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大庆油田是多油层非均质油田,在注水开发过程中,做好分层压力监测对于提高油田开发效果具有重要意义。油层压力监测和控制在油田开发的整个过程中占有重要的地位,它是反映油藏驱动能量大小及分布的重要指标,在实施有效的油藏管理过程中发挥重要作用。压力监测的主要技术方法是压力恢复测试,目前的常规恢复测试技术只能取得油水井的笼统地层压力,无法取得分层段地层压力。笼统地层压力是各层压力的综合结果,是井下各层之间的流动状态达到动态平衡的最终表现。随着油田开发程度的不断深入,层间矛盾日益突出,解决这些矛盾的关键在于了解各个开发层段的地层压力状况,这是常规笼统压力恢复测试无法做到的,因而把分层测压技术投入到开发中势在必行。结合萨中开发区的实际,2002年选取部分长期关井的油井进行分层测压,充分发挥动态监测资料在油田开发中的作用。
Daqing Oilfield is a multi-layer heterogeneous oil field. During the development of waterflooding, monitoring the stratified pressure well is of great significance for improving the oilfield development effect. Reservoir pressure monitoring and control occupy an important position in the whole process of oilfield development. It is an important index reflecting the size and distribution of reservoir-driven energy and plays an important role in implementing effective reservoir management. Pressure monitoring is the main technical method of pressure recovery test, the current conventional recovery test can only get the oil and water wells general formation pressure, unable to obtain stratified layer pressure. General formation pressure is a comprehensive result of all layers of pressure and is the ultimate manifestation of the dynamic balance between the flow conditions of all layers downhole. With the deepening of the development of oilfields and the increasingly prominent contradictions between layers, the key to solving these contradictions lies in understanding the formation pressure of various development intervals, which can not be achieved by the conventional general stress recovery test. Therefore, stratified manometry Put into development is imperative. According to the actual situation in Sazhong Development Zone, some oil wells with long-term shut-in were selected for stratified pressure measurement in 2002, giving full play to the role of dynamic monitoring data in oilfield development.