溱潼凹陷西斜坡构造-岩性圈闭识别技术及应用效果  

Identification technology of structural-lithologic traps and its application effect in the western slope of Qintong Sag,China

作　　者：孟美辰 MENG Meichen(Research Institute of Exploration and Development,East China Branch of SINOPEC,Nanjing 210011,China)

机构地区：[1]中国石化华东油气分公司勘探开发研究院,南京210011

出　　处：《成都理工大学学报（自然科学版）》2021年第1期46-52,共7页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家科技重大专项(2017ZX05049001-004);中国石化科技项目(P17011-4)。

摘　　要：探讨溱潼凹陷西斜坡古近系阜宁组第三段薄砂岩储层的构造-岩性圈闭识别技术。以断裂系统研究为基础,评价断层的侧向封堵和油气输导能力;针对岩性油藏薄储层预测的难点,建立正演模型分析薄砂体对地震波形的影响。通过敏感参数分析,优选SP敏感曲线进行波形指示反演,识别出阜宁组第三段薄层砂岩的展布特征及一系列的构造-岩性圈闭群。This paper discusses the tectonic-lithologic trap identification technology of the third member of the Paleogene Funing Formation(E f 3)in the west slope of Qintong Depression.Based on the study of fault system,the lateral sealing and oil and gas transmission capacity of fault are evaluated.Aiming at the difficulty of predicting lithologic thin reservoir,the forward model is established to analyze the influence of thin sand body on seismic waveform.Based on the analysis of sensitive parameters and the waveform indication inversion of SP sensitive curve,the distribution characteristics and a series of structural-lithologic traps of thin-bedded sandstone in the third member of Funing Formation are identified.The result shows that the application of structural-lithologic trap to the analysis of E f 3 in western slope of Qintong Sag has made a great success,and hundreds million tons of oil reserves have been discovered.It may provide necessary guidance for the future exploration.

关 键 词：阜宁组 构造-岩性圈闭 断裂系统 波形指示反演 自然电位 

分 类 号：TE122.3[石油与天然气工程—油气勘探] P631.4[天文地球—地质矿产勘探]