龙岗气田水异层回注可行性研究

The Feasibility Study on Gas Field Water Heterostrate Recycling of Longgang Gas Field

关键词:  气田水  沙二段  回注  配伍性

Key words:  gas field water  Sha’er  reclycling  compatibility

摘要:

目前对气田水最有效的处理方式是异层回注处理,但对不同气藏的气田水进行回注时,要保证回注成功和回注系统正常运行,必须进行配伍性实验。针对龙岗地区飞仙关组和长兴组气田水的水质特征,与回注层沙二段岩心进行了配伍性实验,研究了龙岗气田水异层回注的可行性,评价了影响回注的因素,并提出相应的解决措施。在岩心伤害实验的基础上,推荐了气田地层水回注的水质指标,确定了最佳混注比例。

Abstract:

The most effective processing mode to gas field water is heterostrate recycling,but recycling gas field water for different reservoir,ensuring the success of recycling,we should carry on the matching experiments. Aiming at the water quality characteristics of Feixianguan group and Changxing group in the area of Longgang,we proceed the matching experiments with drilling cores of recycling layer Sha’er section,thereby recognized the factors of influencing reinjection,and put forward some corresponding solutions,study the heterostrate recycling feasibility of gas field water in the area of Longgang.On the basis of drilling core damage experiments,this article recommends the water quality index on gas field formation water recycling and obtains the best mixture ratio.