商741断块沙一段火山岩储层特征及有利层位  

Characteristics of vocanic rock reservoir and prediction of favorable stratigraphic position

作　　者：王明健[1] 国景星[2] 梁金萍[3] 

机构地区：[1]中国地质大学能源学院,北京100083 [2]中国石油大学地球资源与信息学院,山东东营257061 [3]胜利油田分公司地质科学研究院,山东东营257015

出　　处：《断块油气田》2010年第1期10-13,共4页Fault-Block Oil & Gas Field

基　　金：中国石化胜利油田分公司科技攻关项目"商741;商58断块区沙一段特殊储层研究"(0537-0502)部分成果

摘　　要：在前人研究的基础上,综合利用岩心、薄片、扫描电镜等资料,从火山岩的岩性、岩相特征、孔隙类型及储层物性等方面入手,深入研究了惠民凹陷商741断块沙一段火山岩储层特征。研究发现该区火山岩的形成由构造运动控制,自下而上可划分为6期;岩性主要为正常的火山碎屑岩类、沉积火山碎屑岩类和火山碎屑沉积岩类;研究区沙一段火山岩属于爆发相,可划分为火山口、近火山口、远火山口和火山沉积4个亚相;储集空间主要为原生孔隙和裂缝、溶蚀孔隙和构造裂缝;储集物性主要受岩相、岩石类型、成岩作用和构造运动影响。基于以上认识,结合储层物性资料和试油资料,预测了沙一段火山岩储层的有利储集层位,从而为后期的油气开发提供了依据。Based on the research of previous specialist, this article studies the characteristics including lithnlogic characteristitcs, lithofacies characteristics, pore types, reservoir physical propev＇ty of vocanic rock in section 1 of Shahejie Formation of Shang 741 Block which is located in Huimin Depression by using the core data, thin section data and scanning electron microscope data. The results indicate that the formation of vocanic rnck is controlled by tectonic movement and the vocanic rock can be devided into six stages from bottom to top. The principal lithologic types are volcanielastic rock, sedimentary volcanic rock and pyroelast sedimentary roek. The vocanic roek in the studying area is fnrmed by vnlcanic eruption and can be divided into four intrafaeies which are crater, proximal crater, distal crater and volcanogenic sedimentation. Storing space mainly are primary pore, primary fracture, dissolution pore and structural fracture. The reservoir quality are affected by lithotacies, rock type, lithogeny and posterior tectonic, movement. Base on the above studying results, we conclude the favorable stratigraphic position of vocanic rock by analyzing the physical property data and well testing data comprehensively and prnvide the criteria for the following exploitation.

关 键 词：沙一段 火山岩 储集性能 有利相带 商741断块 

分 类 号：TE122.222[石油与天然气工程—油气勘探]