摘要
为满足充分利用高矿化度的产出水或海水进行压裂作业,以耐盐、耐高温水基压裂液为研究对象,用我国某区块产出的高盐地层水为基液(总矿化度为30000 mg/L)研制出新型稠化剂、新型交联剂,并对单剂进行优化,最终提出了一套耐盐、耐高温的水基压裂液配方,再对该压裂液体系进行综合性能评价。结果表明:在170℃、剪切速率170 s^(-1)下剪切2 h后黏度仍能保持在80 mPa·s以上,残渣含量小于400 mg/L,储层伤害低于18.6%,均满足SY/T 6376-2008《压裂液通用技术条件》评价标准。该压裂液体系可利用高盐地层水或海水直接配制压裂液,可以为海上油气资源的有效开发提供保障,节约成本,为陆上油气田开发解决产出水处理问题,节约淡水资源,保护环境。
In order to save freshwater resources and reduce the cost of oilfield development,protect the environment,and make full use of the produced water of oilfield production for production operations,it is the trend of oil and gas field development.In order to make full use of high salinity produced water or seawater for fracturing operation,this paper takes salt-resistant and high temperature-resistant water-based fracturing fluid as the research object,uses high salinity formation water produced in a block of our country as the base fluid(total salinity is 30000 mg/L),develops a new thickener and crosslinking agent,optimizes the single agent,and finally puts forward a set of salt-resistant and high temperature-resistant water-based fracturing fluid.Then the comprehensive performance evaluation of the fracturing fluid system is carried out.The results show that after shearing at 170℃and 170 s^(-1) for 2 h,the viscosity can still remain above 80 mPa·s,the residual content is less than 400 mg/L,and the reservoir damage is less than 18.6%.All of these meet the SY/T 6376-2008"General Technical Conditions for Fracturing Fluids"evaluation criteria.The fracturing fluid system can directly prepare fracturing fluid by using high salinity formation water or seawater.It can provide guarantee for the effective development of offshore oil and gas resources,save cost,solve the problem of producing water treatment for onshore oil and gas field development,save freshwater resources and protect the environment.
作者
易辉永
王世彬
赵占江
安琦
YI Hui-yong;WANG Shi-bin;ZHAO Zhan-jiang;AN Qi(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation in Southwest Petroleum University,Chengdu 610500,China;CNOOC Energy Development Engineering Technology Company,Tianjin 300450,China)
出处
《应用化工》
CAS
CSCD
北大核心
2020年第S02期69-74,共6页
Applied Chemical Industry
基金
科技部油气重大专项(2016ZX05048)。
关键词
耐盐
耐高温
压裂液
新型稠化剂
新型交联剂
salt resistance
high temperature resistance
fracturing fluid
new thickener
new crosslinking agent
