摘要
为了搞清三肇地区油气富集规律及有利油气富集区,针对该区沉积体系类型、砂体分布特征及成藏主控因素,分析了沉积体系与储层质量的关系。研究结果表明,三肇地区以浅水湖泊-三角洲沉积体系为主,受多物源控制,形成错叠连片的分流河道砂,主要呈条带状,河道规模小,砂体薄,物性差,地层岩性横向变化快;河道砂体岩性圈闭发育,主要形成岩性、断层-岩性油气藏,储层的质量明显受控于油藏的沉积体系。不同沉积微相类型具有不同的粒度、分选及杂质含量组合,影响着砂体的孔渗性。有利的沉积相带,其储层质量好,储集能力和渗流能力强,开发效果好。因此,应在研究沉积体系和成藏规律的基础上,优选有利的沉积相带进行开发。
In order to clarify the oil concentrate rule and the advantageous oil gas enrichment region,this paper studies the deposition type,the sand body geometry,the master control factor of play,and analyzes the relationship between the deposition system and the reservoir quality.The result shows that in Sanzhao shallow lakes region-main delta depositional system,the area is affected by the formation of multi-source control fault stacked distributary channel sandbody lace,the main strip is a small scale river,sandbody is thin with poor physical properties; formation lithology changes rapidly; channel sandbody lithological trap developes mainly the formation lithology,fault-lithologic reservoirs,reservoir quality is controlled by the depositional system. There are different granularities,the separation and the foreign inclusion combinations in the different deposits,they influellce granulated substance body’s physical property. In the advantageous sedimentary facies belt,its reservoir quality is good,accumulation ability and transfusion ability,the development effect are good,therefore its optimal advantageous sedimentary facies belt developes at the base of deposition system.
出处
《长江大学学报（自科版）（上旬）》
CAS
2010年第2期32-36,共5页
JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG
基金
中国石油天然气股份公司科技攻关项目(030127)
关键词
大庆外围
三肇地区
沉积体系
储层质量
Daqing peripheral zone
Sanzhao Area
depositional system
reservoir quality
