魏岗高凝油田常规污水回注开发模式探讨  

Comprehensive adjustment of development mode of common swage recycling in Weigang high pour point oil field

作　　者：杨堃[1] 樊中海[1] 朱楠松[1] 谢中文[1] 林忠维[1] 

机构地区：[1]中国石化河南油田分公司

出　　处：《石油勘探与开发》2002年第2期94-96,共3页Petroleum Exploration and Development

摘　　要：魏岗油田位于南阳凹陷,为一断鼻断块圈闭油藏,具有典型的高凝油藏特点,进行热水驱固然可以提高驱油效率,对提高开发效果有利,但对于中小油田,开发成本投入较大。通过开发前期的常温水驱数字模拟研究,对魏岗油田这样的地层温度与地层析蜡温度高,地热梯度大,地层温度变化补偿快的高凝油藏,投入开发10年后油井井底温度仍然保持在原始温度,注冷水对开发效果的影响,也主要表现在注水井井底地带,对生产井乃至整个油藏的影响并不太大。现场采用污水回注开采,既提高了注水温度,也保护了生态环境,保证了油田长期高效的可持续开发。参3（杨堃摘）The oil displacement efficiency of Weigang oil field can be improved for it's typical high pour point reservoir, and this is to the advantage of the oilfield to improve development effect. But for the middle-small sized oil fields, it is harmful of effective development because of its high cost of production. By means of normal temperature water displacement numerical simulation at earlier stage of development, it is found that the high pour point crude reservoirs like Weigang which have characteristics such as high formation temperature, high formation wax precipitation temperature, high geothermal gradient, fast formation temperature variation compensation have been still keeping the original temperature in the well bottom after ten years development. The influence of cold water flooding to development effect is mainly at bottom zone of water flooding well, and it has little influence on production well and even whole reservoir. Utilizing sewage recycling development to oil field is not only raises water injection temperature, but also improves development effect, as well as protects ecology environment, and therefore oilfield can enjoy a long-term sustained development.

关 键 词：魏岗高凝油田 常规污水回注 开发模式 地热梯度 可持续发展 

分 类 号：TE349[石油与天然气工程—油气田开发工程] TE357.6