[1]张慧宇. 致密气藏试井异常资料产能计算新方法[J].油气井测试,2019,28(02):1-5.[doi:10.19680/j.cnki.1004-4388.2019.02.001]
　ZHANG Huiyu.A new method of productivity calculation for wells with abnormal testing data in tight gas reservoir[J].Well Testing,2019,28(02):1-5.[doi:10.19680/j.cnki.1004-4388.2019.02.001]
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《油气井测试》[ISSN:1006-6977/CN:12-1485/TE]

卷:
28
期数:
2019年02期
页码:
1-5
栏目:
出版日期:
2019-04-25

文章信息/Info

Title:

A new method of productivity calculation for wells with abnormal testing data in tight

gas reservoir

文章编号:
1004-4388(2019)02-0001-05
作者:
张慧宇
 中国石油天然气股份有限公司吉林油田分公司勘探开发研究院 吉林松原 138000
Author(s):
ZHANG Huiyu

Research Institute of Petroleum Exploration and Development, PetroChina Jilin Oilfield

Company, Songyuan, Jilin 138000, China

关键词:
 ; 致密气藏;  产能试井;  拟稳态;  产能方程;  无阻流量;  一点法
Keywords:

tight gas reservoir;  productivity test;  pseudosteady state;  productivity equation; 

open flow capacity;  “single point” method

分类号:
TE353
DOI:
10.19680/j.cnki.1004-4388.2019.02.001
文献标志码:
A
摘要:

YT致密气藏部分气井在利用二项式方程和指数式方程计算无阻流量时，出现渗流指数大于1、二项式产能

方程曲线斜率下倾并为负值的情况，导致两种方法无法计算无阻流量。在致密气藏产量稳定、流动压力稳定的前提下，利用流动进入拟稳态时的产能方程中压差和产量

关系公式，推导出计算无阻流量和产能方程的“稳定点”法。选用资料齐全的4口井进行无阻流量计算，并与常规“一点法”计算结果对比，相对误差294%。应用该

方法求取YT地区渗流指数大于1、资料不齐全的9口井的产能方程，结果与生产动态相符，为致密气田合理配产提供了一种新方法。

Abstract:

The binomial equation and exponential equation fail to calculate the open

flow capacity of some gas wells in the YT tight gas reservoir, due to the situations that the flow index is greater than 1 and the curve slope of

the binomial productivity equation declines and is negative. Under the premise of the stable production and flowing pressure of tight gas

reservoir, the “stable point” method was derived to determine the equation for open flow capacity and productivity according to the pressure

differenceproduction relation formula in the productivity equation in case of pseudosteady state flow. Four wells with complete data were

selected to calculate the open flow capacity, and the results were compared with that of the conventional “single point” method, suggesting a

relative error of 294%. This method was used to obtain the productivity equation for 9 wells with a flow index greater than 1 and incomplete

data in the YT area, and the results are in agreement with the production performance. This proposed method provides a new option for reasonable

production allocation in tight gas fields.

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备注/Memo

备注/Memo:
2018-09-15 收稿，2019-02-01 修回，2019-02-14 接受，2019-04-20 网络版发表
国家重大科技专项“松辽盆地南部深层致密气有效开发技术”（2016ZX05047005-006）
更新日期/Last Update: 2019-04-29