Evaporite-Solution Brecciation and Devonian Carbonate Reservoir Porosity in Western Canada

F. W. Beales , A. E. Oldershaw

AAPG Bulletin

... for the precipitation of gypsum or anhydrite. The breccia molds generally range in size from a few millimeters to a few centimeters, consonant with derivation from...

Nomenclature for Sedimentary Rocks

Russell B. Travis

AAPG Bulletin

... referred to as "clastic." "Clastic," as formally defined, however, involves derivation from preexisting rocks and carries a strong connotation...

Palynology and Age of Beaverhead Formation and Their Paleotectonic Implications in Lima Region, Montana-Idaho

Robert T. Ryder , H. Tate Ames

AAPG Bulletin

... Cretaceous to early Paleocene age of the sample dates the final phases of material derivation from the Blacktail-Snowcrest arch. Afterward, quartzite...

Upper Devonian Sandstone in Arrow Canyon Quadrangle, Clark County, Nevada

John F. Ryan , Ralph L. Langenheim, Jr.

AAPG Bulletin

... of the grains. Derivation of the quartz grains from preexisting sediments and the effects of more than one cycle of erosion and deposition are suggested...

Forties Field, North Sea

A. N. Thomas , P. J. Walmsley , D. A. L. Jenkins

AAPG Bulletin

..., sillimanite, hornblende, and pyroxene. These appear to indicate derivation from rocks akin to the Moinian and Lewisian of Scotland. Unit III...

Transformation of Resistivity to Pseudovelocity Logs

Albert J. Rudman , Joseph F. Whaley , Robert F. Blakely , Maurice E. Biggs

AAPG Bulletin

... of the rock and mud filtrate) and is called the apparent resistivity Ra. Derivation of true resistivity from apparent resistivity is not a simple task...

Studies of Ventura Field, California, II: Lithology, Compaction, and Permeability of Sands

Kenneth J. Hsu

AAPG Bulletin

...). The data permitted the derivation of an empirical relation relating permeability to lithology and compaction: [EQUATION] where k is permeability...

Neogene Turbidite Sedimentation in Komandorskiy Basin, Western Bering Sea

Richard J. Stewart

AAPG Bulletin

..., the southward regional slope of the basin floor does not sugg st derivation from the south, at least in the uppermost part of the core. If sand compositions...

Analysis of Gravity Anomaly Over Coral-Reef Oil Field: Wilfred Pool, Sullivan County, Indiana

Stephen W. Dana

AAPG Bulletin

... is probably due to the difference in the derivation, since the circle method for obtaining residuals would be more influenced by local irregularities...

Determination of Organic-Matter Content of Appalachian Devonian Shales from Gamma-Ray Logs

James W. Schmoker

AAPG Bulletin

... (Fig. 3). Derivation of Basic Equation The slope of the crossplot of gamma-ray intensity and formation density is assumed constant at a given...

Relationships Between East Texas Field Region and Sabine Uplift in Texas

Michel T. Halbouty , James J. Halbouty

AAPG Bulletin

... removed practically all of the Washita beds. The Austin Chalk occurs unconformably over the entire area. Woodbine Formation Concerning derivation...

Pristane, Phytane, and Lower Molecular Weight Isoprenoid Distributions in Oils

Harold A. Illich

AAPG Bulletin

... in comparison with isoprenoid data obtained by whole-oil gas-liquid chromatography. The significance of the excess pristane, and its possible derivation...

Chronostratigraphic and Geochronometric Scales in COSUNA Stratigraphic Correlation Charts of the United States

Amos Salvador

AAPG Bulletin

...") can be replaced by more appropriate terms of geographic derivation. The lack of significant differences in the terminology used...

Daqing Oil Field, People's Republic of China: A Giant Field with Oil of Nonmarine Origin

Yang Wanli

AAPG Bulletin

... to hydrocarbon accumulation area decreases, the distance of secondary migration becomes comparatively shorter. This is due to the derivation from freshwater...

