摘要
页岩气作为新兴的重要非常规天然气资源,常规的油气评价体系已不能准确地评价其资源潜力。该文旨在探索海相页岩气资源潜力评价方法体系。以湘中地区下石炭统大塘阶测水段海相页岩层系为例,重点阐述非常规页岩气资源潜力体积法评价所涉及的参数选取原则,通过离散型参数条件概率分析其期望值,逐个选取评价参数。获得了大塘阶测水段页岩层系在条件概率分别为5%、25%、50%、75%、95%时的面积、厚度、总孔隙度、游离含气饱和度、吸附含气量、有机碳含量等11个参数值。初步估算了大塘阶测水段页岩气资源潜力。
As a new emerging type of nature gas,shale gas resources can not be evaluated by the existing conventional hydrocarbon evaluation methods.This paper aims to explore the evaluation methods of the marine shale gas resource potential.Taking the shale in Lower Carboniferous Datang Stage for example,it mainly expounds the principle of key parameter selection involved by the unconventional shale gas resource potential volume method.The key parameters are selected one by one and analyzes the expected value through the discrete data conditional probability.The research obtains 11 key parameters of the shale in Datang Stage with the conditional probability of 5%,25%,50%,75%,95%.They are the area,thickness,total porosity,free-gas saturation,absorbed gas content,TOC,etc..The resource potentialities of the shale in Datang Stage is preliminary estimated.
出处
《成都理工大学学报(自然科学版)》
CAS
CSCD
北大核心
2012年第2期223-230,共8页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
国土资源部全国油气资源战略选区调查与评价专项(2009GYXQ15)
关键词
页岩气
海相页岩层系
资源潜力
评价方法
湘中地区
shale gas
series of marine shale strata
resource potentiality
evaluation method
Central Hunan