生物扰动对砂岩储集性和含油性的影响  

THE INFLUENCE OF THE BIOTURBATION ON THE QUALITY OF THE RESERVOIR AND OILBEARING CAPABILITY OF THE SANDSTONE RESERVOIRS

作　　者：尹燕义[1] 王国娟[1] 方少仙[1] 

机构地区：[1]大庆石油学院秦皇岛分院,西南石油学院

出　　处：《石油勘探与开发》1996年第5期29-31,共3页Petroleum Exploration and Development

摘　　要：在百色盆地那读组发现并研究了生物扰动储集岩，根据生物扰动面积大小，将其划分为生物潜穴发育层、弱生物扰动层、中等生物扰动层、较强烈生物扰动层和强烈生物扰动层。生物扰动强度受水中含氧量、食物供给和沉积作用过程的制约。生物扰动能改变岩石结构，对改善砂岩的储集性和含油性有重要影响。Bioturbated sandstone reservoirs in Nadu Formation of Baize basin have been discovered and studied. Five types of the bioturbated sandstone reservoir have been divided according to percentage of the bioturbated area on the core section, which are cavity developed reservoir, weakly bioturbated reservoir, medium bioturbated reservoir, fairly strong bioturbated reservoir and strongly bioturbated reservoir. The strength of the bioturbation is affected and controlled by the oxygen content of the water, 'feeding biota with food', and depositional process. The bioturbation can improve the texture of rocks and enhance the quality of the reservoirs and their oil-bearing capability.

关 键 词：遗迹化石 储集层 含油量 百色盆地 生物扰动 

分 类 号：P618.130.2[天文地球—矿床学]