Variations in Gulf Coast Heat Flow Created by Groundwater Flow

Daniel P. Bodner , Paul E. Blanchard , John M. Sharp, Jr.

GCAGS Transactions

.... Here groundwater movement is not significantly influenced by surficial conditions, but rather is controlled by excess pore-fluid pressure gradients...

Kristin „ A Tough Lady

Halfdan Carstens

GEO ExPro Magazine

... with an abnormally pressured reservoir, which means that the pore pressures in the formation fluids are higher than the hydrostatic pressure and lower than...

Geomechanical Wellbore Imaging: Key to Managing the Asset Life Cycle

Colleen Barton, Daniel Moos

AAPG Special Volumes

... is reached.The maximum hydrocarbon column height is computed from the critical pressure using the difference between the hydrostatic gradient of water...

Designing A Real-Time Geomechanics Program For A 7Km Borehole To Intersect The Nankai Subduction Zone In Japan

Search and Discovery.com

Abnormal pressures and the occurrence of hydrocarbons off the east coast of Trinidad, West Indies

Heppard, P.O., Cander, H.S., and Eggerlson, E.B.

Geological Society of Trinidad & Tobago

... 77253-3092, USA ABSTRACT While the majority of the oil and gas accumulations off the eastern coast of Trinidad are in a normal pressure environment...

Integrated charge and seal assessment in the Monagas fold and thrust belt of Venezuela

Martin Neumaier, Ralf Littke, Thomas Hantschel, Laurent Maerten, Jean-Pierre Joonnekindt, and Peter Kukla

AAPG Bulletin

... of abnormal pressure (overpressure), hydrostatic decompaction overestimates the effective stress, or underestimates porosity, and might fail to the same...

Regional-Scale Flow of Formation Waters in the Williston Basin

Stefan Bachu , Brian Hitchon

AAPG Bulletin

..., the pressure in the Mississippian to Mannville aquifers is above hydrostatic (hydraulic heads higher than local topography), but not higher than...

Geological engineering criteria for deep solids injection

Muhammad Nadeem, Maurice B. Dusseault

Environmental Geosciences (DEG)

... away from the fracture. In the hydrostatic pressure case, po = w z; therefore,Typical values for a depth of 500 m (1640 ft) are v = 12 MPa (1740 psi...

Geothermal Variations in Oil Fields of Los Angeles Basin, California

Anders J. Carlson

AAPG Bulletin

... the interpretation of geothermal data are noted. The relations of geothermal gradients and isothermal depths to structure are discussed for the Santa Fe Springs...

Late Wisconsinan Proglacial Sedimentation Along the West Chicago Moraine in Northeastern Illinois

Gordon S. Fraser, James C. Cobb

Journal of Sedimentary Research (SEPM)

... pressure in excess of hydrostatic pressure. Such a mechanism could operate where stream levels periodically dropped faster than pore water could...

Cavitation Noise Interference in Acoustic Sand Detection System

Atria Jarot Herwibowo, Nurul Afia, Dadik Hendra Kusuma

Indonesian Petroleum Association

... by dynamic process of the flow formation and implosion of cavities in fluids. High flow velocities cause the local hydrostatic pressure to drop...

Quasi-Static Fracture Height Growth in Laminated Reservoirs: Impacts of Stress and Toughness Barriers, Horizontal Well Landing Depth, and Fracturing Fluid Density

Mehran Mehrabi, Yanli Pei, Mahdi Haddad, Farzam Javadpour, Kamy Sepehrnoori

Unconventional Resources Technology Conference (URTEC)

.... The fracture walls are generally under a hydrostatic pressure profile. There are two groups of fracture growth criteria: 1.) toughness-based criteria; and 2...

Occurrence and Detection of Abnormal Pressures from Geological and Drilling Data, North Sumatra Basin

A. Aziz, L. H. Bolt

Indonesian Petroleum Association

... place in a normal manner. Figure 5. Isopach Map Between 215°F Isotherm and 290°F Isotherm Occurrence of Abnormal Pressure Zone Lateral and Vertical...

