Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Jakob B. U. Haldorsen"'
Autor:
Jakob B. U. Haldorsen
Publikováno v:
Second International Meeting for Applied Geoscience & Energy.
Autor:
Jakob B. U. Haldorsen, Leif Jahren
Publikováno v:
Geophysical Prospecting. 69:1391-1404
By applying a ray‐based three‐dimensional vector migration process to fully elastic three‐component synthetic Vertical Seismic Profiling data, we are able to demonstrate that the process gives an accurate compressional reflection image of the c
Autor:
Jakob B. U. Haldorsen
Publikováno v:
GEOPHYSICS. 86:V255-V267
Temporal aliasing occurs when a waveform is sampled with less than two points per time period for a signal at a given frequency. This insufficiently sampled frequency will be incorrectly mapped into a lower (aliased) frequency. Analogous to this, spa
Autor:
Harold Merry, Caleb Christensen, Ali A. Dawood, Vladislav Lesnikov, Guillaume Bergery, Michel Verliac, Jorge Machnizh, Audrius Berzanskis, Jakob B. U. Haldorsen, D. Rick Metzbower
Publikováno v:
The Leading Edge. 40:447-453
We describe a new optical three-component accelerometer for borehole applications. Field data acquired in early 2020 in a fiber-optic-instrumented well in Houston, Texas, show that the new optical accelerometer is a viable borehole seismic sensor, me
Autor:
Leif Jahren, Jakob B. U. Haldorsen
Publikováno v:
GEOPHYSICS. 85:S135-S150
We have determined how the measured polarization and traveltime for P- and S-waves can be used directly with vertical seismic profile data for estimating the salt exit points in a salt-proximity survey. As with interferometry, the processes described
Autor:
Jakob B. U. Haldorsen
Publikováno v:
SEG Technical Program Expanded Abstracts 2020.
Publikováno v:
GEOPHYSICS. 81:B189-B199
We have analyzed ultrasonic flexural data acquired in a North Sea well using a commercial tool optimized for generating such data, and found how one might separate refractions along successive layers of casings, and from these separated refractions,
Autor:
George Rhoads, Trevor Bollmann, Jakob B. U. Haldorsen, Robert D. Shank, Bryan Harvey, David Dushman
Publikováno v:
SEG Technical Program Expanded Abstracts 2019.
Publikováno v:
GEOPHYSICS. 81:IM71-IM95
The objective of this study is to establish whether sonic data acquired in a cased hole can be used to estimate the material behind a second casing when the annulus between the two sets of casings is fluid filled. We have analyzed full-waveform data
Publikováno v:
GEOPHYSICS. 78:KS73-KS84
We have developed a method for finding microseismic hypocenters from data recorded by arrays of triaxial motion sensors. The method reconstructs the elastic time-series signatures for possible microseismic sources at any point in 3D space, using full