The Effects of Oil Emplacement on Diagenetic Processes: Examples from the Fulmar Reservoir Sandstones, Central North Sea: Geologic Note (1)

GIRISH C. SAIGAL , KNUT BJORLYKKE , and STEVE LARTER

AAPG Bulletin

... of Fulmar composition (Table 1) is consistent with derivation from a source rock buried at 3.6 degrees C/m.y., which currently is at a depth of around 3800 m...

Source Rock Quality Determination from Oil Biomarkers II--A Case Study Using Tertiary-Reservoired Beaufort Sea Oils

Mark A. McCaffrey , Jeremy E. Dahl , Padmanabhan Sundararaman , J. Michael Moldowan , Martin Schoell

AAPG Bulletin

... concentrations (Table 3) in this oil are consistent with derivation from a source deposited in a paralic marine environment. Biodegradation About...

Detection of Zones of Abnormal Strains in Structures Using Gaussian Curvature Analysis

Richard J. Lisle

AAPG Bulletin

... for estimating strain magnitudes must await the derivation of a general relationship between the two-dimensional strains and curvatures of a surface...

Permian "Wolfcamp" Limestone Reservoirs: Powell Ranch Field, Eastern Midland Basin

Scott L. Montgomery

AAPG Bulletin

... indicate derivation from a diversity of shelf environments (Figure 8) and thus suggest mixing of debris by storm-generated cu rents or other high-energy...

Modifications of the petroleum system concept: Origins of alkanes and isoprenoids in crude oils: Reply

James Collister, Robert Ehrlich, Frank Mango, Glenn Johnson

AAPG Bulletin

... origin (i.e., the strong even-carbon preference in the midchain alkanes), and we agree that this suggests derivation of fatty acids from lipid membranes...

Petroleum reservoir porosity versus depth: Influence of geological age

S. N. Ehrenberg P. H. Nadeau O. Steen

AAPG Bulletin

... is unknown, but derivation from a combination of core-plug data and log interpretation seems likely. The datum for the top reservoir depth is the land...

Identification and distribution of hydraulic flow units of heterogeneous reservoir in Obaiyed gas field, Western Desert, Egypt: A case study

Mohamed A. Kassab, Ahmed Elgibaly, Ali Abbas, and Ibrahim Mabrouk

AAPG Bulletin

..., and optimal derivation of petrophysical parameters such as hydraulic units. Information from well logs (in this case the PCs) is used as the model...

Abstract: Automatic High-Density Constrained Velocity Picking; #90211 (2015)

Emil Blias

Search and Discovery.com

... derivation and applications of velocity functions: Geophysics, v. 34, p. 859-881. Toldi, J.L., 1989, Velocity analysis without picking: Geophysics, v. 54...

Petroleum System in the Shushan Basin: A Mature Basin Leading to Future Exploration in the Western Desert of Egypt, by M.A. Younes, #10107 (2006).

Search and Discovery.com

Discrete Fracture Network Simulation: Application of Tectonic Simulation and Conditional Global Optimization Technique, #40861 (2012)

Nima Gholizadeh Doonechaly, Sheik Rahman

Search and Discovery.com

... for the complete derivation): 3 (22) Where, I1 and I2 are the first and second stress invariants, γf is the surface tension energy and K0 is the material...

Implications for Tectonic Control on Paleogeography and Sediment Dispersal Pathway: Integrated U-Pb Detrital Zircon Age-Analysis of the Paleogene Missouri River Headwater System, SW Montana; #50863 (2013)

Douglas E. Barber, Robert K. Schwartz, Amy L. Weislogel, Lauren Schricker, and Robert C. Thomas

Search and Discovery.com

... Biotite-muscovite granitic sandstone in the paleoGrasshopper basin (ML-12-03) suggests derivation from the Chief Joesph Pluton in the Anaconda Range...