储层砂质辫状河的识别——以大庆喇嘛甸-萨尔图油田西部PⅠ_(2~3)为例  

SAND BODY IDENTIFICATION OF BRAIDED RIVER RESERVOIR——AN EXAMPLE FROM THE PI_(2~3) WEST OF LAMADIAN-SAERTU OILFIELD,DAQING,CHINA

作　　者：刘波[1] 赵翰卿[2] 李广月[1] 王良书[1] 刘绍文[1] 

机构地区：[1]南京大学地球科学系,江苏南京210093 [2]大庆油田公司勘探开发研究院,黑龙江大庆163712

出　　处：《石油学报》2002年第2期43-47,共5页Acta Petrolei Sinica

基　　金：国家"九五"科技攻关项目 (95 - 1 0 9- 0 1 - 0 1 - 0 5)的部分研究成果

摘　　要：油田高含水开发后期 ,利用精细地质描述方法 ,根据丰富的密井网测井资料 ,借鉴古代河流砂体露头和现代河流沉积经验 ,对大庆喇嘛甸—萨尔图油田西部、河流相储层PⅠ2 砂岩组 ,进行精细对比、精细描述、模式预测等。表明PⅠ2 砂岩组的PⅠ2 3沉积单元为远源低弯度砂质辫状河沉积。通过岩心观察与描述 ,对结论进行了进一步证实。成果不仅解决了PⅠ2 砂岩组沉积单元精细划分与对比问题、澄清PⅠ2 3砂体成因类型上的认识 ,而且确认了大庆长垣萨、葡、高油层中、相对规模最大的砂质辫状河沉积。结果运用到生产实际中 ,对挖潜剩余油、改善开发效果 。At the high water_cutting phase of oilfield development,based on ancient fluvial sandbody outcrop and modern fluvial sediment expericnce,according to fluvial sediment pattern and formative mechanisms,utilizing abundant well logging curves,the subdivision and correlation,reservoir description and deposition pattern were conducted for the PI 2 3 sand body in west of Lamadian_Saertu Oilfield,which is the end of large fluvial_delta sedimentation system of North of Songliao Basin in China.The formative type of PI 2 3 sedimentary unit is sand_braided river with far_resource and low curvature channel,which can be verified by rock_core and dynamic development data.All of them not only can be used to solve the questions of the subdivision and correlation of PI 2 sand body,clarify the opinions on its formative type,but also identify the only sand braided river sedimentation in the Sapugao oil layer of the middle oil_bearing assemblage in Lamaxing Oilfield.The results above are applied to practice,which has high value in remaining oil analysis and development.

关 键 词：模式预测 储层描述 岩心观察 大庆油田 储层 砂质辫状河 识别 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]