火山岩储层特征及影响因素分析——以新疆三塘湖盆地牛东区块为例  

ANALYSIS ON CHARACTERISTICS AND INFLUENCING FACTORS OF VOLCANIC RESERVOIRS --A CASE OF NIUDONG BLOCK IN SANTANGHU BASIN IN XINJIANG

作　　者：刘清俊[1,2] 聂保锋[3] 于炳松[1] 张聪[1] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室,北京100083 [2]中国地质大学长城学院,河北保定071000 [3]首都师范大学资源环境与旅游学院,北京100048

出　　处：《大庆石油地质与开发》2011年第1期25-31,共7页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家“973”项目（2005CB422103和2006CB202302）资助.

摘　　要：基于岩心、铸体薄片、矿物化学分析等，对新疆三塘湖盆地牛东区块晚石炭世-二叠纪火山岩储层特征进行研究。该储层主要包括熔岩和火山碎屑岩。原生孔隙主要包括原生气孔、杏仁孔、晶粒间孔、收缩缝等；次生孔隙主要包括溶孔、风化裂缝、构造裂缝等。火山岩经历了广泛的充填交代作用和晚期溶蚀作用，充填物主要为片沸石、浊沸石、绿泥石／蒙脱石混层以及硅质。溢流相的气孔-杏仁孔发育段既是原生孔隙发育的部位，后期溶解作用又往往先在气孔和杏仁孔中发生，是最为有利的储集相带。Based on analyses of core, cast thin section, mineral chemistry and so on, the Late Carboniferous-Permian volcanic reservoir characteristics of Niudong Block in Santanghu Basin in Xinjiang are investigated. This reservoir is mainly composed of lavas and efflatas. The primary pores mainly include primary air holes, amygdales, intercrystalline pores and shrinkage joints; the secondary pores mainly include dissolved pores, weathered fissures, structural fractures and so on. The volcanic rocks have experienced the extensive filling metasomatism and the late denudation, with euzeolites, adelforsit, mixed layer of chlorite/montmorillonite and kiesels being the main fillers. The intervals with well-developed air holes-amygdales of effusive facies are the places where the primary pores are well-developed, and moreover the late dissolution usually happens in the air holes and amygdales first, therefore these intervals are the most favorable accumulating facies.

关 键 词：新疆三塘湖盆地 火山岩 矿物化学 储层特征 影响因素 

分 类 号：TE121[石油与天然气工程—油气勘探]