高温高矿化度高密度水基钻井液用润滑剂  

High Temperature Lubricant for Use in High Density High Salinity Water Base Drilling Fluids

作　　者：单锴 邱正松[1] 钟汉毅[1] 赵欣[1] 周柯任 张民立 张现斌 王磊磊 SHAN Kai;QIU Zhengsong;ZHONG Hanyi;ZHAO Xin;ZHOU Keren;ZHANG Minli;ZHANG Xianbin;WANG Leilei(School of Petroleum Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580;Drilling Fluids Technology Service Company,BHDC,CNPC,Tianjin 300280)

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]中国石油集团渤海钻探泥浆技术服务分公司,天津300280

出　　处：《钻井液与完井液》2020年第4期450-455,共6页Drilling Fluid & Completion Fluid

基　　金：国家重大专项“深井超深井优质钻井液与固井完井技术研究”(2016ZX05020-004);国家自然科学基金项目“裂缝地层致密承压堵漏机理与温敏智能堵漏新方法研究”(51974354);国家自然科学基金青年基金“基于压力控制靶向释放的微胶囊化钻井液润滑剂制备及作用机理”(51704322)。

摘　　要：复杂深层油气钻井工程中,超高温高矿化度高密度(简称“三高”)复杂条件对水基钻井液润滑剂性能提出了更高要求。笔者利用环保性能较好的改性基础油、极压耐磨成膜材料、复合表面活性剂以及复合抗氧化剂等,研制了一种高温高矿化度高密度钻井液润滑剂SDR-1。评价结果表明,润滑剂SDR-1抗温达200℃,在饱和盐水基浆及含6000 mg/L钙的饱和盐水基浆中润滑系数降低率均大于80%,其沉降稳定性好,荧光级别小于3级;与高密度钻井液配伍性良好,可有效降低高密度钻井液的循环流动压耗及动态摩阻。In deep well drilling,ultra-high temperature,high salinity and high density impose rigorous requirements on the performance of drilling lubricants.A lubricant SDR-1,made from an environmentally friendly modified base oil,an extreme pressure filming agent,a compound surfactant and a compound anti-oxidant,has recently been developed for use in high density high salinity drilling fluids at high temperatures.Evaluation of SDR-1 showed that SDR-1 is able to work effectively at 200℃.A saturated salt mud and a saturated salt mud containing 6000 mg/L,when treated with SDR-1,had friction coefficient reduced by 80%.SDR-1 has good sedimentation stability and fluorescence of level 3 or lower.SDR-1 is well compatible with high density drilling fluids,and is able to effectively reduce the flow pressure loss and dynamic friction.

关 键 词：钻井液用润滑剂 高温 高密度 高矿化度 流动压耗 

分 类 号：TE254.4[石油与天然气工程—油气井工程]