Determination of Widths of Meander-Belt Sandstone Reservoirs from Vertical Downhole Data, Mesaverde Group, Piceance Creek Basin, Colorado

John C. Lorenz , David M. Heinze , James A. Clark , Craig A. Searls

AAPG Bulletin

.... 1101-1104. Peterson, R. E., and J. B. Kohout, 1982, An approximation of continuity of lenticular Mesaverde sandstone lenses, utilizing close well...

Visualizing lateral anisotropy in modern carbonates

Sam J. Purkis, Brigitte Vlaswinkel

AAPG Bulletin

... when its pattern of spatial variability changes with direction. For example, in a carbonate depositional landscape, if a dip-oriented transect across...

Microseismic at HFTS2: A Story of Three Stimulated Wells

Vladimir Grechka, Bo Howell, Zhao Li, Denise Furtado, Collin Straus

Unconventional Resources Technology Conference (URTEC)

...- and S- waves picked in at least one vertical and one horizontal array. The second path is to locate the events using joint inversion or tomography...

"Condemned Prospects"--A Challenge to the South Louisiana Geologist

Owen C. Brown, Jr.

GCAGS Transactions

... to the northwest. This second test immediately set up the area as prospective, due to the 70 feet of northwest dip which existed between these two wells. In 1950...

A New Method of Expressing Particle Sphericity

Bert C. Aschenbrenner

Journal of Sedimentary Research (SEPM)

... to the shape analysis of the component grains of a sandstone sample is demonstrated in the second part. Various pertinent details are presented...

Enhancing full-waveform inversion with a deep-learning approximated inverse Hessian: A field data application

Mustafa Alfarhan, Matteo Ravasi, Fuqiang Chen, Tariq Alkhalifah

International Meeting for Applied Geoscience and Energy (IMAGE)

... for the model. The update includes the first and second derivatives of the misfit function with respect to the model parameters, also known...

Experience with Seismic Lithology (AVO) in Central Sumatra

Jeff Wright, Isdjulaedi Bakri, Budi Subiyanto

Indonesian Petroleum Association

... of these events increases with offset when proper amplitude and array attenuation corrections are applied. The second example, from the Jambi Basin over...

Enhancing 4D seismic repeatability by utilizing more of the acquired streamer seismic data

Dez Chu, Yan Jia, Mike Helgerud

International Meeting for Applied Geoscience and Energy (IMAGE)

... with enhanced repeatability and reduced 4D interpretation uncertainty. amplitude, moveout, 3D dips, and coherency, the most powerful noise attenuation...

Building a three-dimensional near-surface geologic and petrophysical model based on borehole data: A case study from Chemery, Paris Basin, France

Paola Sala, Marcel Frehner, Nicola Tisato, O. Adrian Pfiffner

AAPG Bulletin

... interfaces as well as isopach maps for the formations were created to ease the detection of structural anomalies in the data, in particular, localized dip...

Abstract: The Implications of Overlooked Early E-W Neoproterozoic Structures on Gold Mineralization in Northern Ethiopia, by Y. Admassu, D. Holm, and L. Friberg; #90087 (2009).

Search and Discovery.com

Magnetotelluric Soundings in the Ouchita Thrust Belt of Central Texas

J. G. Muncey , W. J. Ehni

GCAGS Transactions

... of the traverse, appears to dip steeply to the northwest beneath the resistive "Llano-type" basement. A second resistive interval appears deep within...

Borehole tube wave generation by an incident P-wave at a fluid-filled fracture

Abdullah Alsawidan

International Meeting for Applied Geoscience and Energy (IMAGE)

... that Darcy’s flow assumption is only a low-frequency approximation. Tang & Cheng (1989) solved a system of governing equations with boundary...

Magnetics: Part 7. Geophysical Methods

Michael S. Reford

AAPG Special Volumes

... approximation of this field, usually removed in processing survey data to make it easier to study the anomalies caused by crustal rocks. The IGRF is regularly...

