川西新都气田上侏罗统蓬莱镇组气藏储层特征

详细信息

The gas reservoirs in the Upper Jurassic Penglaizhen Formation in the Xindu gas field, western Sichuan

Research Institute of Petroleum Exploration and Development, Southwest China Branch, SINOPEC, Chengdu 610081, Sichuan, China

摘要: 新都气田蓬莱镇组气藏是由多套含气砂体组合而成的工业性气藏,河口坝为其最有利沉积微相,储层岩性以细粒岩屑砂岩、细粒岩屑石英砂岩为主,岩性较为致密,以中-低孔渗为主。含气地震响应模式为"低频、强振幅、低阻抗";测井信息反映储层具有"二高三低"特征。
- 上侏罗统 /
- 蓬莱镇组 /
- 气藏 /
- 储层 /
- 新都气田 /
- 四川
Abstract: The gas pools in the Upper Jurassic Penglaizhen Formation in the Xindu gas field, western Sichuan are believed to be the industrial gas pools consisting of a number of gas-bearing sandstone bodies. The favourable sedimentary microfacies is represented by channel mouth bar and submarine fan bar sandstones. The lithologies comprise fine-grained lithic sandstones and lithic quartz sandstones, which are relatively densed, with moderate to low porosity and permeability. The seismic response model for the gas-bearing sandstones displays the features of low frequency, high amplitude and low impedance, and the well-logs for the gas reservoirs exhibit the electrical properties of high AC, high resistance, low natural gamma-ray log, low neutron log and low density.
- Upper Jurassic /
- Penglaizhen Formation /
- gas pool /
- reservoir rock /
- Xindu gas field /
- Sichuan