Conceptual Model for Origin of Abnormally Pressured Gas Accumulations in Low-Permeability Reservoirs

B. E. Law, W. W. Dickinson

AAPG Bulletin

...) pressure to rise above the regional hydrostatic pressure. Within the overpressured gas generation zone, free water in the larger pores is forced out...

Application of New Optical Sensor Based on Integrated Computational Element Allows Fluid Characterization in Complex Environments - Case Studies

Muhammad Bagir, Mahadevan Iyer, Arina

Indonesian Petroleum Association

... to evaluate fluid typing through pressure gradient analysis. Case 1 – Challenge: Compartmentalization, fresh water reservoir, and heavy oil formation. Four...

Novel Pore Pressure Prediction Technique for Unconventional Reservoirs

David Yale, Adriana Perez, Robert Raney

Unconventional Resources Technology Conference (URTEC)

...) and the hydrostatic pore pressure (Phyd) and the measured compressional velocity (Vp-meas) and the extrapolated normal pressure trend of Vp (Vp-NPT...

The Role of Faulting in Northern Carnarvons Sub-Basins in Transferring Very High Overpressure

Edward Hoskin, Jakob Heller

Australian Petroleum Production & Exploration Association (APPEA) Journal

... of overpressure and, as such, create a wide range of pore pressure conditions from hydrostatic pressure to overpressure levels approaching values of vertical...

Reservoir Engineering Aspects of Coalbed Methane: Chapter 16

J. E. McElhiney , G. W. Paul, G. B. C. Young, J. A. McCartney

AAPG Special Volumes

... in capillary pressure, the pressures of the wetting and nonwetting phases could account for the gas desorption pressure being less than the hydrostatic...

Lithologically Controlled Pore Pressure Prediction and Geomechanical Modeling Using Probabilistic Multivariate Clustering Analysis and an Expert System

Alan A. Curtis, Eric Eslinger, Randy Nickerson, Siva Nookala, Francis Boyle

Unconventional Resources Technology Conference (URTEC)

... the full depth profile of well BSp-4 in Figure 17. Using these values as input data, it is then possible to calculate the hydrostatic pressure...

Comparison Between Compressibilities of Sands and Clays

George V. Chilingarian, C. T. Sawabini, Herman H. Rieke, III

Journal of Sedimentary Research (SEPM)

... hydrostatic pressure pt of 3,000 psi. Hall showed that as porosity increases, the "effective" rock compressibility decreases. Hall (1953, p. 310) applied...

Analysis of Overpressure Zones at the Southern Margin of the Baram Delta Province and Their Implications to Hydrocarbon Expulsion, Migration and Entrapment

Aristeo Mantaring, Fumiaki Matsuda, Masanori Okamoto

Geological Society of Malaysia (GSM)

...· MANTARING, ARISTEO, MATSUDA, FUMIAKI AND OKAMOTO, MASANORI 186 hydrostatic pressure regime, EMW 1.00 SG. These sections have porous sandstone beds...

Porous Sandstone Deformation: Investigating the Effect of Induced Pore Pressure Increase on Stress Path Evolution under Undrained Conditions

Buhari U. Ardo, Ernest H. Rutter, Julian Mecklenburgh

International Meeting for Applied Geoscience and Energy (IMAGE)

... pressure. Hydrostatic compression tests with concomitant pore volumometry were run on dry cylindrical samples with nominal diameter of 25 mm and a length...

ABSTRACT: Pressure Prediction in the Shallow Ursa Basin: Deepwater Gulf of Mexico

Peter B. Flemings, Hui Long

GCAGS Transactions

... with pore-pressure penetrometers during Integrated Ocean Drilling Program (IODP) Expedition 308 reach 70% and 60% of the hydrostatic effective...

Influence of Depth, Temperature, and Geologic Age on Porosity of Quartzose Sandstone

John C. Maxwell

AAPG Bulletin

... under normal hydrostatic pressure is present the porosity may reach 30% (Maxwell, 1960, Fig. 4). Such experiments do not clarify the problem...

Mechanics of Hydraulic Fracturing

M. King Hubbert , David G. Willis

AAPG Special Volumes

... that the stress field is hydrostatic or nearly hydrostatic, the three principal stresses being approximately equal to one another and to the pressure...

