石油学报 ›› 2009, Vol. 30 ›› Issue (6): 908-911.DOI: 10.7623/syxb200906020

• 油田开发 • 上一篇    下一篇

气藏采气速度与稳产期定量关系研究

GUO Chunqiu, LI Fangming, LIU Henian, XIA Zhaohui, LIU Xiongwei, FAN Hailiang, LIU Lingli   

  1. 1. PetroChina Exploration and Development Research Institute, Beijing 100083, China;
    2. Sinopec Northwest Branch Company, Kuche 842017, China
  • 收稿日期:2009-02-04 修回日期:2009-07-15 出版日期:2009-11-25 发布日期:2009-05-25
  • 作者简介:郭春秋,男,1972年11月生,2002年获中国石油勘探开发研究院博士学位,现为中国石油勘探开发研究院高级工程师,主要从事油藏工程方面的研究.E-mail:guochq@petrochina.com.cn

Anysis of quantitative relationship  between gas offtake and plateau duration of natural gas reservior

1. 中国石油勘探开发研究院, 北京, 100083;#br# 2. 中国石化西北油田分公司, 新疆库车, 842017   

  1. 1. PetroChina Exploration and Development Research Institute, Beijing 100083, China;
    2. Sinopec Northwest Branch Company, Kuche 842017, China
  • Received:2009-02-04 Revised:2009-07-15 Online:2009-11-25 Published:2009-05-25

摘要:

采气速度和对应的稳产期是气田开发中非常重要的两个指标。提出了利用产能公式和气藏物质平衡方程计算定容气藏稳产期的方法,其计算结果经数值模拟方法验证是可靠的,说明该方法是可行的。从理论上证明了定容气藏采气速度qD与(1-Rpsp)2近似成直线关系。利用该定量关系可预测气藏稳产期及递减期的产量。

关键词: 气藏, 采气速度, 稳产期, 定量关系, 采出程度, 产量预测, 产能公式, 物质平衡方程

Abstract:

Gas offtake (the gas recovery per year) and production plateau duration (the period of stabilized production) are the two important development indexes. A method was proposed for calculating the plateau duration corresponding to gas offtake of a constant volume gas reservoir using the deliverability equation and material balance equation. The reservoir simulation proved the calculation result was reliable. It means that the proposed method is available. It is proved theoretically that gas offtake is in linear relationship with (1-Rpsp)2. Here, Rpsp is the recovery percent at the end of production plateau. The quantitative relationship can be used to calculate the production plateau duration and gas production rate of declination period.

Key words: gas reservoir, gas offtake, plateau duration, quantitative relationship, recovery percent, production rate prediction, deliverability equation, material balance equation

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