地质力学学报2018，Vol.24Issue(1)：42-50,9.DOI:10.12090/j.issn.1006-6616.2018.24.01.005
叠前反演方法在致密砂岩气储层预测中的应用
APPLICATION OF PRESTACK INVERSION METHOD IN THE PREDICTION OF TIGHT SANDSTONE GAS RESERVOIR
摘要
Abstract
Taking A block of eastern Ordos Basin as an example,reservoir petrophysical sensitive parameters are demonstrated though the work of petrophysical analysis which shows that the single impedance parameter can't be applied to identify the reservoir and the parameter Vp/Vs must be used for the identification.Though the analysis of seismic simulation,the seismic resolution and the seismicresponse characteristics of different sand thicknesses are studied.Based on the study of seismic simulation,in order to solve the problems of tiny thickness reservoir,rapid lateral variation and reservoir recognition difficulty,the pre-stack geostatistical inversion is chosen as the research method.Comparison of the thickness of well log interpretation and reservoir inversion in 11 wells shows that pre-stack geostatistical inversion can effectively identify reservoir with thickness more than 3m.The results of inversion are considered achieving a high accuracy prediction of reservoir with a thickness average error rate of 7.5％,the average error of five blind wells is 10.2％ and the new well is 1.73％ which provides a strong reference for well placement.关键词
致密砂岩气/正演模拟/叠前地质统计学反演/储层预测Key words
tight sand gas/forward simulation/pre-stack geostatistical inversion/reservoir prediction分类
天文与地球科学引用本文复制引用
薛明喜,陈开远,田泽华,贾曙光..叠前反演方法在致密砂岩气储层预测中的应用[J].地质力学学报,2018,24(1):42-50,9.基金项目
国家“十三五”重大专项“薄层地震波场特征与反演研究”专题(2016ZX05002-005-008) （2016ZX05002-005-008）
