Gaining Insight into Formation Anisotropy Using Full Azimuth Imaging and Analysis Tools

Duane Dopkin, Anat Canning, Philip Neri

Indonesian Petroleum Association

... a detailed automatic residual moveout/velocity analysis in a robust and effective way. MULTI AZIMUTH VELOCITY ANALYSIS There are two ways to deal...

EXPLORATION PROBLEMS OF THE WILLISTON BASIN*

K. E. BURG

Montana Geological Society

... indicate the time in tenths of a second earlier and later than the Jurrasic. The westward time divergence between the three top reflections...

Fault Interpretation Problems in the Southeast Barrow Sub-Basin

R. K. Whyte

Petroleum Exploration Society of Australia (PESA)

.... This paper is concerned with two of them. First, the fault profiles can be complex, variable and difficult to interpret accurately. Second, those parts...

Seismic Reservoir Characterisation of a Channel Sand Oil and Gas Field, Malaysia (Paper A11)

T. J. Focht, M. Sams, D. Brookes, J. Ting

Geological Society of Malaysia (GSM)

... anomaly down dip to the south. Two encountered gas, oil, and water. All three penetrated approximately 30 meters of good quality, channel sandstone...

Hybrid Velocity Model Building: 3D Ocean Bottom Cable (OBC) Orthorhombic Full Waveform Inversion (FWI) Depth Imaging of a Complex Geological Structure, Western Berau - Papua, Indonesia

Purbo Santoso, Yayat Supriatna, Tepy Septyana, Leo Tjahjadi, Yonghe Guo

Indonesian Petroleum Association

... geophysical problems (Tsvankin, 1997). It is usually regarded as the most practical realistic approximation of earth subsurface because it combines...

Designing Coal-Bed Methane Seismic Acquisition Survey Parameters Using Finite Difference Modeling

Abdul Haris, Befriko Murdianto, Adriansyah

Indonesian Petroleum Association

... of the wavefield, shot records, as well as exploding reflector models. FD can be implemented using second order and fourth order approximation...

A New Method of Multiple Attenuation: Multiple Identification and Subtraction

Search and Discovery.com

... significant 10 ms moveout multiple (Figure 1 (f) and (g)). In second synthetic data example (model B) there are twenty five events with many overlaps...

Modified Residual Migration

Craig J. Beasley, Rolf Klotz

Southeast Asia Petroleum Exploration Society (SEAPEX)

..., that can readily incorporate dip-dependent velocity. However, as discussed below, in practice, a small-dip approximation to equation (2) can be used...

Seismic Reflections from a Lau Basin Magma Chamber

Janet L. Morton, Norman H. Sleep

Circum Pacific Council Publications

... stacking, migration, and dip filtering. For a deterministic deconvolution it is necessary to have an estimate of the source wavelet. In an area...

Data Enhancement from a 486-Channel Streamer

Bill Dragoset, Ken Larner

Pacific Section of AAPG

... frequency components. The amount of attenuation depends on the velocity distribution, array length and offset, and reflector dip and depth. Figure 5...

High-End Model Building Techniques for Revealing a Pre-Carbonate Reservoir Offshore East Natuna Basin, Indonesia

Jun Wang, Yonghe Guo, Yitao Chen, Muhammad Nauvall Juliansyah, Nick Crabtree

Indonesian Petroleum Association

... depth, enhanced high-definition tomography (EHD tomography; Reinier et al., 2021) was then applied. EHD tomography exploits offset-dependent dip...

Chart Migrations

Frank A. Roberts

Oklahoma City Geological Society

...Chart Migrations Frank A. Roberts 1958 305 307 1 Pirson, Sylvain J.: "Practical Graphical and Approximation Methods for Dip Shooting Calculations...

