Erickson Kernell IP, LLC
Multifunctional directional wireline core drilling device
A multifunctional directional wireline core drilling device includes an outer assembly, an inner assembly, a core unjamming mechanism, and a directional coring mechanism. According to the present disclosure, wireline core drilling can be fulfilled; in addition, the directional coring mechanism can truly restore the strike and azimuth of a stratum facture by obtaining a core with an azimuth. By controlling the flow of drilling fluid during drilling, the core unjamming mechanism can effectively reduce core abrasion, generated due to jamming in the core barrel, during drilling, so that the core recovery of a fractured stratum prone to causing core jamming and the drilling efficiency are greatly improved.
Institute of Exploration Techniques, Chinese Academy of Geological Sciences
E E E E
E21B E21B E21B E21B
inventional inventional inventional inventional
Wenshi Jie Longlong Hengchun Jia
Wang Xu Cao Zhang Yan