摘要
在疏松砂岩油藏注水开发中后期,大孔道的存在是进一步提高采收率的主要制约因素。文中针对边底水驱油藏特点,在前人研究的基础上,建立了管道流动模型;结合流体的不同流动形态,推导得出了相应的大孔道孔喉直径及渗透率概算公式。在冀东油田高浅北区高104-5区块的应用结果表明,该方法计算结果与井间示踪剂监测及油田开发动态资料均能较好地吻合,具有使用简便、结果可靠、成本低的特点。其对大孔道参数的定量识别,为大孔道封堵技术应用过程中堵剂的选择及用量的确定提供了科学依据。
For unconsolidate（I sandstone reservoir, the existence of high permeable channels is a main limiting factor to further improve oil recovery in the middle-late stage of waterilnoding. According to the characteristics of the reservoirs with edge-bottom water, the pipe flow model was established based on the tbrmer researches in this paper. Combined with the different flow pattern of fluid, the parameters such as diameler and permeability of high permeable channels were derived. The method was applied in Block Gao 104-5 in the north area of Gaoqian of Jidong Oilfield. The calculation resuhs are in agreement with the data obtained from tracer monitoring technique and tile development performance. The resuhs show that tiffs calculation method is simple, reliable and low cost. The apprnximate calculation method can identify high pemleahle channels quantitatively. It provides scientific evidences for type selection and quantity determination of the plugging agent in the application of high permeable channel plugging technology.
出处
《断块油气田》
CAS
2013年第2期213-215,共3页
Fault-Block Oil & Gas Field
关键词
大孔道
定量识别
管流模型
概算法
边底水驱
high permeable channel
quantitative iclenti
pipe flow model
approximate alculation method
edge-bottomwaterflooding
