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油基钻井液目前在国内使用率较低,如果利用其可保持地层原有特性,使油气层得到最完美保护等优点,对长段可溶盐地层,强水敏性地层能起到好的效果。文中以水平—4井使用油基钻井液为基准,分析了在孤东、王庄油田和塔里木水平井应用的情况,提出了在具体应用中要多做试验,从试验中找出变化趋势,确定正确施工方案。
Currently, oil-based drilling fluids are used at a low rate in China. If they are used to maintain the original characteristics of the strata and the oil and gas reservoirs are most perfectly protected, the oil-based drilling fluid can play a good role in long-salt soluble salt strata and strong water-sensitive strata. Based on the application of oil-based drilling fluid in horizontal well-4, the application of horizontal well in Gudong, Wangzhuang Oilfield and Tarim Basin is analyzed. It is suggested that more tests should be done in practical application and the trend should be found out from the test. Determine the correct construction program.