摘要
针对内外区同时压裂的复合油藏,建立并求解了多区复合油藏点源模型,求得了内外区同时压裂两区复合油藏的无因次井底压力的表达式,最后分析了试井曲线特征和裂缝、地层参数对典型曲线形态影响。研究表明,内外区压裂井和内区压裂井的试井曲线形态有差别。当裂缝半长超出内区半径时,应采用新建立的内外区同时压裂模型来解释裂缝及地层参数。
In order to solve the production problem for wells with a vertical fracture in homo- geneous composite reservoir considering inner and exterior zone fracturing, the point-source models were established and solved, and the expression of dimensionless pressure was ob- tained.Then,the well testing type curves were drawn, and the characteristic of curve and influ- ence factors were discussed.The result indicated that the type curves of formation inner and exterior zone fracturing were different from only inner zone fracturing.Therefore,when forma- tion inner and exterior zone fracturing,this model should be applied to reduce the results error.
出处
《石油化工应用》
CAS
2013年第4期13-16,共4页
Petrochemical Industry Application
基金
国家科技重大专项项目"塔里木盆地海相碳酸盐岩资源潜力
有利勘探区带评价与目标优选研究"的资助
项目编号:2011ZX05004-004
关键词
复合油藏
垂直裂缝
压裂
有限导流
试井
composite reservoir
vertical fracture well
fracturing
finite conductivity
well testing
