特种油气藏2024，Vol.31Issue(1)：57-65,9.DOI:10.3969/j.issn.1006-6535.2024.01.007
鱼骨型分支井SAGD分支形态优化及采出程度变化规律
Optimization of Lateral Morphology of SAGD Fishbone Multilateral Wells and Recovery Change Law
摘要
Abstract
Reservoir properties in Fengcheng oilfield are commonly poor,and their heterogenity is strong.SAGD fishbone multilateral wells can address the issue of limited steam chamber expansion of conventional SAGD by later-al penetrating deeply into the reservoir.In order to achieve the best development effect,it is necessary to optimize the lateral morphology of SAGD fishbone multilateral wells and grasp the law that affects the recovery variation.To this end,reservoir numerical simulation and orthogonal test design are used to determine the sensitivity of the lateral parameters to enhance oil recovery and optimize the lateral parameters.As a resunt,the influence of the lateral pa-rameters on enhanced oil recovery is analyzed in reservoirs with different physical properties.The research results are applied to Fengcheng Oilfield,and the optimal well deployment scheme for the target block is as follows:lateral length is 120 m,the number of laterals is 4,the angle of laterals is 75°,the laterals are asymmetrically distribu-ted,and the spacing between laterals are 100 m.The research showed that the influence weights of each lateral pa-rameter take the reservoir permeability of 2.0 D as the obvious cutoff point:the main influencing factors are lateral length,lateral angle,and lateral spacing when the reservoir permeability is less than 2.0 D,and the influence of lateral parameters on the increase of recovery,the impact of lateral angle and lateral spacing starts to become stron-ger when the reservoir permeability 2.0 D The Study results are of great significance for further enhanced oil recov-ery of the recovery of SAGD drive in Fengcheng Oilfield.关键词
鱼骨型分支井SAGD/分支形态优化/数值模拟/提高采收率/风城油田Key words
SAGD fishbone multilateral well/lateral morphology optimization/numerical simulation/enhanced oil recovery/Fengcheng Oilfield分类
能源科技引用本文复制引用
周志军,张祺,衣犀,唐佳琦,张国青..鱼骨型分支井SAGD分支形态优化及采出程度变化规律[J].特种油气藏,2024,31(1):57-65,9.基金项目
国家科技重大专项"低物性段改造酸化压裂技术研究"(2016ZX05012-002-006) （2016ZX05012-002-006）
黑龙江省博士后基金"基于强非均质性储层的稠油SAGD蒸汽腔扩展理论模型及机理研究"(LBH-Z23102) （LBH-Z23102）
