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The AAPG/Datapages Combined Publications Database
Showing 37,658 Results. Searched 200,293 documents.
ABSTRACT: Geological Aspects of Abnormal Reservoir Pressures in the Gulf Coast Region of Louisiana, United States of America
George Dickinson
GCAGS Transactions
... will probably not exceed ninety percent of the overburden pressure. The abrupt increase in pressure above normal hydrostatic pressure often occurs over a very...
1951
Abstract: The Origins of Abnormal Fluid Pressures
Norman E. Smith, H. George Thomas
GCAGS Transactions
... and in relation to potential energies within subsurface fluids. Various normal hydrostatic gradients are discussed, and a practical normal gradient...
1970
ABSTRACT: Distribution of Abnormal Pressure in Lower Vicksburg, Hinde Field, South Texas, by Kirk A. Barrell; #91030 (2010)
Search and Discovery.com
2010
Memoir 70, Chapter 9: Pressure Regimes and Pressure Systems in the Adriatic Foredeep (Italy)
AAPG Special Volumes
..., hydrostatic gradients, and good lateral hydraulic continuity. In the second region, in proximity of the outermost thrusts, overpressures are high...
1998
Abstract: Geopressures: Two Distinctly Different Kinds of Conditions, by P. E. Gretener and G. Bloch; #91012 (1992).
Search and Discovery.com
1992
Aquathermal Pressuring--Role of Temperature in Development of Abnormal-Pressure Zones: GEOLOGICAL NOTES
Colin Barker
AAPG Bulletin
... in terms of the geostatic ratio, which is the ratio of observed fluid pressure to the lithostatic pressure at the same depth. Normal hydrostatic pressures...
1972
Abnormal Formation Pressure
John S. Bradley
AAPG Bulletin
... is a pressure above or below the normal hydrostatic pressure for a given depth. It cannot exist without a seal, for without a seal, the pressures would equalize...
1975
Abstract: Statistical Distribution of Hydrocarbon Column Heights For Gulf of Mexico Trap Types and Seals, by J. C. Niemann; #90923 (1999)
Search and Discovery.com
1999
ABSTRACT: Statistical Distributions of Hydrocarbon Column Heights for Gulf of Mexico Trap Types and Seals
James C. Niemann, Chevron North American Exploration and Production Company
AAPG Special Volumes
... variety of traps and lateral seal combinations. Fault seal traps in sections with hydrostatic or low overpressure gradients (<14.8 kPa/m, <12.5 PPG...
2000
Abnormal Pressures in Lower Vicksburg, McAllen Ranch Field, South Texas: ABSTRACT
Robert R. Berg, Mark F. Habeck
AAPG Bulletin
... 4,000 ft (1,220 m) thick. The entire section is abnormally pressured, and gradients reach 0.94 psi/ft (21.2 kPa/m). Pressures within the section were...
1982
Definition, Identification, and Measurement of Normal and Abnormal Subsurface Pressures
Donald J. Timko, Lloyd C. Fons, William K. Grittman, Forest B. Rees
Houston Geological Society
... detection, measurement, and evaluation. Definitions Normal formation pressure at any given depth is defined as being equal to the hydrostatic pressure...
1971
Nature of Anomalously High Formation Pressures in Meso-Cenozoic Sediments of the Eastern Cis-Caucasus
A. G. Durmish’yan, V. D. Aslanov, B. L. Aleksandrov, T. R. Rakhmanov, F. G. Sharafutdinov
Petroleum Geology: A Digest of Russian Literature
... in the development of anomalously high formation pressure. I-Zone of normal formation pressures and moderate display of anomalously high formation pressures...
1977
The Interpretation of Fluids and Pressures in Determining Conventional and Unconventional Gas Resources in the Rocky Mountain Region
John R. Forster, John C. Horne
Rocky Mountain Association of Geologists
...., 1994). Pressures are described relative to normal hydrostatic pressure; pressures above the normal hydrostatic pressure are termed over-pressured, while...
