安83长7致密油藏水平井压裂缝网形态研究  

Research on tridimensional fissures network patterns in horizontal wells of tight Chang7 oil reservoirs of An83 block

作　　者：王平平[1] 陈章顺[1] 李超[1] 李秋德[1] 李红雷[1] 吴育鹏[1] 何文锶 张换果 

机构地区：[1]中国石油长庆油田分公司第六采油厂

出　　处：《低渗透油气田》2015年第2期79-82,69,共5页

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 

分 类 号：TE377[石油与天然气工程—油气田开发工程]