石油钻采工艺2026，Vol.48Issue(2)：207-216,10.DOI:10.13639/j.odpt.202505032
超稠油蒸汽驱实施界限与转驱条件的数值模拟
Numerical simulation optimization study on the implementation boundary and conversion conditions of steam flooding for ultra heavy oil
摘要
Abstract
In response to the problems of continuous drop of periodic oil production and oil-steam ratio in the intermediary and later stage of cyclic steam stimulation development of ultra-heavy oil in Block Shu-1 in Liaohe Oilfield,it is urgent to transfer to steam flooding as alternative technology.Therefore,it is necessary to determine the implementation boundary and conversion conditions for steam flooding technology.However,due to the complex underground conditions and unique fluidity of ultra-heavy oil,precise field-scale numerical simulations are difficult to conduct.To address this challenge,based on the scaled physical simulation experiments of steam flooding using two-dimension sand packed model,CMG-STARS modulus was utilized to establish a small-scale numerical model,followed by upgrading to field-scale pursuant to similarity criteria.An inverted nine-spot pattern(70 m injector-producer distance)numerical model was established.Systematic simulations were carried out on the implementation boundaries of steam f looding,including crude oil viscosity,reservoir permeability,oil layer thickness,and permeability variation coefficient,as well as conversion conditions,such as inter-well temperature,number of cyclic steam stimulation cycles,and reservoir pressure.The results show that the implementation boundaries for steam flooding in this block are:crude oil viscosity less than 300 Pa·s,reservoir permeability greater than 500×10-3 μm2,permeability variation coefficient less than 0.5,and oil layer thickness less than 50 m.The optimal conversion conditions are:inter-well temperature reaching 85℃,after 14 cycles of steam huff and puff,and formation pressure at 3 MPa.These findings provide a theoretical basis for field trials and development plan optimization for converting cyclic steam stimulation to steam flooding for ultra-heavy oil of Block Shu-1.关键词
超稠油油藏/蒸汽驱/实施界限/转驱条件/小尺度数值模拟方法Key words
ultra heavy oil reservoir/steam flooding/implementation boundaries/transfer drive conditions/small scale numerical simulation method分类
能源科技引用本文复制引用
赵庆辉,王国栋,倪晨,陆福刚,程海清,张勇..超稠油蒸汽驱实施界限与转驱条件的数值模拟[J].石油钻采工艺,2026,48(2):207-216,10.基金项目
国家科技重大专项"辽河、新彊稠油/超稠油开发技术示范工程"(编号:2016ZX05055). （编号:2016ZX05055）
