西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (2): 74-76.DOI: 10.3863/j.issn.1674-5086.2009.02.019

• 石油与天然气工程 • 上一篇    下一篇

压裂井产能预测理论曲线分析

戴庆1 戴江2 周宏权3   

  1. 1.大庆石油学院计算机与信息技术学院,黑龙江 大庆 163318; 2.大庆试油试采公司研究所,黑龙江 大庆163412;3.中国石化管道储运公司,江苏 徐州 221008
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-04-20 发布日期:2009-04-20

ANALYSIS ON DELIVERABILITY PREDICTION THEORETIC CURVE OF FRACTURED WELL

DAI Qing1 DAI Jiang2 ZHOU Hong-quan3   

  1. 1.School of Computer & Information Technology,Daqing Petroleum Institute, Daqing Heilongjiang 163318,China;2.Oil and Production Testing Company Research Institute of Daqing,Daqing Heilongjiang 163412,China;3.Pipeline Storage and Transportation Company,SINOPEC,Xuzhou Jiangsu 221008,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-04-20 Published:2009-04-20

摘要:

目前水力压裂已成为勘探开发低渗透油藏较为常用且相当有效的增产措施。针对具有启动压力影响的低渗透储层压裂井的不稳定产能预测理论曲线进行了分析研究。分析结果表明,表皮系数对压裂井的初期产量影响较大。表皮系数越大,裂缝井初期产量就越低。随生产时间增长,表皮效应的影响逐渐消失。启动压力梯度主要影响压裂井的中后期产能,启动压力越大,产量下降就越快。因此,在进行低渗透油藏垂直裂缝井产能分析时,必须考虑启动压力梯度的影响。

关键词: 启动压力梯度, 垂直裂缝井, 产能预测, 表皮效应, 压裂

Abstract: Hydraulic fracturing has become a common and quite effective well stimulation technology to explore and develop low permeability reservoirs.The deliverability prediction theoretic curve of fractured well in low permeability reservoirs with threshold pressure effect is studied in this paper.The result shows that the skin factor has a relative big effect on the initial output of a fractured well,the bigger the skin factor,the lower the initial output is.However,the effect of
skin factor will disappear gradually with the increase of production time.The threshold pressure gradient affects mainly the middle-late period output of a fractured well,the higher the threshold pressure is,the faster the output declines.As a result,the effect of threshold pressure gradient must be considered when the deliverability analysis is carried out on a vertical fractured well in low permeability reservoirs.

Key words: threshold pressure gradient, vertical fracture well, deliverability prediction, skin effect, fracture

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