Abstract: Velocity Updating for Converted-Wave Prestack Time Migration; #90211 (2015)

Xiaogui Miao

Search and Discovery.com

... processing, the velocity ratio gamma (Vp/Vs) is estimated from C-wave data, and the S-wave velocity (Vs) is then derived from Vp and gamma. Therefore, errors...

I. Relation of Structural Section to Seismic Section

Robert E. Sheriff

AAPG Special Volumes

... on the seismic section. Thus a common-depth-point stacked section shows the calculated effect of having a source, and a receiver, coincident with each other...

Abstract: Q-estimation from Uncorrelated Vibroseis VSP Model Data; #90172 (2014)

Arnim B. Haase

Search and Discovery.com

...), and shallower, the near-field dominates, leading to increasing straight line fit errors with decreasing depth Z. Note the convergence of all three V(f...

Abstract: Shear Log Estimation by Rock Physics Assist Machine Learning Approach an Offshore Abu Dhabi Case Study; #91204 (2023)

Hiroyuki Inoue

Search and Discovery.com

..., it is not simple to predict elastic log at the aquifer and historical mid-dip water injection regions and in seismic acquisition year. To solve it, we...

The Suitable Method in Generating True Depth Structure Maps to Eliminate Wonocolo Push-Down Effect on Seismic Data and Its Impact on Prospect Evaluation, North Madura Platform, East Java Basin

Haryono Haryanto, Rizki Krishna Pratama, Riaz Alai, M. Afiq B. Mokhtar, Pongga Wardaya, Yonghe Guo, Jun Wang

Indonesian Petroleum Association

... function method resulted depth structure maps with unsolved push-down effect artifact, as it is not respecting lateral variation of velocity. 3D paleo...

Interpretation of 3-D Data in Delineating a Subunconformity Trap in Block 34/10, Norwegian North Sea

G. T. Saeland, G. S. Simpson

AAPG Special Volumes

.... These errors include marking the section, timing the pick, posting the correct time in the correct position on a base map, and smoothing of data points...

Interpreting Stratal Architecture in Shelf-top Carbonate Systems: an Example from the Seven Rivers Formation, Mckittrick Canyon, New Mexico, U.S.A.

Benjamin P. Smith, Charles Kerans

Journal of Sedimentary Research (SEPM)

...). Conversely, Hunt et al. (2002) proposed a maximum depositional dip of only 2° and challenged the validity of estimates for reef depth, depositional dip...

Question of the Wind River Thrust, Wyoming, Resolved by COCORP Deep Reflection Data and by Gravity Data

Scott B. Smithson, Jon Brewer, S. Kaufman, Jack Oliver, Charles Hurich

Wyoming Geological Association

... by the effect of velocity variations Processing of the reflection data includes CDP sorting velocity analysis, and 24-fold CDP stacking. Then deconvolution...

A Seismic Method for Estimating Subsurface Vp/Vs Ratio Based on Converted Waves: A Case Study From Arabian Gulf

Search and Discovery.com

Inversion History of the West Natuna Basin: Examples from the Cumi-Cumi PSC

D. C. Ginger, W. O. Ardjakusumah, R. J. Hedley, J. Pothecary

Indonesian Petroleum Association

... depth conversion was carried out on a representative line for comparison purposes. Given the other errors inherent in the method and in velocity...

Tectonic and Geodynamic Evolution of the Northern Australian Margin and New Guinea

Joanna Tobin, Sabin Zahirovic, Rakib Hassan, Patrice Rey

Petroleum Exploration Society of Australia (PESA)

... default slab dip of 45° (that can be varied in the plate reconstructions), a radius of curvature, as well as an average sinking velocity. The thermal...

Structural Trend Analysis by Axial Surface Mapping: Discussion

Donald S. Stone

AAPG Bulletin

... to theory Fig. 7. Stacking velocity curves from five dip lines from Texaco/Unocal 3-D survey viewed along strike direction (modified after Mastoris...

