Drill Bit Walk and Near-Wellbore Heterogeneity Illuminated by Azimuthal Gamma Ray while Drilling into Hard and Interbedded Formations along Unconventional Horizontal Wells

Haijing Wang, Kelli Randall, Kevin Sutherland, Mason Edwards, Yegor Se, Ed Stockhausen, Pete Clark

Unconventional Resources Technology Conference (URTEC)

... is a special form of directional drilling that places long lateral wells within a target formation at a near-horizontal inclination. The lateral wells...

The Control of Mud Crack Patterns by Small Gastropod Trails

Christopher T. Baldwin

Journal of Sedimentary Research (SEPM)

... of pre-existing gastropod trails (Fig. 1a). The earliest stages of this desiccation cracking resulted in zones of en-echlon hair cracks (approx 1.5 mm...

Marine Acquisition and Processing Using Dual Sensor Towed Streamer (Geophysics Paper 1)

Walter Söllner, Svein Vaage, David Carlson, Martin Widmaier, Anthony Day, Stephen Pharez, Maz Farouki

Geological Society of Malaysia (GSM)

..., reducing temporal resolution. In contrast, velocity sensors are directional, so the down-going velocity wavefield is measured as having equal polarity...

Dispersion of Cross-Stratification as a Potential Tool in the Interpretation of Proterozoic Arenites

Darrel G. F. Long, Grant M. Young

Journal of Sedimentary Research (SEPM)

..., Canada, 291 p. MIALL, A. D., 1974, Paleocurrent analysis of alluvial sediments: a discussion of directional variance and vector magnitude: Jour. Sed...

Method and Inexpensive Device for Direct Field Re-orientation of Originally Horizontal Linear Structures: METHOD PAPER

Richard J. Diecchio

Journal of Sedimentary Research (SEPM)

... method for rotation of structurally tilted sedimentary directional features: Geol. Soc. America Bull., v. 81, p. 537-540. RAMSAY, J. G., 1961...

Formation Evaluation of Naturally Fractured Reservoirs: Part 4. Wireline Methods

Roberto Aguilera

AAPG Special Volumes

... by a conductive fluid. A two-directional caliper run with the dipmeter can sometimes show an elliptical hole in front of the fractured interval. (For more...

Geological Heterogeneities: Part 6. Geological Methods

Roger M. Slatt , William E. Galloway

AAPG Special Volumes

... scales of heterogeneity (Figure 1). Heterogeneities at the wellbore scale affect matrix permeability, distribution of residual oil, directional flow...

Evaluating Stratigraphically Complex Fields: Part 6. Geological Methods

Diana Morton-Thompson , W. E. Galloway

AAPG Special Volumes

...) -- Anomalous fluid relationships (such as a gas zone underlying an oil zone or an oil zone downdip of water) -- Irregular and/or highly directional...

Uniformitarianism and Sedimentology: EDITORIAL

James H. Shea

Journal of Sedimentary Research (SEPM)

... this erroneous, confining, and impossible dogma. Conditions on Earth have evolved and directional change rather than mere random variation seems...

Session 4. Linear (Barrier) Shorelines Facies

Richard C. Selley

AAPG Special Volumes

...------------------------- Directional features:- a) low angle seaward dips. b) high angle dips of varied, but predominantly onshore dips. Biota: comminuted marine...

Formation of Scalloped Cross-Bedding Without Unsteady Flows

David M. Rubin

Journal of Sedimentary Research (SEPM)

... bedforms, but, as illustrated in three-dimensional computer plots, the two kinds of structures commonly can be distinguished by directional properties...

An Improved Method for Calculating the Standard Deviation and Variance of Paleocurrent Data: RESEARCH METHOD PAPER

Robert G. F. Krause , Theresa A. M. Geijer

Journal of Sedimentary Research (SEPM)

... corresponds to the directional nature of paleocurrent data. Standard deviation and variance for linear frequency distributions are expressed...

Sand Trends and Paleoslope in Illinois Basin and Mississippi Embayment

Wayne Arthur Pryor

AAPG Special Volumes

... southwesterly trends that parallel the respective paleoslopes and basin axes, and that are normal to depositional strikes. Studies of directional properties...

2. Channel Morphology

Andrew D. Miall

AAPG Special Volumes

.... The small square in each diagram represents the area enlarged in the diagram for the next rank. Rose diagrams indicate the directional variability...

Paleocurrents and Paleogeography

F. J. Pettijohn

AAPG Bulletin

.... 551). Arbogast, J. L., Fay, C. H., and Kaufman, S., 1960, Method and apparatus for determining directional dielectric anisotropy in solids: U...

Comparison of Boudins with Some Similar Tectonic Inclusions: GEOLOGICAL NOTES

W. M. Schwerdtner , P. N. Byers

AAPG Bulletin

... deposited as gypsum, and only some may have been formed as fine-grained anhydrite. The directional agreement of the large anhydrite grains with the cross...

Late Cretaceous Paleogeography Near Wheeler Gorge, Ventura County, California

B. R. Rust

AAPG Bulletin

... in geology: Geol. en Mijnb., v. 44, p. 22-36. Page, B. M., J. G. Marks, and G. W. Walker, 1951, Stratigraphy and structure of mountains northeast of Santa...

"G2" Channel Sandstone, Main Pass Block 35 Field, Offshore Louisiana: GEOLOGICAL NOTES

J. A. Hartman

AAPG Bulletin

.... These sediments were deposited in front of a delta system which, based on interpretation of the directional data obtained from a wireline core...

Mineral Distribution Patterns, Deep Gulf of Mexico

S. B. Devine , R. E. Ferrell, Jr. , G. K. Billings

AAPG Bulletin

... as a useful geologic tool in the investigation of directional properties of sediments. The 48 sediment samples processed were obtained from the deep Gulf...

Volume Factor in Paleocurrent Analysis: GEOLOGIC NOTES

Martin H. Iriondo

AAPG Bulletin

... that the vector mean is the best directional parameter. The use of strictly circular (Wood and Wood, 1966) and spherical (Steinmetz, 1962) distributions also...

Pump-Like Tidal Driving of Tectonic Plates: GEOLOGIC NOTES

George W. Moore

AAPG Bulletin

... lines without directional change until the local driving force ceases to exist at the time of total consumption. Also, rise crests such as the Mid...

Measurement of Subsurface Fractures from Dipmeter Logs

E. A. Babcock

AAPG Bulletin

... at 8,063 ft (2,458 m) where the tool leaves the zone of breakouts. REPLOTTED LOGS The directional overbreak phenomenon can best be studied by replotting...

Developments in Michigan in 1979

Garland D. Ells

AAPG Bulletin

...% of the exploratory and development footage drilled in the northern district. DIRECTIONAL DRILLING Directionally drilled holes continue to be a part...

1999 Eastern Section Meeting, September 19-21, 1999, Indianapolis, Indiana - Abstracts, #90926 (1999).

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Geological Modeling for Simulation Studies

W. J. E. Van De Graaff P. J. Ealey

AAPG Bulletin

... of directional permeability within a sand body are the most critical parameters. At a smaller scale, the influence of cross-bedding on displacement processes...