Inventor

HEGNA STIAN

NO52 patents

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

HEGNA STIAN

PGS GEOPHYSICAL AS

Seismic streamers which attentuate longitudinally traveling waves

System and method for determining positions of towed marine source-array elements

Method for aquiring and processing marine seismic data to extract and constructively use the up-going and down-going wave-fields emitted by the source(s)

Sensor mount for marine seismic streamer

Method for detecting air gun faults in a marine seismic source array

Inversion techniques using streamers at different depths

Survey techniques using streamers at different depths

Estimation of direct arrival signals based on predicted direct arrival signals and measurements

Methods for gathering marine geophysical data

Method for acquiring and processing marine seismic data to extract and constructively use the up-going and down-going wave-fields emitted by the source

Method for acquiring and processing marine seismic data to extract and constructively use the up-going and down-going wave-fields emitted by the source(s)

Wavefield separation based on a matching operator between sensor responses in multi-component streamers

Magnetometer as an orientation sensor

Systems and methods for removing acquisition related effects from seismic data

Seismic data processing

Seismic data acquisition

Seismic data processing

Time-efficient tests to detect air gun faults

Using ambient acoustic energy as a passive source in marine seismic surveys

Method and system for determining source signatures after source ghost removal

Noise attenuation

Estimating an earth response

Noise attenuation

Estimating an earth response

Non-uniform towing patterns in marine geophysical surveys

Individual actuation within a source subarray

Attenuation of axial vibration noise in pressure sensor measurements

Isolating a portion of electric potentials generated by a hydrophone indicative of particle motion or pressure

Estimation of direct arrival signals based on predicted direct arrival signals and measurements

Methods and systems that attenuate noise in seismic data

Separation of up-going and down-going wavefields including the direct arrival

Inline source

Methods and systems of wavefield separation applied to near-continuously recorded wavefields

Methods and systems that combine wavefields associated with generalized source activation times and near-continuously recorded seismic data

Methods and systems to operate marine sources to avoid air in water effects

HEGNA STIAN

Method for wave decomposition using multi-component motion sensors

Methods and apparatus for seismic exploration using pressure changes caused by sea-surface variations

Method of attenuating noise in marine seismic streamers utilizing varied sensor spacing and position-dependent band-pass filters

Wavefield deghosting of seismic data recorded using multiple seismic sources at different water depths

PARKES GREGORY ERNEST

Systems and methods for producing directed seismic waves in water

Method and system for determining source signatures after source ghost removal

Method for eliminating spectral constraints of acquisition system and earth filtering effects

SÖLLNER WALTER

Method for separating up and down propagating pressure and vertical velocity fields from pressure and three-axial motion sensors in towed streamers

Methods and systems for reconstruction of low frequency particle velocity wavefields and deghosting of seismic streamer data

HILLESUND ØYVIND

Methods for gathering marine geophysical data

SOLLNER WALTER

Methods and systems for imaging subterranean formations with primary and multiple reflections

STENZEL ANDRE

Marine seismic streamer cable with noise suppressing sensor support

PGS GEOPHYSCIAL AS

Attenuation of low-frequency noise in continuously recorded wavefields

AARON PETER

Subsurface imaging systems and methods with multi-source survey component segregation and redetermination

WIDMAIER MARTIN

Seismic surveying techniques with illumination areas identifiable from primary and higher-order reflections