徐深气田徐东地区营城组一段火山岩储层岩相特征  

Lithofacies of Volcanic Reservoir of One Member of Yingcheng Formation in Xudong Area in Xushen Gas Field

作　　者：陈欢庆[1] 胡永乐[1] 冉启全[1] 闫林[1] 王拥军[1] 许磊[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《天然气地球科学》2010年第6期924-930,共7页Natural Gas Geoscience

基　　金：国家科技重大专项"含CO2天然气藏安全开发与CO2利用技术"项目(编号:2008ZX05016-001);中国石油勘探开发研究院中青年创新基金"火山岩气藏储层;火山岩体与火山岩相相关研究"项目(编号:2009-B-10-03)联合资助

摘　　要：在火山岩岩石类型划分基础上,结合地质、测井和地震资料综合分析,识别火山岩体。在此基础上将研究区目的层火山岩相划分为爆发相、溢流相等5种类型和溅落亚相、空落亚相等16种亚相类型。通过单井、剖面地震相、平面地震相和火山岩相特征分析,认为火山口对火山岩体具有重要的控制作用,在火山岩体的不同部位发育不同的火山岩相类型,不同类型的火山岩相展布又控制着火山岩气藏储层的分布特征。研究区储层主要发育于爆发相和溢流相中,少数发育于其他相带。爆发相溅落亚相、空落亚相,侵出相外带亚相、中带亚相,溢流相下部亚相、顶部亚相、上部亚相,火山通道相的火山颈亚相等为优质储集体发育部位。Based on volcanic rock types,we identified the volcanic bodies,in combination with geological background,logging and seismic data.Volcanic lithofacies for selective layer were classified into 5 facies,such as eruptive and effusive,etc.and 16 sub-facies,like as landing,etc.By means of seismic facies and volcanic lithofacies for single well,cut and plane sections,we found out that crater distribution constrained development of volcanic body,associated with different volcanic facies in the different positions of volcanic body.The space of volcanic facies controlled the high quality reservoir of volcanic rock.Most of high-quality reservoir was mainly distributed in the areas of eruptive and effusive facies,and few did in other facies.The high-quality reservoir was developed in the areas of landing and air falling sub-facies in eruptive facies,outer and middle extrusive sub-facies in extrusive facies,lower,upper and top sub-facies in overflow facies,and volcanic neck sub-facies in volcanic channels facies.

关 键 词：徐深气田 火山岩 储层 岩相 火山岩体 

分 类 号：P618.130.2[天文地球—矿床学]