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The AAPG/Datapages Combined Publications Database
Showing 3,929 Results. Searched 200,357 documents.
Regional Pressure Patterns as Evidence for Fractured Reservoirs in the Bowdoin and Phillips Sandstones on Bowdoin Dome, Montana
George W. Shurr, Frederick D. Wosick, Dudley D. Rice
Montana Geological Society
... on the main dome (Figs. 8 and 9). Pressure gradient data are hand contoured and shown with the grid of Landsat linear features in Figure 10. The pressure...
1993
Drilling Safely at Well Design Limits - A Critical Well Design Case History
J. B. Muchtar, R. Quitzau
Indonesian Petroleum Association
...) indicated pressure gradients up to 16.00 ppg above the objective. A gradient reversal was expected in the objective. Pressure gradients below...
1991
Evolution of overpressure in the Wufeng-Longmaxi shale reservoirs of the Jiaoshiba area, Sichuan Basin, southwestern China: Implications for shale gas preservation
Tao Luo, Xiaowen Guo, Zhiliang He, Kamaldeen O. Omosanya, Ze Tao, and Sheng He
AAPG Bulletin
... Wufeng Formation and lower Silurian Longmaxi Formation. The pressure coefficients, the ratio of the actual pore pressure to the normal hydrostatic...
2024
Hydraulic, water quality, and isotopic characterization of Late Cretaceous–Tertiary Ardley coal waters in a key test-well, Pembina–Warburg exploration area, Alberta, Canada
S.M. Harrison, T. Gentzis, M. Payne
CSPG Bulletin
... the theoretical hydrostatic gradient. Figure 6. Pressure vs. Depth Test-well plots as slightly underpressured to the theoretical freshwater gradient of 9.8 kPa/m...
2006
Permeability Controls on Aquathermal Pressuring
John M. Sharp, Jr.
AAPG Bulletin
... ^agrr is the compressibility of the mineral grains. The fluid pressure (p) is the sum of the hydrostatic (ps) and excess (u) pore-fluid pressures...
1983
Petroleum Expulsion and Formation of Porosity in Kerogen; #42388 (2019)
Alton Brown
Search and Discovery.com
... to 5 km. With an overburden stress gradient of 24 MPa/km and hydrostatic pressure gradient of 10 MPa/km, “normal” effective stress gradient is about 14...
2019
Geomechanical Properties of the Upper Ordovician Macasty Shale and its Caprock, Anticosti Island: A Regional Evaluation for a Promising Tight Oil Play, #80542 (2016).
Denis Lavoie, Stephan Sejourne
Search and Discovery.com
... of Sh min 0 5000 10000 Pressure (kPa) 15000 20000 25000 30000 35000 0 Vauréal 200 Hydrostatic Pressure Pore Pressure from Mud 600 Vertical...
2016
Magnitude, mechanisms, and prediction of abnormal pore pressure using well data in the Krishna–Godavari Basin, east coast of India
Sumangal Dasgupta, Rima Chatterjee, and Sarada Prasad Mohanty
AAPG Bulletin
.... Hydrostatic pressure is defined as the pressure exerted by a continuous column of static fluid. Slight variation in this pressure depends on the density...
2016
Influence of Natural Fractures on Hydraulic Stimulation in Geothermal Reservoirs: Insights from Utah FORGE Coupled Hydro-Mechanical Modeling
Hafssa Tounsi, Branko Damjanac, Zorica Radakovic-Guzina, Wei Fu, Aleta Finnila, Pengju Xing, Robert Podgorney, John McLennan
Unconventional Resources Technology Conference (URTEC)
... losses within the wellbore. Hydrostatic pressure was calculated based on fluid density and injection depth, while frictional losses were estimated...
2025
Wrenching and Oil Migration, Mervine Field Area, Kay County, Oklahoma
Harold G. Davis, III
Oklahoma City Geological Society
..., underpressured gradients. 8) Fluid pressure gradients slightly exceeding the normal hydrostatic gradient occur in synclinal areas peripheral to the Mervine...
1985
Interstitial Water Composition and Geochemistry of Deep Gulf Coast Shales and Sandstones
Gene W. Schmidt
AAPG Bulletin
... is not hydrostatic but abnormally high (increases from the normal 0.465 psi/ft pressure gradient). The abnormally high pressures apparently...
1973
The Growth History of Toe Thrusts of the Niger Delta and the Role of Pore Pressure
Scot W. Krueger, Neil T. Grant
AAPG Special Volumes
... for the well. The lithostatic stress was calculated by integrating bulk-density log data. Hydrostatic pressure was calculated from a gradient...
2011
Hydrodynamic aquifer or reservoir compartmentalization?
Ann Muggeridge, Hisham Mamode
AAPG Bulletin
... in the aquifer, we can assume that the vertical pressure gradient at any location is hydrostatic (Coats et al., 1971). In this case, we can writewhere the OWC...
2012
In situ stress in the Peace River Arch area, Western Canada
J. S. Bell, R. E. McCallum
CSPG Bulletin
... to the formation pore pressure (the hydrostatic gradient is 9.81 Table 1. Magnitudes of SHmin measured and estimated in 41 wells in the Peace River Arch area...
1990
Dehydration Reactions
W. S. Fyfe
AAPG Bulletin
...-T gradient of 15 atm/°C. The dehydration boundary then will cut the regional P-T gradient at a steep angle and the vapor pressure will rise rapidly to equal...
1973
Predrill Prediction of Formation Pressure Using Seismic Data: A Case of Huaguang Depression, Northern South China Sea
Search and Discovery.com
N/A
Downhole Geochemical Analysis of Gas Content And Critical Desorption Pressure for Carbonaceous Reservoirs, by Robert A. Lamarre, #40217 (2006).
Search and Discovery.com
2006
Post-Paleocene Evolution of Regional Groundwater Flow-Systems and Their Relation to Petroleum Accumulations, Taber Area, Southern Alberta, Canada
J. Toth, T. Corbet
CSPG Bulletin
... pressure-increase lower than, equal to, and greater than hydrostatic when related to the topographic elevations of the three localities (Figs. 10C, B...
1986
Tocito Dome Mississippian, North (Helium), T. 27 N., R. 18 W., NMPM, San Juan County, New Mexico
Elliott A. Riggs
Four Corners Geological Society
... that the bottom-hole pressure must have been greater than hydrostatic to unload the hole. Pressures in excess of hydrostatic are uncommon in the Colorado...
1978
Geothermal Exploration in West Java
Solia Wiradiradja, Surahman Suari, Yunus Razali, L. Pekar
Indonesian Petroleum Association
... drillings are reproduced again on fig. 13, together with the theoretical boiling point curve, assuming, that hydrostatic pressure was reached...
1976
Developing a representative model for offshore CO2 storage in the Gulf of Mexico continental shelf
Lars W. Koehn, Brian W. Romans, Ryan M. Pollyea
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the model based on the heat flux map produced by Blackwell et al. (2011). A hydrostatic pressure gradient of 0.465 psi/ft (10,518.6 Pa/m) was used...
2022
Naturally Occurring Underpressure — A Global Perspective
Search and Discovery.com
N/A
Origin of the Raised Rim in the Kashagan Buildup, Kazakhstan: A Hypothesis for Diagenesis Associated With Fractures and Burial Compaction
Search and Discovery.com
N/A
3.0 General Ramifications of Abnormal Pore Pressures
P. E. Gretener
AAPG Special Volumes
.... Plotting porosities versus the fluid pressure gradient he finds that for dp/dz = 0.5 psi/ft p20,000 ft = 19% and for dp/dz = 0. 8 psi/ft p20,000 ft = 23...
1981