论文部分内容阅读
测井曲线是对所钻遇地层物性特征的直接反映 ,充分利用测井资料 ,有利于预测和识别古岩溶发育带。在构造背景分析基础上 ,依据古岩溶在钻井和测井上的显示 ,利用曲线组合对比方法 ,对岩溶地层进行了测井相分析 ,得出“四低二高”的古岩溶识别标志。根据区域构造演化史提出岩溶演化模式 ,指出多期的构造旋回 ,复杂的断块掀斜作用和长期的化学活动性流体的溶蚀是研究区古岩溶发育的主要因素。
Logging curve is a direct reflection of the physical characteristics of the formations encountered, and make full use of the logging data to predict and identify the karst zone. Based on tectonic background analysis, based on the analysis of paleokarst in drilling and well logging, the logging combination analysis method was used to analyze the logging facies of karst strata, and the paleokarst identification mark of “four low and two high” was obtained. Based on the evolution of regional tectonic evolution, the evolution pattern of karst is proposed. It is pointed out that multicycle tectonic cycles, complicated fault block tilting and long-term chemical active fluid erosion are the main factors in the development of paleokarst.