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Showing 3,937 Results. Searched 200,619 documents.
Parameters Influencing Porosity in Sandstones: A Model for Sandstone Porosity Prediction
M. Scherer
AAPG Bulletin
...% porosity for every 1,000 psi (6.9 MPa) above hydrostatic pressure. Because of the relationship between compaction and cementation, cement does...
1987
Basin Modeling of Tadla Basin, Morocco, for Hydrocarbon Potential
Haddou Jabour , Kazuo Nakayama
AAPG Bulletin
... one carrier bed with hydrostatic pressure exists within each cell. The pressure gradient for Darcy's law is defined as the difference between pore...
1988
Impossibility of Bernoulli Pressure Forces on Particles Suspended in Boundary Layers: DISCUSSION
John B. Southard
Journal of Sedimentary Research (SEPM)
...Impossibility of Bernoulli Pressure Forces on Particles Suspended in Boundary Layers: DISCUSSION John B. Southard 1970 Vol. 40 No. 1. (March...
1970
Regional Fractures I: A Mechanism for the Formation of Regional Fractures at Depth in Flat-Lying Reservoirs (1)
JOHN C. LORENZ , LAWRENCE W. TEUFEL , and NORMAN R. WARPINSKI
AAPG Bulletin
... conditions necessary for low rock strength and brittle deformation can occur at any depth if the pore pressure exceeds the normal hydrostatic gradient...
1991
Underbalanced Drilling - Workshop Summary
William Rehm, Greg Chitty, Don Purvis
PTTC
... into a parasite string, and use of foam. Lightweight Drilling Fluids. The simplest mechanism to reduce hydrostatic pressure in the wellbore is the use...
2001
Resource Development/Utilization: Development and Utilization of Geopressured Geothermal Resources in the South-Central United States
David B. Lombard
Houston Geological Society
... permeable sands, any such gradient would quickly be reduced to hydrostatic by the flow of formation fluid. Figure 2. Section of idealized reservoir model...
1977
Physico-Chemical Factors Affecting the Solubility of Calcium Carbonate in Sea Water
Roger Revelle
Journal of Sedimentary Research (SEPM)
..., hydrostatic pressure, and carbon dioxide content. Although the experimental results obtained by various workers for the solubility product...
1934
Hydrate Stability Zone Permanence along Dynamic Louisiana Offshore
Allen Lowrie , Michael D. Max , Rhett Hamiter , Ian Lerche , Elchin Bagirov
GCAGS Transactions
... without re-establishing equilibrium, the hydrate base rises as the hydrate thins and a lower hydrostatic pressure maintains hydrate equilibrium. Thus...
1997
Diagenesis of Sandstone Reservoirs of Pattani Basin, Gulf of Thailand
A. S. Trevena, R. A. Clark
AAPG Bulletin
... with burial depth. Formation fluid pressure is generally hydrostatic above about 2,135-2,285 m (7,000-7,500 ft) and overpressured below this depth...
1986
Effect of Hydrocarbon Production and Reservoir Depressurization on Subsidence: Port Neches Field Area, Southeast Texas
Wang, Fred P. and Nance, H. Seay
GCAGS Transactions
... pressure trends. Data between the lithostatic and hydrostatic lines are from geopressured reservoirs that are seen in reservoirs deeper than 8,000 ft...
2002
Effect of Pleistocene Depositional Heterogeneity on Movement of a Subsurface Crude-Oil Spill, San Patricio County, South Texas
Dutton, Alan R., Hovorka, Susan D., Bennett, Philip C.
GCAGS Transactions
... drive as is typical of the Frio barrier/strandplain sandstone play. Fluid pressure was above hydrostatic level; recovery of fluid pressure to near...
2002
Long-Range Petroleum Migration in the Illinois Basin (1)
CRAIG M. BETHKE , JACKIE D. REED , and DONALD F. OLTZ
AAPG Bulletin
... is the deviation in pressure from a hydrostatic gradient. Groundwater moves from areas of high to low potential (i.e., toward areas of lower mechanical...
1991
Sedimentology and Reservoir Characterization of the Wagon Wheel Formation from Seismic, Log, and Core Data in Pinedale Field, Wyoming
Mark A. Chapin, Andrew Govert
AAPG Special Volumes
... is water bearing. The pressure gradient starts to deviate above hydrostatic below the unconformity separating the upper and lower Wagon Wheel...
