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Edition and Publication:
< Natural Gas and Oil > Editorial Department
Hosted by:
China Petroleum Engineering & Construction Corporation Southwest Company
Authorized by:
China Petroleum Engineering & Construction Corporation
Co-hosted by:
Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
Address:
No.6, Shenghua Road, High-tech District, Chengdu, Sichuan, China
Postal Code:
610041
Tel:
028-86014709
028-86014500
Email:
cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
CN 51-1183/TE

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Temperature Characteristics of Damage Skin during Unsteady Gas Well Production

Author of the article:Li Xingjun, Liu Kui, Sui Weibo

Author's Workplace：College of Petroleum Engineering, China University of Petroleum (Beijing)

Key Words：Damage skin; Flow model; Transient temperature

Abstract：With application of downhole sensors in oil and gas wells, downhole pressure measurement is a relatively mature technology and real-time measurement of the downhole temperature is a developing technology. The real-time temperature and pressure data transmitted by downhole sensor play an important role in well testing. Established is a gas reservoir pressure-temperature model which simulates the distribution of pressure and temperature in the case of damage skin. The gas reservoir flow model can be solved by non-dimensionalization and Laplace transformation and the equation can be determined by boundary conditions. The distribution of reservoir pressure and temperature can be influenced by damage skin obviously. Meanwhile, the production of gas wells and the degree of damage skin will make the transient temperature change in the different degree and the formation properties of damage skin can be inversed through analysis on transient temperature change.