江汉油田注氮气改善开发效果分析与探讨

Analysis and Discussion on the Improvement of Development Effects by Nitrogen Injection in Jianghan Oilfield

目前江汉油田开采主要以注水驱动为主,受储层物性、构造特征等影响,油井未见效或受效差异大,随着近几年注水井井况问题的加剧,井网损失严重,注采矛盾突出。分析已实施过注氮驱油井组的实例,利用现有数据资料,以潭口、黄场、王场油田为例,结合油藏特征及生产情况,探讨注氮气驱油提高采收率在同类油藏中实施的可行性,以达到提高油田开发效果及提高采收率的目的。

Currently,water injection is the primary drive mechanism for oil recovery in Jianghan Oilfield.However,due to the influence of reservoir properties and structural characteristics,some wells have not been effective or have shown significant differences in response.With the exacerbation of well condition issues in recent years,there has been severe well pattern loss and prominent conflicts between injection and production.This paper analyzes cases where nitrogen injection has been implemented,using existing data from Tankou,Huangchang,and Wangchang oil-fields as examples.It discusses the feasibility of implementing nitrogen injection to improve oil recovery in similar res-ervoirs,aiming to enhance the production results and increase oil recovery.