Fiber Optic Technology – A new path in permanent monitoring

PGS began its research on the potential use of fiber optic technology in seismic in 1997, with the main emphasis on permanent monitoring of reservoirs.

By permanently placing fiber optic cables over a reservoir, we are able to detect even minor changes in the reservoir characteristics. This will improve the oil and gas companies’
understanding of their key assets and prospects to enhance recovery.

There are several advantages of a fiber optic system compared to a conventional one. A fiber optic system consists of passive optical cables and sensors with no in-sea electronics, utilizing proven optical components from the telecommunication industry. Secondly, the fiber optic sensors are all designed to perform in deep water without the need for external pressure housing. In addition, a fiber optic system operates with no electrical power and with a lower weight, making it easier and safer to employ at seabed. These advantages provide the foundation for making a system that is more reliable.

In 2006, a fiber optic cable was tested in the Gulf of Mexico, in cooperation with a major oil company. The test proved to be a success and we are currently building a 12-kilometer cable that will be deployed in 2007 on a producing field in deep water.

Although fiber optic technology in seismic is in its early days, we in PGS are excited to be one of the pioneers of this emerging technology.