2014
Fluid Flow, Pore Pressure, Wettability, and Leakage in Mudstone Cap Rocks
Andrew C. Aplin, Steve R. Larter
AAPG Special Volumes
... line is the lithostatic pressure, the solid line is the hydrostatic pressure, and pore pressures determined with the Repeat Formation Tester are shown...
2005
Marine Seismic Sources: Part III: A Feeling for Decibels
Lasse Amundsen, Martin Landrø
GEO ExPro Magazine
... density and p h is the hydrostatic pressure in water. This means Examples Undersea earthquake (magnitude 4.0 on Richter scale) References S J Parvin...
2010
Offshore Evaluation of Hydrogen Sulfide Reservoirs
A. G. Edwards
Indonesian Petroleum Association
... the annular hydrostatic pressure at this point. This opens the reversing port so that once the drill pipe pressure is released, reversing out can be started...
1975
Influence of tectonic exhumation on porosity of Wufeng–Longmaxi shale in the Fuling gas field of the eastern Sichuan Basin, China
Rui Liu, Fang Hao, Terry Engelder, Zhiguo Shu, Jizheng Yi, Shang Xu, and Changyu Teng
AAPG Bulletin
...; with a pressure gradient of up to 18 MPa/km [0.8 psi/ft]; Jarvie, 2012; Klaver et al., 2015) (Figure 1B). However, exhumed shales commonly show low...
2020
The Origin of Jonah Field, Northern Green River Basin, Wyoming
Robert M. Cluff, Suzanne G. Cluff
AAPG Special Volumes
...-pressure gradient of 0.494 psi/ft (11.2 MPa/km). Below the top of flare, the operators commonly mud up to 9.710 lb/gal (11601200 kg/m3) and, in many wells...
2004
Optimized Production in the Bakken Shale: South Antelope Case Study
David R. West, John D. Harkrider, Michael Barham, Monte R. Besler, Kenneth D. Mahrer
Unconventional Resources Technology Conference (URTEC)
... closure pressure, fracture gradient, fluid leakoff coefficient, fluid efficiency, formation permeability and reservoir pressure. Performed prior to every...
2014
Recent Developments in Subsidence
Richard S. Strehle
Pacific Section of AAPG
... drawn down to a few hundred psi in the 1940s and 1950s. Repressuring to 80 or 90 percent of hydrostatic pressure will allow the oil reservoirs...
1996
Pore Pressure Prediction and Its Relationship to Structural Style in Offshore Tarakan Sub-Basin, Northeast Kalimantan
Perdana Rakhmana Putra, Tasiyat, Benyamin Sapiie, Agus M. Ramdhan
Indonesian Petroleum Association
... on sonic log data trend, mud weight used during drilling, and direct pressure measurements, it can thus be concluded that this well is in hydrostatic...
2017
Unconventional Resource Play Potential of the Pennsylvanian Leo/Minnelusa Formations of the Powder River and Denver Basins: A Perspective via Integrated Petroleum Systems Analysis, #10916 (2017).
Michael Cheng, Tony Kratochvil, Jeff Dunleavy, Brian Hebler, Roy Fitzsimmons
Search and Discovery.com
...). The reservoir pressure generally is at or below hydrostatic condition, consistent with observed porosity vs. permeability data and the aforementioned...
2017
Chapter 13: The Zama Discovery in Salina del Istmo Basin, Offshore Tabasco: “A New Dawn” for Offshore Mexico Exploration
David Kosmitis, John Parker, Michael Albertson, Alex Obvintsev, David Tett, James Pasley, Matthew Carr
AAPG Special Volumes
.... The base of the reservoir section coincides with a significant middle Miocene unconformity related to salt tectonics. Pressure gradient data...
2021
Influence of Stratigraphic Modeling Scales on Shale Oil Resources Assessment of the Midland Basin
Robin Dommisse
GCAGS Journal
..., identified the Wolfcamp as an overpressured reservoir since the pressure gradients are greater than the hydrostatic gradient. Historically, the Spraberry...
2022
Application of Infinite Slope Analysis to Subaqueous Sediment Instability, Mississippi Delta: Appendix 5-2
David B. Prior, Joseph N. Suhayda
AAPG Special Volumes
... and are evaluated using infinite slope analysis. For instability to occur, pore water pressure ratios in excess of hydrostatic (u/wz) and approaching...
1981