萍乐坳陷中部GFD1井页岩气富集模式

doi:10.13278/j.cnki.jjuese.20190114

Abstract

Abstract: In order to investigate the potential of oil and gas resources of Upper Permian Leping Formation in Pingle depression, the well GFD1 was deployed to prospect shale gas, coal bed gas, and tight sandstone gas in Qujiang syncline in Fengcheng area, in central Jiangxi Province. The shale gas enrichment model was studied based on the data of drilling, organic geochemistry, petrological parameter, and gas-bearing characteristics, etc. The type of organic matter is mainly type Ⅱ₂-Ⅲ. The total organic carbon (TOC) content in Wangpanli Member and Laoshan Member is sufficient with high-maturity. The average brittle mineral mass percent is 34.84%, which is prone to later fracturing. The high logging of total hydrocarbon indicates that the gas is rich in this syncline. The field desorption shows that the coal bed gas is more than 1.00 m³/t, with an average of 3.54 m³/t, the shale gas content varies between 0.10 and 1.50 m³/t, with an average of 0.54 m³/t, and the tight sandstone gas is lower than 0.30 m³/t. The structure of the north side of Qujiang syncline is normal, while the south side is a reverse fault, which is benefitial for oil and gas sealing.

Key words: Pingle depression, Leping Formation, shale gas, enrichment model

CLC Number:

TE122

Teng Long, Shen Xuehua, Fang Chaogang, Zheng Hongjun, Zhu Yingxin. Shale Gas Enrichment Model of Well GFD1 in Middle Pingle Depression, Jiangxi Province[J].Journal of Jilin University(Earth Science Edition), 2020, 50(3): 757-767.

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Shale Gas Enrichment Model of Well GFD1 in Middle Pingle Depression, Jiangxi Province

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