西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (1): 108-114.

• 石油与天然气工程 • 上一篇    下一篇

储层伤害试井评价新方法研究

霍进1,陈陆建1,王本成2,桑林翔1,刘海上1   

  1. 1. 中国石油新疆油田分公司风城油田作业区,新疆克拉玛依8340002.“油气藏地质及开发工程”国家重点实验室· 西南石油大学,四川成都610500
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-02-01 发布日期:2012-02-01

Research on A New Method of Well Testing Analysisfor Formation Damage Evaluation

Huo Jin1, Chen Lujian1, Wang Bencheng2, Sang Linxiang1, Liu Haishang1   

  1. 1. Fengcheng Oilfield Production Company,Xinjiang Oilfield Company,Petrochina,Karamay,Xinjiang 834000,China2. State Key Laboratory of Oil & Gas Reservior Geology and Exploitation,Southwest Petroleum University,Chengdu,Chengdu 610500,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-02-01 Published:2012-02-01

摘要: 针对传统储层伤害试井评价的污染带渗透率求取存在较大偏差,进而影响表皮系数准确分解的问题,建立了
改进的麦金利图版试井分析新模型,利用拉普拉斯变换进行了求解,并编程绘制了新的分析理论图版(改进的麦金利
图版),获得了新的拟合解释方法,可以非常准确地求取污染带渗透率。再利用Hawkins 公式,优化计算真表皮系数和
污染半径,从而利用污染带渗透率、污染半径和真表皮系数进行储层伤害试井评价。最后,进行了实例分析,结果符合
现场实际,为改善储层、采取措施提供了依据。

关键词: 污染带渗透率, 真表皮系数, 污染带半径, 储层伤害评价, 试井

Abstract: A reasonable and precise formation damage evaluation is of great significance in guiding the development of oil and
gas reservoir. The conventional method for formation damage evaluation mainly depends on skin factor and the McKinley type
curves match,by which the permeability of the damaged zone can be calculated. However,because of the solution ambiguity
of the McKinley match,this method may result in great deviation,which further influences the accuracy of decomposition of
skin factor. A new model of modified McKinley well testing analysis method is established,and then its solution is got by
the Laplace transformation. Moreover,the new theoretical type curves(the modified McKinley type curves)are drawn up by
programming. Eventually a new analysis method of matching that can precisely calculate the permeability of damaged zone
is obtained. Hawkins formula is used to calculate true shin factor and the damaged radius,and on the basis of we evaluate
formation damage of well testing permeability of the damaged zone,true shin factor and the damaged radius. Finally the cases
of real oil wells are illustrated and the results accord with the fact,which can be references to formation improvements and
measures taking.

Key words: permeability of the damaged zone, true skin factor, the damaged radius, formation damage evaluation, well testing

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