Diagenetic Clay Mineral Composition as a Function of Pressure, Temperature, and Chemical Activity

B. Velde, E. Nicot

Journal of Sedimentary Research (SEPM)

... on clay-mineral solid-solution series such as the illite/smectite mixed-layer clay but also those of pressure (lithostatic versus hydrostatic) and aqueous...

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...

Chemical Kinetic Model of Hydrocarbon Generation, Expulsion, and Destruction Applied to the Maracaibo Basin, Venezuela

Jerry J. Sweeney , Robert L. Braun , Alan K. Burnham , Suhas Talukdar , Carlos Vallejos

AAPG Bulletin

... to fracture--the fracture limit, (5) the ratio of lithostatic pressure to hydrostatic pressure (dependent on rock density)--the lithostatic pressure gradient...

Shale Diagenesis

Eric Eslinger, David Pevear

Special Publications of SEPM

... normal conditions, in a pile of porous and permeable strata, the fluid pressure (hydrostatic) is less than the rock pressure (lithostatic...

Efficient interdisciplinary workflow for predrill seismic pore pressure prediction

Josue Fonseca, Anshuman Pradhan, Tapan Mukerji

International Meeting for Applied Geoscience and Energy (IMAGE)

... often have velocities lower than the ones with normal pressure at comparable depths (Mukerji et al., 2002; Dutta et al., 2021). Therefore, for a complete...

Application of Both Physics-Based and Data-Driven Techniques for Real-Time Screen-Out Prediction with High Frequency Data

Jianlei John Sun, Arvind Battula, Brandon Hruby, Paymon Hossaini

Unconventional Resources Technology Conference (URTEC)

... slope, and deviated surface pressure slope, respectively. From the perspective of physics, negative surface pressure slope occurs when hydrostatic...

Regional Pressure Patterns as Evidence for Fractured Reservoirs in the Bowdoin and Phillips Sandstones on Bowdoin Dome, Montana

George W. Shurr, Frederick D. Wosick, Dudley D. Rice

Montana Geological Society

... gradients are slightly less than a normal hydrostatic gradient of .43 psi/ft (9.7 kPa/m...

Geomechanics: Pressure, Stress Field, and Hydraulic Fractures

Raúl A. Varela, Denis Marchal, Sergio Cuervo, Ezequiel F. Lombardo, Yonatan S. Perl, Damián E. Hryb, Osvaldo Nielsen, Pablo Pateti

AAPG Special Volumes

...), and formation shearing (during hydraulic fracture operation). Overpressure Evidences, Compartmentalization, and Detection Hydrostatic pore pressure is generated...

A dynamic model for the Permian Panhandle and Hugoton fields, western Anadarko basin

Raymond P. Sorenson

AAPG Bulletin

... cross section BB. Pressure-depth diagrams show the calculated hydrostatic pressure at sea level +100 ft (+30 m) for the Hugoton field...

Diagenetic Pathways in Sedimentary Basins: Chapter 6: DIAGENESIS AND BASIN HYDRODYNAMICS

Wendy J. Harrison, Regina N. Tempel

AAPG Special Volumes

... between abnormal and near-normal pressure in the offshore Frio shales. GEOLOGY OF THE GULF OF MEXICO BASIN The Gulf of Mexico basin has been...

Prediction of multiple origin overpressure in deep fold-thrust belt: A case study of Kuqa subbasin, Tarim Basin, northwestern China

Changyu Fan, Gang Wang, Zhenliang Wang, Xiaojie Han, Jie Chen, Kuaile Zhang, and Baoshou Zhang

AAPG Bulletin

... at the normal compaction trend (NCT) was also proposed to predict pore pressure (Zhang, 2011), in which both the effects of the matrix and the mudline...

Interstitial Water Composition and Geochemistry of Deep Gulf Coast Shales and Sandstones

Gene W. Schmidt

AAPG Bulletin

... is free to move out of the shale and is in communication with the surface, the pressure of the water in the pores is hydrostatic (normal). If the water...

Abstract of 2006 AAPG/GSTT Hedberg Conference

Search and Discovery.com

Basic Disposal-Well Design

A. C. Barlow

AAPG Special Volumes

... the annulus. This type of seal can be used only where the hydrostatic pressure of the formation is sufficient to raise the formation water to near ground...

