摘要
气层敏感性资料是保护气藏、提高气藏开发效果与效益的重要基础资料,气层敏感性的准确评价,对于气层保护的决策与技术研究具有十分重要的作用。原有的气层敏感性实验评价方法基本照搬油层的方法,没有考虑气体的流动特性有别于油水,以及温度、压力、含水饱和度等因素对敏感性的影响,对气层的针对性不强,难免得出与实际情况有较大偏差的实验结果。文章针对气层的敏感性损害特点新建立了气层敏感性实验评价新方法,该评价方法针对原有方法的不足,结合气层的特殊性,运用最新的实验设备和检测手段,在岩心清洗设备与检测方法,气体湿度的制造、控制与检测,气层温度、压力及含水饱和度的真实模拟,以及外界液体损害气层与气体恢复过程等多方面进行了重大改进。将该方法用于塔里木依南地区和长庆苏里格地区的气藏敏感性评价,表明得出的敏感性实验结果更加合理。
The data about gas formation sensibility are the important basic data to protect the gas reservoir and improve the recovery result and benefits of the gas reservoirs. It is very useful to evaluate the gas formation sensibility accurately for the decision-making and the technical study of gas formation protection. The existing method of experimental evaluation for gas formation sensibility uses the same method for evaluation of oil formation sensibility without considering the gas flowing behavior differs from oil and water, and the influence of temperature, pressure and water saturation etc. on the sensibility. It does not fit gas formations properly and will get the experimental results with big errors to the real situation. Aiming to the features of sensibility damage of gas formations, the new method of experimental evaluation for gas formation sensibility is developed. Aiming to the defects of the existing method, considering the special properties of gas formations and using the modern experimental devices and testing tools, the great improvement have been made for the new method on the core clearing devices and testing method, the gas humidity making, controlling and measuring, the emulation of temperature, pressure and water saturation, the process of gas formation damage by the external fluids and gas restoring etc. The new method is used for the sensibility evaluation of gas reservoirs in Yina areas of Talimu oil field and Sulige areas of Changqing oil-field. The results of sensibility tests are more reasonable.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2005年第3期135-137,共3页
Natural Gas Industry
基金
国家973项目(编号:2001CB209107)中的研究内容
