Relating shale thickness to seal potential

Justin Palmer

International Meeting for Applied Geoscience and Energy (IMAGE)

... Exploration Summary Method A new algorithm investigates differences in sand pore pressure gradient across shale intervals to understand how shale thickness...

Experimental Deformation of Sedimentary Rocks Under Confining Pressure: Pore Pressure Tests

John Handin , Rex V. Hager, Jr. , Melvin Friedman , James N. Feather

AAPG Bulletin

..." formation pressure is equivalent to the hydrostatic head in a column of water from the surface to any particular depth, so the pressure gradient...

Movements of Ground Water

O. E. Meinzer

AAPG Bulletin

... of a liquid out or through a formation requires a hydraulic gradient; that is, the available pressure is dist ibuted over the entire path of the moving...

Large-Scale Pore Pressure Prediction After Pre-Stack Depth Migration in the Caspian Sea (Geophysics Paper 24)

Norbert van de Coevering, Hazim Hameed Al-Dabagh, Liau Min Hoe, Tony Jolly

Geological Society of Malaysia (GSM)

... reliable. The pressure model parameters need to ensure predictions above the hydrostatic pressure (~ 9 ppg). It seems from the analysis however...

Stress Determination in Overpressure Zone of East Java Basin

Sena W. Reksalegora, Lambok M. Hutasoit, Agus H. Harsolumakso, Agus M. Ramdhan

Indonesian Petroleum Association

... of overpressure is located within that depth interval. This study uses normal hydrostatic pressure gradient of 0.433 psi/ft. The top of overpressure...

Abstracts: Physics of Buoyancy, Pressure Potential and Buoyancy Reversal for CO2 and Hydrocarbon Migration; #90173 (2015)

K. Udo Weyer

Search and Discovery.com

... difference between hydrostatic conditions (Figure 1) and hydrodynamic ones. In the hydrostatic case the gravitational force and the pressure potential...

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

Ole Valdemar Vejbaek

AAPG Bulletin

...-pressure gradient gradually becomes parallel to the normal pressure hydrostatic gradient. For this reason, an effective stress minimum (as given...

Flow Regimes and Solute/Energy Transport

Jeffrey S. Hanor

Special Publications of SEPM

... / a z # -pz. If the vertical pressure gradient exceeds the gravitational body force, then flow can occur in the up direction. will occur downward...

Geomechanical Risk Investigation of Geological Sequestration of CO2 in Depleted Reservoirs

Avirup Chatterjee, Ahmadreza Younessi

Indonesian Petroleum Association

... in 1D geomechanical models, the virgin pore pressure in the field were close to hydrostatic pressure in the modelled zones. A hydrostatic pore...

Prediction of Abnormal Pressure Based on Seismic Data: A Case Study of Exploratory Well Drilling in Pertamina UEP I and UEP II Work Areas

P. Manik, P. A. Soedaldjo

Indonesian Petroleum Association

... as this process is not interrupted and the water remains in the formation then the pressure of the formation will be normal (hydrostatic pressure...

Petroleum Hydrogeology

Parke A. Dickey

Tulsa Geological Society

... of the subsurface water. These facts suggest that the pressure is slightly above hydrostatic which would be expected if the water was being very slowly...

Temperature, Pressure, and Fluid Composition Conditions of Fracture Cementation in the Brooks Range Fold-Thrust Belt, Arctic National Wildlife Refuge, Alaska, by T.M. Parris, R.C. Burruss, #90027 (2004)

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Induced AVO Anomalies from Pore Pressure Effects

A.C. Buginga Ramos, M.A. Santiago Toledo

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... the sedimentary sucession is under hydrostatic pressure regime. Frequently, however, AVO signatures can be quite ambiguous causing the need for well/seismic...

Origin of Reservoir Fractures in Little Knife Field, North Dakota

W. Narr , Robert C. Burruss

AAPG Bulletin

...), which indicates their age is post-Mesozoic; (2) the pore-fluid pressure gradient was normal hydrostatic immediately after, if not during, fracture...

Overpressures in the Anadarko basin, southwestern Oklahoma: Static or dynamic?

Youngmin Lee, David Deming

AAPG Bulletin

... pressures above hydrostatic start at a depth of about 2.5 km. On a normalized scale where hydrostatic pressure equals 0 and lithostatic pressure equals 1...

Hydrogeologic Aspects of Structural Deformation in the Northern Gulf of Mexico Basin

Paul H. Jones, Raymond H. Wallace, Jr.

New Orleans Geological Society

... County, Tex., illustrate the temperature rise associated with a pressure gradient change under geopressured conditions. The geothermal gradient map...

Rock Physics Driven Seismic Modeling of CO2 Injection in a Carbonate Reservoir from Canada, #80485 (2015).

Malleswar Yenugu, Ben Hardy, Alan Mur, Jeremy Gallop, Cristian Malaver

Search and Discovery.com

... on a hydrostatic gradient with no overpressure effects. • That baseline water salinity was 85000ppm while monitor salinity was 100000ppm. • Baseline Oil API...

Constraining the Timing of Tectonic Compression of the Tianshan Mountain From Reservoir Pressure Evolution in the Kuqa Foreland Basin, NW China

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Depths of Oil Origin and Primary Migration: A GEOLOGIST'S DISCUSSION

Richard E. Chapman

AAPG Bulletin

... gradient. The normal hydrostatic pressure gradient is not a barrier (or even an impediment) to the migration of fluid down the flank of an anticline...

Geothermal Drilling … An Overview

Bonar Marbun, Samuel Zulkhifly, Irfan Hariz, Dita Khairina

Indonesian Petroleum Association

... removal of solid cuttings, decreases hydrostatic pressure at the bit face, and reduces stress in the rock being drilled (actually, the formation stress...

Extreme Overpressures and Anomalous Fluid Densities from RFT Pressure Surveys in Papua New Guinea Wells: Some Results and Implications

B. Kota, D. Trattner, P. Woyengu, P. K. Webb

Papua New Guinea (PNG) Petroleum Convention Proceedings

... shows the theoretical hydrostatic pressure gradient in each well calculated from the water table. lo v O’S/iJ^ 9 'S liJ o 0. (t UJ > LU (0 (0 0^ D...

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

... suggests that gas generation, if acting in isolation, produces a maximum pressure gradient of 15.2 MPa/km (0.672 psi/ft), and not lithostatic magnitudes...

Challenges in Pore Pressure Prediction for Unconventional Petroleum Systems, #42018 (2017).

Changrui Gong, Lucia Rodriguez

Search and Discovery.com

... that an increase of pore pressure gradient by 0.04 psi/ft will lead to increase in production rate by 150%, and ultimate recoverable volumes by 73%. Thus...

Improving Depth Prediction Accuracy of Quantified Drilling Hazards

W. Scott Leaney, William H. Borland

Geological Society of Malaysia (GSM)

... at depth. It is generally between lithostatic pressure and hydrostatic pressure. Lithostatic pressure refers to the total weight of material...

Pressure Seal and Deep Overpressure Modelling in the Barrow Sub-Basin, North West Shelf, Australia

S. He, M. Middleton

Petroleum Exploration Society of Australia (PESA)

...-day overpressure would be returned to hydrostatic pressure in about 100,000 years assuming a Jurassic shale interval of3000 m thickness...