2005
Modeling of Abnormal Fluid Pressure in Unconventional Plays Due to Uplift
Xinyu Xia, Jon Wallace, Liangui Du
Unconventional Resources Technology Conference (URTEC)
... gradients (0.025, 0.030, 0.035 ºC/m, covering typical thermal gradient of oil and gas basins) and initial pressure values (ratios to hydrostatic...
2013
"Petroleum Hydrogeology of the Jean Marie Member, Northeastern British Columbia [Abstract]"
Letourneau, J.P.
CSPG Bulletin
... pressures and 2000 to 7000 kPa below normal pore pressures. Formation damage is common on drill-stem tests because of the large pressure differentials...
1991
Distribution of Abnormal Pressure in the Vicksburg Formation, Hinde Field, Starr County, Texas
Kirk A. Barrell
Bulletin of South Texas Geological Society
.... Pressure can be equal to, higher than, or lower than normal or hydrostatic pressure (Dickinson, 1953). Abnormal pressure is formation pressure that differs...
1988
ABSTRACT: Geology and Genesis of Overpressured Sandstone Reservoirs in Venture Gas Field, Offshore Nova Scotia, Canada, by Lubomir F. Jansa and Victor H. Noguera; #91022 (1989)
Search and Discovery.com
1989
Methods of Estimating and Predicting Abnormal Formation Pressures
Vladimir A. Serebryakov
Montana Geological Society
... = normal hydrostatic pressure gradient; 2=calculated using the following equation: pa=gpw(h-0.8h1)-(aw)/(βp+βw...
1996
Central Sumatra Prospect Evaluation, Structural and Stratigraphic Fluid Barriers and Hydrodynamic Systems as Indicated by Wireline Formation Pressures
Richard R. Terres, Soejanto
Indonesian Petroleum Association
... 2. Central Sumatra wireline pressure data. Lines indicate hydrostatic gradients of 43 psi/ft. Dashed line is normal hydrostatic from sea level...
1995
A Review of the Methods of Detection and Estimation of Geopressure from Well Logs
Leonel L. Saavedra
Bulletin of South Texas Geological Society
... sediments, the “normal” hydrostatic pressure will be maintained. From previous studies in the Texas-Louisiana Gulf Coast, it has been shown...
1985
Reservoir vs. Seal Pressure Gradients: Calculations and Pitfalls; #41298 (2014)
Selim Simon Shaker
Search and Discovery.com
...) ^ X Where PP= predicted shale pore pressure, Ps= principal stress (overburden), Pn= hydrostatic pressure, ΔTn= normal sonic slowness (Figure 2), ΔTo...
2014
An enhanced method for evaluating the static connectivity of reservoirs using pressure coefficient–depth plots
Geng Qian, Haifeng Yang, Dayong Guan, Jinghan Wang, Junpei Yue, and Meng Zhao
AAPG Bulletin
...—and, consequently, the close alignment of pressure gradients, especially in normal hydrostatic reservoirs—discerning slight pressure differences becomes...
2025
ABSTRACT: Pore pressure prediction from seismic data for well planning in Block 22 Final
M. Bacon, N. Mundel, J. Hearne, R. Lubbe and S. O’Connor
Geological Society of Trinidad & Tobago
... vertical stress, derived from well density data and water depth, Ph is hydrostatic pore pressure (normal gradient 0.44 psi/ft), Vnorm is the velocity...
2007
Abstract: Geological Controls and Variability in Pore Pressure in the Deepwater Gulf of Mexico, by M. A. Smith; #90923 (1999)
Search and Discovery.com
1999
The Origins of Abnormal Fluid Pressures
Norman E. Smith, H. George Thomas
Houston Geological Society
... to potential energies within subsurface fluids. Various normal hydrostatic gradients are discussed, and a practical normal gradient for the Gulf Coast...
1971