永置式监测技术的研究与应用

RESEARCH AND APPLICATION OF PERMANENT DOWNHOLE SENSORS SYSTEM

油藏压力是油藏监测、动态分析最基础参数,如何测定油藏压力的变化并实时分析测得数据以确定油藏特性参数是油藏工程中最重要的任务之一。永置式监测系统能动态监测连续油藏压力变化及其响应。文章总结了井下毛细管压力监测系统、电子压力传感系统、光纤压力传感系统的优缺点及其在油田的应用前景,建立了解释测得压力数据的数学模型并进行求解,实际处理了渤海油田G16井和F16井的实测压力数据并得到了相关地层参数。研究表明,利用永置式监测系统和相应数据处理方法能对油藏进行动态管理、实时决策修改开发方案,对提高油田采收率具有重要意义。

Reservoir pressure is considered as the most basic parameter of reservoir surveillance and dynamic analysis.How to confirm the change of reservoir pressure and make real-time analysis and determine reservoir feature parameter is one of the most important tasks in reservoir engineering.Permanent downhole sensors system can monitor continuously the changes and response of reservoir pressure.This paper summarized the merits and disadvantages of observation systems of downhole capillary pressure,electronic sensory system and fiber sensing technology,and its application prospect in reservoir was also discussed on the basis of lots of literature investigations.The mathematics mode which explains measuring pressure date has been developed and measured data of G16 and F16 oil wells in Bohai Oilfield have been practically handled and relative formation parameters have been obtained.Relevant research indicated that the application of permanent observation system can manage dynamically the reservoir and real-time modify development program.Therefore it has significance for EOR.