油藏启动压力的规律研究与应用  

The Study and Application of Reservoir Start-up Pressure

作　　者：孙黎娟[1] 吴凡[1] 赵卫华[1] 赵良君 

机构地区：[1]中原石油勘探局勘探开发科学研究院,河南省濮阳市457001

出　　处：《断块油气田》1998年第5期30-33,共4页Fault-Block Oil & Gas Field

摘　　要：目的：低渗油藏具有启动压力现象而使渗流不遵循达西定律，研究油藏启动压力规律，能更好地进行油藏开发设计和油藏开发动态分析。方法：利用渗流理论进行研究和推导，同时结合室内试验资料进行验证。结果：研究表明，油藏的启动压力梯度与其液体的流度呈双曲反比例关系，二者的乘积为一常数，该常数仅与油层及通过的液体有关；建立了相应的表达式，并简单介绍了在油藏中的具体应用。结论：该规律为进行油藏开发层系的划分、井网部署及已开发油藏层间动用状况等研究提供了一种新的理论方法和工具。Purpose Reservoirs with the low permeability have the Start-up pressure, so that seepage flows do not obey the Darcy's law. Study of the law of reservoir start-up pressure can be useful for the planning of reservoir development and the performance analysis of reservoir development. Method Based on the theory of seepage flow to study and deduce the law of reservoir start-up pressure, and then verify it with the laboratory data. Result The relations between grade of reservoir start-up pressure and the liquid mobility through it is under inverse proportional and hyperbolic function, which multiplying product is a contant. This constant is only relevant to the pay zones and the liquid quality through it. The formula of them has been built up and the application of the formula has been introduced in this paper. Conclusion This law offers the new theory and method for the division of developing formation, disposition of well pattern and the research of the interlayer producing status of reservoirs.

关 键 词：油田开发 启动压力 油水渗流 

分 类 号：TE312[石油与天然气工程—油气田开发工程]