A Down-Hole Video Imaging Logging Tool

Author

Su Juan ; Zhang Jia-tian ; Yan Zheng-guo ; Hu Chang-ling

Author_Institution

Key Lab. of Educ. Minist. for Photoelectricity Gas & oil Logging & Detecting, Xi´an Shiyou Univ., Xi´an, China

fYear

2009

fDate

19-20 Dec. 2009

Firstpage

1

Lastpage

3

Abstract

Imaging logging technology is applied widely in casing inspection, casing scale-removing and downhole ashing because of direct expression and more information. The DHV-05 downhole video is designed, which employed wavelet based image-compression, high speed digital modulation transmission, CPLD based demodulation, special mechanism to achieve downhole video image compression, high speed wire data transmission, down-hole illumination and high temperature. The stability has been proved through the data transmission test on 3000 m wire and 125Â°C high temperature test.

Keywords

data communication; data compression; video coding; wavelet transforms; CPLD based demodulation; DHV-05 downhole video; casing inspection; down-hole video imaging logging tool; downhole video image compression; high speed digital modulation transmission; high speed wire data transmission; temperature 125 degC; wavelet based image-compression; Data communication; Demodulation; Digital modulation; Image coding; Inspection; Lighting; Temperature; Testing; Video compression; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Engineering and Computer Science, 2009. ICIECS 2009. International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-4994-1

Type

conf

DOI

10.1109/ICIECS.2009.5364655

Filename

5364655