内外区同时压裂均质复合油藏产能分析
Analysis on Productivity of Homogeneous Composite Reservoir in Simultaneous Fracturing of Internal and External Areas
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- 引用格式:
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蔡明金,张福祥,杨向同,彭建新,罗春树,牛新年,施英,王宏.内外区同时压裂均质复合油藏产能分析[J].天然气与石油,2013,31(3):0.doi:
.Analysis on Productivity of Homogeneous Composite Reservoir in Simultaneous Fracturing of Internal and External Areas[J].Natural Gas and Oil,2013,31(3):0.doi:
- DOI:
- 作者:
- 蔡明金1，2 张福祥3 杨向同3 彭建新3 罗春树3 牛新年3 施 英3 王 宏3
- 作者单位:
- 1.西南石油大学博士后流动站，2.中国石油塔里木油田公司博士后工作站，3.中国石油塔里木油田公司勘探开发研究院
- 关键词:
- 复合油藏；垂直裂缝；压裂；有限导流；产能；产量递减
Composite reservoir； Vertical fracture； Fracturing； Finite diversion； Productivity； Production decline
- 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递减产量的表达式，最后分析了裂缝及地层参数对实例井产能的影响。研究表明，当地层呈多区复合油藏分布时，压裂井裂缝半长越长，其初期产量不一定越高，这要取决于地层内外区渗透能力及内区半径大小，对此类油藏外区是否进行压裂应慎重。
For composite reservoir in simultaneous fracturing of internal and external areas， established is a point-source model for such composite reservoir with many areas， obtained is an expression for dimensionless production decline of the composite reservoir in simultaneous fracturing of internal and external areas and conducted is analysis on effects of fractures and formation parameters on example well productivity. Research results show that fracture half-length of fractured well is not necessarily proportional to initial production of the well in case of composite reservoir distribution with many areas， its production mainly depends on percolating capacity in internal and external areas of the formation and radius size of the internal area and it shall be considered carefully whether the external area in such reservoir is necessary to fracture.
