The Influence of Fault Permeability on Single-Phase Fluid Flow Near Fault-Sand Intersections: Results from Steady-State High-Resolution Models of Pressure-Driven Fluid Flow

Stephan K. Matthai , Stephen G. Roberts

AAPG Bulletin

... the upper to the lower model boundary. This increase is composed of steep pressure gradients in the shale and hydrostatic gradients in the sand...

In-situ stress and coal bed methane potential in Western Canada

J.S. Bell

CSPG Bulletin

... pressures, post-fracture ISIPs as well as fracture gradients are often reported, or they can be determined from the pressure/time records. Leak-off...

Methods for Reconstructing Subsurface Pressure Regimes in an Unconventional Play as an Indicator of Well Performance in the Delaware Basin

Evan Kelly, Matt Laughland, Mriganko Sarkar, Donny Loughry

Unconventional Resources Technology Conference (URTEC)

... production. In contrast, normal pressure gradients surround the basin margins where production rates are reduced. Introduction Pore pressure is a key driver...

Abstract: Pressure Trends in Lower Viosca Knoll and Mississippi Canyon, Gulf of Mexico Deep Water: Implications for Seals, Column Heights and Hydrocarbon Migration, by B. E. Wagner; #90937 (1998).

Search and Discovery.com

Abnormal-Subnormal Pressure Relationships in the Morrow Sands of Northwestern Oklahoma

Arthur F. Breeze

Oklahoma City Geological Society

.... Recent studies of abnormal pressure on the Gulf Coast have reported pressures as high as 1.87 normal hydrostatic pressure, equivalent to 0.87 pounds per...

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

Donald S. Stone , Roger L. Hoeger

AAPG Bulletin

...--sieves or seals?: Research Rept. A-5, 58 p. (unpub.). Petroleum Research Corp., 1960, Geologic significance of pressure gradients, capillarity...

Observations and Inferences for Overpressure Development under Salt Sheets in the Gulf of Mexico

J. J. O'Brien , I. Lerche , Z. Yu

GCAGS Transactions

... pressure regimes: 'normal pressure' where the pressure gradient lies in the range .465-.65 psi/ft.; 'moderate overpressure' with pressure gradients of .65...

ABSTRACT: Relative Permeability Damage in Undersaturated Reservoirs

Monty E. Hoffman

Rocky Mountain Association of Geologists

...-Continent and Rocky Mountain regions are not in pressure equilibrium. They are hydrodynamic and underpressured, not hydrostatic and normal pressured. Recent...

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)

... the pore pressure and hence reduce the effective normal stress, which can induce fault slip and potentially lead to induced or triggered seismicity...

2D Seismic and Well Log Data Integration to Predict Pore Pressure Distribution in Brilian Field, Bintuni Basin

Refsi Dian Paparezzi, Warto Utomo, Muhammad Thariq Almuqtadir

Indonesian Petroleum Association

... Hydrostatic pressure is the pressure caused by the thickness of the water column in a static state. In subsurface pressure, normal pressure...

High Fluid Pressures and High Fluid Flow Rates From a Zone of Natural Hydrofractures Associated with a Major Out-of-Sequence Thrust Zone, Convergent Margin, Southwest Japan; #41202 (2013)

J. Casey Moore, Myles Barrett, and Moe Kyaw Thu

Search and Discovery.com

...’s notes: Reverting to similar gradients at depth and fidelity of time data over this and higher intervals strongly suggests that pressure signal...

Pressures in the Los Monos-Huamampampa System and Their Control in Hydrocarbon Fields Occurrence and Size; #11118 (2018)

Daniel Starck

Search and Discovery.com

... water has a “regional” salinity of about 30 g/l, which implies a specific weight (“density”) of about 1.03 g/cm3 Normal pressure Hydrostatic...

AAPG/Datapages Discovery Series No. 7, Multidimensional Basin Modeling, Chapter 7: Pore-Pressure-Dependent Fracture Permeability in Fault Zones: Implications for Cross-Formational Fluid Flow

Nunn, J. A.

AAPG Special Volumes

... and pressure gradients normal to the surface are maintained along the sides (i.e., no heat flow or fluid flow across the side boundaries). Following...

Comparing Overpressure in the West and East Natuna Basins

Julianta Parlindungan Panjaitan, Bobby Siswanto, Rizki Perdana Putra, Heru Putranto, Rita Achdiat

Indonesian Petroleum Association

... to the normal hydrostatic pressure gradient. Abnormal pore pressure generally refers to overpressure where the pore pressure is greater than the normal...

Movements of Ground Water

O. E. Meinzer

AAPG Bulletin

... essentially of a glass U-tube with provision to prevent evaporation without interfering with the normal atmospheric pressure, but for most samples somewhat...

Abstract: Compaction and Overpressure in Shales: Practice and Theory

Phil Heppard and Dan Ebrom

Houston Geological Society Bulletin

... velocities to pressures requires an understanding of the normal (hydrostatic) compaction curve for shales in a given region. Absent a normal compaction...

Origin of Overpressure and Pore Pressure Prediction in the Baram Delta Province, Brunei; #40709 (2011)

Mark Tingay, Richard Hillis, Richard Swarbrick, Chris Morley, and Razak Damit

Search and Discovery.com

...Origin of Overpressure and Pore Pressure Prediction in the Baram Delta Province, Brunei; #40709 (2011) Mark Tingay, Richard Hillis, Richard Swarbrick...

Workflow for Pore Pressure and Horizontal Stress Field Estimation in Vertical Wells Using Well Data in the XŽ Field in South Sumatra

Mohammad Zulfikar Simatupang, Bonar Tua Halomoan Marbun, Ramadhana Aristya, Niko Pratama Purba

Indonesian Petroleum Association

... of the pore pressure and fracture gradients. The purpose of this study is to develop a pore pressure estimation strategy and workflow for a particular...

Gas saturation and CO2 enhancement potential of coalbed methane reservoirs as a function of depth

Yves Gensterblum, Alexej Merkel, Andreas Busch, Bernhard M. Krooss, Ralf Littke

AAPG Bulletin

... the corresponding Langmuir parameters in combination with a geothermal gradient of 0.03 K/m and a normal hydrostatic pressure gradient. Taking the gas...

Increasing Occurrence of Abnormally High Reservoir Pressures in Boreholes, and Drilling Problems Resulting Therefrom

J. H. M. A. Thomeer , J. A. Bottema

AAPG Bulletin

... at normal hydrostatic pressure in spite of petrostatic pressures passed higher in the hole. This is a very remarkable fact, the cause of which would...

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

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

AAPG Bulletin

... appropriate at depths to 9 km. (30,000 ft.). 3. Whenever the formation pressure is "normal" (equivalent to the hydrostatic head of a column of water...

Dehydration Reactions

W. S. Fyfe

AAPG Bulletin

... sediments and metasediments will fall within the region of the zeolite facies, and this is no small region if thermal gradients are normal or undisturbed...

Prediction of Porosity in Compacted Sands

Jon Gluyas,, Christopher A. Cade

AAPG Special Volumes

... pressure must be closely controlled to reflect hydrostatic fluid pressure increase during burial. A triaxial test apparatus was used for the laboratory...

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...

Formation Pressures in the Sections of the Lugi-1 and Shevchenkovo-1 Super-Deep Wells

A. A. Orlov, M. I. Chornyy, V. P. Vasilechko

Petroleum Geology: A Digest of Russian Literature

...; 2-actual compaction; 3-normal hydrostatic pressure in sediments; 4-anomalous pressure in sediments determined from density of drilling mud; 5-anomaly...