南堡3号构造中深层优势储层发育主控因素及模式

Controlling factors of advantage reservoir and its model of mid-depth formation in No.3 Structure of Nanpu Sag

李亮 张敬艺 赵晓东 刘晓 卿颖 齐立新2

中国石油冀东油田分公司勘探开发研究院，河北 唐山 063000 中国石油冀东油田分公司评价处，河北 唐山 063000

Research Institute of Exploration and Development, Jidong Oilfield Company, PetroChina, Tangshan 063000, China Evaluation Office, Jidong Oilfield Company, PetroChina, Tangshan 063000, China

基于岩心、薄片、分析化验等资料，对南堡3号构造中深层优势储层进行了研究。结果表明：南堡3号构造中深层岩石类型为长石砂岩和岩屑长石砂岩，优势储层岩性主要为含砾不等粒砂岩、砂砾岩和中砂岩；优势储层的发育主要受沉积、构造和成岩作用共同控制，近物源的水下分流河道砂体物性最好，是有利储层砂体最为发育的位置。溶蚀作用为优势储层形成的关键因素，长石体积分数较高、类型丰富，为溶蚀作用奠定了良好的物质基础。优势储层自上而下发育3个次生孔隙发育带。远物源西南部构造高势区和北部低洼带是构造作用控制的优势储层砂体发育区。

Based on core observation, thin section identification and laboratory data analysis, advantage mid-depth formation reservoir in No.3 Structure of Nanpu Sag was studied. The results show that the lithology of mid-depth reservoir in No.3 Structure of Nanpu Sag is arkose and lithic feldspathic. The lithology of advantage reservoir is mainly of the conglomeratic anisometric sandstone, sandy conglomerate and medium sandstone. The development of advantage reservoir is mainly controlled by sedimentary and structure and diagenesis. The underwater distributary channel sand body near provenance is best, which is the location of the most favorable reservoir development. Dissolution is the key factor for advantage reservoir formation, and the feldspar content is higher in the clastic components, which laid a good material basis for dissolution. Three zones of secondary porosity were developed from top to bottom in the most favorable reservoir. Southwest structure far from provenance and low-lying zone in the north of high potential area are the advantage reservoir sand body development zone controlled by the structure.

10.6056/dkyqt201803004