摘要
建立完善的页岩气储层评价体系对指导非常规页岩气勘探开发具有重要意义。根据昭通地区五峰组-龙马溪组常规测井资料,构建页岩气储层关键参数地质评价模型;采用层次分析法完成页岩气储层的可压性计算,并建立基于可压性分级的储层工程评价模型;然后结合地质评价与工程评价双重因素,构建页岩气储层综合评价模型,并利用实测压裂射孔资料进行验证分析。结果表明,综合评价较好的Ⅰ类储层产气量较高;采取水平井分段分簇设计,可达到提高压裂产能效率的目的。所构建的储层综合评价模型能够系统而有效地开展对页岩气储层的评价,可为昭通地区页岩气储层勘探提供借鉴。
A sound shale gas reservoir evaluation system is important for guiding unconventional shale gas exploration and development.Based on conventional logging data from Wufeng-Longmaxi Formation in Zhaotong area,a geological evaluation model for key parameters of shale gas reservoirs is constructed.The compressibility of shale gas reservoir is calculated by the analytic hierarchy process(AHP),and the reservoir engineering evaluation model based on the compressibility classification is established.Then,combined with geological evaluation and engineering evaluation,a comprehensive evaluation model of shale gas reservoir is constructed,and the actual fracturing perforation data is used to verify and analyze.The results indicate that ClassⅠreservoirs with better evaluation have higher gas production.Adopting a segmented and clustered design for horizontal wells can improve fracturing productivity efficiency.The constructed reservoir comprehensive evaluation model can evaluate shale gas reservoirs,which provides a good reference for shale gas reservoirs exploration in Zhaotong area.
作者
熊康
张凤生
谭玉涵
XIONG Kang;ZHANG Fengsheng;TAN Yuhan(School of Earth Sciences and Engineering,Xi’an Shiyou University,Xi’an 710065,Shaanxi,China;Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi’an Shiyou University,Xi’an 710065,Shaanxi,China;CNPC Logging Co.,Ltd.,Xi’an 710077,Shaanxi,China)
出处
《石油地质与工程》
CAS
2024年第2期82-87,92,共7页
Petroleum Geology and Engineering
关键词
页岩气
地质评价
工程评价
评价参数
层次分析法
压裂射孔
shale gas
geological evaluation
engineering evaluation
evaluation parameters
analytic hierarchy process
fracturing perforation
