东濮凹陷沙三上盐间泥岩裂缝油气藏地震识别及描述

泥岩裂缝油气藏在东濮勘探的历史上屡有发现,由于该类油藏的隐蔽性和复杂性,预测和勘探难度都较大,初期发现具有较大的偶然性.知何利用地震资料对其进行识别和预测,是盐间泥岩裂缝油气藏成功勘探亟待解决的技术关键.针对东濮凹陷柳屯洼陷带沙三上盐间泥岩裂缝油气藏地震地质特点,综合利用地震、钻井、测井等多种信息,对泥岩裂缝的录井及岩...

Seismic identification and description technique for upper Es3 fractured mudstone reservoir with salt interbed in Dongpu Depression

Fractured mudstone reservoirs are always being found in the exploration history in Dongpu Depression.However,because of its concealment and complexity,the prediction and exploration about this kind of reservoir is very difficult.The fractured mudstone reservoirs have been found by chance in initial exploration stage.So,how to identify and predict the fractured mudstone reservoir by the use of seismic data is a key technique which requires to be resolved in the exploration of this kind of reservoir.In this paper,through the analysis of the geological and seismic features of the fractured mudstone reservoir in upper Es3 salt interbed in Liutun Sag,the characteristics of core and logging data about fractured mudstone reservoir have been studied by means of comprehensive explanation of seismic sections,drilling and well logging data.The paper conducts the petrophysical analysis and the vertical and lateral seismic response feature analysis for single well and multiple wells on the basis of normalization for logging data.It determines the geophysical features in this area which are the strong amplitude,low density,low velocity and low-impedance.On the basis of the accurate selection of sensitive seismic parameters,the fractured mudstone reservoir has been predicted and identified in this area by using the seismic attributes analysis and wave impedance inversion.And good application effects have been achieved.