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最近几年来由于地面地震方法的质量和可靠性的改善,因而储层分析工作中可以应用遥测数据对某些储层类型中的有关烃类饱和度的变化做出正确推断。许多著者报道了稠油地区监测蒸汽驱和火驱技术的成就。近来一些文献还提到在探测近海油田开采期间的气顶移动和在提高采收率期间观测注入C0_2的推进情况方面取得的成绩。本文描述了一个采用重复地震观测来监视油层注水推进情况的油田实验结果。储层及其流体理论分析预示,地震方法能精确地观测因饱和流体的改变而引起的期望反射振幅变化。
In recent years, due to the improved quality and reliability of surface seismic methods, telemetry data can be used in reservoir analysis to correctly infer changes in hydrocarbon saturation in selected reservoir types. Many authors have reported achievements in monitoring heavy oil fields for steam flooding and fire flooding. Some recent literature also refers to the achievements made in the exploration of the gas cap movement during the exploration of offshore oilfields and the observation of the progress of CO2 injection during oil recovery. This article describes a field experiment that uses repeated seismic observations to monitor oilfield waterflooding. Theoretical analysis of reservoirs and their fluids indicates that the seismic method can accurately observe the expected reflection amplitude change caused by the change of saturated fluid.