目前海上钻井作业日趋复杂,在水平井中需要在钻进过程中进行导向,以确保其始终保持在开发层中,尽管随钻测井(Logging while Drilling,LwD)技术已被广泛应用,但有时基于薄开采区上下厚度的限制,这种地质导向只能通过特定的设备(旋转导向)来实现,当井打到储层与非储层间交界处时,LwD可以检测到,由于有了旋转导向便可立即调整,非导向设备无法用于矫正井眼轨迹,因此需要使用LwD加旋转导向联合作业.基于此,本文就针对上述问题展开论述,以供参考.
Logging While Drilling Combined with Rotary Steerable Operation Technology
At present,offshore drilling operations become increasingly complex,and steerable operation in horizontal wells is required during drilling to ensure that they are always maintained in the development layer.Although Logging While Drilling(LWD)technology has been widely used,due to the limitation of the upper and lower thickness of thin mining areas,this kind of geological steering can only be achieved by specific equipment(rotary steering).LWD can be detected when the well is drilled to the junction between the reservoir layer and the non-reservoir layer.With the help of rotary steerable,it can be adjusted immediately,the un-steerable equipment cannot be used to correct the borehole trajectory,so LWD combined rotary steerable operation is required.Based on this condition,this paper discusses the above issues for reference.
logging while drillingrotary steerable systemGeopilotat bit inclinationat bit gamma
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