基于耦合模型的射孔完井水平井入流剖面分析与优化  

Analysis and Optimization of Inflow Profile of Perforated Horizontal Well Based on Coupling Model

作　　者：姜立富 JIANG Lifu(Bohai Oil Field Research Institute,Tianjin Branch of CNOOC,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司渤海石油研究院,天津300459

出　　处：《重庆科技学院学报（自然科学版）》2021年第3期25-29,83,共6页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项“渤海油田加密调整及提高采收率油藏工程技术示范”(2016ZX05058001)。

摘　　要：水平井沿水平段入流剖面对其生产效果有重要影响。为便于分析多因素影响下的水平段入流剖面,建立了远井区域油藏渗流模型、分段近井非均质带及射孔带流动模型和井筒管流模型,通过耦合各模型压力与流量的关系,进行射孔完井水平井产能计算和入流剖面优化。基于河南油田M井的有关数据,计算分析了油藏参数和完井参数对入流剖面的影响。近井带渗透率非均质性导致入流剖面不均匀,局部射孔密度变化会产生分流作用而影响入流剖面。通过调整M井的射孔密度,水平段的最大入流量与最小入流量的比值从1.5减小到1.1,得到了接近理想状态的入流剖面。The inflow profile along the horizontal section of horizontal well has an important influence on its production effect.In order to analyze the inflow profile of horizontal section under the influence of multiple factors,the reservoir seepage model of far well area,the flow model of segmented near well heterogeneous zone and perforated zone and the wellbore pipe flow model are established.By coupling the relationship between pressure and flow rate of each model,the productivity calculation and inflow profile optimization of perforated completion horizontal well are carried out.Based on the relevant data of M well in Henan oilfield,the influence of reservoir parameters and completion parameters on inflow profile is calculated and analyzed.The results show that the heterogeneity of permeability near the wellbore leads to the non-uniformity of inflow profile,and the change of local perforation density would produce diversion effect and affect the inflow profile.By adjusting the perforation density of M well,the ratio of the maximum inflow rate to the minimum inflow rate in the horizontal section is reduced from 1.5 to 1.1,and the inflow profile close to the ideal state is obtained.

关 键 词：水平井 完井 入流剖面 射孔密度 

分 类 号：TE257[石油与天然气工程—油气井工程]