大牛地气田产出污水回注标准的制定

The Development of Reinjection Standard of Produced Sewage Water in Daniudi Gas Field

大牛地气田产出水采用集中处理方法进行处理,处理后的污水回注地层。为提高污水回注效率、不伤害回注层、保护环境,从分析混合污水水质出发,对回注层岩心渗透率等性质进行试验分析,结合现行气田水回注标准、目标气田的储层特性等,研究建立了大牛地气田回注水油量、悬浮物含量等回注指标标准,以确保污水高效安全回注。

The produced sewage water is processed by centralized treatment in Daniudi Gas Field.The treated sewage is reinjected into the formation.In order to improve the processing efficiency,protect the reinjection layer and environment,the study is carried out for analyzing the quality of mixed sewage,the core permeability and the features in the reinjected layers were tested in laboratory.Combined with the available reinjection standard and the features of target gas field,the standard including the injecting rates of oil and water injection,the content of suspended matters,etc is established for ensuring the safe and effective reinjection of sewages.