塔河油田AT1井区三叠系中油组储层特征精细描述

Fine description of reservoir characteristics of Triassic middle oil-group, well AT1, Tahe Oil Field

贾星亮 胡梅 马冬晨

Jia Xingliang Hu Mei Ma Dongchen

中国石化 西北油田分公司 勘探开发研究院,乌鲁木齐 830011

Research Institute of Petroleum Exploration & Production, SINOPEC Northwest Company, Urumqi, Xinjiang 830011, China

以塔河油田AT1井区三叠系中油组为例,通过多项实验手段对其主产油层段的物性、岩石学、孔隙结构特征等进行了细致分析,认为该区中油组被泥质夹层分割为2套具有较完整鲍马沉积序列的储集层,厚度分别为7m和9m,储油孔隙半径范围为5~20μm;储集层可能存在速度敏感、酸性敏感、碱性敏感等潜在伤害;以多项实验手段分析得出了该储集体不同阶段渗流特征和可开采量。

Taking the Triassic middle oil-group of well AT1 in the Tahe Oil Field as example, the physical property, lithology and pore structure features of the main oil-producing reservoir were delicately described through multiple experimen tmeans. The middle oil-group in the region is divided into 2 sets of reservoir (7 and 9 mthick, respectively, oil storage pore ratioof 5-20μm) with relatively complete Bouma sedimentary sequence by mud interbed. Potential damages such as speed, acid and alkalinity sensitivities might exist inreservoir. Permeability features and exploitation quantity of the reservoir during different stages were proposed through experiments.