大庆石油学院学报2012，Vol.36Issue(3)：79-85,7.
非均质各向异性油藏水平井流入动态
摘要
Abstract
The process of oil recovery with horizontal wells is a coupling process of reservoir flow and wellbore variable-mass flow. The influence of reservoir heterogeneity cannot be ignored. A fully coupled reservoir/wellbore model for horizontal wells in heterogeneous, anisotropic reservoirs is developed. The heterogeneous permeability field is represented by a homogenous permeability field of equivalent permeability with a heterogeneity skin varying along the well. On this basis, the solution for the reservoir flow model is obtained by source function method and superposition principles. The solution methodology based on model discretization is presented. The inflow performance of horizontal wells in heterogeneous reservoirs is studied. Permeability heterogeneity has a great impact on flux profile and productivity of horizontal wells. The flux distribution along the well is basically the same as the near-permeability distribution. The flux in high permeability zone is bigger than that in low-permeability zone. Equivalent permeability being the same, with the increase of near-well heterogeneity, the average productivity of horizontal wells decreases, while the average unbalance of flux distribution increases. This study provides a theoretical basis for the productivity prediction and completion optimization of horizontal wells in heterogeneous, anisotropic reservoirs.关键词
非均质性/各向异性/油藏/水平井/耦合模型/渗透率场/源函数法/势的叠加原理/采油指数/不均衡因数/流量分布/等效渗透率Key words
heterogeneity/ anisotropy/ reservoir/ horizontal well/ coupling model/ permeability/ source function method/ superposition principle/ productivity index/ unbalance factor/ flux distribution/ equivalent permeability分类
石油、天然气工程引用本文复制引用
王海静,薛世峰,高存法,仝兴华..非均质各向异性油藏水平井流入动态[J].大庆石油学院学报,2012,36(3):79-85,7.基金项目
国家科技重大专项(2008ZX05031-02-03) （2008ZX05031-02-03）
