坪北油田长6储层裂缝特征  

FRACTURE CHARACTERISTICS OF CHANG 6 GROUP IN PINGBEI OIL FIELD

作　　者：李少华[1] 陈新民[2] 姚凤英[2] 张尚峰[1] 

机构地区：[1]长江大学地球科学学院,湖北荆州434023 [2]江汉油田勘探开发研究院,湖北潜江433100

出　　处：《内蒙古石油化工》2006年第2期81-84,共4页Inner Mongolia Petrochemical Industry

摘　　要：坪北油田长6储层属于湖相三角洲前缘砂体,是坪北油田的主力产层。通过用倾角测井及微地震波裂缝监测、几何变形分析和相对地压力分析等方法点、面结合分析了坪北长6储层裂缝特征,按成因总结了三种类型,即剪切构造裂缝、层间缝和压裂缝。构造裂缝、层间裂缝不发育,作为渗流通道对坪北长6储层意义不大。压裂缝中的粒间缝与一般的孔喉所起作用相当,而超微压裂缝在原始状态下对渗流没有意义。The depositional system of Chang - 6 reservoir in Pinbei Oilfield is a deltaic front, and Chang - 6 reservoir is main producing layer. We researched the characters of fractrue of Chang - 6 reservoir through the methods of dip log,micro earthquake wave fracture watching,analyse of geometric distortion and relative earth pressure analyzing, and summarized three type of fractur： shear tectonic fracture, interbedded fracture and pressing fracture. Tectonic fracture and interbedded fracture are developed seldom and have not important sense to chang - 6 reservoir as flow path. Fractures in grain of pressing fracture work as ordinary pore, and supermicro pressing fracture has little sense to flow under original state.

关 键 词：裂缝 储层 坪北 

分 类 号：P618.130.2[天文地球—矿床学] TE348[天文地球—地质学]