[1]胡小虎,王妍妍,刘华,等.考虑拟时间的页岩气压裂水平井生产数据分析方法[J].油气井测试,2021,30(01):66-72.[doi:10.19680/j.cnki.1004-4388.2021.01.012]
　HU Xiaohu,WANG Yanyan,LIU Hua,et al.Production data analysis method of shale gas horizontal well fracturing considering pseudo time[J].Well Testing,2021,30(01):66-72.[doi:10.19680/j.cnki.1004-4388.2021.01.012]
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考虑拟时间的页岩气压裂水平井生产数据分析方法()
分享到：

《油气井测试》[ISSN:1006-6977/CN:61-1281/TN]

卷:
30卷
期数:
2021年01期
页码:
66-72
栏目:
出版日期:
2021-02-25

文章信息/Info

Title:
Production data analysis method of shale gas horizontal well fracturing considering pseudo time
文章编号:
1004-4388(2021)01-0066-07
作者:
胡小虎1; 2; 王妍妍1; 2; 刘华1; 2; 王卫红1; 2
1.页岩油气富集机理与有效开发国家重点实验室 北京 100083
2.中国石化页岩油气勘探开发重点实验室 北京 100083
Author(s):
HU Xiaohu1; 2;  WANG Yanyan1; 2;  LIU Hua1; 2;  WANG WeiHong1; 2

1.State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,

Beijing 100083, China
2.Key Laboratory of Shale Oil/Gas Exploration and Production, SINOPEC, Beijing 100083, China

关键词:
页岩气; 压裂; 水平井; 吸附解吸; 物质平衡拟时间; 生产数据分析; 线性流
Keywords:
 ; 

shale gas;  fracturing;  horizontal well;  adsorption and desorption;  material balance pseudo

time;  production data analysis;  linear flow

分类号:
TE353
DOI:
10.19680/j.cnki.1004-4388.2021.01.012
文献标志码:
B
摘要:

由于没有相关计算模型，页岩气压裂水平井通过生产数据分析解释压裂改造参数时，没有考虑页岩气藏存在的

吸附气解吸及地层压力变化的影响。根据页岩气藏物质平衡方程，推导出考虑吸附气解吸的页岩气藏物质平衡拟时间计算模型，改进了变产变压生产数据特征分析方法流程：

通过Blasingame图版拟合诊断边界流动阶段、评价动态总储量；通过规整化拟压力（RNP）与物质平衡拟时间平方根图版拟合线性流段斜率，识别线性流结束时间，解释地质

、压裂参数。研究表明，不使用拟时间时，RNP与物质平衡时间平方根图的线性流拐点不是真实的线性流结束时间，解释的渗透率偏低、裂缝半长偏高。四川盆地某页岩气井

动态参数解释结果证明，本方法能综合考虑吸附气解吸、地层压力变化对RNP曲线物质平衡拟时间的影响，提高了线性流结束时间诊断精度和参数解释结果的准确性。

Abstract:
 

Because there is no relevant calculation model, the influence of adsorbed gas

desorption and formation pressure change in shale gas reservoir is not considered when interpreting fracturing parameters through production data

analysis in shale gas horizontal well fracturing. According to the material balance equation of shale gas reservoir, this paper deduces the material

balance pseudo time calculation model of shale gas reservoir considering desorption of adsorbed gas and improves the process of production data

characteristic analysis method of variable production and variable pressure. That is, the Blasingame chart is used to fit and diagnose the boundary flow

stage and evaluate the dynamic total reserves; the normalized pseudo pressure (RNP) and the square root chart of material balance pseudo time are

used to fit the slope of linear flow section, identify the end time of linear flow and interpret the geological and fracturing parameters. The results

show that the inflection point of linear flow in the square root diagram of RNP and material balance time is not the real end time of linear flow when

pseudo time is not used,
and the interpreted permeability is low, and the fracture halflength is high. The dynamic parameter interpretation results of a shale gas well in

Sichuan Basin show that this method can comprehensively consider the influence of adsorption gas desorption and formation pressure change on the

material balance pseudo time of RNP curve, 〖JP〗and improve the accuracy of diagnosis of linear flow end time and parameter interpretation results.

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备注/Memo

备注/Memo:
 2020-05-14收稿，2020-12-20修回，2021-01-04接受，2021-02-20网络版发表
国家科技重大专项“涪陵页岩气开发示范工程”（2016ZX05060）

胡小虎，男，1974年出生，博士，高级工程师，2010年毕业于石油大学（北京）油气田开发专业

，现从事页岩气开发相关的技术研究工作。电话：010-82311925，13911665487；Email:huxhu.syky@sinopec.com。通信地址：北京市海淀区北四环中路267号北京奥运大厦5

层，邮政编码：100000。

更新日期/Last Update: 2021-03-09