油气田开发

非均匀污染下水平气井产能新模型

  • 吴其林 ,
  • 傅恒 ,
  • 李秀华 ,
  • 韩定坤 ,
  • 黄勇 ,
  • 段金宝
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  • 西南石油大学油气藏地质及开发工程国家重点实验室
陈凤,1985 年生,女,西南石油大学在读硕士研究生,主要从事油气藏工程方面的研究工作。地址:(610500)四川省成都市新 都区西南石油大学硕士2009 级。E-mail:cherish1120@126.com

网络出版日期: 2012-02-20

基金资助

油气藏地质及开发工程国家重点实验室开放基金资助项目“复杂气井试井分析现状及应用研究”(编号:PLN0422)

A new deliverability model for horizontal gas well under non-uniform damage

  • WU Qilin ,
  • FU Heng ,
  • LI Xiuhua ,
  • HAN Dingkun ,
  • HUANG Yong ,
  • DUAN Jinbao
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  • State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China

Online published: 2012-02-20

摘要

对水平气井产能的准确预测有助于经济有效地开发气田。为了得到符合实际的水平气井产能公 式,在将气体流动过程视为储层渗流和井筒流动的基础上,考虑井筒附近非均匀污染和井筒压降对水平 气井产能的影响,建立了新的水平气井半解析产能模型。该文利用新建的模型实例计算水平气井的产量, 并与均匀污染下(不考虑井筒压降)的产量进行对比,同时分析井筒压降在不同渗透率条件下对水平气井 产能的影响,以及非均匀污染对产能的影响,为进一步完善实际水平气井和多分支气井的产能分析提供 了理论依据。

本文引用格式

吴其林 , 傅恒 , 李秀华 , 韩定坤 , 黄勇 , 段金宝 . 非均匀污染下水平气井产能新模型[J]. 岩性油气藏, 2012 , 24(1) : 121 -124 . DOI: 10.3969/j.issn.1673-8926.2012.01.024

Abstract

Forecasting the deliverability of horizontal well accurately plays an important part in economical and effective exploitation of oil and gas field. When we use horizontal well to exploit oil and gas field, the flow processing includes reservoir flow and wellbore flow. Taking both non-uniform damage around wellbore and pressure drop along the wellbore into account, we establish a semi-analytic model to estimate the deliverability of horizontal gas well. Then use this new model to calculate the production of a horizontal gas well, compare with the production under uniform damage, and respectively analyze the effect of pressure drop along the wellbore under different permeability and non-uniform damage around wellbore on well deliverability. This new model can provide theoretical basis for the deliverability analysis for horizontal gas well and multilateral gas well.

参考文献

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