Hydrodynamics of the Fountain and Casper Formations, Laramie Basin, Wyoming

Richard W. Davis

Wyoming Geological Association

... information, suggest some interesting phenomena are occurring. There are three areas which show higher than normal thermal gradients. The first is a high...

Stability of Natural Gas in the Deep Subsurface: Thermodynamic Calculation of Equilibrium Compositions

Nicholas E. Takach , Colin Barker , Marwin K. Kemp

AAPG Bulletin

... surface temperature was taken as 20°C (68°F). Pressure "Normal" or "hydrostatic" pressure in subsurface fluids is equal to the weight of a column...

Abstract: Seismic Guided Pore Pressure Prediction In Deepwater Block Of Mahanadi Basin; #90315 (2017)

Surya Kumar Singh, Kumar Vivek, Pinaki Basu, B.K. Mangaraj, Hari Lal

Search and Discovery.com

... interval velocity were extracted and Pore pressure is computed at these wells using parameters computed for Well-A. Subsequently, Hydrostatic pressure...

Origin and Distribution of Overpressure in the Northern Malay Basin, #41103 (2012)

Mark Tingay, Chris K. Morley, Andrew Laird, Orapan Limpornpipat, Kanjana Krisadasima, Hamish Macintyre, Suwit Pabchanda

Search and Discovery.com

... magnitude increases towards the basin-centre, with maximum pore pressure gradients of >19.0 MPa/km observed in the southeast part of the study area...

Disequilibrium compaction as the cause for CretaceousPaleogene overpressures in the Danish North Sea

Ole Valdemar Vejbaek

AAPG Bulletin

... by properties in the upper portion where pressure gradients relative to hydrostatic are largest (cf. Muggeridge et al., 2005). Because changes in effective...

Abstract: Abnormal Pressure in the Precaspian Basin: Transition Zones Distribution, by L. Anissimov, K. Golovin, and M. Kalinnikova; #90942 (1997).

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Difference in overpressure environments for the western and central deep-water Gulf of Mexico

Sharon Cornelius and Peter A. Emmet

AAPG Bulletin

... in situ pressure. Overpressure is pressure in excess of local hydrostatic pressure at a given depth, which for the GOM is 0.465 psi/ft. For this study...

Deep Pore Fluid Pressure Prediction in Challenging Areas, Malay Basin, SE Asia

Stephen O’Connor, Richard Swarbrick, Jamaal Hoesni, Richard Lahann

Indonesian Petroleum Association

... to the current Lange pore pressure profile in Well 6406/2-3 are illustrated in Figure 7 (GPT/IHS, 2007). The blue line on the left is the hydrostatic (normal...

Subsurface Water Flow Patterns in the Canadian Sector of the Williston Basin

Norbert Hannon

Rocky Mountain Association of Geologists

... and hydrocarbon occurrences, Alberta, Canada: AAPG Bulletin, v. 68, n. 6, p. 713-743. Petroleum Research Corporation, 1958, Capillary pressure under hydrostatic...

Laboratory Sands and Natural Siliciclastic Sandstones: Implications for the Behaviour of Reservoirs; #42165 (2017)

Amanda Murphy, Kenichi Soga, Koji Yamamoto

Search and Discovery.com

... is increased; however, in hydrostatic loading the three principal stresses are increased uniformly with constant pore pressure (throughout loading σ1 = σ2...

Standardizing Offset Pressure Characterization for Infill Completion in Unconventional Reservoirs

Justin Mayorga, Erica Coenen

Unconventional Resources Technology Conference (URTEC)

... and volumes pumped. In addition, maximum pressure gradients of measured offset pressures are binned to qualify fluid migration distances for given...

Gravity-Driven Consolidation of Granular Slurries--Implications for Debris-Flow Deposition and Deposit Characteristics

Jon J. Major

Journal of Sedimentary Research (SEPM)

... composition. Fluid pressure in excess of hydrostatic pressure dissipated within tens of seconds to several minutes in sandy-gravel deposits that contained...

