十屋油田营城组储层裂缝发育特征及控制因素  

Development characteristics and controlling factors of fractures in Yingcheng Formation in Shiwu Oilfield

作　　者：王时林[1] 秦启荣[1] 黄亮[2] 樊佐春[3] 

机构地区：[1]西南石油大学资源与环境学院,四川成都610500 [2]中国石油大庆油田有限责任公司第九采油厂,黑龙江大庆163853 [3]中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010

出　　处：《复杂油气藏》2012年第1期1-4,共4页Complex Hydrocarbon Reservoirs

基　　金：国家重大专项"国内外裂缝型油气藏调研与典型油气藏解剖"(2008ZX05001)

摘　　要：十屋油田营城组属于低孔、特低渗储层,裂缝能最有效地提高储层渗透率。通过岩心裂缝描述,镜下观察,对十屋油田营城组低孔、特低渗储层构造裂缝的组系和产状、裂缝长度、宽度、密度、充填特征、期次及其主要控制因素进行了分析研究。结果表明,十屋油田营城组主要发育四期裂缝,分别为营城末期和登娄库末期发育的近南北( 10°± 15°) 向和近东西( 290°±15°) 向的高角度共轭剪切缝、北东( 45°±15°) 向控盆断裂的伴生缝、北西( 325°±15°) 向高角度张性缝、嫩江末期和明水末期发育的北东向( 45°±15°) 派生剪切缝和北北东( 35°±15°) 向及北西( 325°±15°) 向的高角度直立剪切裂缝。裂缝发育分布主要受控于岩性、构造应力场和构造位置。通过对十屋油田营城组裂缝的研究,为十屋油田营城组勘探开发提供了方向和依据。The Yingcheng Formation of Shiwu Oilfield belongs to a low porosity and ultra-low permeability reservoir,and fractures in the formation can effectively increase reservoir permeability.The systems and altitude,length,width,density,and controlling factors of the fractures were investigated by using data of core description.The fractures of the Yingcheng Formation,which were mainly developed through four periods,consist of high angle conjugated shear fractures in nearly south-north direction and nearly east -west direction,associated fractures of basin-controlling-fault in north-east direction,and high angle tension fractures in north-west direction in the end of Yingcheng and Denglouku stage,and derived shear fractures in north-east direction and high angle up-right shear factures in north-east and north-west direction in the end of Nenjiang and Mingshui stage.The development and distribution of the fractures were controlled by lithologic characteristics,regional tectonic stress,and tectonic position.

关 键 词：裂缝 裂缝特征 控制因素 营城组 十屋油田 

分 类 号：TE122.23[石油与天然气工程—油气勘探]