Company Information

To our valued customers,

Geophysical Surveying Co. Ltd. (GSC), established in 1976 as borehole measurement services contractor company, has been providing services such as mudlogging, wireline logging, and slickline services for oil & natural gas wells, geothermal wells, hot spring wells, earthquake observation wells for over 40 years. Throughout the years, GSC responded to customer’s needs through developing our own HPHT production logging tool and digital mud logging SSX system and introduced the latest logging tools such as high temperature borehole televiewer , resistivity-type imager, and dipole sonic to enhance the equipment and expand the services. Recently, GSC introduced various optical fiber measurement systems (Distributed Acoustic Sensing-DAS, Distributed Temperature Sensing-DTS), which are useful for various long-term monitoring. Also, we have developed our own hot spring monitoring system, named "Oyureko™", which measuring and providing real time data of flow rate, temperature, and conductivity of hot springs, is has been contributing to hot spring maintenance.

From 2010, to protect the environment from global warming, GSC has been contributing to the development of technology to monitor the distribution of the injected CO₂ plume, drilling operations in CO₂ injection wells, and well logging for CO₂ reservoir selection. Moreover, to support geothermal power generation as renewable energy, we have been providing high quality data and reliable services using the equipment with high temperature, pressure, and corrosion resistance. Also, we will contribute the realization of a carbon-free society through provision of safety and efficient services, such with the latest measurement technology by optical fiber sensing or drilling monitoring services by IoT.

Based on our technical capabilities cultivated through many years of experience, GSC will continue to actively introduce and develop the leading equipment/technologies, and to provide both high quality data and reliable services, which meet customer’s needs, new needs and contribute to the development of a sustainable society. Terumasa Yamane
President
Geophysical Surveying Co., Ltd.