摘要
结合压裂工艺参数，建立了描述体积压裂人工缝网的裂缝分布模型，研究不同裂缝分布模式下的近井渗流场特征及生产动态，为研究注水开发井网的水窜方向、制定各井的调整对策提供指导。人工缝网主要有3种模型：纺锤形缝网、均匀形缝网、哑铃形缝网。其中，纺锤形缝网最有利于注采单元开发；大规模的均匀形缝网有利于准自然能量开发和水吞吐开发；哑铃形缝网适合进行二次压裂改造。
Combined with the fracturing parameters, the authors set up a fracture distribution model of artificial fissures network to describe the tridimensional fracturing （fissure-network-formed fracturing）. Percolation field characteristics near wellbore and production performance are studied under different fracture distribution patterns. It provides guidance for researching the water channeling direction of water-flooding well pattern and formulating the adjustment strategies of each well. The artificial fractures network has mainly three models of fusiform, uniform and dumbbell-shaped ones. The fusiform network was the most conducive to development of flooding-pro- ducing units; Massive uniform form network is conducive to quasi-natural energy development and water puff-and-huff development. Dumbbell-shape network is suitable for the secondary fracturing stimulation.
关键词
致密油
体积压裂
缝网模型
tight oil
tridimensional fracturing
fissures network model
