临盘工区岩石热解与气测综合解释评价方法

Comprehensive interpretation and evaluation method of rock pyrolysis and gas logging in Linpan area

近年来PDC钻头在临盘工区钻井过程中得到广泛使用,因其钻出的岩屑细小,常规地质录井分析方法难以准确判断油气显示,已经不能满足录井解释评价的需求。为提高解释符合率,采用气测、地化岩石热解参数图板法,通过建立临盘工区气测C 3/C 2比值与岩石热解S T解释评价图板,结合地质录井资料进行综合解释评价,实现了多项录井方法的综合应用,解决了现场油气快速评价的技术难题,提高了现场解释评价准确率,在胜利临盘工区取得了良好的成效。

In recent years,PDC bits have been widely used in the drilling in Linpan area.Because of the small cuttings drilled,conventional geological mug logging analysis methods cannot accurately determine the oil and gas indication,and can no longer meet the needs of interpretation and evaluation for mud logging.To improve the interpretation coincidence rate,gas logging and geochemical rock pyrolysis parameter methods are adopted,and the gas logging ratio of C 3/C 2 and the interpretation and evaluation chart for rock pyrolysis S T of Linpan area are established with the combination of geological mud logging data to achieve the comprehensive application of multiple mud logging methods.It solved the technical difficulties of on-site rapid evaluation for oil and gas,improved the coincidence rate of on-site interpretation and evaluation,and obtained good results in Linpan area of Shengli.