封隔器分层改造中隔层性质的研究

Study for Interlayer Property in Interlayer Change with Packer.

对含油层系多,跨距大,油水关系复杂,地层压力变化大的压裂井,由于射开砂组多、长井段合采,层间矛盾突出,使用封隔器分层压裂改造,能够达到一次作业压开全部产层的目的。选取有效的隔层,是保证该工艺成功的关键。经对两口井隔层条件与施工对比,分析了有效隔层和合理的压裂方案对取得施工成功的影响。

For fractured well of many oil layers contained, big span, complicated oil and water relationship and great change of earth stress, because of many percolated zones, commingled production in long segment and prominence of interlayer contradiction, the tech of inter-layer change with packer can reach the objective of pressing whole production layer by once operation. Selecting effective interlayer is the key point to ensure its success. By comparing requirement of interlayer and operation in two wells, the influence of effective interlayer and reasonable fracture plan to success of operation has been analyzed.