新疆石油地质

新疆石油地质 ›› 2008, Vol. 29 ›› Issue (2): 235-237.

• 油藏工程 • 上一篇    下一篇

新的气井定压试井分析方法

罗银富1, 马中良2, 谢剑飞3, 隆正峰4, 依呷5   

  1. 1.中国石油大学石油工程教育部重点实验室, 北京102249;
    2.中国石化华东分公司规划设计研究院, 南京210036;
    3.中国石油塔里木油田分公司, 新疆库尔勒841000;
    4.中国石油西南油气田公司川东北气矿, 四川达州635000;
    5.中海石油研究中心, 北京100027
  • 收稿日期:2007-07-12 发布日期:2020-08-17
  • 作者简介:罗银富(1981-), 男, 四川自贡人, 在读博士研究生, 油气田开发,(Tel)010-89734192(E-mail)luoyinfu@126.com.

A New Method for Testing Analysis of Gas Well Production at Constant Pressure

LUO Yin-fu1, MA Zhong-liang2, XIE Jian-fei3, LONG Zhong-feng4, YI Xia5   

  1. 1. CMOE KEY Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China;
    2. Research Institute of Panning and Design, East China Branch, Sinopec, Nanjing, Jiangsu 210036, China;
    3. Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China;
    4. Chuandongbei Gas Field, Southwest Oil and Gas Field Company, PetroChina, Dazhou, Sichuan 635000, China;
    5. Research Center, CNOOC, Beijing 100027, China
  • Received:2007-07-12 Published:2020-08-17

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摘要： 对于定压生产气井试井分析, 由无因次产量的倒数和无因次时间构成的常规半对数图在考虑高速流动效应时需要进行修正。特别是当气藏渗透率高于1×10-3 μm2 时, 试井分析结果会受到非达西流和储集层伤害的影响。提出了无限大储集层中考虑井筒周围气体高速非达西流影响的气井定压试井分析方法。该方法简单、直接, 无需图版拟合或数据回归。实例分析表明, 对于具备条件进行定流压生产测试的气井, 只需单次定压试井测试, 即可方便、准确地求取气藏储集层渗透率、非达西流因子和表皮因子。

关键词: 高速, 非达西流, 气井, 试井

Abstract: As for constant-pressure gas production, the conventional semi-log plot of the inverse of the dimensionless rate versus the dimensionless time must be modified to account for high-velocity flow effects. Especially when reservoir permeability is higher than 1 mD, the well test is affected by non-Darcy flow and formation damage. This paper presents a new gas well testing analysis method considering gas well producing at constant pressure in infinite gas reservoir accounting for high velocity non-Darcy flow effects in vicinity of the well bore. This method is simple and direct and doesn't need type-curve matching or data regression. Case study shows that single constant pressure test can allow to precisely determine permeability, non-Darcy flow factor and skin factor of gas reservoir in gas well that constant-pressure well testing can be applied.

Key words: high velocity, non-Darcy flow, gas well, well testing

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