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在深部地层寻找油、气是石油工业发展到一定程度后的必然行为。由于深井、超深井要钻穿多套地层压力系统,具有高温、高压、重载等特点,在经济和技术上具有很大风险性。因此,一个国家深井(包括超深井)的钻井水平,在很大程度上反映了一个国家的钻井技术水平。美国是世界上深井打得最多的国家,仅1993年深井完井数就占世界深井完井数的53.4%。衡量深井钻井技术整体水平通常用两个指标:完
Looking for oil in the deep strata is a necessary act after the petroleum industry develops to a certain extent. As deep wells and ultra-deep wells are drilled through multiple sets of formation pressure systems, they have the characteristics of high temperature, high pressure and heavy load, which are economically and technically very risky. Therefore, the drilling performance of deep wells (including ultra-deep wells) in a country largely reflects the drilling technology of a country. The United States is the country that has hit the deepest wells in the world. In 1993 alone, the number of deep well completions accounted for 53.4% of the world’s deep well completions. Measuring the overall level of deep well drilling technology is usually two indicators: End