摘要
针对某高凝油油藏原油含蜡量高、析蜡点和凝固点高、原油物性对温度敏感的特点,为改善石蜡沉积造成油层孔渗伤害、常温注水使得渗流规律发生变化等开发现状,利用二维水驱物理模拟实验装置,研究注水开采过程中不同注水温度、不同直井井网对温度场分布规律的影响,再通过数值模拟分析不同井网下的含油饱和度分布规律。研究表明,注水温度对温度场影响很大,建议高凝油油藏在注水开发中选取高于析蜡点温度注水,井网部署以五点井网较优。
Some high pour point oil reservoirs have high wax content,wax precipitation point and set point.Wax deposition may damage reservoir porosity and permeability,and normal temperature water injection may change the seepage law.2D water flooding physical simulation experiment is conducted to study the effect of different water temperatures and vertical well patterns on temperature field distribution,and the distribution of oil saturation in different well patterns is analyzed through numerical simulation.The research shows that water injection temperature has big influence on temperature field.It is suggested that the temperature of injected water shall be higher than the wax precipitation point for high pour point oil reservoirs developed by waterflooding,and five-spot pattern is preferable.
出处
《特种油气藏》
CAS
CSCD
2011年第4期87-89,139-140,共3页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"委内瑞拉重油和苏丹3/7区高凝油油藏高效开发技术"(2008ZX05032)
关键词
高凝油
温度场
物理模拟
数值模拟
注水温度
井网
high pour point oil
temperature field
physical modeling
numerical simulation
water injection temperature
well pattern
