川口油田川46井区长6^1低阻油层成因机理分析  

RESEARCH ON THE FORMATION MECHANISM OF CHANG 6~1 LOW-RESISTIVITY OIL RESERVOIR OF CHUAN 46 WELL BLOCK IN CHUANKOU OILFIELD

作　　者：郭兰[1] 张小莉[2] 丁超[2] 李龙[1] 马志武[1] 

机构地区：[1]延长油田股份有限公司化验中心 [2]西北大学地质学系

出　　处：《国外测井技术》2012年第3期19-22,3,共4页World Well Logging Technology

基　　金："十一五"国家科技支撑计划(2007BAB170)

摘　　要：低阻油层形成的主控因素和成因机理是近年来石油地质研究的热点问题。对低阻油层的成因机理分析是低阻油层识别的关键，也是一大难题，只有正确分析其成因，才有可能探索有效识别低阻油层的方法，发现潜在油层，为老井区挖潜提供依据，同时也为类似地质条件下的其它油田的油层判识提供参考。为此，笔者以岩石物理研究为基础，以测井响应特征为对象，对川口油田川46井区长6^1低阻油层的成因机理进行详细分析。研究表明，川46井区长6^1油层具有储层薄、粒度细、高束缚水饱和度、高矿化度地层水及高泥质含量的特点，是低阻油层形成的主控因素。此外，高放射性砂岩和钻井液的侵入，在测井曲线响应中，同样表现为相对低阻的特征。The key control factors and formation mechanism of low-resistivity oil reservoirs is a hot issue of petroleum geology research in recent years.Research on the formation mechanism of low-resistivity oil reservoirs is essential to explore potential reservoirs. It will provide reference for identifying reservoirs of the similar geological condition in other oilfield.Therefore,taking the logging response characteristics as the object, the writers analyse the formation mechanism of Chang 61 low resistivity reservoir of Chuan 46 well block in Chuankou oilfield based on rocks physics research.Researches show that Chang 61 reservoir is characterized as thin layers, fine granularity, high bound water saturation, high salinity formation water and high shale content, which are the main control factors.Furthermore,high radioactivie sandstone and invasion of drilling fluid behave relatively low resistivity.

关 键 词：低阻油层 成因机理 控制因素 川口油区 

分 类 号：P618.13[天文地球—矿床学]