Technical Library

Stian Hegna investigates the use of the acoustic wavefield generated by a vessel for imaging the subsurface by estimating the emitted wavefield from the recorded direct arrivals, and discusses using...

ATLAB was started as an internally funded consortium at NTNU in 2016 with a primary aim of utilizing state-of-the-art geophysical equipment and new methods for collecting ultradeep passive...

The 3D survey, South Halfway was acquired in December 2019 in Wonowan, BC, Canada. The size of the survey is 94 km2 and covers a bog and river valley area. Over the bog area, the seismic is limited...

Ocean bottom node surveys are popular tools for both seismic exploration and monitoring due to the possibility for superior imaging and velocity model building compared to towed streamer surveys. In...

Ocean bottom node (OBN) seismic data processing commonly uses the combination of hydrophone (P) and vertical geophone (Z) components to separate upgoing and downgoing wavefields while attenuating...

A 3D land seismic survey was processed using amplitude and azimuth-friendly workflow. The sequence includes multiple iterations of surface consistent amplitude balancing and surface consistent...

Dense spatial sampling (~1m) and low signal-to-noise ratio (SNR) are typical features of distributed acoustic sensing (DAS) data. We have developed a wavelet stacking method to attenuate DAS noise...

Prolific source rocks, an abundance of trap types and stacked reservoirs and seals combine to make the Gulf of Mexico (GOM) a hydrocarbon super-basin. The GOM was the main site of development of...

3D DAS VSP data were acquired in two active wells equipped with Electrical Submersible Pumps (ESPs) from the Big Foot field in the deep water, Gulf of Mexico. During the VSP survey, the wells...

Inversion deblending in a sparse transformed domain is an important approach to obtain high quality deblended data for simultaneous source acquisition. For ocean bottom node data, more than one...

Velocity model building and imaging for land surveys are particularly challenging due to the complexities of the near surface model and strong noise. In this abstract, we design a model building...

The pressure wavefields emitted by air gun sources in a marine seismic survey are formally measured as a variety of received sound levels for observation points proximal and distal to the source...

First Published: First Break, October 2022