Relation of Methane Generation to Undercompacted Shales, Shale Diapirs, and Mud Volcanoes

Hollis D. Hedberg

AAPG Bulletin

... of the sedimentary column. It remains less than normally compacted and its fluid content carries not only the normal hydrostatic pressure proper to its position...

Gas-Charging of Late Pleistocene Shelf-Edge Delta Reservoirs and Dissociation of Gas Hydrate, Northeastern Gulf of Mexico

Harry H. Roberts, Richard H. Fillon, Larry Cathles III

GCAGS Transactions

..., reduction in hydrostatic pressure and warmer water periodically impact the top of the gas hydrate stability zone, triggering hydrate instability. Rapid...

Permeability Controls on Aquathermal Pressuring

John M. Sharp, Jr.

AAPG Bulletin

... ^agrr is the compressibility of the mineral grains. The fluid pressure (p) is the sum of the hydrostatic (ps) and excess (u) pore-fluid pressures...

Exploring Basin-Scale Relations and Unsupervised Classification to Quantify and Automate the Definition of Assessment Units in USGS Continuous Oil and Gas Resource Assessments

Chilisa M. Shorten, Scott A. Kinney, Katherine J. Whidden

International Meeting for Applied Geoscience and Energy (IMAGE)

... × well depth [ft]) and the expected pressure estimate (0.465 psi/ft × well depth [ft]) under normal hydrostatic conditions. One challenge during data...

Pore Pressure Prediction in Organic Shales of the Permian Basin: Rock Physics Basis

Prajnajyoti Mazumdar, Lev Vernik, Alex Dale

Unconventional Resources Technology Conference (URTEC)

... well. The 5th track shows the recorded sonic in black and filtered sonic (in red) used in PPP. Hydrostatic pressure is shown in blue, overburden...

4.0 Structural Implications of Pore Pressure

P. E. Gretener

AAPG Special Volumes

... at shallow depth. Due to their deep origin many diapirs acquire sufficient hydrostatic excess pressure to actually penetrate into the shallow section where...

Hydraulic, water quality, and isotopic characterization of Late Cretaceous–Tertiary Ardley coal waters in a key test-well, Pembina–Warburg exploration area, Alberta, Canada

S.M. Harrison, T. Gentzis, M. Payne

CSPG Bulletin

.... The following general steps were used: Figure 5a. Drilling and completion. Upper Ardley Coal Zone (9 m-thick) cased-off and isolated in well. Hydrostatic pressure...

Outcrop Control of Basin-Scale Underpressure in the Raton Basin, Colorado and New Mexico

Philip H. Nelson, Nicholas J. Gianoutsos, Lawrence O. Anna

Rocky Mountain Association of Geologists

... strata in the Raton Basin are underpressured. Pressure-depth ratios are less than hydrostatic and corresponding head values are well below surface...

Diffusion of Methane and Ethane Through the Reservoir Cap Rock: Implications For the Timing and Duration of Catagenesis

Jon S. Nelson , E. C. Simmons

AAPG Bulletin

... and hydrostatic pressure gradients. The change can be estimated using the Stokes-Einstein relation (Einstein, 1905): [Equation] Table 1. Values...

The Advantages of Casing Drilling for Top Hole Section in Managing Shallow Gas Risk

Deni Setiawan, Arnold Rico Novrianto, Muhammad Syarif Ali Akbarsyah

Indonesian Petroleum Association

... condition is calculated by adding the APL to the hydrostatic pressure of the mud. The actual bottom hole pressure can be expressed in terms of mud weight...

Influence of Natural Fractures on Hydraulic Stimulation in Geothermal Reservoirs: Insights from Utah FORGE Coupled Hydro-Mechanical Modeling

Hafssa Tounsi, Branko Damjanac, Zorica Radakovic-Guzina, Wei Fu, Aleta Finnila, Pengju Xing, Robert Podgorney, John McLennan

Unconventional Resources Technology Conference (URTEC)

... losses within the wellbore. Hydrostatic pressure was calculated based on fluid density and injection depth, while frictional losses were estimated...