Rational production proration of gas wells in unconsolidated sandstone gas reservoir

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• 作者：Guoyun WuJiao LI
• 会议时间：2011-11-01
• 关键词：sand control ; water control ; multi-factor production proration ; numerical simulation
• 作者单位：Guoyun Wu(Chongqing University Of Science&Technology, Chongqing,401331,China)Jiao LI(College of Material Science and Engineering Chongqing University, Chongqing,400044,China)
• 母体文献：2011全国特殊气藏开发技术研讨会论文集
• 会议名称：2011全国特殊气藏开发技术研讨会
• 会议地点：重庆
• 主办单位：重庆市科学技术协会
• 语种：chi

摘要

Multi-layered unconsolidated sandstone gas reservoir is featured by unconsolidated lithology, interbeded gas-water zones and active edge water.Irrational production proration will lead to water breakthrough and sand inflow(AOF) is already incompetent in solving problems nowadays.Based on multipoint well test deliverability analysis, production data dynamic analysis, single well controlled reserves and critical situation of inflow calculation, and combining the calculation of minimum liquid hold-up gas rate an maximum erosion gas rate, meanwhile considering balanced gas recovery factor, balanced pressure drop, safe sand inflow and safe liquid hold-up, the multi-factor production plan has been set up, which is improved and adjusted by integrating water influx performance and years of stable production, through gas reservoir numerical simulation.A scientific and rational production proration pattern particularly for this type of gas reservoir has been determined.The reservoir simulation results of case study show that the water production in gas well can be controlled and the gas reservoir sustained stable production can last more than 1.3 year.