Study on Wavelet Analysis in Metal Magnetic Memory Forecasts the Fault of Borehole Casing Well

Author

Shao, Xiaowei ; Zhang, Jun

Author_Institution

Inst. of Aerosp. Sci. & Technol., Shanghai Jiaotong Univ.

Volume

2

fYear

0

fDate

0-0 0

Firstpage

5557

Lastpage

5561

Abstract

Nearly 70% casing damaged well in complicated fault oil and gas field were caused by geology and engineering. These two factors cause the casing plastically imbalanced by ununiform load that applies on, thus the imbalanced section where stress is concentrated makes casing bending, deformation or breaking. Metal magnetic memory technique was an effective method to find stress concentration zone. For nonstationary leakage magnetic signals contained noise, the threshold value is determined based on 3sigma-rule applied electronic measurement, wavelet denoising is introduced in test systems of metal magnetic memory. As a result, can reserve the available signal and reduce the noise, character of magnetic signals (gradate) right is obtained

Keywords

bending; natural gas technology; oil technology; pipelines; shape memory effects; stress analysis; wavelet transforms; 3sigma-rule; borehole casing well fault; casing bending; casing breaking; casing deformation; complicated fault gas field; complicated fault oil field; geology; metal magnetic memory forecast; nonstationary leakage magnetic signals; stress concentration zone; wavelet analysis; wavelet denoising; Electronic equipment testing; Geology; Magnetic analysis; Magnetic memory; Magnetic noise; Noise measurement; Noise reduction; Petroleum; Stress; Wavelet analysis; 3σ-rule; Casing; Denoising; Metal magnetic memory; Stress concentration; Wavelet analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on

Conference_Location

Dalian

Print_ISBN

1-4244-0332-4

Type

conf

DOI

10.1109/WCICA.2006.1714137

Filename

1714137