凝析油含量的确定及应注意的问题

凝析油含量是凝析气藏评价中非常重要的参数之一.当前主要有两种方法确定凝析油含量:利用生产数据、利用全组分分析数据.前种方法需要参数少、易获得且与生产实际比较符合,但计算的凝析油含量受分离器条件影响大;后种方法计算精度高但需要数据多且与生产实际有偏差.对两种方法进行了敏感因素分析,提出了实际应用中各方法应注意的问题.根据新项目评价时间短、资料有限的情况,给出了估算凝析油含量的思路,为凝析油含量的确定提供依据.

Ways to determine the content of the condensate and problems needing to pay attention to in the application of them

The content of the condensate in condensate reservoir is one of the important parameters for evaluating the condensate reservoir.At present,there are mainly two ways to determine the content of the condensate:one is by means of production data,and the other is by means of all-component analysis data.The former requires a few parameters and the data are easy to obtain.The content of the condensate determined by this method accords with actual conditions,but it will be influenced by the working parameters(temperature and pressure)and the number of separators.The latter has higher accuracy,but it requires more data and there is certain deviation between the calculated content of condensate and actual content of condensate.The sensitive factors of the two methods are analyzed,and the problems needing to pay attention to in the application of them are presented separately.The time and data for evaluating a new condensate reservoir are limited,so a think for evaluating the condensate content of a new condensate reservoir is presented.