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The AAPG/Datapages Combined Publications Database

Showing 17,690 Results. Searched 200,293 documents.

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Relating Seismic Time to Geological Datum: ABSTRACT

James L. Porter

AAPG Bulletin

... are introduced. Three types of errors are inherent in correcting seismic time to a horizontal datum. These are: (1) if velocity is inaccurate, each change...

1960

High-precision seismic imaging for complex deep structures in the hydrocarbon exploration using a coherent-stacking-based least-squares migration

Jidong Yang, Jianping Huang, Tengfei Lin, Zhenchun Li, and Liang Chen

AAPG Bulletin

... in the migration because of accumulative traveltime errors caused by an inaccurate velocity model. To mitigate this issue, we present a coherent-stack...

2024

The Application of PSDM VTI Method to Generate a Velocity Model That Can Solve the Mistacking Problem

Aulia Ahmad Nafis, Hasan Nurudin, Ikhsan Hanurogo, Bagus Sapto M, Ahmad Zaenudin

Indonesian Petroleum Association

... the strong lateral velocity well so mistacking can be avoided. The With this method, errors in estimating the velocity and the anisotropic effect...

2018

Abstract: Robust Surface-Consistent residual Statics and Phase Correction…Part 1; #90224 (2015)

Nirupama Nagarajappa and Peter Cary

Search and Discovery.com

... and phase corrections are taken care of by surfaceconsistent deconvolution, and the statics solution is applied assuming that no wavelet phase errors...

2015

Abstract: Time-lapse full-waveform inversion: how wrong are we and how do we find out?

Maria Kotsi, Alison Malcolm

Atlantic Geology

... Waveform Inversion (FWI) has been efficiently used to image changes in Earth properties between surveys. The goal of FWI is to deliver a velocity model...

2017

An Interpreters Guide to Successful Prestack Depth Imaging; #41544 (2015)

Rob A. Holt

Search and Discovery.com

... in the time domain where insensitivity to errors in the migration velocity field result in a small loss of focusing that can be relatively easily recovered...

2015

Limitations of Reflection Seismograph

L. E. Nugent, Jr.

AAPG Bulletin

... methods; and (3) under velocity, numerous vagaries and their potential errors are analyzed. It is concluded that surveys which involve only errors...

1953

Limitations of Reflection-Seismic Method: Lessons from Computer Simulations: ABSTRACT

M. T. Taner

AAPG Bulletin

... recent advances in the use of "velocity spectra" models has led to some violations of these important assumptions. The most common types of violations...

1970

ABSTRACT: Reflection Tomography for Validation of Subtle Structures: A Case History from Southern Tunisia; #90051 (2006)

Harald Granser, Oezsen Refik

Search and Discovery.com

... static problems due to sanddunes at surface with low velocities but also by uncertainties in depth-conversion because of velocity variations...

Unknown

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...

2015

NMO Application in VTI Media: Effective and Intrinsic Eta (Geophysics Paper 6)

Joel Starr, Maz Farouki

Geological Society of Malaysia (GSM)

...) stability, how well the curve can tolerate small errors in the estimated velocity field (one would not want small errors in the estimated velocity field...

2008

Conventional Velocity Model Seems to Be the Best!

Hijreen Binti Ismail, M. Izham Kassim, Khairul Hamidi Khalid, Safitri Nurida, Wahyudin Bahri Nasifi, Hendra Iriansyah Darmawan, Rizki Krishna Pratama, M. Anuar Ismail, Noor Azmah Abdullah, Indah Edria Amorita

Indonesian Petroleum Association

... on the statistical report of residual errors, the third model result has the closest fit to well control. INTRODUCTION The area of this velocity study...

2011

Granite and Limestone Velocity Determinations in Arbuckle Mountains, Oklahoma

B. B. Weatherby, W. T. Born, R. L. Harding

AAPG Bulletin

... within observational errors and yield a value of 17,950 ft./sec. for the longitudinal wave velocity. The data taken over the shorter span show...

1934

Depth conversion and seismic inversion of the Scarborough gas field

Joseph Kremor, Manish Agarwal, Paul Spaans, Ung Sing Wong

Petroleum Exploration Society of Australia (PESA)

.... This resulted in depth errors at the geophysical markers. Then, using these depth errors, a fast track velocity model was generated and the seismic and relative...

2019

A New Approach to Time Depth Conversion and Depth Error Estimation for 2D Interpretation Using Seismic Velocities

Rosidah Hardiani, Sanisah Soed, Lothar Schulte

Indonesian Petroleum Association

... delivers smaller depth errors for the lower horizon than the average velocity approach. Apparently, smoothing * ** PETRONAS Carigali Sdn Bhd,Malaysia...

2013

Application of Full Waveform Inversion to Resolve an Eroded Shallow Carbonate Platform, North Madura, East Java, Indonesia

David Cavalin, Nurrul Ismail, Tom Paten, Kola Agbebi, Dave Lim

Indonesian Petroleum Association

... frequencies of the recorded data to drive a more complex velocity model update technique: Full Waveform Inversion (FWI). Standard traveltime...

2019

Effects of near Surface Lithology on Velocity Modelling and Time„Depth Relationships in the Cooper„Eromanga„Lake Eyre Basin

Anna Manka, Glen Buick, Rob Menpes, Luke Gardiner, Cameron Jones, Khalid Amrouch

Australian Petroleum Production & Exploration Association (APPEA) Journal

...: Cooper–Eromanga Basin, depth errors, exploration, near surface geology, velocity modelling. Received 12 December 2017, accepted 13 February 2018...

2018

EXTENDED ABSTRACT: Applications of Wave Imaging Technologies to Improve Deep Gulf Prospecting

Morgan P. Brown, Joseph H. Higginbotham, Cosmin Macesanu, Oscar E. Ramirez

GCAGS Transactions

... velocity under complex refractors such as salt (Brown et al., 2009) and is robust to large errors in migration velocity and irregular acquisition...

2010

Stratigraphic Velocity Interpretation: National Petroleum Reserve--Alaska: Chapter 12

E. W. Peikert

AAPG Special Volumes

... of subsurface parameters. Estimates of Vint from individual velocity gathers are subject to errors caused by a number of factors such as: 1) random noise, 2...

1985

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