| 高温高矿化度高密度水基钻井液用润滑剂 |
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| 引用本文： | 单锴,邱正松,钟汉毅,赵欣,周柯任,张民立,张现斌,王磊磊.高温高矿化度高密度水基钻井液用润滑剂[J].钻井液与完井液,2020,37(4):450-455. |
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| 作者姓名： | 单锴 邱正松 钟汉毅 赵欣 周柯任 张民立 张现斌 王磊磊 |
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| 作者单位： | 1. 中国石油大学(华东)石油工程学院, 山东青岛 266580; |
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| 基金项目： | 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） |
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| 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。
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| 关 键 词： | 钻井液用润滑剂 高温 高密度 高矿化度 流动压耗 |
| 收稿时间： | 2020-02-23 |
High Temperature Lubricant for Use in High Density High Salinity Water Base Drilling Fluids |
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| Affiliation: | 1. School of Petroleum Engineering, China University of Petroleum(East China), Qingdao, Shandong 266580;2. Drilling Fluids Technology Service Company, BHDC, CNPC, Tianjin 300280 |
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| Abstract: | 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. |
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