大斜度井感应测井资料围岩校正方法研究  

A study on side-bed correction of induction log data in highly-deviated wells

作　　者：王慧萍[1] 张才元[2] 朱德怀[3] 韩红珍[2] 徐东岳[2] 陈祥云[2] 

机构地区：[1]中国地质大学(武汉),湖北武汉430074 [2]中国石化河南石油勘探局地球物理测井公司 [3]长江大学

出　　处：《河南石油》2006年第1期27-29,共3页Henan Petroleum

摘　　要：在斜井中井轴与地层界面具有不同的夹角,仪器是偏心测量,围岩对测量值的影响与垂直井不同,以往的校正图版已不适用。通过对1503双感应测井仪器响应方程进行理论推导计算,分析测量因素对响应曲线的影响,制作出不同地层相对倾角情况下的感应测井资料围岩校正图版,并进行连续围岩校正方法研究。通过对任意斜度井中感应测井资料进行围岩校正,能够使校正后的地层电阻率曲线更接近原始地球物理真值,为提高测井曲线质量,提高测井解释符合率提供保障。Included angles between hole - axes and bed boundaries are different in deviated wells and the measuring devices operate in eccentric positions, thus the influences of surrounding rocks on the measurements are different with that in vertical wells and the old correction charts are no longer applicable. Based on the theoretical deduction and calculation of the response function of the 1503 dual induction tool, the influences of measurement factors on response curves are analyzed, side- bed correction charts of induction log data are constructed at different relative dip angles, and continuous side- bed correction methods are studied. Side - bed correction of the induction log data in deviated wells can make the resistivity curves after correction being more close to the initial true geophysical values, so as to improve the quality of logs and the coincidence rate of logging interpretation.

关 键 词：大斜度井 感应测井 围岩电阻率 围岩校正 校正图版 连续围岩校正 

分 类 号：P631.81[天文地球—地质矿产勘探]