Compartmentalization of Overpressured Reservoirs in the Anadarko Basin, by Z. Al-Shaieb, J. Puckette, and A. Close; #90903 (2001)

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Geomechanical Risk Investigation of Geological Sequestration of CO2 in Depleted Reservoirs

Avirup Chatterjee, Ahmadreza Younessi

Indonesian Petroleum Association

... pressure cube in 3D is prepared from the 1D hydrostatic normal pressure profiles as derived from the 1D geomechanical models. The pore pressure over...

Pressures, Seals and Traps

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Lateral Fluid Flow in a Compacting Sand-Shale Sequence: South Caspian Basin

John D. Bredehoeft , Rashid D. Djevanshir , Kenneth R. Belitz

AAPG Bulletin

... in the world are known to contain fluid pressures significantly in excess of hydrostatic pressure. This condition is known by various names: "geopressure...

Pore pressure patterns in Tertiary successions and hydrodynamic implications, Beaufort-Mackenzie Basin, Canada

Zhuoheng Chen, Kirk G. Osadetz, Dale R. Issler, Stephen E. Grasby

CSPG Bulletin

... when no DST pressure readings were available. In this study, characteristic pressure gradients are used to define normal pressure (9.8–11.5 kPa/m...

Microfracture Development in Compacting Sediments: Relation to Hydrocarbon-Maturation Kinetics

V. V. Palciauskas, P. A. Domenico

AAPG Bulletin

... of a regional stress field and the fluid pressure through the linear relation EQUATION (4) where ^sgr is the hydrostatic component of the stress tensor...

Two Practical Methods to Determine Pore Pressure Regimes in the Spraberry and Wolfcamp Formations in the Midland Basin

Mickey Friedrich, Gene Monson

Unconventional Resources Technology Conference (URTEC)

.... These pressures identify the Wolfcamp as an overpressured reservoir since the pressure gradients are greater than that caused by a hydrostatic column...

3D Pore Pressure Prediction Model in Bentu Block … Central Sumatra Basin; #41105 (2012)

Wawan A. Behaki, Aldyth Sukapradja, Ronald C. Siregar, Radig Wisnu Y, Setiabundi Djaelani, and Benny A. Sjafwan

Search and Discovery.com

... (overburden/lithostatic pressure); Pn is the normal or hydrostatic pressure; Aobs is the observed attribute (sonic, resistivity etc); Anorm...

HYDRODYNAMIC FLOW IN LOWER CRETACEOUS MUDDY SANDSTONE, GAS DRAW FIELD, POWDER RIVER BASIN, WYOMING

Joseph T.C. Lin

Rocky Mountain Association of Geologists

.... The hydrostatic head was calculated from the orig~nalfluid pressure by using a constant pressure gradient of 0.433 psi/ft. Fluid pressure measurement...

A Viscoplastic Stress Relaxation Model for Predicting Variations of the Least Principal Stress With Depth in Unconventional Reservoirs; #41999 (2017)

Shaochuan Xu, Mark D. Zoback

Search and Discovery.com

... viscoplastic stress relaxation plot as in Figure 5 assuming near hydrostatic pore pressure. In Figure 5, each data point is a measured n and B...

Depositional Environment Drive as Overpressure Generation: Study Case in GapŽ Field, North West Java Basin

Anggit Chandra Prasetyo, Alfian Gilang, Putra Nurramdhan, Thomas Cafreza, Syaifuddin

Indonesian Petroleum Association

... is pore pressure, 𝜎 𝑣 is vertical stress, 𝑃 𝑛 is hydrostatic pressure, 𝛥𝑡 𝑛 is sonic on NCT (normal compaction trend), 𝛥𝑡 is value of sonic...

Geological Implications of Overpressure and Fracture Gradients in Deepwater Fold-and-Thrust Belt, Offshore Malaysia

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Hydrodynamic effects on low-dip stratigraphic traps

S. A. Stewart

AAPG Bulletin

... and fluid distribution cases in simple structures (A–D) and stratigraphic traps (E, F). The pressure-depth chart sketches depict gradients of water (W...