水平井随钻测井曲线的对比分析与校正

随钻电阻率测井在测量水平井和大倾斜井中起主导作用。将随钻电阻率测井与电缆测井的曲线对比发现,经校正后的测井响应更能反映地层真电阻率,但随钻电阻率测井受到井眼、井轴与地层相对倾角、地层各向异性和围岩的影响,利用理论计算或实验研究建立相应的校正图版,进行校正其结果准确,值得推广。

Logging while drilling（LWD） plays an important role in measuring horizontal well and high dip angle well. Through the comparision between resistivity of LWD and resistivity of wire llne logging （WL）, we find that LWD resistivity can image the stratigraphic information much better than WL resistivity, after being corrected. However, LWD is affected by borehole, hole axis, relative formation angle and formation anisotropy and surrounding rock. And then, establish relevant correction charts after theor calculating and experimental investigation. It turns out to he good after correcting and is worth of popularing.