基于阶段生产数据的IPR曲线类型及意义

发布时间：2018-10-20 14:50

【摘要】：针对传统IPR曲线测试影响时率、曲线数量少、矿场应用范围小等问题,提出了利用油井阶段生产数据制作IPR曲线的方法,并归纳出了负相关型、近水平型、正相关型、近垂直型、簇型等5种IPR曲线类型。研究表明:负相关型IPR曲线反映井区地层压力相对稳定,日产液量与井底流压关系明确;近水平型、正相关型IPR曲线反映阶段地层压力存在变化,日产液量受静压、流压变化共同影响;近垂直型IPR曲线反映井下举升能力小于地层理论产液能力,举升工况与产液能力不匹配;簇型IPR曲线反映阶段生产状况稳定,但日产液量与井底流压的相关性不明。结合生产数据点位于IPR曲线的位置,可对油井产液能力、地层压力变化趋势、举升工况合理性做出判断,指导井区注采调整。
[Abstract]:In view of the problems such as the influence rate of traditional IPR curve test, the small number of curves and the small application range of mine field, this paper puts forward a method of making IPR curve from production data of oil well stage, and concludes the negative correlation type, near horizontal type, positive correlation type, and so on. There are 5 types of IPR curves, such as near vertical type, cluster type and so on. The results show that the negative correlation IPR curve reflects the formation pressure in the well area is relatively stable, the relationship between daily fluid production and bottom hole flow pressure is clear, the near horizontal type and the positive correlation type IPR curve reflect the variation of formation pressure at the stage, and the daily fluid production is subjected to static pressure. The near vertical IPR curve reflects that the lifting capacity is smaller than the theoretical liquid production capacity of the formation, and the lifting condition does not match with the liquid production capacity. The cluster IPR curve reflects the stable production condition in the stage. However, the correlation between daily fluid production and bottom hole flow pressure is unknown. Combined with the position of production data point in IPR curve, the oil well's liquid production capacity, formation pressure change trend, and the rationality of lifting condition can be judged, and the injection-production adjustment in well area can be guided.
【作者单位】：中国石化胜利油田分公司;
【基金】：国家科技重大专项“胜利油田特高含水期提高采收率技术”(2011ZX05011) 中国博士后科学基金资助项目“近极限含水期河控三角洲储层内部结构及剩余油分布”(2012M511542)
【分类号】：TE331

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