基于叠前反演的储层预测技术在陕北黄土塬白云岩气藏的应用
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
近年来,陕北黄土塬地区下古生界奥陶系中组合马五5地层发现了一大批白云岩岩性气藏。但是由于黄土塬地表条件复杂,地震资料成像精度差,马五5储层分布面积广、厚度薄、非均质性强、横向变化快,地震预测难度非常大。文中针对近年在陕北苏203井区实施的600 km2三维高保真地震资料,在强化岩石物理分析和叠前反演的基础上,创新应用FFP(岩相流体概率)分析技术,结合完钻井拟合弹性参数函数关系式,计算得到工区马五5地层的白云岩概率体、含气概率体、孔隙度及含气饱和度,刻画了苏203井区马五5白云岩储层含气有利区的平面展布。评价、落实了钻探有利目标,取得了较好的效果。
In recent years,a large number of dolomite lithologic gas reservoirs have been found in the middle part of Ordovician strata in the Shanbei loess tableland.Nevertheless,the surface conditions of this area are complex,which leads to a poor seismic data imaging accuracy,and the main reservoir Mawu5 Formation of Ordovician is characterized by extensive distribution,thin reservoir,strong heterogeneity and drastic lateral variation in physical properties,which results in more difficulties in seismic prediction.With the 3D high-fidelity seismic data of 600 km2 collected in the Shanbei loess tableland in recent years,technologies of FFP analysis and function formula between the elastic parameters fitted by drilled wells were applied innovatively based on an analysis of rock physical sensitive factors and the strengthening of pre-stack inversion.The dolomite probability,gas probability,porosity and gas saturation of Ma55 Formation in the project was calculated.The favorable gas area in the dolomite reservoir of Ma55 in the Su203 well district was described clearly,and then the favorable drilling targets were evaluated and obtained,thus achieving good results.
引文
[1]杨华,王宝清,孙六一,等.鄂尔多斯盆地古隆起周边地区奥陶系马家沟组储层影响因素[J].岩性油气藏,2013,25(3):9-16.
    [2]杨华,包洪平.鄂尔多斯盆地奥陶系中组合成藏特征及勘探启示[J].天然气工业,2011,31(12):1-10.
    [3]付金华,魏新善,任军峰,等.鄂尔多斯盆地天然气勘探形式与发展前景[J].石油学报,2006,27(6):1-4.
    [4]程建远,李宁.黄土塬区地震勘探技术发展现状综述[J].中国煤炭地质,2009,21(12):73-75.
    [5]轩义华,秦成岗,汪瑞良,等.三维叠前同步反演技术在番禺天然气区的应用[J].石油物探,2010,49(3):257-267.
    [6]郎晓玲,彭仕宓,康洪全,等.叠前同时反演方法在流体识别中的应用[J].石油物探,2010,49(2):164-169.
    [7]李艳玲.AVO叠前反演技术研究[J].大庆石油地质与开发,2006,25(5):103-105.
    [8]李凌高,甘利灯,杜文辉,等.叠前地震反演在苏里格气田储层识别和含气性检测中的应用[J].天然气地球科学,19(2):261
    [9]王维红,林春华,王建民,等.叠前弹性参数反演方法及其应用[J].石油物探,2009,48(5):483-492.
    [10]Connolly P.Elastic impedance[J].The Leading Edge,1999,18(4):438-452.
    [11]张盟勃,史松群,潘玉.叠前反演技术在苏里格地区的应用[J].岩性油气藏,2007,19(4):91-94.
    [12]晏信飞,曹宏,姚逢昌,等.致密砂岩储层贝叶斯岩性判别与孔隙流体检测[J].石油地球物理勘探,2012,47(6):945-950.
    [13]李艳华,楚泽涵.含气层纵波声速与孔隙度、泥质含量和含水饱和度的关系[J].测井技术,2000,24(3):183-187.
    [14]潘仁芳.AVO的内涵与外延[J].石油天然气学报,2006,28(2):50-55.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心