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The AAPG/Datapages Combined Publications Database
Showing 34,502 Results. Searched 200,616 documents.
Modeling Differences in Drawdown between a Horizontal Water Well and a Vertical Water Well within a Confined Clastic Aquifer
Lisa Lynch Harrell
GCAGS Transactions
... an elliptical trough of depression around the horizontal well. Potentiometric Gradient The gradient is the driving force to move ground water to a well or down...
2006
Detection of shallow sedimentary structure of Yigong Lake in Tibetan Plateau using distributed acoustic sensing
Jian Zhou, Jizhong Yang, Heng Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
..., and the Swave velocity gradually becomes smaller in the horizontal We would like to thank the financial support of the Fundamental Research Funds...
2022
Bering Sea Velocity-amplitude Anomalies: Exploring the Distribution of Natural Gas and Gas-hydrate Indicators
Ginger A. Barth, David W. Scholl, and Jonathan R. Childs
AAPG Special Volumes
... (velocity pseudostructure), the in-situ geologic horizons are actually horizontal. The silica BSR is a phase boundary, across which opal-A, the amorphous...
2009
Studies on Orientation and Imbrication of Pebbles with Respect to Cross-stratification
Supriya Sengupta
Journal of Sedimentary Research (SEPM)
... gradient may be actually less) than the one described above, and consequently greater velocity of flowing water, pebbles are almost instantaneously oriented...
1966
A Diagnostic Framework for "Bashed" Wells in Unconventional Reservoirs: A Numerical Simulation and Model Selection Theory Approach
L. Zhe, R. Younis, J. Jiang
Unconventional Resources Technology Conference (URTEC)
... adsorption/desorption, gas transport in ultra-tight porous media across various flow regimes (Knudsen, transition, slippage, viscous), high-velocity...
2016
Limitations on Resolution of Seismic Reflections and Geologic Detail Derivable from Them: Section 1. Fundamentals of Stratigraphic Interpretation of Seismic Data
Robert E. Sheriff
AAPG Special Volumes
..., or the thickness of stratigraphic units; and horizontal, or the areal size of features. Most reflection events seen on a seismic section...
1977
A Unified Model to Predict Flowing Pressure and Temperature Distributions in Horizontal Wellbores for Different Energized Fracturing Fluids
Zhengming Xu, Kan Wu, Xianzhi Song, Gensheng Li, Zhaopeng Zhu, Zhaoyu Pang
Unconventional Resources Technology Conference (URTEC)
... fracturing fluids and investigate the changes of fluid properties from the wellhead to the toe of the horizontal wellbore. The velocity and pressure...
2018
Volume-constrain first arrival tomography based near surface modeling and its application
Naijian Wang, Zhihui Yan, Qingpo Ma, Wei Wu, Yunfei Zu, Yonggui Hu
International Meeting for Applied Geoscience and Energy (IMAGE)
... Yunfei, Hu Yonggui,BGP,CNPC. Seis-ATI, H.B. Summary In seismic exploration, high-precision near-surface velocity model is required for real-surface...
2022
Modeling secondary oil migration with core-scale data: Viking Formation, Alberta basin
Elise B. Bekele, Mark A. Person, Benjamin J. Rostron, Randal Barnes
AAPG Bulletin
...-a geochemical and thermal maturation study: Geological Survey of Canada Bulletin 262, p. 11-22. Hayba, D. O., and C. M. Bethke, 1995, Timing and velocity...
2002
Forward Modeling to Improve Seismic Acquisition Design
Paula A.C. Barbosa, Jose A. Jaramillo, Jose H. Olaya
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... of the area —e.g., the Chusma Subthrust, and its effect in lateral and vertical velocity variations. Horizontal displacements between CRP and CDP...
2006
Characterization and simulation of transverse noise waves of a multisensor solid streamer
Viktor Smirnov, A. Sourice, J. Ribette, J. Mars, P. Herrmann
International Meeting for Applied Geoscience and Energy (IMAGE)
... advantages over traditional hydrophone-only streamers. In particular, they provide a measure of the pressure gradient which allows for data driven...
2022
Hydraulic fracturing during the formation and deformation of a basin: A factor in the dewatering of low-permeability sediments
John W. Cosgrove
AAPG Bulletin
... from velocity data: accounting for overpressure mechanisms besides undercompaction: International Association of Drilling Contractors, Society...
2001
Seismic Reflection Measurements of Northwest Australian Margin and Adjacent Deeps
J. J. Veevers , D. A. Falvey , L. V. Hawkins , W. J. Ludwig
AAPG Bulletin
... be expected across a zone with a steep gradient in sediment velocity, the "approximate axis of thick Tertiary sedimentation" of Mollan et al. (1969, 1970...
