特种油气藏2018，Vol.25Issue(2)：116-119,4.DOI:10.3969/j.issn.1006-6535.2018.02.023
海上高含水期油田细分层系技术界限研究
Technical Boundaries of Reservoir Subdivision in Offshore Oilfield with High Water-Cut
摘要
Abstract
Reservoir subdivision is usually conducted in offshore oilfield with high water-cut due to the limitation of platform and development investment.According to the theoretical and field productivity test,the interlayer interfer-ence in multi-layer production oilfield with high water-cut is not only influenced by longitudinal heterogeneity but also more affected by the pressures,water content and other aspects of different longitudinal layers.Due to the limit-ed researches on the quantitative characterization and reservoir subdivision boundaries of interlayer interference in high water-cut stage,a concept of interlayer dynamic interference is proposed based on the dynamic and static fac-tors of interlayer interference. In addition,a mathematical model is established to quantitatively characterize the in-terlay dynamic reference coefficient by using seepage theories. The quantitative relations between dynamic interfer-ence coefficient and permeabilities,water-cuts and pressures of different longitudinal layers are gained for multi-layer production sandstone oil reservoir with high water-cut. The corresponding technical boundaries of reservoir subdivision for high water-cut oil reservoir is proposed by combining with numerical simulation:the permeability contrast is less than 5.0,water-cut contrast is less than 1.7 and the pressure contrast is less than 1.6. The pilot test is carried out in the Bohai SZ Oilfield with high water-cut based on this research and the technical boundaries of reservoir subdivision is used to develop a reasonable subdivision and combination pattern. After reservoir subdivi-sion in the pilot test area,the relative average daily oil increment is up to 20%,the water-cut is reduced by 10 Persentage Points. This research could provide a reference for the quantitative characterization of interlayer conflicts and countermeasure development for the offshore oilfield with high water-cut.关键词
海上油田/高含水期/多层合采/层间动态干扰/细分层系界限/渤海SZ油田Key words
offshore oilfield/high water-cut stage/multi-layer production/inter-layer interference/technical boundaries of reservoir subdivision/Bohai SZ Oilfield分类
能源科技引用本文复制引用
邓景夫,李云鹏,贾晓飞,张国浩,王公昌..海上高含水期油田细分层系技术界限研究[J].特种油气藏,2018,25(2):116-119,4.基金项目
"十三五"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) （2016ZX05058001）
