Conventional double tube bits should be used as bits for drilling, while coring tool is double tube.
当取心钻具采用双层管时，钻进所用的钻头就需要用普通双管钻头。
This paper mainly introduced the casing program of the coalbed gas well, drilling parameter, coring tool and technologies and so on.
文中主要介绍了煤层气井的井身结构、钻井参数、取心工具和工艺等。
Glass steel coring tool is specifically developed for improving the core recovery of conglomeratic weak formation and the core integrality in Liaohe Oilfield.
玻璃钢取心工具是专为提高辽河油田含砾石松散地层取心收获率和岩心完整性而研制的。
The new coring tool that made of glass fiber reinforced plastic is used to improve the coring recovery and integrity in the loose gravel formation in Liaohe Oilfield.
玻璃钢取心工具是专为提高辽河油田含砾石松散地层取心收获率和岩心完整性而研制的。
The basic difference of outside-vent coring tool from conventional one is that it has a special outside-vent joint installed between safety joint and swivel assembly.
外返孔取心工具与常规取心工具在结构上的根本差异是在安全接头与旋转总成之间设置了一个特殊的外返孔接头。
Drilling displacement interference is a typical interference in the application of home-made rotary sidewall coring tool which influences engineers normal operation and coring result.
钻进位移干扰是国产旋转式井壁取心仪应用中的一类典型干扰，直接影响着操作工程师的正常操作和取心结果。
The wire-line coring tool of HSQ serial has kept up the technical features of conventional placer drills and derived the advanced structure from steel cable fishing tool for inner barrel.
HSQ系列绳索取心钻具，既保持了现用砂钻钻进的工艺特点，又发挥了钢绳打捞内管技术的方便性。
The wire-line coring tool of HSQ serial has kept up the technical features of conventional placer drills and derived the advanced structure from steel cable fishing tool for inner barrel.
HSQ系列绳索取心钻具，既保持了现用砂钻钻进的工艺特点，又发挥了钢绳打捞内管技术的方便性。
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