂类型将化学自生热压裂液分为了硼交联胍胶压裂液、酸性交联压裂液和黏弹性表面活性剂压裂液,总结了不同压裂液体系的性能和优缺点,介绍了压裂施工工艺和现场应用,并从压裂液配方和工艺方面对化学自生热压裂液研究进行了展望。The thermochemical reaction of the chemical in-situ heat generation fracturing fluid(CISHGF)occurs at a low pH or high temperature to produce a salt solution and gas with low damage to the formation,and release a lot of heat.The CISHGF exhibits large heat generation,fast flowback and low reservoir damage,etc.,and effectively solve the problems including fracturing fluid cooling damage to the formation and incomplete gel breaking at the lower temperature.The heat generation mechanisms of ammonium chloride and sodium nitrite were introduced,and the effects of pH,reactant concentration and initial temperature on the heat generation and heat generation reaction rate of fracturing fluid were analyzed;According to different crosslinking agents,the CISHGF were divided into boron cross-linked guanidine gum fracturing fluid,acidic cross-linking fracturing fluid and viscoelastic surfactant fracturing fluid,and the performance,advantages and disadvantages of different fracturing fluid systems were summarized,The fracturing process and field applications were introduced.In view of the problems existing in the current system,the prospect of CISHGF the fracturing fluid formulation and process was expected.

关 键 词：化学自生热 压裂液 反应机理 反应控制 综述 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]