Quantitative Petrophysical AVO Error Analysis in a Layered Model

Search and Discovery.com

... note that in Class 2 cases (Table 1), in which elastic contrast across the boundary is small, both vertical-component and angle errors could lead...

A Gravity Survey of Perlis, Kedah and Penang

Alan J. Burley, Jamaluden Othman

Geological Society of Malaysia (GSM)

... of the station which reduces all values to a constant height, in this case mean sea-leveL The effect of an error of 100 m in position on the normal gravity...

Prediction of Normal-Fault Geometries--A Sensitivity Analysis

Martha Oliver Withjack, Eric T. Peterson

AAPG Bulletin

... and location, fold shape, and hanging-wall deformation mechanism. (b) Inclined simple shear as the hanging-wall deformation mechanism. The shear angle...

Seismic Interpretation of the Casper Arch Thrust, Tepee Flats Field, Wyoming

R. Randy Ray, Charles R. Berg

Rocky Mountain Association of Geologists

..., affecting the migration of reflectors and causing errors in the correct depth location of migrated events. in seismic migration are difficult to visualize...

Recent Developments in Gravity Prospecting on Gulf Coast

Olaf F. Sundt

AAPG Bulletin

... of permits for work on the southeast necessitated interpolation of isogams over large distances in order to effect the necessary closures. Averaging...

A New Method for Handling the Nugget Effect in Kriging

K. Krivoruchko, A. Gribov, J. M. Ver Hoef

AAPG Special Volumes

... are realizations of a spatially autocorrelated process with independent random errors represented bywhere Zt(s) denotes the t th realization at location s. Let...

A Gravity and Magnetic Survey of the Ute Mountain Ute Indian Reservation, Colorado and New Mexico

Michael W. Webring, Gerda A. Abrams

Utah Geological Association

... sea level at the approximate location of the Moho and its effect calculated at the average elevation of the reservation. This technique is equivalent...

Seismic Anisotropic Fracture Characterization using Azimuthal Amplitude versus Angle (AVAZ) Combined with Azimuthal Frequency versus Angle (FVAZ)

Salah El Din R Mahmoud, Hassan Al-Marzooqi, Maryam Alqaydi, Amna Alharthi, Muhammad Z. Baig, Abdulla A. Al-Hashmi

Unconventional Resources Technology Conference (URTEC)

...Seismic Anisotropic Fracture Characterization using Azimuthal Amplitude versus Angle (AVAZ) Combined with Azimuthal Frequency versus Angle (FVAZ...

Measurement and Error in Regional Stratigraphic Analysis

W. C. Krumbein

Journal of Sedimentary Research (SEPM)

... is to formalize recognition and evaluation of errors that may occur in facies maps. The effect of errors of measurement and of judgment tends to become...

Regional Gravity Survey of the Caledonia Highlands Area of Southern New Brunswick

Kenneth B. S. Burke

Atlantic Geology

... and increasing the station density in other areas. However, as the study progressed, it was found that large elevation and tie-in errors were contained...

Refraction Statics, A Comparison Among Processing Contractors

Bambang Sudewo

Indonesian Petroleum Association

... this processor's refraction statics routine. It built time-distance plot for station locations as shot locations as well as geophone location, so more statistics...

Microearthquake Studies Across the Basin and Range-Colorado Plateau Transition in Central Utah

Mary E. McKee, Walter J. Arabasz

Utah Geological Association

...) technique (e.g., Dewey, 1979) to improve the relative location of events. A major advantage of the JHD technique is that station adjustments are calculated...

Crustal Structure Study on Gulf Coast of Texas

A. L. Hales , C. E. Helsley , J. B. Nation

AAPG Bulletin

... are shown relative to station L4 an the station residuals relative to shot 515. The standard errors also are indicated. On land the reduced travel time...