Abstract: 3D Coil Shooting Survey on Tulip Field: Data Processing Overview … Planning, Challenges and Opportunities (Geophysics Poster 18)

Michelle Tham, Michele Buia, Riccardo Vercesi, Swee Leng Ng, Andreas Tyasbudi Waluyo, Suyang Chen

Geological Society of Malaysia (GSM)

... proportional to the curvature radius of the circles being acquired and proportionally related to any apparent crossflow of currents. The second aspect...

Getting it Right the First Time in the Ceduna Sub-Basin: Regional and Target Depth Imaging in a Frontier Setting

Weidi Koh

Australian Petroleum Production & Exploration Association (APPEA) Journal

... and execution optimised efficiency, enabling a large survey to be acquired in less than one season. Second, the paper shows how a customised imaging and highly...

Appendix A: Considerations for Optimum 3-D Survey Design, Acquisition and Processing

R. Malcolm Lansley

AAPG Special Volumes

... particular algorithm to correctly retain true amplitude of the signal should be verified before its use. Dip moveout (DMO) is used to compensate...

Considerations in Azimuthal Processing and Velocity Inversion for Unconventional Plays

Michael J. Perz, William Keller, Victor Kriechbaum

Unconventional Resources Technology Conference (URTEC)

... sensitivity of maximum angle to the quality of the azimuthal RMS inversion, one likely explanation is that our elliptical moveout approximation is failing...

Problem of Secondary Tilt--Harker's Solution Corrected

Edmund M. Spieker

AAPG Bulletin

... of the resulting dip when any initially inclined plane is rotated anew in a direction different from the first, or the reverse--is likely to give the non...

The Application of 2D Common-Offset Common-Reflection-Surface (CO CRS) Stack Method Towards Synthetic Data

Parapaty Halley, Rachmat Sule, Teuku Abdullah Sanny

Indonesian Petroleum Association

..., only in the vicinity of the selected point, an approximate hyperbolic moveout. The application of the CO CRS stack to the synthetic dataset is shown...

Advanced Reprocessing and Imaging: Enhancing Legacy Surveys

Dominic Fell, Shane Westlake, Richard Patenall, Jennifer Badry

Petroleum Exploration Society of Australia (PESA)

... for migration. These data were subsequently input to the second phase of the reprocessing which focused on deriving a detailed and accurate earth model...

Seismic Characterization of the Fiordland Gas-hydrate Province, New Zealand

Miko Fohrmann, Andrew R. Gorman, Ingo A. Pecher

AAPG Special Volumes

...), compensation for spherical divergence, Wiener deconvolution, a dip-moveout (DMO) correction, NMO corrections, inner trace mute for shallow areas...

Application of Advanced Depth Imaging Technology in Shallow Water Offshore Indonesia

Michael Gidding, Suyang Chen, Steven Wiseman, Moch Asrori, Richard Bolton

Indonesian Petroleum Association

... accuracy is also improved when a 3D dip field is included in the inversion process. After each tomography loop a new dip field is calculated. Successive...

Calculation of Stratigraphic Thickness in Parallel Folds: GEOLOGICAL NOTES

John B. Mertie, Jr.

AAPG Bulletin

... an approximation to the true thickness. First, it is two-dimensional instead of three-dimensional; and second, it assumes in those two dimensions a circular...

Non-First-Break Solution for Shallow Velocity Anomaly Problem; #41602 (2015)

Emil Blias

Search and Discovery.com

... to the connection between the second-order derivatives of the two forms: For the model with a horizontal shallow layer with slowness, s(x) formula (1) becomes...

5D Interpolation Adds Value at the Drill Bit for a Texas 3D Seismic Survey

K. Rene‘ Mott, William Keller, Mike Perz

GCAGS Transactions

... for imaging shallow targets. Original Processing Workflow Geometry, Trace scaling, Surface consistent deconvolution, Statics, Dip moveout...

Growth Fault-Bend Folding at Southeast Lost Hills, San Joaquin Valley, California

Donald A. Medwedeff

AAPG Bulletin

... indicate the fold is composed of large panels of constant dip separated by small regions of high curvature (Figure 3). Approximation of Lost Hills...