BP installs optical seismic in offshore well

Aug. 24, 2006
Weatherford International Ltd. has completed what it calls "the world's first" offshore installation of a permanent in-well optical seismic system in BP Norway's G-24 injector well in Valhall oil field off Norway.

By OGJ editors

HOUSTON, Aug. 24 -- Weatherford International Ltd. has completed what it calls "the world's first" offshore installation of a permanent in-well optical seismic system in BP Norway's G-24 injector well in Valhall oil field off Norway.

The primary objective in installing the in-well sensors is improved management of water injection and production, said Olav Barkved, lead geophysicist for BP Norway Valhall field.

Weatherford said the successful advanced completion technology is the result of a 2-year collaboration with BP Norway to design and manufacture a system suitable for deployment in an injection or production well.

The equipment consists of five 3-component optical accelerometer stations and an optical pressure and temperature gauge deployed with the production tubing near the reservoir.

The system provides continuous seismic data along with pressure and temperature monitoring information, said Tad Bostick, vice-president for Weatherford's optical sensing systems. It enables the simultaneous collection of permanent seabed and downhole seismic data.