基于流管法的水平井组开发指标预测模型及应用  

Development index prediction model and application of horizontal well group based on stream-tube method

作　　者：李文忠 江远鹏 段宇 常会江 吴晓慧 LI Wenzhong;JIANG Yuanpeng;DUAN Yu;CHANG Huijiang;WU Xiaohui(Tianjin Branch of CNOOC(China)Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《石油化工应用》2023年第9期19-24,38,共7页Petrochemical Industry Application

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”项目(2016ZX05058001)。

摘　　要：精细油藏动态分析的研究尺度已经达到井组级别。经典的油藏数值模拟方法侧重整体研究,对井组尺度的研究精度和灵活性不足。为了精细分析井组尺度的开发指标,基于流管法建立了水平井组开发指标预测模型。通过流管渗透率、流管体积和流管长度描述了井间非均质性、井控储量、井距等关键参数。基于Buckley-Leverett水驱油理论,对流管法模型进行了求解。模型应用结果表明:(1)对比模型计算结果和ECLIPSE模型计算结果,两者误差小于5%,证实了模型计算的准确性;(2)以井组地质油藏和生产数据为输入数据,求取的开发曲线可作为井组开发的理论曲线,实际井组的开发曲线与理论曲线偏差较大的井组,意味着地质油藏认识与油藏实际情况存在较大偏差,需要修正认识。该模型对加深地质油藏认识,指导油田生产具有很好的理论意义和实用价值。The research scale of fine reservoir dynamic analysis has reached well group scale.The classical method of reservoir numerical simulation focuses on the scale of whole reservoir,besides the modeling and numerical simulation of well groups are time-costing jobs.In order to study the development process of well groups,a prediction model of development index of horizontal well group was put forward based on stream-tube method.The key parameters such as heterogeneity between wells,well controlled reserves and well spacing were described by permeability,volume and length of stream-tube.The model was solved based on Buckley-Leverett water-flood theory.The results showed that,(1)the error between the model results and ECLIPSE was less than 5%.This proved the reliability of the model.(2)The development curve calculated by the model using the geological and production data of actual well group could be used as theoretical curve of well group development.If the deviations between the actual development curve and the theoretical curve were large,this means the understanding of the geological reservoir was insufficient and needed to be further studied.The model is of great theoretical and practical value to deepen the understanding of geological reservoir and guide the production of oilfield.

关 键 词：水平井 流管法 威布尔分布 非均质性 井控储量 井距 开发指标 

分 类 号：TE319[石油与天然气工程—油气田开发工程]