西南石油大学学报(自然科学版) ›› 2002, Vol. 24 ›› Issue (1): 61-63.DOI: 10.3863/j.issn.1000-2634.2002.01.019

• 石油与天然气工程 • 上一篇    下一篇

水平井早期试井公式

吕涛1 吕劲2   

  1. (1·四川大学数学学院,四川 成都 610064; 2·加拿大Southern Alberta技术学院工程系)
  • 收稿日期:2001-06-21 修回日期:1900-01-01 出版日期:2002-02-20 发布日期:2002-02-20
  • 通讯作者: 吕涛

EARLY WELL TESTING FORMULATION OF THE HORI-ZONTAL WELL

L uTao1 L uJin2.

  

  1. (Mathematical College of Sichuan University,Chendu Sichuan 610064, China)
  • Received:2001-06-21 Revised:1900-01-01 Online:2002-02-20 Published:2002-02-20
  • Contact: L uTao

摘要: 水平井早期流动是指水平井从开始生产起到压力降传播波尚未达到储藏边界的阶段。在已有文献中早期阶段被视为径向流,早期结束时间也存在各种计算公式,不同公式的结果相差甚大,并且皆缺少理论依据。根据早期时刻的等势面是以水平井两端点为焦点的旋转椭球面,并应用质量守恒定律导出早期试井公式和早期结束时间的算法,理论和实例皆表明所推导的公式更能描述早期渗流规律,计算结果更符合实际情况。

关键词: 水平井, 早期流动, 试井公式

Abstract: The early flow of the horizontal well means the phase from the beginning of the production to the propagation of the pres-sure difference that did not reached the reservoir boundary yet.The phase was regarded as the radius flow in the published liter-ature, there are various formulations to calculate the early end time, the results of different equations have big errors, and
some of them lacked theoretical supports. According to the earlyiso-potential surface, that is the revolved ellipse surface with the two ends of the horizontal well, the early well testing equations and the calculating method of the early end time were derived in light of the mass conversation. The theory and practice have shown that the equation derived out in the paper more described the early fluid flow law, the calculated results were more rea-
sonable than those before.

Key words: horizontal well, early flow, well testing for-mulation

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