Downhole annular pressure is a key parameter. Conventional pressure loss calculation method is not applicable to a slin - hole.
井底环空压力是小井眼钻井的关键参数，通常的压力降计算方法对小井眼不适用。
Downhole annular pressure is a key parameter. Conventional pressure loss calculation method is not applicable to a slin - hole.
井底环空压力是小井眼钻井的关键参数，通常的压力降计算方法对小井眼不适用。
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