Unlocking Potential Reservoir of Pre-Parigi Carbonate to New Opportunity Gas Field; A Case Study of Belut Structure - Offshore North West Java

Lambertus Fransisco Yulianus, Yasinta Dewi Setiawati, Sandra Radiansyah, Prawoto I. Syuhada

Indonesian Petroleum Association

... conversion minimizes pull up velocity effect and provides more realistic depth structure. The level of accuracy from volumetric calculations...

Satellite System for Offshore Surveying

C. D. Lynn

Southeast Asia Petroleum Exploration Society (SEAPEX)

.... The fix accuracy is, however, very dependent on errors in measurements of the ship’s velocity, and a poor estimate of velocity (especially in the north...

Diving wave tomography: Velocity modelling using first arrival traveltime

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

Geological Society of Malaysia (GSM)

... with velocity are the push-down and pull-up effect caused by the discrepancy between recorded traveltime and the actual depth of the structure. It often...

A Coupled Petrophysical-Geophysical Model Demonstrates Velocity Dispersion in a Thin-bedded, Fluvial Reservoir; #40913 (2012)

Richard C. Odom

Search and Discovery.com

... velocity dispersion causing errors in the time-depth chart. Stratigraphic Control The stratigraphic column is bound by regional surfaces...

Cross-Sections of the Parry Islands Fold Belt on Melville Island, Canadian Arctic Islands: Implications for the Timing and Kinematic History of Some Thin-Skinned Decollement Systems

Harrison, J.C., Bally, A.W.

CSPG Bulletin

... as a nearly straight line of constant apparent dip. However, depth conversion would have the effect of widening the highest velocity Thumb Mountain interval...

Extended Abstract: Exploring the Missing Blind Zone in the Gulf of Mexico Shelf

Selim Simon Shaker, Dave Reynolds, Walter W. Wornardt

GCAGS Transactions

... cross over, and reflectivity becomes very weak and occasionally cannot be recognized on the seismic stacking velocity (prestack time migration) lines...

Handling Environmental Effects on Triaxial Induction Tools

Tom Barber, Steve Bonner, Tracy Broussard, Sophia Davydycheva, Dean Homan, Gerald Minerbo, Richard Rosthal, and Hanming Wang

Search and Discovery.com

... simplifies the analysis of the data and eliminates the problems of depth errors between the measurements. All nine couplings between transmitters...

Basic Seismic Processing: Part 7. Geophysical Methods

Peter M. Duncan

AAPG Special Volumes

... such that the reflections from a given horizon will appear flat. This facilitates ide tification of reflectors and stacking. Figure 6 demonstrates the NMO process. Dip...

Quantitative Petrophysical AVO Error Analysis in a Layered Model

Search and Discovery.com

.... By defining an AVO misfit function, we quantitatively measure the AVO inversion errors in a layered rock-physics theoretical model. We especially...

Quantitative Interpretation: Use of Seismic Inversion Data to Directly Estimate Hydrocarbon Reserves and Resources

James Shadlow, Adam Craig, David Christiansen, Robert Mitchell

Petroleum Exploration Society of Australia (PESA)

... intervals are thought to contribute to the errors. Therefore, a new velocity model was required to minimise the depth errors at the wells, so...

An Analysis of a Seismic Reflection from the Base of a Gas Hydrate Zone, Offshore Peru (1)

JOHN J. MILLER , MYUNG W. LEE , and ROLAND VON HUENE

AAPG Bulletin

.... 759-769. Domenico, S. N., 1976, Effect of brine-gas mixture on velocity in an unconsolidated sand reservoir: Geophysics, v. 41, p. 882-894. Ewing...

Case Study - Advanced Seismic Acquisitions and Processing Results in Indonesia

Michele Buia, Bakhrudin Mansyur, Herastya Iman Priyonggo

Indonesian Petroleum Association

... of surveys were modelled using ray tracing on the Aster velocity-depth model. In particular, Eni Indonesia generated three single azimuth surveys...

Serang Field Re-Evaluation

Tom Clark, Joewono Hadiwijoto, Bashir Zagalai, Steve Martinez, Donna Staples

Indonesian Petroleum Association

... across this fault. A velocity model was constructed to reconcile this anomaly. The resultant depth structure map, confirmed by development drilling...