CO2 injection simulation into the South Georgia Rift Basin for geologic storage: A preliminary assessment

Duke Brantley, John Shafer, and Venkat Lakshmi

Environmental Geosciences (DEG)

... the TOUGH2 code require a hydrostatic pressure gradient, which is not known in the SGR basin. For this reason, we used USGS’ SEAWAT to establish pressure...

The National Conference on Earth Science, Banff, November 5-9, 1984: "Geopressures and Hydrocarbon Occurrences": CONFERENCE REPORT

Peter Gretener

CSPG Bulletin

... to the pressure/depth ratio (most often, but erroneously, called the pressure gradient) in psi/ft. The reason for this coincidence is to be found in Dickinson's...

Extended Abstract: Exploring the Missing Blind Zone in the Gulf of Mexico Shelf

Selim Simon Shaker, Dave Reynolds, Walter W. Wornardt

GCAGS Transactions

... Vol. 65 (2015) Box. R., and E. Doss, 2008, Typical AVO response as a function of depth and fluid pressure gradient, Gulf of Mexico shelf: The Leading...

ABSTRACT: Timing of Deformation and Gas Generation and Migration in the Foothills Region of the Eastern Brooks Range Fold-Thrust Belt (Arctic National Wildlife Refuge, Alaska); #90011 (2002)

T. M. Parris, R. C. Burruss, P. B. O’Sullivan

Search and Discovery.com

... in northern Alaska. The analyses document the temperature, pressure, and fluid composition conditions under which fluid flow, including gas, occurred...

Importance of Hydrodynamic Factor in Formation of Lower Cretaceous Combination Traps, Big Muddy-South Glenrock Area, Wyoming: DISCUSSION

Kinji Magara

AAPG Bulletin

... (barrier) zone with the lowest displacement pressure will determine the maximum oil-trapping capacity of the barrier facies in a hydrostatic...

Water Production from Abnormally Pressured Gas Reservoirs in South Louisiana

W. E. Wallace

GCAGS Transactions

... under conditions of hydrostatic pressure. Failure to rise would indicate lack of an active water drive due to permeability barriers of some type...

Abstract: Hydraulic Pathways between and within the Scollard and Paskapoo Formations in Alberta: Implications for Pressure Distributions atop the Underpressured Envelope of Central Alberta and Resource Management; #90172 (2014)

Laurence D. Andriashek, Kevin Parks

Search and Discovery.com

... Recorder depth (m) 100 Potentially production influenced 400 Potentially influenced by nearby well 500 600 Nominal hydrostatic pressure...

ABSTRACT: Hydrodynamic Pressure Cell Systems in the Central Graben, North Sea, by David Darby, Stuart Haszeldine, Cambell Fleming, Gary Couples; #91020 (1995).

Search and Discovery.com

Development of a New Pressure Coring System for the Exploration of Unconventional Resources, Rothfuss, Martin; Anders, Erik, #90100 (2009)

Search and Discovery.com

Dirty vs. Clean Salt: Their Impact on the Subsalt Wilcox Deepwater Exploration Plays

Selim Shaker

GCAGS Transactions

... pressure envelopes and normal compaction trends takes place in the sediment surrounding the salt body. Lower pore pressure gradient has been observed below...

The Importance of Overburden and Pore Pressure on Horizontal Stress Magnitude Determination; an Example from the Delaware Basin

Kristen Kozlowski, Melia Da Silva, David Brown, Jack Taylor, Heather Willems, Tim Watson, Don Burch, Trevor Hutton, Chris Christensen, Mohan Manohar

Unconventional Resources Technology Conference (URTEC)

... models: gravity-based, wireline and ROP logderived, and a single-gradient. Comparison of these models and their effects on the estimated pore pressure...

Mechanics of Secondary Hydrocarbon Migration and Entrapment

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Mechanics of Secondary Hydrocarbon Migration and Entrapment

Tim T. Schowalter

AAPG Bulletin

..., the buoyant force of any hydrocarbon column will be different from that in the hydrostatic case. This effect can be quantified if the potentiome ric gradient...