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随钻测井井下地震技术可以根据地震等值线图确定钻头的位置或是在钻井过程中形成一张钻头前的地震阻抗图。这些技术可以准确地确定钻井目的层的深度,明确孔隙压力海侵的程度。随钻测井超深电阻率技术利用井下地震分辨率可满足在油藏中进行地质导向的需求。该技术主要应用于描述油水界面和油藏盖层与底部页岩之间距离的大小。
LWD Downhole Seismic Technology It is possible to determine the location of a drill bit based on an earthquake contour map or a seismic impedance map before forming a drill bit during drilling. These techniques can accurately determine the depth of the target well and determine the extent of pore pressure transgression. The ultra-deep resistivity logging-while-drilling technique exploits downhole seismic resolution to meet the need for geosteering in reservoirs. This technique is mainly used to describe the size of the oil-water interface and the distance between the reservoir caprock and the bottom shale.