贝301区块南二段岩性识别方法  

Lithology identification method of the second section of Block 301

作　　者：程梦薇[1] 卢艳[1] 张春露[1] Cheng Mengwei;Lu Yan;Zhang Chunlu

机构地区：[1]大庆油田有限责任公司勘探开发研究院

出　　处：《国外测井技术》2024年第4期51-54,2,共5页World Well Logging Technology

摘　　要：贝301区块南屯组二段地层岩性复杂多样,以砂岩、砂砾岩为主,通过测井响应特征分析发现在物性相同的情况下,砂砾岩电阻率比砂岩电阻率高很多,说明不同岩性对测井曲线影响较大,岩性识别是油气藏储层评价的基础,因此有必要先对岩性进行识别。对该区块开展了不同油层组不同岩性的测井曲线响应特征分析,在将岩性简化大类后,优选对岩性反应敏感的测井曲线,首先将储层和非储层识别出来,再利用组合参数识别砂岩和砂砾岩,确定了不同油层组的岩性识别方法。此方法精度高,达到了项目要求,为下步进行参数建模和水淹解释奠定了扎实基础。301 block south tun group formation lithology complex,mainly sandstone,conglomerate,through logging response characteristics analysis in the case of the physical property of the same,sand gravel resistivity is much higher than the sandstone resistivity,that different lithology on the logging curve,lithology identification is the basis of reservoir evaluation,so it is necessary to identify the lithology first.The response characteristics of different lithology of different oil layer groups were analyzed in this block.After simplifying the lithology,the logging curve sensitive to lithology reaction was preferred.First,the reservoirs and non-reservoirs were identified,and the combined parameters were identified,and the lithology identification method of different oil layer groups was determined.This method has high accuracy and meets the requirements of the project,which lays a solid foundation for the next parameter modeling and flooding interpretation.

关 键 词：岩性识别 测井响应特征 

分 类 号：P61[天文地球—矿床学]