This paper briefly introduces the design of SDQ-91 directional coring apparatus, selection of SDQ-91 borehole measuring instrument and its improvement.
介绍了SDQ- 91型随钻测量定向取心钻具的特点、定向取心器的研制、随钻测量仪的选型与改进等。
The wire-line directional drilling and coring technology can take cores and drill directionally without using down-hole motors.
绳索取心技术因其钻进效率高而广泛应用，但其无法实施定向作业。
Dual coring techniques were first successfully adopted in directional Well TZ436-16, Tarim Oilfield.
塔里木油田首次在TZ4—36—16定向井斜井段采用双简取芯技术并获得成功。
Dual coring techniques were first successfully adopted in directional Well TZ436-16, Tarim Oilfield.
塔里木油田首次在TZ4—36—16定向井斜井段采用双简取芯技术并获得成功。
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