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地震储层预测时需要高精度的测井数据,对测井曲线不仅在储层处要进行环境校正,而且在非储层处也要做环境校正。为了消除井眼扩径和其他影响因素对测井曲线的影响,针对声波和密度等孔隙度测井提出了一套校正办法。首先要找出测井曲线的失真,然后针对引起失真的原因,分别针对声波测井和密度测井提出具体校正办法,主要包括基于阵列声波测井的声波时差重新提取和其他资料的重构-编辑法。上述方法在川东北碳酸盐岩区块进行了实验,经分析与对比,证明该方法是有效的,思路和方法对其他区块也有借鉴意义。
Seismic reservoir prediction requires high-precision well logging data, and logging curves are not only corrected for the environment at the reservoir but also for environmental correction at non-reservoir locations. In order to eliminate the influence of borehole expansion and other influencing factors on well logging curves, a set of calibration methods are proposed for porosity logging such as acoustic wave and density. First of all, we should find out the distortion of the logging curve. Then, according to the cause of the distortion, propose specific correction methods for the acoustic logging and density logging respectively, mainly including the retrieval of acoustic time difference and the reconstruction of other data based on array acoustic logging - Editorial The above method has been tested in carbonate blocks in northeastern Sichuan. The analysis and comparison proves that this method is effective, and the ideas and methods are also of reference for other blocks.