... 井壁稳定holestability,stableborehole 井底downhole 井底静止温度低BHSTlowboreholestatictemperature ...
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...以来，在国家863计划的资助下，自主研发了奋斗五号船CPT系统，并在2008年在南海北部海域试验成功，该设备属于 井下式 ( Downhole )的CPT测量设备。
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downhole instrument 下井仪器
downhole safety 井下安全
downhole drill 潜孔钻机
downhole flowmeter 井下流量计
downhole gas burner 井下气体燃烧器 ; 井底气体燃烧器
downhole camera 井下照相机
downhole burner 井下燃烧器
downhole tool 井下工具 ; 下井仪器
downhole pulser 井下脉冲发生器
ADJ (in the oil industry) denoting any piece of equipment that is used in the well itself (石油工业)油井中使用的
Such problems must be highlighted because they are directly related to downhole safety and drilling efficiency.
该问题直接涉及井下安全和钻井效率，必须予以高度重视。
Coupled with uniquely designed bumper springs from Weatherford, the plunger can withstand high impacts at the surface and downhole.
再加上威德福独特的高性能缓冲弹簧，柱塞能够承受在地面和井下高强度的冲击。
Steering tools are essential part of steering drilling system and one of key factors for fulfilling downhole closed - loop drilling.
导向工具是导向钻井系统的核心，是实现井下闭环钻井的关键因素之一。
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