摘要
涪陵区块地处中扬子板块西部,综合测录井及岩屑、岩心室内分析化验资料研究结果表明,涪陵区块龙马溪组—五峰组海相页岩层岩性主要为灰黑色粉砂质泥岩;储层厚度大,有机碳含量高,镜质体反射率与脆性矿物含量适中;储层低孔特低渗,纳米级孔隙发育,微裂缝较发育;天然气以甲烷为主,不含硫化氢;深水陆棚沉积环境优越,页岩气层存在明显异常高压。研究结论对于涪陵区块页岩气勘探开发产能建设,以及国内页岩气勘探具有重要指导作用。
Logging,cutting and laboratory core test data are used in the study for the Fuling block in the west of the middle Yangtze plate. The results show that,in the Fuling block,Longmaxi-Wufeng marine shale plays mainly contain grayish-black silty mudstone; reservoir is very thick,with high organic carbon content,and moderate vitrinite reflectance and brittle mineral content; the low porosity and ultra-low permeability reservoir has nano-scale pores and microfractures; natural gas is dominated by methane, without hydrogen sulfide; in the favorable shelf sedimentary environment of deep water,shale gas plays feature obviously abnormal high pressure. These conclusions are instructive for exploration and development of shale gas in the Fuling block,and even the shale gas exploration throughout China.
出处
《特种油气藏》
CAS
CSCD
北大核心
2013年第6期15-19,141,共5页
Special Oil & Gas Reservoirs
基金
中石化工程先导项目"页岩油气藏矿物录井定量分析技术"(SG12068)
中石油先导项目"江汉探区页岩油气资源评价测井方法研究"(G0605-12-ZS-0002)
关键词
中扬子地区
涪陵区块
海相页岩气
特征
middle Yangtze area
Fuling block
marine shale gas
characteristics
