压后多层排液模型研究与应用  

The Calculation Model and Application of Multiple Layers Fluid Flowback after Fracturing

作　　者：李勇明[1] 岳迎春[1] 杜成良[1,2] 钟烨[1] 江有适[1] 毛虎[1] 

机构地区：[1]"油气藏地质及开发工程"国家重点实验室西南石油大学,四川成都610500 [2]渤海钻探油气井测试公司,河北廊坊065007

出　　处：《油气井测试》2010年第2期1-3,共3页Well Testing

基　　金：四川省应用基础研究项目(2007JY042);国家自然科学基金项目(50774064)资助

摘　　要：针对我国单井多层压裂技术应用日益普遍、压后多层排液理论十分缺乏的现状,建立了压后多层排液的计算模型。模型考虑返排过程中的气、水两相流动,根据气、液组分的物质平衡关系,建立了单层排液的数值模型;利用气液两相管流压降方程,依据排量叠加原理,得到压后多层排液的计算模型。通过计算,分析了渗透率、井底压力以及破胶液粘度对压后返排量的影响关系。该模型有利于丰富多层压裂设计理论、指导压后多层排液现场实施。Considering the increasingly widespread application of multiple layers fracturing technology and deficiency of multiple layers flowback theory,this paper establishes a new calculation model of multiple layers flowback.The model considers air-water two-phase flow,based on the material balance relationships of gas and fluid,establishes the monolayer flowback model;in use of the pressure drop equation of two phase pipe flow and displacement superposition principle,attain the calculation model of multiple layers flowback after fracturing.Through the calculation,this paper analyzes the effects of permeability,downhole pressure and viscosity of broken glue fluid on the flowback volume.The model is benefit for enriching the fracturing theories and instructing the field operation of multiple layers flowback.

关 键 词：压裂 多层排液 计算模型 影响因素 

分 类 号：TE353[石油与天然气工程—油气田开发工程]