Inventor

WESTERDAHL HARALD

NO22 patents

⚠️ This page may combine multiple inventors who share the name “WESTERDAHL HARALD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

WESTERDAHL HARALD

NORSKE STATS OLJESELSKAP

Method and apparatus for determining the content of subterranean reservoirs

Device and method for measurement of resistivity outside of a wellpipe

Method and device for detection of em waves in a well

Device and method for measurement by guided waves on a metal string in a well

Device for electromagnetic detection of geological properties in a well

STATOIL ASA

Electromagnetic methods and apparatus for determining the content of subterranean reservoirs

Method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves

Electromagnetic method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves

Electromagnetic methods and apparatus for determining the content of subterranean reservoirs

Electromagnetic method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves

STATOIL PETROLEUM AS

P/S wave measurement and compensation

Seismic sensor recording system

P/S wave measurement and compensation

Apparatus for marine seismic survey

NORSK HYDRO AS

Device for monitoring of oil-water interface

Method for monitoring low-resistivity formation using polarized waves

NORGES GEOTEKNISKE INST

Electromagnetic surveying for mapping the content of subterranean reservoirs

Shear wave generator

ELECTROMAGNETIC GEOSERVICES AS

Method and apparatus for recovering hydrocarbons from subterranean reservoirs

AMUNDSEN LASSE

Method of providing seismic data

MULTIFIELD GEOPHYSICS AS

Electromagnetic method on shallow water using a controlled source

EQUINOR ENERGY AS

Method for deghosting seismic data