An extended trajectory-mechanics approach for calculating the path of a pressure transient: travel-time tomography
Abstract
The application of a technique from quantum dynamics to the governing equation for hydraulic head leads to a trajectory-based solution that is valid for a general porous medium. The semi-analytic expressions for propagation path and velocity of a change in hydraulic head form the basis of a travel-time tomographic imaging algorithm. An application of the imaging algorithm to synthetic arrival times reveals that a cross-well inversion based upon the extended trajectories correctly reproduces the magnitude of a reference model, improving upon an existing asymptotic approach. An inversion of hydraulic head arrival times from cross-well slug tests at the Widen field site in northern Switzerland captures a general decrease in permeability with depth, which is in agreement with previous studies, but also indicates the presence of a high-permeability feature in the upper portion of the cross-well plane.
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Federal Inst. of Technology, Zurich (Switzerland)
- AF-Consult Switzerland Ltd, Baden (Switzerland)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1580971
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Hydrology and Earth System Sciences (Online)
- Additional Journal Information:
- Journal Name: Hydrology and Earth System Sciences (Online); Journal Volume: 23; Journal Issue: 11; Journal ID: ISSN 1607-7938
- Publisher:
- European Geosciences Union (EGU)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES
Citation Formats
Vasco, Donald W., Doetsch, Joseph, and Brauchler, Ralf. An extended trajectory-mechanics approach for calculating the path of a pressure transient: travel-time tomography. United States: N. p., 2019.
Web. doi:10.5194/hess-23-4541-2019.
Vasco, Donald W., Doetsch, Joseph, & Brauchler, Ralf. An extended trajectory-mechanics approach for calculating the path of a pressure transient: travel-time tomography. United States. https://doi.org/10.5194/hess-23-4541-2019
Vasco, Donald W., Doetsch, Joseph, and Brauchler, Ralf. Thu .
"An extended trajectory-mechanics approach for calculating the path of a pressure transient: travel-time tomography". United States. https://doi.org/10.5194/hess-23-4541-2019. https://www.osti.gov/servlets/purl/1580971.
@article{osti_1580971,
title = {An extended trajectory-mechanics approach for calculating the path of a pressure transient: travel-time tomography},
author = {Vasco, Donald W. and Doetsch, Joseph and Brauchler, Ralf},
abstractNote = {The application of a technique from quantum dynamics to the governing equation for hydraulic head leads to a trajectory-based solution that is valid for a general porous medium. The semi-analytic expressions for propagation path and velocity of a change in hydraulic head form the basis of a travel-time tomographic imaging algorithm. An application of the imaging algorithm to synthetic arrival times reveals that a cross-well inversion based upon the extended trajectories correctly reproduces the magnitude of a reference model, improving upon an existing asymptotic approach. An inversion of hydraulic head arrival times from cross-well slug tests at the Widen field site in northern Switzerland captures a general decrease in permeability with depth, which is in agreement with previous studies, but also indicates the presence of a high-permeability feature in the upper portion of the cross-well plane.},
doi = {10.5194/hess-23-4541-2019},
journal = {Hydrology and Earth System Sciences (Online)},
number = 11,
volume = 23,
place = {United States},
year = {Thu Nov 07 00:00:00 EST 2019},
month = {Thu Nov 07 00:00:00 EST 2019}
}
Web of Science
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