CAJ | 학술논문

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。
십옥유전영성조속우저공、특저삼저층,렬봉능최유효지제고저층삼투솔。통과암심렬봉묘술,경하관찰,대십옥유전영성조저공、특저삼저층구조렬봉적조계화산상、렬봉장도、관도、밀도、충전특정、기차급기주요공제인소진행료분석연구。결과표명,십옥유전영성조주요발육사기렬봉,분별위영성말기화등루고말기발육적근남북（ 10°± 15°） 향화근동서（ 290°±15°） 향적고각도공액전절봉、북동（ 45°±15°） 향공분단렬적반생봉、북서（ 325°±15°） 향고각도장성봉、눈강말기화명수말기발육적북동향（ 45°±15°） 파생전절봉화북북동（ 35°±15°） 향급북서（ 325°±15°） 향적고각도직립전절렬봉。렬봉발육분포주요수공우암성、구조응력장화구조위치。통과대십옥유전영성조렬봉적연구,위십옥유전영성조감탐개발제공료방향화의거。
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.