底水油藏水平井产能影响因素及经济界限研究  

Research on Influence Factors and Economic Limits of Horizontal Well Productivity in Bottom Water Reservoir

作　　者：陈楠 刘洪杰 魏焜 CHEN Nan;LIU Hongjie;WEI Kun(Pengbo Production Company,Tianjin Branch of CNOOC Ltd.,Tianjin 300450,China)

机构地区：[1]中海油天津分公司蓬勃作业公司,天津300450

出　　处：《重庆科技学院学报（自然科学版）》2019年第1期38-41,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项"大型油气田及煤层气开发"子课题"海上油田丛式井网整体加密及综合调整油藏工程技术示范"(10.3969/J.ISSN.1006-768X.2017.02.19)

摘　　要：以蓬莱油田薄层底水油藏为例,抽象出此类油藏的参数模型,根据正交试验设计原理,结合数模软件建立的概念模型,模拟不同方案的生产情况。根据因素分析结果确定各参数对水平井产能的影响程度,运用统计回归方法得到水平井累计产量公式。依据投入产出平衡原理得到对应井网形式的单井经济极限累计产油量,结合评价期末累计产油量回归公式得到经济极限参数图版。在选定的5个因素中,对研究区水平井开发效果的影响程度由大到小的排序为侧钻时机(剩余油饱和度)、原油黏度、油层有效厚度、垂向渗透率、无因次底水体积。Taking thin layer bottom water reservoir in Penglai oilfield as an example,a conceptual parameter model for such reservoirs is built.According to the principle of orthogonal test,the production of different plans is simulated based on the conceptual model with digital software.The influence degree of each parameter on horizontal well productivity is determined according to the result of factor analysis,and the cumulative production formula of horizontal wells is achieved by statistical regression method.According to the principle of input-output balance,the economic limit cumulative oil production of single well corresponding to well pattern is obtained,and combined with the regression formula of cumulative oil production at the end of evaluation period,the chart of economic limit parameters is also obtained.Among the 5 factors selected,the influence degree of horizontal well development effect in the study area is ranked from large to small:sidetracking time(remaining oil saturation),viscosity of crude oil,effective thickness of reservoir,vertical permeability and dimensionless bottom water volume.

关 键 词：薄层底水油藏 水平井 产能 经济极限产量 参数优化 正交试验 

分 类 号：TE341[石油与天然气工程—油气田开发工程]