[HTML][HTML] Simultaneous tracking of multiple whales using two fiber-optic cables in the Arctic

RA Rørstadbotnen, J Eidsvik, L Bouffaut… - Frontiers in Marine …, 2023 - frontiersin.org
We demonstrate the use of fiber-optic cables in the Arctic to simultaneously track multiple
whales over several hours along tens of km of cable length. Due to increased sea-ice melt in …

Bayesian geosteering using sequential monte carlo methods

DRA Veettil, K Clark - Petrophysics, 2020 - onepetro.org
We propose a Bayesian estimator for real-time autonomous geosteering. The Bayesian
geosteering tool is capable of simultaneously estimating the stratigraphic variables and tool …

Geosteering by exact inference on a Bayesian network

H Winkler - Geophysics, 2017 - pubs.geoscienceworld.org
ABSTRACT I formulate geosteering as a probabilistic inverse problem: Given a sequence of
log and directional survey measurements along a wellbore, and a pilot well log representing …

Retrieving virtual reflection responses at drill‐bit positions using seismic interferometry with drill‐bit noise

Y Liu, D Draganov, K Wapenaar, B Arntsen - Geophysical Prospecting, 2016 - earthdoc.org
In the field of seismic interferometry, researchers have retrieved surface waves and body
waves by cross‐correlating recordings of uncorrelated noise sources to extract useful …

Nonlinear state-space modeling approaches to real-time autonomous geosteering

Y Miao, DR Kowal, N Panchal, J Vila… - Journal of Petroleum …, 2020 - Elsevier
We develop a nonlinear state-space modeling (SSM) framework for autonomous
geosteering in real time, which aims to estimate the relative position between the wellbore …

Stochastic clustering and pattern matching for real-time geosteering

M Wu, Y Miao, N Panchal, DR Kowal, M Vannucci… - Geophysics, 2019 - library.seg.org
We have developed a Bayesian statistical framework for quantitative geosteering in real
time. Two types of contemporary geosteering approaches, model based and stratification …

Drill‐bit position monitoring using seismic‐while‐drilling data; numerical and field examples from Sweden

Z Wilczynski, A Kaslilar, M Ivandic, C Juhlin - Geophysical Prospecting, 2023 - earthdoc.org
The undesired drill‐bit deviation is a source of drilling risks and requires monitoring. Seismic‐
while‐drilling is one potential method to achieve this and has been tested in a number of …

Seismic tomography from the old to the new millennium

A Vesnaver - Arabian Journal for Science and Engineering, 2013 - Springer
During the past two decades, seismic tomography has been landing from the blue sky of
academic or pioneering papers to the hard ground of industrial processing over a large …

OPEN ACCESS EDITED BY

X Zhang, Z Liu, E Soule, W Fan, L Shen… - … of Cancer: Novel …, 2024 - books.google.com
A large amount of evidence from literature has manifested that tumor cells can effectively
avoid being recognized and killed by the immune system through immune checkpoint …

Errors in positioning of borehole measurements and how they influence seismic inversion

I Fernandes, K Mosegaard - Geophysical Prospecting, 2022 - earthdoc.org
Inversion of seismic data using information from horizontal wells is often hampered by
cumulative well‐location errors. These errors can have a significant influence on the final …