塔河油田奥陶系碳酸盐岩储层流体包裹体研究

Fluid inclusion study of the Ordovician carbonate rock reservoir in the Tahe Oilfield

本文在充分收集整理前人研究资料和成果的基础上,以流体包裹体技术方法为主要研究手段,展开对塔河油田流体包裹体研究,结果表明:所研究储层流体包裹体主要分为H2O包裹体、有机质包裹体、有机质-H2O包裹体3类;塔河油田奥陶系储层经历过5期热流体活动;得出3个盐度值;流体密度变化范围从0.90～1.15g/cm3;系统阐述了塔河油田奥陶系碳酸盐岩流体包裹体在成岩环境、高温热水作用、低温多旋回、油气成熟度及油气充注等多方面的应用。

This paper studied the characteristics of fluid inclusions,based on technical methods of fluid inclusions and a lot of information and previous results obtained in the Tahe Oilfield.The results show that the fluid inclusions can be broadly divided into H2O inclusions,organic matter inclusions,and organic matter-H2O inclusions.The Ordovician reservoir of the Tahe Oilfield experienced five times of thermal fluid activities corresponding to four times of petroleum charging and one time of gas charging;three different salinity values were obtained;fluid density varies in the range of 0.90～1.15 g/cm3.This paper systematically elaborated fluid inclusions in Ordovician carbonate rocks of the Tahe Oilfield,pointing out the application of fluid inclusions in such aspects as the diagenetic environment,the function of high-temperature hot water,the low temperature multi-cycles,the oil gas maturity and the oil gas charge.