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石油、天然气钻井泥浆防漏、堵漏问题几十年来一直为东、西方国家钻井界视为十分棘手的问题,都以很大的科研投入主攻这个课题,见到了明显的效果。如苏联的勘探井、油气钻井中井漏时间占总钻井时间的4～lO％。从乌拉尔到伏尔加、中亚细亚,处理井漏所耗的费用和时间占处理井下复杂情况的70％以上。鞑靼联合企业,每年处理堵漏占钻井时间的10～13％,1980年花费6.62万小时封堵2411个漏层,其中对224个强烈漏层就用去3.15万小时。在第十个五年计划期内,钻井遇到了l142万个漏层,用去31万个小时,随着苏联对堵漏技术的突破;堵漏时间和花费都大幅度下降。
Oil and gas drilling mud leak-proof and plugging problems have been regarded as a very difficult issue for the drilling industry in the East and West countries for decades. Both of them have invested heavily in scientific research to tackle this issue and have noticed obvious results. For example, the Soviet Union’s exploration wells, oil and gas drilling in the total time lost drilling time 4 ~ lO%. From the Urals to Volga and Central Asia, the cost and time involved in the treatment of lost circulation accounts for more than 70% of the well-borehole complexities. Tatar joint ventures handle 10 to 13 percent of drilling time each year. In 1980, they spent 24,600 hours to drain 24,120 strata, of which 224,000 strata were spent on 31,500 hours. During the Tenth Five-Year Plan period, 14.14 million strata were encountered and 310,000 hours were spent on drilling. With the Soviet Union’s breakthrough in plugging technology, the time and costs of plugging have dropped dramatically.