油藏隔离工艺技术在东海压力混合低渗储层勘探开发一体化作业中的应用

The application of the zonal isolation technology for exploration and development integration in a well which has multiple pay zones with different pressure and low permeability in the East China Sea

为了对不同压力系数的地层进行常规测试并对高压层进行有效封隔,解决探井评价后能够有效转入开发生产井的问题,提出了油藏隔离阀与常规测试工艺联作测试的油藏隔离工艺技术,并对该技术的隔离工具、测试管柱、工艺技术特点及施工要点进行了分析。该技术已在东海某油田A井压力混合低渗储层勘探开发一体化作业中取得成功应用,可为类似储层的勘探、开发提供借鉴。

In order to conduct well testing in different pressure coefficient formation and isolate high pressure formation, and also to convert the exploratory wells into production wells effectively after evaluation, the paper puts forward the reservoirs isolation technology which combines the reservoirs isolation valve with con- ventional testing technology, then analyze the isolation tools, test string, technical features and operation key points of the new technology. This technology has been applied successfully in exploration and devel- opment integration in a well which has several pay zones with different pressure and low permeability in the East China Sea. In addition, the successful practice can be a reference for the exploration and development in similar reservoirs.