Condensate banking dynamics in gas condensate fields: compositional changes and condensate accumulation around production wells

摘要

A bank of condensate can rapidly build up around a producing well when bottom hole flowing pressure falls below dewpoint in a gas condensate field. This bank grows as reservoir pressure declines both impairing well deliverability of gas and causing loss of heavy components at surface. an understanding of the condensate banking processes is essential in predicting the behaviour of the wells and of the fields.