Transport and Deposition of Resedimented Conglomerates: The Cap Enrage Formation, Cambro-ordovician, Gaspe, Quebec

Ian C. Davies, Roger G. Walker

Journal of Sedimentary Research (SEPM)

... dip either eastward, or westward, within individual beds; the second consists of concave-upward quartzpebble layers which dip eastward and westward...

Investigation of the Impact of Condensate Blockage on Well Productivity in a Tight Gas Condensate Reservoir … Case Study of Tawes Field

Agung Ertanto, Lukman Hidayat, Imaduddin Kartoatmodjo, Ludy Andria

Indonesian Petroleum Association

... skin, equivalent effective well radius, transmissibility multiplier and Local Grid Refinement (LGR). Negative skin can provide an approximation of flow...

The Prudhoe Bay Field

F. K. Rickwood

Pacific Section of AAPG

... than 2° except in the immediate vicinity of faults. The dip on the northern flank of the arch is slightly steeper than that on the south. On the long...

Structure of The Fairholme Range, Alberta

E. L. Fitzgerald

CSPG Bulletin

... shows the detail of the upper slopes viewed from the south. Apparent dip separation on the faults of the Black Rock imbricate belt averages 500 feet. Most...

A Regional Analysis of Fault Reactivation and Seal Integrity Based on Geomechanical Modeling: An Example from the Bight Basin, Australia

S. D. Reynolds, E. Paraschivoiu, R. R. Hillis, G. W. O'Brien

AAPG Special Volumes

.... In all cases investigated, faults striking 40(15)N of any dip are the least likely to be reactivated. Thus, traps requiring such faults to be sealing...

Abstract: AVO Theory for Large Contrast Elastic and Anelastic Targets in Pre-Critical Regimes; #90187 (2014)

Kris Innanen

Search and Discovery.com

... order terms of the RPS approximation and their second order corrections: where For small perturbations and small angles, the first two terms...

Integration of Outcrop and Modern Analogs in Reservoir Modeling: Overview with Examples from the Bahamas

G. Michael Grammer, Paul M. Mitch Harris, Gregor P. Eberli

AAPG Special Volumes

... integrated approach: SEPM Special Publication 42, p. 155181.Sarg, J. F., J. R. Markello, and L. J. Weber, 1999, The second-order cycle, carbonate-platform...

Approximation of Thermal Gradient in Southeastern New Mexico Using Bottom-Hole Temperatures from Electric Logs

W. K. Summers

AAPG Bulletin

...Approximation of Thermal Gradient in Southeastern New Mexico Using Bottom-Hole Temperatures from Electric Logs W. K. Summers 1972 2072 2074 56 10...

An Allostratigraphic Framework for a Retrogradational Delta Complex: The Uppermost Dunvegan Formation (Cenomanian) in Subsurface and Outcrop, Alberta and British Columbia

Michael J. Hay, A. Guy Plint

CSPG Bulletin

... alloformation (Fig. 1A). Figure 1. 1A. Schematic NW-SE dip section (drawn to scale) showing the overall geometry of Dunvegan allomembers J...

Pitfalls in Statistics for Environmental Sampling Evaluation

Yue Rong

Environmental Geosciences (DEG)

.... The first one is the use of t -distribution to determine minimum sample size; the second is the test of proportions for analyzing a large number...

Geothermal Energy

Elliot N. Yearsley, Geo ExPro Staff

GEO ExPro Magazine

..., a fluid temperature of 180°C contains an enthalpy of 763 kJ/kg. A mass rate of 80 kg/s (equivalent to 90 Liters per second) with an exit temperature...

The Evaluation of an Oil Discovery: How to Locate the Second, Third and Fourth Wells

Parke A. Dickey

Southeast Asia Petroleum Exploration Society (SEAPEX)

...The Evaluation of an Oil Discovery: How to Locate the Second, Third and Fourth Wells Parke A. Dickey 1980 107 123 In offshore areas and in remote...