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The AAPG/Datapages Combined Publications Database
Showing 3,929 Results. Searched 200,293 documents.
Investigation of Anomalously High Formation Pressure in the Paleozoics of the Peri-Caspian Depression when Exploring for Sub-Salt Oil Pools
G. A. Vylevskiy, N. Ya. Kunin, M. A. Tankibayev
Petroleum Geology: A Digest of Russian Literature
... shows vertical distribution of hydrostatic pressure. Gradients here are 15-40 atm/100 m. Where the iso-bars are close together the gradient is a few...
1979
Abstract: Effect of Non-Hydrostatic Pore Pressure from the Depth to the Base of the Hydrate Stability Zone, by Robert W. Lankston; #90078 (2008)
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2008
Hydrodynamics and Overpressuring in the Jeanne D'Arc Basin, Offshore Newfoundland, Canada: Possible Implications for Hydrocarbon Exploration: DISCUSSION
Dale R. Issler
CSPG Bulletin
... actual groundwater flow. Their analysis depends critically on the establishment of a reliable hydrostatic pressure gradient with which to compare...
1994
ABSTRACT Barostratigraphy for Basin Geopressure Analysis, #90104 (2010)
Croy Matthew J.; Wheeler James; Williams Kenneth
Search and Discovery.com
... pressure at a rate greater than hydrostatic but less than the lithostatic gradient. This is the most commonly observed seal type. Type B...
2010
Abstract: Effect of Non-Hydrostatic Pore Pressure on the Depth to the Base of the Hydrate Stability Zone; #90171 (2013)
Robert W. Lankston
Search and Discovery.com
... water and is about 5% less than the widely accepted value for hydrostatic pressure caused by brine, i.e., 0.0105 MPa/m. The brine gradient can...
2013
Effect of Non-Hydrostatic Pore Pressure from the Depth to the Base of the Hydrate Stability Zone
Robert W. Lankston
Search and Discovery.com
... for hydrostatic pressure, i.e., 0.0105 MPa/m. This gradient can be expressed as 8.94 lb/gallon mud weight. Using the larger factor for the gradient yields...
2008
Mechanical Versus Thermal Cause of Abnormally High Pore Pressures in Shales: DISCUSSION
Colin Barker , Brian Horsfield
AAPG Bulletin
... another (approximated by a shale). When elements are in permeable connection (approximated by a sand), the pressure gradient has to be hydrostatic...
1982
Fundamental Pressure Controls in Unconventional Petroleum Systems
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N/A
Reservoir vs. Seal Pressure Gradients: Calculations and Pitfalls
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Abstract: Paleo Overpressure in the Delaware Basin Determined from DST, Resistivity and Mud Logs
Mary Van Der Loop
Houston Geological Society Bulletin
... to pressure gradient data to define overpressured areas against a Permian Basin normal hydrostatic gradient of .48 psi/ft. AIFE Drill stem test data is scant...
2019
Paleo Overpressure in the Delaware Basin determined from DST, Resistivity and Mud Logs
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Paleo Overpressure in the Delaware Basin determined from DST, Resistivity and Mud Logs
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Modeling of Abnormal Fluid Pressure in Unconventional Plays Due to Uplift
Xinyu Xia, Jon Wallace, Liangui Du
Unconventional Resources Technology Conference (URTEC)
... between the fluid pressure and hydrostatic pressure is more than 1.2, it is referred to as overpressure. When the pressure gradient is less than 9.8...
2013
Attributes of Fluids in the Subsurface and Pressure Depth Gradient Plots: A Do-It-Yourself Exercise: GEOLOGICAL NOTE
Eric Dahlberg
CSPG Bulletin
... than the hydrostatic pressure gradient would predict (their gradients lie to the right of the hydrostatic brine gradient) because of buoyancy...
1979
Abstract: A New Exploration Approach in the Search for Anomalously Pressured Hydrocarbon Accumulations in the Neuquen Basin, Argentina, by F. Fernandez-Seveso and R. C. Surdam; #90942 (1997).
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1997
Pressure Regime and Hydrodynamic Study of Niger Delta Coastal Swamp: Implication for Hydrocarbon Recovery and Production
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Pressure Stratigraphy in Deep Marine Sediments, by Kenneth E. Williams and Martin D. Matthews; #90052 (2006)
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2006
Pore Pressure Prediction: Geological Perceptions
S. Shaker
Houston Geological Society Bulletin
... at the shallow up-dip flanks where coarse deposits dominate. In this case the pressure profile is represented by a hydrostatic gradient at the shallow...
2002
ABSTRACT: The Nature and Diversity of Pressure Transition Zones, by Richard E. Swarbrick and Mark J. Osborne; #91019 (1996)
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1996
Aquathermal Pressuring--Role of Temperature in Development of Abnormal-Pressure Zones: GEOLOGICAL NOTES
Colin Barker
AAPG Bulletin
... of the formation fluids which follow the normal hydrostatic gradient are related by the geothermal gradient, so that for any given temperature the pressure...
1972
Abstract: Geopressures: Two Distinctly Different Kinds of Conditions, by P. E. Gretener and G. Bloch; #91012 (1992).
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1992
Abstract: The Nature of Seals in a Large Underpressured Gas System, San Juan Basin, New Mexico ; #90055 (2006).
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2006
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
... and efficient drilling operations. TABLE OF CONTENTS Introduction 21 Definitions 21 Hydrostatic Pressure 21 Pressure Gradient 21 Overburden...
1971
Regional Map of the 0.70 psi/ft Pressure Gradient and Development of the Regional Geopressure-Gradient Model for the Onshore and Offshore Gulf of Mexico Basin, USA
Lauri A. Burke, Scott A. Kinney, Russell F. Dubiel, Janet K. Pitman
GCAGS Journal
... subsurface of the Gulf Coast, pressure gradients generally follow a hydrostatic pressure-gradient trend (Fig. 2). A normal or hydrostatic gradient represents...
2012
Mechanisms for Generating Overpressure in Sedimentary Basins: A Reevaluation
Mark J. Osborne and Richard E. Swarbrick
AAPG Bulletin
... that of the hydrostatic gradient at a specific depth. The hydrostatic pressure gradient is the pressure that would be exerted by a continuous column of static fluid...
1997