Testing the hydraulic characteristics of lost-circulation zone is a basic work in classifying 1ost-circulation zones and laying down the treatment measures.

对漏层水力特性的测试是漏层分类和制定漏层处理措施的基础工作。

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A fourth new application was the temporary sealing of a 305-m perforated oil-producing zone to stop severe lost circulation during a workover to drill deeper and to set a liner across a new zone.

第四个新的申请被暂时封闭305米射孔产油区，以阻止严重堵漏中修井钻得更深定班轮跨越一个新的区。

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