摘要
储层内流体势是判定油气运移的重要依据。主要分析了东营凹陷内地层水的矿化度和水型的分布规律,指出其与油藏圈闭保存条件密切相关。异常高压是油气运移的重要动力,是流体势大小的重要指标,高势区的部位往往是油气源区,可以提供流体运移的动力,油气运移由高势点向低势点运移。通过对流体势低势区的分析,可以预测有利的油气聚集区,东营凹陷由此形成油气藏围绕主要生烃中心呈“环带状”分布的格局。利用地层水化学变化规律和地层压力变化趋势可以判断油气运聚方向。
Fluid potential within the reservoir is an important basis for the determination of hydrocarbon migration.This study analyzed the distribution rule of distribution of salinity and water type of formation water in Dongying Sag,pointing out that it is closely related to the reservoir traps storage conditions.Sub-sag internal pressure coefficient is high in flat areas and decreased in slope areas.Abnormal high pressure is an important driving force for hydrocarbon migration.It is also an important indicator of the size of the fluid potential.The high potential area is often the source of oil and gas.It can provide driving force for fluid migration which goes from high potential point to low potential point.By analyzing the low fluid potential area,we can predict favorable hydrocarbon accumulation area.Dongying Sag thus formed reservoirs with an“annular strip”distribution pattern around the hydrocarbon generation center.
作者
毛振强
Mao Zhenqiang(Chunliang Oil Production Plant,Sinopec Shengli Oilfield Company,Boxing 256504)
出处
《石化技术》
CAS
2023年第12期144-147,共4页
Petrochemical Industry Technology
关键词
地层水
地层压力
流体势
运移方向
油气成藏
东营凹陷
formation water
Formation pressure
Abnormal high pressure
Fluid potential
Migration direction
Hydrocarbon accumulation
Dongying Sag
