西南石油大学学报(自然科学版) ›› 2006, Vol. 28 ›› Issue (5): 44-46.DOI: 10.3863/j.issn.1000-2634.2006.05.012

• 石油与天然气工程 • 上一篇    下一篇

蛇曲井生产井段压降预测方法

戚志林1 杜志敏2 汤勇2 舒秋贵3 王纬4
  

  1. 1. 中原油田博士后科研工作站, 河南 濮阳 457001; 2. “油气藏地质及开发工程”国家重点实验室, 四川 成都 610500;3. 西华师范大学国土资源学院, 四川 南充 637002; 4.中原油田勘探开发科学研究院, 河南 濮阳457001
  • 收稿日期:2005-07-05 修回日期:1900-01-01 出版日期:2006-10-20 发布日期:2006-10-20
  • 通讯作者: 戚志林

PREDICTION METHOD OF THE PRESSURE FALL IN PRODUCING WELL SECTION OF SNAKY WELL

QI Zhi-lin DU Zhi-min TANG Yong SHU Qiu-ju WANG Wei   

  1. Working Station for Postdoctoral Scientific Research of Zhong yuan Oil Field Company Ltd., Puyang Henan 457001,China
  • Received:2005-07-05 Revised:1900-01-01 Online:2006-10-20 Published:2006-10-20
  • Contact: QI Zhi-lin

摘要: 蛇曲井是一种新型复杂结构井,生产井段存在较大的纵向起伏,井筒流动特征既不同于普通水平管,也不同于水平井。研究了蛇曲井井筒流动特征,对蛇曲井微元段和孔眼段的流动进行了分析,根据质量守恒原理和动量定理,建立了裸眼完井和射孔完井方式下蛇曲井生产井段的井筒压降预测模型。在定产量和定井底流压两种工作制度下,给出了蛇曲井生产井段的压降预测方法。应用所建预测模型和水平井的水平段压降计算模型分别计算了某裸眼完井蛇曲井生产井段的井筒压降,结果表明:蛇曲井生产井段井筒压降不能用常规水平井水平段的压降模型计算,蛇曲井生产井段井筒压降不能忽略。

关键词: 蛇曲井, 压降, 预测, 方法, 复杂结构井, 水平井

Abstract:

Snaky well is a new type of complex well. Its producing well section is rugged longitudinally. The flow property of Snaky wellbore is different from horizontal pipe and horizontal well's. The article researched the flow property of Snaky wellbore and analyzed the flow for the minielement section and perforation section of the snaky well. Based on the continuity equation and the momentum equation, the pressure fall models of wellbore flow within an openhole and a perforated completion snaky well bore are established .The calculating methods of pressure fall were proposed for producing well section of the snaky well under the two working systems of constant production and constant bottomhole pressure. The pressure fall of the producing well section of an openhole completion snaky wellbore was calculated separately using the model established in the article and the calculating model of pressure fall for the horizontal section of the horizontal well .The results showed the pressure fall of the producing well section of snaky well couldn't be calculated with the pressure fall model of the horizontal sections of conventional horizontal wells. The pressure fall of producing well section of snaky well couldn't be omitted.

Key words: snake well, pressure fall, prediction, method, complicated structure well, horizontal well

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