Land 3D Acquisition Techniques Related to S.E. Asian Situation

Walter Ritchie

Indonesian Petroleum Association

... direction. All traces within a 2D line of profile have a common raypath plane azimuth and a common velocity can be applied to each trace within each CDP...

The Use of Physical Modeling to Resolve Offshore Seismic Problems

B. J. Evans, M. Urosevic

Indonesian Petroleum Association

... study progressed on defining the parameter which led to this improvement in record quality. Different transducers of different frequencies were tested...

Active-seismic monitoring of pore pressure changes in an analog reservoir

Tanner Shadoan, Jonathan Ajo-Franklin, Jeremy R. Patterson, Tieyuan Zhu

International Meeting for Applied Geoscience and Energy (IMAGE)

... and the long injection on day two. A representative delay-time curve of a CASSM source-receiver pair whose raypath travels through the upper reservoir...

VSP Guided Reprocessing and Inversion of Surface Seismic Data

R. Gir, Dominique Pajot, Serge Des Ligneris

Southeast Asia Petroleum Exploration Society (SEAPEX)

... time shift, and can be caused by raypath geometry differences between the two physical measurements. Source wavelet differences, in which...

Undrilled Reserves in Cook Inlet Oil Fields, Alaska

Robert A. Bishop

Circum Pacific Council Publications

... today, most geophysicists would still put thrusts or at least high-angle reverse faults on profiles showing such gaps. However, raypath models have...

Determination of Velocity Model by Using NIP-Wave Tomographic Inversion: Application to Synthetic and Real Data

A. Hendriyana, R. Sule, Y. Akbar, L.A. Poerwaka, T.A. Sanny, Sardjito, Waluyo, Adriansyah

Indonesian Petroleum Association

... picked. Normal ray that propagates to the surface along a raypath connected reflector-surface characterized by, • • Its normal ray one-way traveltime...

Seismic Detection of Gas in Cretaceous Sandstones and Fractured Sandstones

Walter E. Johnson, William T. Brown Jr., James B. Peterson

Rocky Mountain Association of Geologists

... and are recorded at different receiver locations. Coincidentally, each raypath has a different offset from the source to the receiver. Secondly, the quality...

Case Study - Advanced Seismic Acquisitions and Processing Results in Indonesia

Michele Buia, Bakhrudin Mansyur, Herastya Iman Priyonggo

Indonesian Petroleum Association

... and irregularities causes a non homogeneous behaviour of the illumination in the subsurface and a complex 3D raypath for surface and internal multiples. Complex deep...

High - Quality, Efficient Broadband Acquisition & Processing-An Integrated Approach

Richard Patenall, Dominic Fell, Timothy Brice, Saeeda Hydal

Indonesian Petroleum Association

.... For tomography to converge to the correct solution, 3D azimuth information is required to calculate the differentials along the source-receiver raypath...

Subsurface seismic imaging using drill bit noise

Mehdi Asgharzadeh, Ashley Grant, Andrej Bona, Milovan Urosevic

Petroleum Exploration Society of Australia (PESA)

.... In Figure 1, the phase associated with common raypath (BC) for sources A and B, is cancelled after cross-correlation of traces recorded by downhole...

Broadband Data from Flat Streamers: Considerations for Acquisition and Processing

Phil Fontona, Edward Hager

Indonesian Petroleum Association

... the source or receiver depth, and Θ can be either the emission or incidence angle of the raypath. Figure 5shows spectra for an air gun array at 6m...

Stratigraphic and Structural Interpretations Using Diffraction Seismograms

Richard K. Snavely , A.K.M. Sarwar

GCAGS Transactions

... as evidence of abrupt discontinuities, such as faults and truncations, in the subsurface reflector geometry. Also in raypath geometry, as in this model...

Velocity and Velocity

M. Al-Chalabi

Petroleum Exploration Society of Australia (PESA)

... PreSDM results require the use of a provelocity field, a modelling 'velocity' parameter. Due to numerous factors that affect the data right from...

Seismic Imaging at Conger: Lessons Learned in Gulf of Mexico Subsalt Imaging

Thomas C. Bergeon, Brad A. Robison

GCAGS Transactions

... improvement in continuity. However, the pre-stack data still show effects of a complex velocity field, raypath and illumination problems, salt...

A Comparison of Prestack Depth and Prestack Time Imaging of the Paktoa Complex, Canadian Beaufort MacKenzie Basin

G. R. Elsley, H. Tieman

AAPG Special Volumes

... is a Kirchoff method, which consists of modeling a single raypath, and the second is a wave equation method, which models an entire wave front. A third method...

Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad

Tony Johns

Search and Discovery.com

... processing. Deeper than 3 km it was initially assumed G=0 with H equating simply to the spatially varying K parameter, in accordance with the (Thomsen, 1986...

Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad

Tony Johns

Search and Discovery.com

... processing. Deeper than 3 km it was initially assumed G=0 with H equating simply to the spatially varying K parameter, in accordance with the (Thomsen, 1986...

Abstract: Black Box Recording of Passive Seismicity: Pitfalls of not Understanding your Acquisition Instrumentation and its Limitations; #90187 (2014)

Ted Urbancic and Andreas Wuestefeld

Search and Discovery.com

... both standard and strong magnet configurations downhole. Depth of deployment was ~2250m. Signals have been rotated into raypath orientation. AAPG...

Abstracts: Oilsands: Not Your Average Seismic Data; #90173 (2015)

David Gray

Search and Discovery.com

... and the shearwaves have followed almost exactly the same raypath, the effect must be due to seismic velocity anisotropy in the overburden (Bale, 2011...

Abstract: Least Squares Pre-Stack Time Migration for Imaging and Reconstruction of Converted Waves; #90224 (2015)

Aaron Stanton

Search and Discovery.com

... least squares migration with a Double Square Root (DSR) operator to express reflectivity as a function of subsurface position and ray parameter...

SYNTHETIC SEISMOGRAMS

Search and Discovery.com

Diving wave tomography: Velocity modelling using first arrival traveltime

Amatul Syafi Abdul Basit, Abdul Rahim Md Arshad, Arulini Permalu

Geological Society of Malaysia (GSM)

... structure. This may lead to incorrect static correction and inaccurate raypath prediction, and by extension inaccurate traveltime calculation. Small...

Structural and stratigraphic control on the migration of a contaminant plume at the P Reactor area, Savannah River site, South Carolina

Antonio E. Cameron Gonzalez, Camelia C. Knapp, Michael G. Waddell, Adrian D. Addison, John M. Shafer

Environmental Geosciences (DEG)

... raypath correction, and (4) picked amplitude correction for geometric and radiation pattern. These corrections and processing steps were applied prior...

GeoConvention 2014; - Abstracts, #90224 (2015).

Search and Discovery.com

Vertical Seismic Profiling in Hydrocarbon Exploration and Reservoir Development

Bob A. Hardage

Circum Pacific Council Publications

... with surface reflection profiling with the raypaths that occur in vertical seismic profiling. This raypath comparison is shown 2 x 2 Figure 5. Diagram...