摘要
火山岩岩性识别是岩相划分、储层综合评价与预测、井网部署、开发方案编制的基础。火山岩类型多,其岩性与岩石成分、结构、构造和成因有关,识别难度大。岩石力学参数中蕴藏着丰富的岩性表征信息,从多个方面提供了火山岩岩性识别的资料。以准噶尔盆地六九区石炭系火山岩为研究对象,在对工区内40块岩样进行岩石力学参数实验的基础上,优选出对火山岩岩性响应较为敏感的泊松比、杨氏模量、体积模量3个岩石力学参数,制作了岩性识别图版。同时,给出了利用测井资料计算泊松比、杨氏模量、体积模量的模型,进而实现了对研究区内火山岩岩性的逐点识别。识别结果表明,该法能够较准确地对火山岩岩性进行识别,识别率完全能够满足现场储层评价要求。
The lithology recognition of volcanic rocks is the foundation of the lithofacies division,reservoir synthetic evaluation and forecast,well pattern deployment and establishment of developing plan.Volcanic rocks have various types,their lithologies related to their ingredients and structures.So it is very difficult to recognize their lithologies.Mechanical parameters of rocks are rich in characterization of lithologic information,providing a lot of volcanic lithologic data.This paper takes the carboniferous volcanic rocks in Junggar Basin District-69 for example.The rock mechanic parameters of 40 core samples are tested in the area,and the Poisson's ratio,Young's modulus,bulk elasticity modulus which are very sensitive to the volcanic rock lithology are optimized.Based on the three parameters of rock mechanics the lithological identification plate is established.At the same time,the model of Poisson's ratio,Young's modulus,bulk elasticity modulus which are calculated by using logging data are given,so that the identification of lithology of the volcanic rocks in the work area are calculated point by point.The recognition result indicates that this method can recognize lithology accurately in this work area.The recognition rate is fully capable of meeting the requirements of reservoir evaluation.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第4期12-15,共4页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
岩石力学
火山岩
岩性
识别
测井
rock mechanics
volcanic rock
lithology
recognition
well logging