A Model for the Evolution of Hot (>200°C) Overpressured Brines Under an Evaporite Seal: The Fundy/Magdalen Carboniferous Basin of Atlantic Canada and Its Associated Pb-Zn-Ba Deposits

Casey Ravenhurst, Marcos Zentilli

CSPG Special Publications

... pressures. The λ parameter, which is the ratio of fluid pressure to overburden pressure, is about 0.45 in a normal (hydrostatic) pressured basin. In nature...

Vaporchoc: Utilization of Steam as a New Seismic Source

P. Staron

Pacific Section of AAPG

... that the bubble energy, equivalent to the product of the hydrostatic pressure and the imploding volume, is quite independent of the depth of the source...

Origin of overpressure and pore-pressure prediction in the Baram province, Brunei

Mark R. P. Tingay, Richard R. Hillis, Richard E. Swarbrick, Chris K. Morley, Abdul Razak Damit

AAPG Bulletin

...; that is, a balance between the increased compressive stress and the expulsion of pore fluid exists, thus pore pressure remains hydrostatic. However...

Continental-shelf freshwater water resources and improved oil recovery by low-salinity waterflooding

Mark Person, John L. Wilson, Norman Morrow, and Vincent E. A. Post

AAPG Bulletin

... (and hence hydrostatic pressure) increase associated with the vertical salinity gradient within the upper confining layer. This scenario is representative...

Natural fractures in a United Kingdom shale reservoir analog, Cleveland Basin, northeast England

Jonathan Imber, Howard Armstrong, Sarah Clancy, Susan Daniels, Liam Herringshaw, Ken McCaffrey, Joel Rodrigues, João Trabucho-Alexandre, and Cassandra Warren

AAPG Bulletin

... and coupling between pore pressure and minimum horizontal stress driven by poroelastic deformation or incipient slip along critically stressed normal...

Compaction of Sand and Clay - Constraints from Experimental Compaction, Chemical Reactions and Fluid Flow During Burial - an Overview; #51449 (2017)

Knut Bjørlykke, Line Hedvig Line, Jens Jahren, Nazmul Haque Mondol, Per Aagaard, Helge Hellevang

Search and Discovery.com

... basin both lithostatic pressure (PL) and hydrostatic pressure (PH) increase as a function of depth. In the chemical compaction domain (CCD...

Brittleness modeling selects optimum stimulation zone in shaly source rocks in the Whangai Formation, New Zealand

Claudio Rabe, Raul Correa Rechden Filho, Jesus Pastor Salazar, Fernando Della Pasqua, Giovanni Chaves Stael, and Luiz Antonio Pierantoni Gamboa

AAPG Bulletin

... transit time, and ΔTlog is normal transit time. The Pp shows reversal back to hydrostatic pressure below the Whangai Formation, at the top...

Quantitative analysis of slip-induced dilation with application to fault seal

Scott J. Wilkins, Stephen J. Naruk

AAPG Bulletin

... and the hydrostatic-lithostatic fluid pressure interface: Earth Science Reviews, v. 32, p. 141144.Slemmons, D. B., and C. M. Depolo, 1986, Evaluation of active...

Geology and Diagenetic History of Overpressured Sandstone Reservoirs, Venture Gas Field, Offshore Nova Scotia, Canada (1)

LUBOMIR F. JANSA and VICTOR HUGO NOGUERA URREA

AAPG Bulletin

... gradient is 0.89 X the average geostatic gradient and 1.9 X the normal hydrostatic gradient. Detailed plotting of pressure vs. depth shows...

Entrapment of Petroleum in Isolated Porous Bodies

Caswell Silver

AAPG Bulletin

... compaction, we are not dealing solely with normal reservoir pressure in a porous medium. By normal pressure, I mean pressure equal to the head reaching...

Mud Displacement During the Cementing Operation – "A State of the Art"

Carl W. Sauer, Mike V. Till

Indonesian Petroleum Association

... for the casing. Comparing the resultant differential pressure surge to the encountered formation fracture gradients and keeping below those should provide...

Normal Fault Structures and Others

Bailey Willis

AAPG Bulletin

... replaced by subsidence, resulting in the occurrence of normal faults in a basin area. Since the lifting pressure of magma is an essential postulate...