1974
The Use of Physical Modeling to Resolve Offshore Seismic Problems
B. J. Evans, M. Urosevic
Indonesian Petroleum Association
... at the level of interest (Callovian Unconformity). The velocity contrast across shallow faults has the effect of causing non-hyperbolic moveout on the CMP...
1995
Pressure Prediction in Exhumed Basins
A. Edwards, J. Heller, S. Clancy, N. Whitfield, S. O'Connor
GEO ExPro Magazine
... basins but the effect here is minor as the reduction in velocity is small. The overall interpretation is that the process of overpressure generation...
2013
Gas Hydrate Offshore Vancouver Island, Northern Cascadia Margin
M. Riedel, Eleanor C. Willoughby, Nigel Edwards, Roy D. Hyndman, George D. Spence, Ross Chapman, Marc-Andre Chen, Ivana Novosel, Katrin Schwalenberg
AAPG Special Volumes
... a velocity effect. It is not easy to determine if the BSR is primarily because of high-velocity gas hydrate above the BSR or low-velocity free gas...
2009
Analysis of Fluid and Heat Regimes in Sedimentary Basins: Techniques for Use with Large Data Bases
S. Bachu, C. M. Sauveplane, A. T. Lytviak, Brian Hitchon
AAPG Bulletin
..., because density-dependent features can complicate the analysis. The horizontal components of the Darcy velocity can be computed using an equivalent...
1987
Structure of Argentine Continental Margin
William J. Ludwig , John I. Ewing , Maurice Ewing
AAPG Bulletin
... equals the true velocity only if the layer is horizontal and planar. To determine the true velocity and the apparent dip of the layers, the profile...
1968
Geomechanical Modeling and Equivalent Circulating Density (ECD) Management- An Integrated Approach for Successfully Drilling and Managing Losses in Highly Depleted Sands
Avirup Chatterjee, Amitava Ghosh, Priveen Raj Santha Moorthy
Indonesian Petroleum Association
... the reservoirs. Therefore, understanding the effect of productioninduced depletion on the magnitude of horizontal stresses was important for mud weight planning...
2020
Hydraulic fracture characterization by integrating multidisciplinary data from the Hydraulic Fracturing Test Site 2 (HFTS-2)
Zhishuai Zhang, James DiSiena, Dimitri Bevc, Ivan Lim Chen Ning, Yunhui Tan, Laura Swafford, Mike Craven, Kelly Hughes, Andrea Vissotski
Unconventional Resources Technology Conference (URTEC)
... by pore pressure gradient, and different microseismic activities due to difference in-situ conditions. These findings can be insightful for understanding...
2021
Characterization of a Sediment Core from Potential Gas-hydrate-bearing Reservoirs in the Sagavanirktok, Prince Creek, and Schrader Bluff Formations of Alaska's North Slope: Part 3Electrical Resistivity Core Studies
R. F. Sigal, C. Rai, C. Sondergeld, B. Spears, W. J. Ebanks Jr., W. D. Zogg, N. Emery, G. McCardle, R. Schweizer, W. G. McLeod, J. Van Eerde
AAPG Special Volumes
... this study, both horizontal and vertical resistivities were measured. The horizontal sample measurements had resistivities of 3.26 and 3.25 ohm m...
2009
Velocity Model Building Using Tilted Orthorhombic Depth Imaging for Full Azimuth Seismic Data
Yunfeng (Fred) Li, Qiaofeng Wu, Chuen-Song Chen
GCAGS Journal
...Velocity Model Building Using Tilted Orthorhombic Depth Imaging for Full Azimuth Seismic Data Yunfeng (Fred) Li, Qiaofeng Wu, Chuen-Song Chen...
2013
Fluviatile Obstacle Marks from the Wadis of the Negev (Southern Israel)
Iaakov Karcz
Journal of Sedimentary Research (SEPM)
... in front of the obstacle rises. As the velocity of the approaching flow is not uniform and decreases downwards, a vertical pressure gradient causes...
1968
The Application of a Linked Physical Ocean CirculationEcosystem Model to Prediction of Organic-Carbon Sedimentation in Lake Tanganyika, East African Rift System
Kunihiro Tsuchida, Akihiko Okui, Yoshinobu Yamade, Noboru Yamazaki, Ryotaro Iwahashi
Special Publications of SEPM
... and Philander (1981) is used in our model, in which the vertical diffusion coefficient depends on the vertical density gradient and the horizontal...
2005
Investigating the Impact of Wellbore Liquid Drop-outs on Recoverable Reserves in Utica
Olusegun Osadiya, Nurlan Seilov, Jacques Danquigny, David Foulon, Mariano F. Raverta
Unconventional Resources Technology Conference (URTEC)
...-wide challenge. Well performance and recoverable reserves are impaired when liquids drop out and load up the wellbore, creating a back-pressure effect...
2017