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Key Technology Breakthrough Of Domestic FOG Logging Tools
Feb 09, 2017

With the further development of the oil well logging technology, in the process of oilfield exploration of downhole parameters monitoring real time, accuracy and reliability of higher requirements are put forward. Due to the underground environment with high temperature and high pressure, chemical corrosion and strong electromagnetic interference etc, the traditional measuring sensor is difficult to adapt to the downhole environment. FOG logging tools is developed in the 1970 s a new type of sensor based on fiber optic, compared with the traditional inclinometer, it has good electrical insulating performance, strong ability to resist electromagnetic interference, high sensitivity, easy realization of measured signal distance monitoring and able to downhole under extreme conditions, can play a huge advantage in downhole parameters measurement, which has broad market prospects.

Logging for the development of FOG are mainly concentrated in the United States, Canada, Britain and other countries, the current logging research focus in the FOG logging tools are mainly concentrated in MWD and data transmission and the parameters of the downhole monitoring, combination logging, etc. The number of patents in the field of technology accounted for about 42.6% of the logging optical fiber sensor patent quantity.

Domestic logging tools are mainly composed of independent research and development of enterprises, research and development of colleges and universities is complementary. Although domestic logging optical fiber sensor research and development started relatively late, but after more than ten years of research and development, patent applications have been steadily rising trend, has a broad space for development.