摘要
中国页岩气勘探开发持续、快速升温,建立页岩气的评价标准及具体的地质选区评价方法是勘探开发的前提和基础。有利区的优选可为进一步勘探决策和深化研究提供重要的依据。通过参考大量国外页岩气勘探开发实例,总结了页岩气的主要地质特点,并从页岩的生气能力、储气能力、易开采性3方面,结合国外页岩气开发实践及地质地球化学参数和国内盆地的具体地质实际,筛选并界定了6项地质选区评价参数,建立了评价参数分级的标准。利用该评价标准,在某地区进行了地质选区评价方法的应用模拟,从而提出了相关地质选区评价程序和具体评价步骤。系统归纳了国内外常用页岩气资源潜力定量计算方法,结合中国地质背景的复杂性和页岩气勘探开发程度较低的现状,建议根据区块页岩资料掌握情况,综合利用类比法和容积法估算资源量。
With the quickening step of China's shale gas exploration and development,the establishment of evaluation criteria of shale gas and the evaluation method of specific geological constituencies has become the prerequisite and foundation of exploration and development.The optimization of favorable area can provide an important basis for further decision-making of the exploration and further study.According to a large number of foreign shale gas exploration and development cases,the main geological characteristics of shale gas are summarized.Based on the shale gas development practice of foreign countries,geological and geochemical parameters and the specific geological conditions of domestic basins,six evaluating parameters for selecting favorable shale gas area are optimized according to their generating capacities,storage capacities and easy exploitations.At the same time,the evaluating index is defined,and the grading standards are established.Meanwhile,a simulation of the application of the evaluation method in selecting the favorable geological zones has been carried out in a certain region of a basin.Finally,the common quantitative calculation methods of shale gas potential are summarized systematically.Considering the complex geological backgrounds of China and the status that shale gas is less explored and developed,the analogy method and volume method are recommended to be used comprehensively to calculate the resources.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第2期28-34,8-9,共7页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
页岩气
地质选区
页岩资源量
页岩气评价参数
页岩气评价标准
shale gas
geological regional selection
shale gas resources volume
shale gas evaluating index
shale gas evaluating criteria
