Shale Oil and Gas Well Logging Evaluation in Liaohe Depression

Liaohe depression Paleogene shale has great potential in shale oil and gas exploration. Well logging technology is an effective means to evaluate shale oil and gas. The logging response characteristics of Paleogene shale were studied and the separation form of acoustictime and resistivity curves were classified. Thus, high quality shale was qualitatively and semi-quantitatively identified by types of curves separation form. Meanwhile, sedimentary environment of the formation of high quality shale was analyzed. By multivariate linear regression method,Delta lgR technology was improved to calculate TOC(total organic carbon). The error of the calculated TOC is small, which indicate the improved formula has certain practicality in Liaohe depression.