准噶尔盆地西缘春光油田勘探启示  

Exploration inspiration for Chunguang oilfield in Chepaizi area,west of Junggar basin

作　　者：李风勋[1] 王勇[1] 陈丽丽[1] 马宁远[1] 马荣芳[1] 

机构地区：[1]中国石化河南油田分公司石油勘探开发研究院,河南郑州450046

出　　处：《石油地质与工程》2014年第6期1-3,142,共3页Petroleum Geology and Engineering

摘　　要：准噶尔盆地西缘车排子凸起之上的春光油田,属于源外岩性成藏的典型,打破了斜坡区以找地层圈闭为主的勘探思路。本区地层不整合油藏勘探表明,在石炭系凝灰岩岩性背景下,其风化淋滤带具备长距离横向输导的能力;同时该区的地层剥蚀不整合油藏勘探表明,该类油藏顶板条件并非一定需要泥质盖层或盖层厚度等因素,胶结致密的砂岩或者厚度较薄的一些特殊岩性等均可以起到封盖作用。春光油田原油物性的反序分布实质上为本区混源两期充注所造成,春光油田这种独特的油层物性分布规律,有助于把握稠油之上找稀油,稀油沿层找稠油的勘探方向,挖掘出更多的有利方向。Located in Chepaizi uplift,west of Junggar basin.Chunguang oilfield belongs to a typical lithologic reservoir accumulation type outside of the source area,which breaks the exploration strategy of looking for stratigraphic traps in slope area.Stratigraphic unconformity reservoir exploration experience in this area shows that under the background of the carboniferous tuff lithology,the weathering and leached zone is of transverse conducting ability of long distance.At the same time,the stratigraphic erosion unconformity reservoir exploration experience in the area shows the roof conditions of this kind of reservoir are not only centered on factors such as shale cap rock and cap rock thickness,and the sandstone with dense cementing or some special lithology with thinner thickness is also of sealing property.Inverted sequence distribution of reservoir physical properties is essentially resulted by mixed source of double filling,and this unique spring oilfield distribution of reservoir physical properties is helpful to look for thin oil above heavy oil.as for thin oil.it is helpful to look for heavy oil along layers.What is more,it is helpful to dig out more favorable directions.

关 键 词：春光油田 源外成藏 风化淋滤带 致密胶结 反序分布 

分 类 号：TE122.1[石油与天然气工程—油气勘探]