摘要
为了准确评价涪陵页岩气田地质与工程“双优”储层,首先定性分析了气田试气资料与地质、工程评价参数的关系,并采用欧式距离方法聚类分析了各评价参数的重要程度,优选出评价优质储层的地质和工程参数;然后,选择岩心化验分析资料和测井资料,采用“岩心刻度测井技术”建立了地质与工程“双优”储层的测井评价模型;最后,利用产气剖面测试资料,运用灰度关联理论确定“双优”储层评价参数的权重,计算页岩气储层地质和工程指数,进而建立“双优”储层综合评价图版,形成了页岩气地质与工程“双优”储层测井综合评价方法。利用该方法计算了涪陵页岩气田平桥区块28口井储层的综合评价指数,结果表明,页岩气储层单段和单井产量与综合评价指数、双优储层穿行长度具有明显的正相关关系。这表明,可以用构建的页岩气地质与工程“双优”储层综合测井评价方法评价页岩气储层,为页岩气水平井设计和分段压裂提供依据。
In order to evaluate the“2X excellence”reservoirs in geology and engineering in Fuling Shale Gas Field with high quality and accuracy,the relationship between well testing data and geological/engineering evaluation parameters in the gas field was qualitatively analyzed,and then the geological/engineering parameters were selected through the European distance-squared systematic clustering method.On the basis of core test analysis data and logging data of the gas field,the logging evaluation model of geological and engineering“2X excellence”reservoir was established by using core calibration logging technology.Finally,the shale gas reservoir geological index and engineering index were calculated to establish the comprehensive evaluation chart of“2X excellence”reservoir by combining the gas producing profile logging data and using the gray correlation theory in the gas field,so as to determine the weight of the“2X excellence”reservoir parameters for production evaluation,forming the comprehensive evaluation method of such reservoir in shale gas geology and engineering.The comprehensive evaluation index of 28 wells in the Pingqiao Block of the Fuling Shale Gas Field has been evaluated by this method,and showed that the production of a single section and a single well of shale gas possessing a significant positive correlation with the comprehensive evaluation index and the crossing length in“2X Excellence”reservoir,which indicates that the shale gas reservoir could be evaluated by the proposed comprehensive logging evaluation method of shale gas geological and engineering the“2X Excellence”reservoir,and provide basis for shale gas horizontal well design and staged fracturing.
作者
陈四平
谭判
石文睿
赵红燕
CHEN Siping;TAN Pan;SHI Wenrui;ZHAO Hongyan(Sinopec Jianghan Oilfield Service Corporation,Qianjiang,Hubei,433124,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(Southwest Petroleum University),Chengdu,Sichuan,610500,China)
出处
《石油钻探技术》
CAS
CSCD
北大核心
2020年第4期131-138,共8页
Petroleum Drilling Techniques
基金
国家科技重大专项“深层页岩气开发关键装备与工具应用”(编号:2016ZX05038-006)
中国石化集团科研项目“涪陵页岩气优质储层测录井精细评价及应用”(编号:JP17033)资助。
关键词
页岩气
地质与工程
“双优”储层
测井评价
涪陵页岩气田
shale gas
geology and engineering
“2X Excellence”reservoir
logging evaluation
Fuling Shale Gas Field
