莫西庄地区三维工区非线性反演与砂体识别  

Identification of sand body based on seismic high resolution 3D nonlinear inversion in Moxizhuang,Junggar Basin,China

作　　者：李琼[1] 何建军[1] 李正文[1] 

机构地区：[1]油气藏地质及开发工程国家重点实验室(成都理工大学),成都610059

出　　处：《成都理工大学学报（自然科学版）》2017年第6期727-737,共11页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家自然科学基金项目(41274129);国家科技重大专项(2011ZX05035-005-003HZ);中国石油化工股份有限公司西北油田分公司科技攻关项目

摘　　要：准噶尔盆地中部莫西庄的侏罗系三工河组储层砂体在纵向、横向上变化大,且物性不均匀。本文通过对钻井、测井、试油等地质资料的分析研究,以三维地震资料为基础,采用地震高分辨率非线性三维整体反演方法,对多种参数进行了反演和处理,获得了反映砂岩分布特征的速度、密度及伽马等属性参数的三维数据体,并综合地质资料进行沉积分析、砂岩累计厚度和有效砂岩累计厚度及储层分布研究。通过物性特征分析,建立了识别和评价三工河组砂体的物性标准,利用岩性划分标准和地震多属性数据,提取出三工河组砂体和有利砂体的空间展布特征。三工河组砂岩和有利砂岩发育,并以条带、砂坝和席状砂形式展布,展布方向与区域沉积方向一致。其中三工河组优质储层段J1s21和J1s22厚度较大,具备良好的物性条件,具有较高的产储能力和勘探开发前景。The sandstone reservoir of Jurassic Sangonghe Formation at Moxizhuang area in JunggarBasin is controlled by lithology and structures, and characterized by inhomogeneous physicalconditions caused by superimposition of multiphase channel sand body,the vertical and horizontalvariation and the ambiguous distribution of sand bodies. Based on 3D seismic data,such as welldrilling,logging and oil testing, a lot of parameters, including velocity, density, and gammareflecting distribution features of sandstone are obtained by inversion and processing with highresolution nonlinear 3D inversion method. These data are integrated with other geological data toanalyze the deposition,grand total thickness of sandstone,effective total thickness of sandstone anddistribution of reservoir. The identification and evaluation standard of sandbody of SangongheFormation is established on the basis of characteristic analysis of physical property. Thecharacteristics of spatial distribution of sand body and effective sand body of the Sangonghe Formation are obtained according to lithological classification standard and seismic multi-attributedata. It reveals that the sand body and effective sand body of the Sangonghe Formation occur asstripe,sand bar and sheet-like sand parallel to the regional deposition direction. The sand bodies inthe J_1s _2~1 and J_1s_2~2 Sections of Sangonghe Formation have relatively large thickness,and therefore,bear favorable physical property,high capacity of oil and gas and good prospect for exploration and development of natural resources.

关 键 词：莫西庄 侏罗系 储层特征 物性参数 地震属性 地震沉积 

分 类 号：P631.4[天文地球—地质矿产勘探] TE122.24[天文地球—地质学]