西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (4): 101-106.DOI: 10.3863/j.issn.1674 – 5086.2011.04.018

• 石油与天然气工程 • 上一篇    下一篇

煤层气多分支井形态分析

张 辉1, 于 洋2, 高德利1, 郑江莉3   

  1. 1. 中国石油大学石油工程教育部重点实验室, 北京 昌平 102249;2. 中国石化西北油田分公司工程技术研究院, 新疆 乌鲁木齐 830011;3. 中国石化西北油田分公司工程监督中心, 新疆 轮台 941600
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-08-20 发布日期:2011-08-20

Analysis on Configuration of Multi-Lateral Well for Coalbed Methane

ZHANG Hui1, YU Yang2, GAO De-li1, ZHENG Jiang-li3   

  1. 1. MOE Key Lab of Petroleum Engineering, China University of Petroleum ( Beijing ) , Changping, Beijing 102249, China;2. Research Institute of Engineering, Northwest Oilfield Branch, SINOPEC, Urumchi, Xinjiang 830011, China; 3. SupervisionCenter of Engineering, Northwest Oilfield Branch, SINOPEC, Luntai, Xinjiang 941600, Chian
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-08-20 Published:2011-08-20

摘要: 煤层气井开采的第三阶段是煤层气井开采期限的主要部分, 前人研究表明可用真实气体拟压力法来
精确描述这一阶段的渗流规律。因此, 根据镜像反映和压力叠加原理, 建立了上下封闭煤层气藏中煤层气
多分支井压力分布方程。考虑多分支井沿程流动压降对产能的影响, 建立煤层气多分支井稳定渗流时的产
能计算耦合模型, 给出了模型的求解方法, 分析了多分支井形态参数对煤层气多分支井产能的影响规律。

关键词: 煤层气, 多分支井, 稳定渗流, 耦合模型, 分支井形态

Abstract: The third phase of coal-bed gas exploitation lasts long time, so stable seepage laws of this phase should
be studied. Pseudo pressure function is adopted to resolve this problem by J. P. Seidle. The pressure distribution
equations in the formation of multi-lateral well for coalbed methane are constructed on the basis of pressure super-
position and mirror image reflection theory. Pressure drop influence on the deliverability is considered. By coupling
wellbore flow and reservoir stable seepage flow, the deliverability calculation model and its solution method for
multi-lateral well are established. Rules of influence on deliverability of multi-lateral well for coalbed methane is
analyzed.

Key words: coalbed methane, multi-lateral well, steady seepage, coupling model, configuration of laterals20

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