摘要
从压裂井试井理论物理模型出发,分析了有限导流垂直裂缝井双线性流模型和三线性流模型在渗流形式和试井样版曲线上的差别。分别利用双线性流模型和三线性流模型对大牛地气藏压裂井的典型测试井进行了试井解释,从拟合效果和实际解释结果看,大牛地气藏压裂井符合三线性渗流规律。详细研究了大牛地气藏试井曲线形态特征,发现正常形态的测试曲线有4类典型曲线,异常形态的测试曲线有3类典型曲线。对不同形态特征的测试曲线的试井解释将获得不同的可靠性参数。研究结果可为大牛地气藏的试井分析提供指导,还可为其他低渗透油气藏提供借鉴和参考。
Based on the theoretical physical models of fractured well,the differences in flow mode and type curves of well test between the bi-linear flow model and the tri-linear flow model of finite conductivity vertical fractured well were analyzed.For the typical testing wells of the Daniudi low permeability gas reservoir,we made well test interpretations by using the bi-linear flow model and the trilinear flow model,it was showed from the matching effect and the interpretation results that the tri-linear flow law was agreed to the Daniudi gas fracture wells.The well testing curves' characteristics of the Daniudi gas reservoir were studied in detail,it was found that the normal testing curves were four typical curves and the abnormal testing curves were three typical curves.The well test interpretation to different typical curve would cause different reliable parameters.The research results can give some guidance to the well test analysis of the Daniudi gas reservoir and the other similar low permeability oil/gas reservoirs.
出处
《油气井测试》
2012年第4期14-16,75,共3页
Well Testing
基金
国家重大专项"鄂尔多斯盆地大牛地致密低渗气田勘探开发示范工程"(2011ZX05045)
关键词
大牛地气藏
低渗透
压裂井
试井
Daniudi gas reservoir,low permeability,fractured well,well test
