Drilling-Time Logs and Their Uses: GEOLOGICAL NOTES

Robin Willis , R. S. Ballantyne, Jr.

AAPG Bulletin

... bottom, when making connections or changing tour. A sample of such a log follows. Table The curve is plotted with a vertical scale of one inch...

Unusual Tridactyl Trackways With Tail Traces from the Lower Cretaceous Hekou Group, Gansu Province, China

Masato Fujita, Yuong-Nam Lee, Yoichi Azuma, Daqing Li

PALAIOS

... wrinkles in the grooves, coupled with backward drag marks at the rear of the tracks, indicate that the tracks and grooves are true tracks. We interpret...

Lineaments: Their Role in Tectonics of Central Rocky Mountains: A Discussion

Donald S. Stone

Earth Science Bulletin (WGA)

... to require thoughtful consideration. Figure 1. Conceptual Model of simple left wrench fault: Top –block diagram; middle –plan view; bottom –vertical...

Horizontal Drilling in the Dos Cuadras Field

J. David Payne

Pacific Section of AAPG

.... C., Wick, C., and Burgess, T.: “Designing Well Paths To Reduce Drag and Torque,” SPE Drilling Engineering (December 1987) 344-50. Johancsik, C...

The Threshold of Sediment Movement Under Oscillatory Water Waves

Paul D. Komar, Martin C. Miller

Journal of Sedimentary Research (SEPM)

..., due to the effects of bottom drag, a boundary layer is developed. This boundary layer is important in that initiation of sediment movement will occur...

Structural Modification of Corals in Relation to Waves and Currents: Reef Biota

Richard R. Graus , John A. Chamberlain Jr. , Alexa M. Boker

AAPG Special Volumes

.... Aller, and J. Thomson, Jr., 1974, Coral growth related to resuspension of bottom sediments: Nature, v. 297, p. 574-577. Foerster, J. W., 1968...

The Effects of Entrainment on the Hydraulic Equivalence Relationships of Light and Heavy Minerals in Sands

Rudy L. Slingerland

Journal of Sedimentary Research (SEPM)

... using ranges of R*, the boundary Reynolds number, and d/BKS, the ratio of grain size in question to the bottom roughness grain size. If R* is less...

Structural Features of Continental Shelf, Slope, and Scarp, Northeastern Gulf of Mexico: GEOLOGICAL NOTES

John Antoine , William Bryant , Bill Jones

AAPG Bulletin

... with indurated, highly fossiliferous limestone at the bottom. The limestone Fig. 1. Location of seismic reflection lines, northeast Gulf of Mexico...

The Geometry and Dynamics of Low-Relief Bed Forms in Heterogeneous Sediment in a Laboratory Channel, and their Relationship to Water Flow and Sediment Transport

Sean J. Bennett , John S. Bridge

Journal of Sedimentary Research (SEPM)

... along the stoss side. Bed-load sheets had little associated form drag. Low-relief bars were 10-17 mm high and 1.7-2.4 m long, and typical migration rates...

Experiments on Soft-Rock Deformation

R. E. Rettger

AAPG Bulletin

... (3d ed., 1931), p. 78. End_Page 272------------------------------ depth of water (Fig. 2). Another tank similar in size, but with a movable bottom...

Some Simple Devices for the Study of Wave Induced Surges: NOTES

Herbert J. Summers , Harold D. Palmer , David O. Cook

Journal of Sedimentary Research (SEPM)

...), Surge velocity, generated by waves near bottom in the inner continental shelf, has been measured using the pendulum principle to indicate current...

Primary Sedimentary Structures Formed by Turbidity Currents and Related Resedimentation Mechanisms

John E. Sanders

Special Publications of SEPM

... The conditions of drag at the base of a turbidity current vary widely and range from low drag where the bottom is cohesive to large drag where the bottom...

Penecontemporaneous Recumbent Folds in Trough Cross-Bedding of Pleistocene Sands in Saskatchewan, Canada

Hugh E. Hendry, Mel R. Stauffer

Journal of Sedimentary Research (SEPM)

.... It is believed that the folding was caused by frictional drag as a result of the passage of a mass of saturated sand over the surface of the cross-bedded sand...

Thin-skinned Gravity Sliding as a Mechanism for Growth Faulting: Unit 10: Principles

Martin P. A. Jackson, William E. Galloway

AAPG Special Volumes

... in the "active" head and planar reverse faults in the "passive" toe. In strata overpressured below the depth Zip (fig. 4, bottom) all faults curve because...

Centrifuge Simulations of the Interaction Between Folding,Faulting and Diapirism During Regional Extension

Search and Discovery.com

... intelayered modelling clay+silicone/silicone layers, and the deformation of early faults (red and blue). Bottom: gOcad reconstructions based on serial CT...

Marine Erosion of Glacial Deposits in Massachusetts Bay

H. C. Stetson, Marshall Schalk

Journal of Sedimentary Research (SEPM)

... of the bottom. Similar conditions are found on the north shore. To the man operating the drag dredge it is an easy matter to tell by the feel...

New Data on Experimental Production of Sedimentary Structures

Stanislaw Dzulynski

Journal of Sedimentary Research (SEPM)

... produced experimentally. Base of an artificial turbidite. FIG. 2. [Grey Scale] Moulds of longitudinal current ridges on bottom surface of a sandstone...

Applications of Hydraulics to the Study of Marine Turbidity Currents

Henry W. Menard, John C. Ludwick

Special Publications of SEPM

... if the current is moving very fast, but the faster the current velocity the greater the drag exerted by the bottom and the surrounding water...

Abstract: Challenges of 4C Seismic Acquisition and Processing Offshore Sarawak (Paper 21)

Cyril Wong

Geological Society of Malaysia (GSM)

... being dominated by 2D and multi streamer 3D seismic acquisitions. However in recent years it has diversified to include ocean bottom recording...

Oscillation Ripples: DISCUSSION

Cyril Galvin

Journal of Sedimentary Research (SEPM)

... of drag on naturally rippled sand beds under oscillatory flows: Extended abstracts for the 17th International Conference on Coastal Engineering...

Challenges And Solutions Associated With Drilling Deviated Wells In Alternate Soft-Hard Formations -A Case Study From Onshore Kg Basin, India

Search and Discovery.com

Advanced Flowback in the Powder River Basin: Securing Stimulation Investments

Mario Campos, Dmitriy Potapenko, Katharine Moncada, Jayanth Krishnamurthy

Unconventional Resources Technology Conference (URTEC)

... in horizontal pipes, see Soepian et al. 2014). Mitigate risk of fracture disconnection from wellbore Proppant flowback occurs when the drag force...

FOOTFALL PATTERN OF A BOTTOM-WALKING CROCODILE (CROCODYLUS ACUTUS)

JAMES O. FARLOW, NATHAN J. ROBINSON, MORGAN L. TURNER, JENELL BLACK, STEPHEN M. GATESY

PALAIOS

... and the substrate, in which the hand or foot dragged against the bottom without deliberately being pressed into it by the crocodile. The left manus made a long drag...

STRUCTURAL GEOMETRY ALONG THE TENSLEEP FAULT BIGHORN BASIN, WYOMING

M. Lee Allison

Montana Geological Society

... and generalized geology of the Bighorn Mountains and Basin. Dashed outline marks area studied, shown enlarged at bottom...

Bedforms in the Pitt River, British Columbia

Gail M. Ashley

Dallas Geological Society

... profile toward the bed. Bedforms on channel bottom are predominantly flood oriented and the form resistnace (drag coefficient) would be expected to change...