Results 221 to 230 of about 39,029 (254)

Letters: Piezometer for Monitoring Rapidly Changing Pore Pressures in Saturated Clays

Water Resources Research, 1968
A modified Imperial College Piezometer incorporating a differential pressure transducer is a highly sensitive pore pressure measuring device unaffected by the total pressure of the environment in which it is placed. It is sufficiently rugged for field installation and provides the option of field calibration in situ.
Roger G. Wolff, Harold W. Olsen
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Monitoring Pore-Pressure Depletion in the Groningen Reservoir Using Ghost Reflections from Seismic Interferometry

84th EAGE Annual Conference & Exhibition Workshop Programme, 2023
Seismic interferometry (SI) retrieves new seismic responses between receivers or sources using, e.g., cross-correlation. Applying SI to a reflection survey with active sources and receivers at the surface, one retrieves ghost reflections besides the physical reflections. Ghost reflections are retrieved from the correlation of two primary reflections or
Shirmohammadi, F. (author), Draganov, D.S. (author), Veltmeijer, A.V. (author), Naderloo, M. (author), Barnhoorn, A. (author)   +4 more
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Modeling of the effects of propagating thrust slip on pore pressures and implications for monitoring

Earth and Planetary Science Letters, 2007
Abstract Recent observations at subduction zones and other environments have brought attention to the variety of slip processes along fault zones, including aseismic slip, slow slip, and very-low-frequency seismicity. Pore pressure records from monitoring wells have the potential to provide information on the nature of these slip processes.
E.J. Screaton, S. Ge
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Role of Plants—Results of Pore Pressure Monitoring in a Slope

2018
Plants on a slope can have mechanical, biological and hydrological roles which influence the stability of the slope. In most cases, soil moisture and sub-surface water play a vital role in the stability of a slope. Soil moisture, pore water pressure and the movement of surface and sub-surface water are generally dependent on the characteristics of ...
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Real-Time Interpretation of Supercharged Formations during Pore Pressure Monitoring

International Petroleum Technology Conference, 2019
Abstract The basic objective of real-time pore pressure (RTPP) services is to maintain the equivalent static density (ESD) and equivalent circulating density (ECD) within a desired mud weight (MW) window. This paper will present a new workflow to differentiate between supercharging in low-permeability, limited lateral extent sands, and ...
Scott Paul, Aldrick Garcia Mayans, Nikhil Patel, Matthew Blyth, Anthony Rodrigues   +4 more
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From seismic ambient noise to 4D pore pressure monitoring

2022
We previously developed a physics-based model relating changes in pore pressure and vertical stress to seismic velocity variations and validated the model in a small area of Groningen gas field. Using the entire Groningen seismic network, near-surface velocity changes are estimated over a three-year period, using passive image interferometry. Using our
Fokker, Eldert, Ruigrok, Elmer, Hawkins, Rhys, Trampert, Jeannot   +3 more
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HPHT Campaign in West Baram Delta: Successful Alternative Approached in Pre-drill Pore Pressure Prediction and Real-time Pore Pressure Monitoring

Proceedings, 2013
Recent HPHT campaigns have successfully tested deep seated overpressures plays at depths over 4500m below mudline and subsurface pressure more than 14000psi/96.5MPa. Regional overpressure model identified under-compaction as the predominant overpressure mechanism within this region.
C. Anwwar Ibrahim, F. Wijnands, J. Ismail, M.A.M Ariff, M.A. Wahab, L. Light   +5 more
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Behavior and Impact of Vacuum Pressure and Pore Pressure during Monitoring Process of Vacuum Preloading

Geotechnical Testing Journal
ABSTRACT During the monitoring process of vacuum preloading, varying measurement operations lead to discrepancies in the recorded values and interpretations of vacuum pressure (VP) and pore water pressure (PP) persist. This study presents a series of vacuum preloading tests to investigate the attenuation patterns of VP and PP in soil ...
Jianfeng Wu, Hao Qiao, Jun Wang, Peng Wang, HongZhi Liu, Wenhao Cai   +5 more
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Pore water pressure and streambank stability: results from a monitoring site on the Sieve River, Italy

Earth Surface Processes and Landforms, 1999
To investigate the role of pore water pressures in the stability of a streambank, a series of tensiometers and piezometers was installed in a bank of the Sieve River, Tuscany, Italy. Fluvial entrainment at the bank toe was monitored by repeated cross-profiling, erosion pins and marked pebbles. Fluctuations in matric suction measured at the tensiometers
CASAGLI, NICOLA, RINALDI, MASSIMO, GARGINI, ALESSANDRO, Curini A.   +3 more
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Importance of pore pressure monitoring in high walls

2008
Groundwater and associated pore pressure represent elements that can have a negative impact on surface mining and slope stability. Groundwater flow and deformation within a slope influence each other. An increase in pore pressure will result in a decrease of effective stress; and conversely, if the pore pressure decreases, the effective stress ...
Morton, K.L., Muresan, M.C., Ramsden, F.
openaire   +1 more source