抗高温高密度生物质钻井液体系研究及应用  

Research and Application of a High-Temperature Resistant and High-Density Biomass Drilling Fluid System

作　　者：周启成 梁应红 单海霞 黄桃 国安平 王俊祥 ZHOU Qicheng;LIANG Yinghong;SHAN Haixia;HUANG Tao;GUO Anping;WANG Junxiang(Drilling and Completion Fluid Technology Center of Sinopec Oilfield Service Corporation,Puyang,Henan,457001,China;Drilling Engineering and Technology Research Institute,Sinopec Zhongyuan Oilfield Service Corporation,Puyang,Henan,457001,China;Southwest Drilling Company,Sinopec Zhongyuan Oilfield Service Corporation,Chengdu,Sichuan,611230,China)

机构地区：[1]中石化石油工程钻完井液技术中心,河南濮阳457001 [2]中石化中原石油工程有限公司钻井工程技术研究院,河南濮阳457001 [3]中石化中原石油工程有限公司西南钻井分公司,四川成都611230

出　　处：《石油钻探技术》2022年第6期78-84,共7页Petroleum Drilling Techniques

基　　金：中国石化集团公司科技攻关项目“抗温抗盐生物质合成树脂降滤失剂研制”(编号:JP18038-1);中石化石油工程公司科技攻关项目“水基钻井液用生物质合成树脂降滤失剂研制”(编号:SG19-82K)资助。

摘　　要：为了提高抗高温高密度钻井液体系的高温稳定性及环保性能,以自主研发的生物质合成树脂降滤失剂、抑制剂和润滑剂为核心处理剂,对处理剂加量进行优化,构建了抗高温高密度生物质钻井液体系。性能评价结果表明:该体系抗温可达200℃,抗1.0%CaCl_(2)污染,岩屑滚动回收率达94.3%,润滑系数≤0.128,生物毒性EC50为89230 mg/L。现场应用表明,抗高温高密度生物质钻井液具有较好的抗污染能力,在密度达2.55 kg/L、井底温度达140℃的情况下其仍具有很好的流变稳定性能。抗高温高密度生物质钻井液促进了生物质资源在钻井液领域的利用,解决了高密度水基钻井液抗温性与环保性相矛盾的问题,具有较好的现场推广应用价值。In order to improve the temperature stability and environmental protection performance of a hightemperature resistant and high-density drilling fluid system,the self-developed filtrate reducers,inhibitors,and lubricants with biomass synthetic resin were taken as the core treatment agents,the dosages of the treatment agents were optimized,and a high-temperature resistant and high-density biomass drilling fluid system was constructed.The performance evaluation results showed that the system could resist temperature up to 200℃.It also could resist CaCl_(2) pollution of 1%.The rock cuttings rolling recovery was 94.3%,with the lubrication coefficient≤0.128.The biological toxicity EC50 value was 89230 mg/L.The field application showed that the high-temperature resistant and high-density biomass drilling fluids could significantly resist pollution.They had excellent rheological stability when the density was up to 2.55 kg/L and the bottom hole temperature was 140℃.The high-temperature resistant and high-density biomass drilling fluids can promote the utilization of biomass resources in the drilling fluid field and solve the trade-off between the temperature resistance and environmental protection of high-density water-based drilling fluids.Therefore,the drilling fluids have positive field promotion and application value.

关 键 词：钻井液 生物质 高密度 环保性 稳定性 抗温性 

分 类 号：TE254[石油与天然气工程—油气井工程]