Transient Pressure Fluctuation Effect During Gas Drilling in Horizontal Well

被引：4

作者：

Fang, Qiang ^{[1
]}

Meng, Yingfeng ^{[1
]}

Li, Hongtao ^{[1
]}

Wei, Na ^{[1
]}

Li, Gao ^{[1
]}

机构：

[1] Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu, Sichuan, Peoples R China

来源：

CHEMISTRY AND TECHNOLOGY OF FUELS AND OILS | 2019年 / 55卷 / 04期

关键词：

Gas drilling; horizontal well; pressure fluctuation; wave speed; attenuation coefficient; PROPAGATION; ATTENUATION;

D O I：

10.1007/s10553-019-01056-y

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Combining gas drilling technology with horizontal well drilling leads to improvement in production in oil and gas reservoirs. However, wellbore gas encountering high-pressure formation gas could bring substantial risks in gas drilling process. A theoretical model for pressure wave speed and attenuation coefficient in gaseous phase flow is established and analytically solved by classic fluid-mechanics model and small perturbation theory. The simulation results suggest that the main factors affecting the pressure wave are angular frequency, pipe diameter, and original pressure. In addition, a pressure wave test device is designed to validate the model, and the experimental results fit well with the simulation results. The work presented in this paper can provide a theoretical basis for horizontal section gas drilling and can also detect gas influx to ensure safety and prevent accidents.

引用

页码：497 / 507

页数：11

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