摘要
在野外地质调查基础上,通过有机地化测试、物性研究和扫描电镜等方法,对鄂西鹤峰地区泥页岩储层及资源潜力进行了研究。结果表明:(1)鹤峰地区大隆组形成于台盆相,岩性以硅质页岩、炭质页岩为主,厚度为47.5~53.9 m。(2)目的层泥页岩具有“有机质丰度高、热演化程度高”等特征,TOC含量平均为6.03%,Ro平均为2.40%,脆性矿物含量平均为81.0%。(3)岩石中吸附气含量较高,质量体积平均为2.08 m^3/t,埋深小于2000 m,具有良好的勘探前景。(4)采用叠合法预测出鹤峰茅坪-石灰窑和鹤峰太平-咸盈一带为页岩气勘探有利区,用概率体积法估算页岩气地质资源量(P50)分别约为303.56×108 m^3和533.33×108 m^3。该研究成果可为鄂西鹤峰地区大隆组页岩气勘探提供借鉴。
On the basis of field geological investigation, the shale reservoir and resource potential in Hefeng area of Western Hubei Province have been studied by means of organic geochemistry, physical properties and scanning electron microscope. Results shows that:(1) the Dalong Formation in Hefeng area is formed in platform basin facies, and the lithology is mainly siliceous shale and carbonaceous shale, with a thickness of 47.5~ 53.9 m.(2) the target shale is characterized by high organic matter abundance and high thermal evolution.The average TOC(total carbon content) content is 6.03%, Ro content is 2.40%, and the average brittle mineral content is 81.0%.(3) the content of adsorbed gas in the rock is high, the average mass volume is 2.08 m3/t,and the buried depth is less than 2000 m, so it has a good exploration prospect.(4) it is predicted that the Maoping–Shihuiyao area in Hefeng County and Taiping-Xianying area in Hefeng County are favorable areas for shale gas exploration by superposition method, and the estimated geological resources of shale gas(P50) are about 303.56×108 m^3 and 533.33×108 m^3 respectively. The research results can be used for reference for shale gas exploration of Dalong Formation in Hefeng area, Western Hubei Province.
作者
王登
余江浩
陈威
周向辉
张焱林
许露露
周豹
冷双梁
黄佳琪
WANG Deng;YU Jiang-Hao;CHEN Wei;ZHOU Xiang-Hui;ZHANG Yan-Lin;XU Lu-Lu;ZHOU Bao;LENG Shuang-Liang;HUANG Jia-Qi(Hubei Geological Survey,Wuhan 430034,Hubei,China;No.4 Geological Brigade,Hubei Geological Bureau,Xianning 437100,Hubei,China)
出处
《华南地质与矿产》
CAS
2020年第1期9-18,共10页
Geology and Mineral Resources of South China
基金
湖北省地勘基金项目“湖北省页岩气资源潜力评价”(编号:DKC2014-03-04)
“湖北省页岩气勘查区块评价优选”(编号:DKC2017-04-01)
中国地质调查局“中南地区页岩气资源调查评价”项目下设子项目(编号:12120114049901)联合资助。
关键词
资源潜力
储层特征
泥页岩
大隆组
鹤峰地区
鄂西
resource potential
reservoir characteristics
shale rock
Dalong Formation
Hefeng area
Western Hubei Province
