海上疏松砂岩稠油油藏压裂充填优化设计

Optimization Design for Fracturing Pack of Loose Sandstone Heavy Oil Reservoir at Sea

建立了考虑疏松砂岩稠油油藏启动压力梯度、压力敏感性,以及裂缝导流能力失效性的压裂井数学模型,实现了该模型的数值求解。在防止地层出砂的前提下,对渤海湾某油田进行了压裂充填参数设计。研究表明,与不压裂相比,在该区块实施压裂充填改造在经济上是可行的,参数优化结果为该区开发方案设计提供了技术支撑。

Mathematical model of fractured well Considering the initial pressure gradient,pressure sensitivity,and the failure of fracture conductivity of the heavy oil reservoir with loose sandstone is established,,and numerical solution of this model is realized.Under basis of preventing the formation of sand,parameter for frac-pack of oil field in the Bohai bay is designed.Studies show that,compared with non-fracturing,operation of frac-pack on this block is feasible economically,result of parameter optimization provide the technical support for the development plan at this area.