EXTENDED ABSTRACT: Stuart City Margin Architectural Variability and the Effect of Regional Structural Heterogeneity

Ryan M. Phelps, Charles Kerans, Lowell Waite, Chris Zahm

GCAGS Transactions

... that the terminal location of the underlying Sligo reef (Aptian) caused variations in the dip angle of Stuart City clinoforms, leading to lower-angle progradational...

Normal Geothermal Gradient in United States

C. E. Van Orstrand

AAPG Bulletin

... the values of the excess of soil temperature over air temperature and the annual mean temperature of the air at the station are known more accurately...

Determination of Density from Seismic Data; #42456 (2019)

Ritesh Kumar Sharma, Satinder Chopra

Search and Discovery.com

... as it is supposed to represent the ground truth, but it is only available at the location of boreholes. Estimating density from seismic data is thus a desirable goal...

Sea-Level Rise and Subsidence in Louisiana and the Gulf of Mexico

Karen E. Ramsey, Shea Penland

GCAGS Transactions

... Station, Technical Report 3 - 483. Kosters, E., 1989, Organic-clastic Facies Relationships and Chronostratigraphy of the Barataria Interlobe Basin...

The Stratigraphy and Structure of the Vendom Fiord Area1

Peter Mcgill

CSPG Bulletin

... in relation to the eastern Arctic Islands. End_Page 362------------------------ Figure 2. Location map showing outcrop sections and lines...

Contemporary Seismicity and Tectonics of the Northern and Central Coast Ranges-Sierran Block Boundary Zone, California

Ivan G. Wong, Richard W. Ely, Auriel C. Kollmann

Pacific Section of AAPG

... of the epicentral location. The nearest station for half of the events was at least 20 km away. The computed focal depths were shallow, less than 2 km, for several...

Ebb-Tidal Delta Morphology and Sediment Supply in Relation to Seasonal Wave Energy Flux, North Inlet, South Carolina

Robert J. Finley

Journal of Sedimentary Research (SEPM)

... by the longshore energy flux factor (P1s). Four stations were monitored, two on either side of the inlet, and the station just downdrift of the inlet...

Induced seismicity hypocentral depth stability and sensitivity to Vp/Vs in the South Delaware Basin, West Texas

Alexandros Savvaidis, Anthony Lomax, Robin Dommisse, Caroline Breton, Matthew Shirley, Vincent OSullivan

International Meeting for Applied Geoscience and Energy (IMAGE)

...) construct a general procedure for avoiding location depth instability due to the Ochoan layer, and 2) explore the change in hypocenter depths...

Geomechanical modeling of an extensional fault-propagation fold: Big Brushy Canyon monocline, Sierra Del Carmen, Texas

Kevin J. Smart, David A. Ferrill, Alan P. Morris, Barron J. Bichon, David S. Riha, Luc Huyse

AAPG Bulletin

... at one location (station 76), the northeast-striking fractures have anomalously low dip (52) compared to the rest of the study area. The highest...

SEISMOLOGICAL STUDY OF THE CARACAS EARTHQUAKE OF 15 APRIL, 1960 AND PROBLEMS OF EARTHQUAKE PREDICTION

Günther Fiedler

Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)

...n of the azimuth, that is the angle between North, the seismic station and the focus, was made by the determination of the direction of the first oscillatio...

Gravity Survey of the Guffey Volcanic Center, Thirtynine Mile Volcanic Field, Park County, Colorado

Gregory A. Wimpey, Mark Andrew Tinker

Bulletin of South Texas Geological Society

... to achieve an overall accuracy of better than 0.1 mGal, and it was necessary to survey each gravity station. We employed a Lietz SET4 Total Station...

Simulation of Recovery Losses due to Positional Errors in Wellbore Placement

Stefan Maus, Jarrod S. DeVerse

Unconventional Resources Technology Conference (URTEC)

... Referencing (IFR) and multi-station analysis (MSA). This reduces the survey errors, thus improving the accuracy of the wellbore placement (Maus and DeVerse...