环保水基钻井液体系研究及综合效能评价  

Research and Comprehensive Performance Evaluation of Environmentally Friendly Water-based Drilling Fluid System

作　　者：王皓[1] 尹飞 李泽群 白超琨 刘凤双 曹鲁刚 付宪军 WANG Hao;YIN Fei;LI Ze-qun;BAI Chao-kun;LIU Feng-shuang;CAO Lu-gang;FU Xian-jun(China Geological Survey Langfang Natural Resources Comprehensive Survey Center,Langfang 065000,China)

机构地区：[1]中国地质调查局廊坊自然资源综合调查中心,廊坊065000

出　　处：《科学技术与工程》2024年第36期15375-15383,共9页Science Technology and Engineering

基　　金：中国地质调查局项目(DD20240012,DD20242959,DD20230399)。

摘　　要：针对钻探工程带来的环境污染问题,以研发一套环保水基钻井液体系为目标出发,选择瓜儿豆胶(GHV-90)、预糊化淀粉(GK-K325)、改性蓖麻油(PCMAS5)作为处理剂,通过正交实验确定环保水基钻井液最佳配比:1%钠基膨润土(Na-B)+0.6%GHV-90+1.5%GK-K325+1%PCMAS5,将该环保钻井液与特殊地层钻井液进行对比,开展线性膨胀试验、滚动回收试验、岩芯渗透压缩试验、抗污染实验和生物毒性测试,最后引入专家意见建立模糊评价模型。结果表明:定量化界定该环保水基钻井液综合性能属于良好级次。In response to the environmental pollution caused by drilling engineering,to develop an environment-friendly water-based drilling fluid system.Guar gum(GHV-90),pregelatinized starch(GK-K325),and modified castor oil(PCMAS5)were selected as additives.Adopting orthogonal experimental design method,the optimal formulation of the drilling fluid was:1%sodium based bentonite(Na-B)+0.6%GHV-90+1.5%GK-K325+1%PCMAS5.A comparison was made between this environment-friendly drilling fluid and special formation drilling fluids,conducting linear expansion tests,rolling recovery tests,core permeability compression tests,anti-pollution experiments,and biotoxicity tests.Finally,expert opinions were introduced to establish a fuzzy evaluation model.The results show that the comprehensive performance of the environment-friendly water-based drilling fluid is quantitatively rated as good.

关 键 词：环保钻井液 钻井液综合性能 正交实验设计 模糊评价法 

分 类 号：P634.6[天文地球—地质矿产勘探]