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...

Regional Variations in Formation Water Chemistry, Frio Formation (Oligocene), Texas Gulf Coast

Robert A. Morton , Lynton S. Land

AAPG Bulletin

... in a zone of higher thermal gradient, intermediate sand percent, and pressure gradients ranging from 10.5 to 17.0 kPa/m (0.46 to 0.75 psi/ft). Based...

Analysis of Sonic Well Logs Applied to Erosion Estimates in the Bighorn Basin, Wyoming

Henry P. Heasler , Natalya A. Kharitonova

AAPG Bulletin

... curves: AAPG Bulletin, v. 69, p. 622-626. Barker, C., 1972, Aquathermal pressuring: the role of temperature in the development of abnormal-pressure...

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...

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...

Wave Processes and Geologic Responses on the Floor of the Yellow Sea

James S. Booth, William J. Winters

Special Publications of SEPM

... seafloor gradients also typify the subaque as 1989 e 350 for the drained case determined from triaxial tests on the of normal consolidation assumed...

Migration of Fluids in Sedimentary Basins

S. Neglia

AAPG Bulletin

... surface and favors entrapment under suitable conditions. End_Page 588------------------------------ fact that the reservoir pressure is hydrostatic...

Diagenetic Mineralogy and Controls on Albitization and Laumontite Formation in Paleogene Arkoses, Santa Ynez Mountains, California: Part 2. Aspects of Porosity Modification

Kenneth P. Helmold, Peter C. van de Kamp

AAPG Special Volumes

... these more porous and permeable sandstones, they were free to migrate updip and along strike and, consequently, remained under hydrostatic pressure (Fig...

New Progress and Technological Challenges in the Integral Development of the Faja Petrolifera del Orinoco, Venezuela

Teofilo Villarroel, Adriana Zambrano, Rolando Garcia

AAPG Special Volumes

... properties vary with depth and the thermal gradient, which differs by area. Pressures are normal, following hydrostatic gradients ranging between 5616...

Displacement Geometry in the Volume Containing a Single Normal Fault

Jim A. M. Barnett , John Mortimer , John H. Rippon , John J. Walsh , Juan Watterson

AAPG Bulletin

... plot of displacement (D) against width (W) is presented (Figure 5) for a variety of normal faults and thrusts. Because mean displacement gradients...

A Summary of Current Direct Location Technology

Reed Tompkins

Houston Geological Society Bulletin

... hydrostatic pressure forces the saturation of overlying sealing agents (shales and/or limestone) with hydrocarbons from the reservoir (Fig. 1). No known...

Jolliet Field Thrust Fault Structure and Stratigraphy Green Canyon Block 184, Offshore Louisiana

Douglas Cook , Peter D'Onfro

GCAGS Transactions

... section in Figure 15. The total overburden pressure gradient for each layer was calculated from the unit weight. The total overburden pressure gradients...

Evolution and origin of deep reservoir water at the Activo Luna oil field, Gulf of Mexico, Mexico

P. Birkle, J. J. Rosillo Aragon, E. Portugal, J. L. Fong Aguilar

AAPG Bulletin

... natural pressure gradients probably are insufficient to accomplish filtration (Manheim and Horn, 1968). Using the Rb-Li-Ca-Na elemental distribution...

Effects of Overburden Anisotropy and Vertically Aligned Fractures on P-Wave Azimuthal AVO Responses

Fatkhan, Yudi Yanto, Nofri Faruza Said

Indonesian Petroleum Association

...) and (f) class 3, normal and along fractures. 658 Figure 3 - Polar plots of azimuthal AVO gradients VTI overlying HTI medium for dry inclusions...

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...

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...

Well Temperatures in the Abilene Area

Arthur L. Jenke

Abilene Geological Society

... a normal gradient. Chemical reactions taking place during the formation of petroleum have been suggested as a possible cause of high geothermal gradients...

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...

Chapter 10: Petrophysical and Mechanical Properties of Organic-rich Shales and Their Influences on Fluid Flow

Fred P. Wang, Ursula Hammes, Robert Reed, Tongwei Zhang, Xiaohu Tang, Qinghui Li

AAPG Special Volumes

... hydrostatic pressure and fully saturated with water at shallow depths. Connate-water saturation (Swc) was higher than irreducible water saturation (Swirr...

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...

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...

Hydrocarbon Generation and Migration from Jurassic Source Rocks in the East Shetland Basin and Viking Graben of the Northern North Sea

J. C. Goff

AAPG Special Volumes

... pressure gradients, from overpressured source rocks in half grabens to Jurassic reservoirs in tilted fault blocks. In the Viking Graben the Kimmeridge Clay...

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...