随钻密度测井曲线环境影响自动校正方法研究

针对目前国内外随钻测井资料的精细解释与应用所存在的质量问题，根据实测的随钻密度测井曲线变化情况，重点研究了随钻密度测井环境影响因素及其校正方法。通过对随钻密度测井环境影响校正图版的离散采样读值和最优拟合，并考虑其适用条件，以标准化公式（模型）来代替多张校正图版曲线，实现随钻密度测井资料的环境影响自动校正。实测资料表明，该法结果可靠，能够明显地提高随钻地层评价和地质导向的效果。

Study on Environmental Effect Automation Correction Method of Density Logging While Drilling

Density logging while drilling plays an important role in LWD. Based on the existent quality problem in present LWD data fine interpretation and application at home and abroad, and the actual variable case of density logging curve, this paper studied the environment influencing factor and correction method for density logging while drilling. By reading sample value and the optimum fitting for the density logging while drilling environmental effect correction chart, and considering its applicable condition, using standardization formula (model) displaced more correction charts to realize the environmental effect automation correction of density logging while drilling. The actual measurement result shows that the method is reliable, which can obviously improve the effect of the formation evaluation while drilling and geosteering.