Cataclasite series; Rate of core recovery; Single Rotary and Double Tube core Barrel, Structure of drilling tool; drilling technology.
碎裂岩系；取芯率；双管单动钻具；钻具造型；钻探工艺。
The swivel-tube barrel can effectively increase core recovery rato. suitable for drilling in formations in which oblique hole comes easy. It is effective to assure hole quality.
单动双层岩芯管钻具结构简单、操作方便、同轴度好、适用寿命长，能有效地提高岩、矿芯的完整度。
The swivel-tube barrel can effectively increase core recovery rato. suitable for drilling in formations in which oblique hole comes easy. It is effective to assure hole quality.
单动双层岩芯管钻具结构简单、操作方便、同轴度好、适用寿命长，能有效地提高岩、矿芯的完整度。
应用推荐