现场录井气层产能快速评价方法研究

为了给选取有利层位进行试气作业提供可靠依据，在统计分析近两年鄂尔多斯盆地北部地区施工井气测录井及试气资料的基础上，分析了全烃净增值、对比系数与气层产能的相关性，在考虑了影响气测值及气层产能评价因素的前提下，提出了根据地面产能指数修正值评价气层产能的可行性。通过25口井25个单层相关数据与试气结果的对比分析，得出了利用对比系数和地面产能指数评价气层产能的标准，实际情况表明评价效果较好。统计分析认为全烃净增值与气层产能无直接相关性，不宜作为现场评价气层产能的直接参数。

Fast evaluation method for gas zone productivity on the well-site mud logging

In order to provide the reliable basis for selecting the suitable zone to carry out gas test operation, the paper analyzed the correlativity of the net incremental value of total hydrocarbon and the correlation factor with gas zone productivity on the basis of statistics and analysis of gas logging and gas testing data in Erbei area in the recent two years, and provided the feasibility to evaluate gas zone productivity according to the modified values of surface productivity index after considering the condition of the factors influencing the gas value and the gas zone productivity evaluation. By correlation and analysis of the related data and gas testing results of 22 single zones in 25 wells, the standard for evaluating gas zone productivity was obtained by the correlation factors and surface productivity index, and the evaluation result was better though the practical application. It was considered through the statistics and analysis that there was no direct correlativity between the net incremental value of total hydrocarbon and gas zone productivity and the net incremental value of the total hydrocarbon was not suitable to be used as the direct parameter for evaluating well-site gas zone productivity.