Fast Gauss-Newton full-wavefield migration

Siamak Abolhassani, Eric Verschuur

International Meeting for Applied Geoscience and Energy (IMAGE)

... to the limits of its capacity. Leastsquares wave-equation migration is one of those attempts that tries to fill the gap between the migration assumptions...

Addressing the complex near-surface challenges in the Delaware basin through recent FWI advancements

Ali Mohamed, Dmitry Kulakov, Daniel Suren, Wilfrid Milan, Larry Holifield, Vasudhaven Sudhakar

International Meeting for Applied Geoscience and Energy (IMAGE)

... display between observed and predicted wavefield without free surface multiples simulation, d) Interleaving display between observed and predicted...

ABSTRACT: Seismic Data Inversion Using Geologic Constraints, by Robert Vest; #91034 (2010)

Search and Discovery.com

Multiple Aliasing Problems in Marine Data

P. Chia, C. O. Kuek, P. Ward, K. S. Lee

Geological Society of Malaysia (GSM)

... of the aliased noise associated with multiples depends rather strongly on the velocity of the multiples. To illustrate this point, CDP gathers...

ABSTRACT: Model-Based Multiple Suppression: Application to Seismic Prospecting in Santa Barbara Channel, by Larry Morley and Paul Heuermann; #91035 (2010)

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Seismic Applications of the Velocity Log

W. G. Rimmer

CSPG Bulletin

... over 150 feet to 15,500 ft/sec has been added to the shale-limestone velocity pattern utilized in case A, Fig. 4. Comparisons between 3C and 4B...

Broadband Data from Flat Streamers: Considerations for Acquisition and Processing

Phil Fontona, Edward Hager

Indonesian Petroleum Association

... on the receiver-side ghost, and commonly used are co-located velocity and pressure sensors and dual-depth or variable depth hydrophones. All these methods...

Unlocking hidden potential in shallow water Gulf of Mexico legacy data for carbon capture and storage exploration

Rachel Collings, Igor Marino, Adriana Arroyo Acosta, Jack Kinkead, Hugo Medel, Trong Tang, Gabriela Suarez, Brett Sellers

International Meeting for Applied Geoscience and Energy (IMAGE)

... deployed a comprehensive wavelet processing workflow. To obtain a high-resolution velocity model, a seismic inversion workflow was implemented...

Characteristics of Microzonation Modelling in Reservoir Evaluation

Search and Discovery.com

A Case Study of Seismic Exploration in the Offshore Bonaparte Basin

J. Durrant, A. Young

Petroleum Exploration Society of Australia (PESA)

... the underlying objective section. Acquisition parameters were optimised to assist "velocity discrimination" processes. Long offsets, nearly 3.8 kilometres...

A case study using FWI to image pre-Messinian target in the East Mediterranean Sea

Jyoti Kumar, Marcus Bell, Tamer Darwish, Mai Ahmed, Mahmoud Ahmed, Moataz Ahmed

International Meeting for Applied Geoscience and Energy (IMAGE)

... presented, ranges anywhere between 2000 to 2400 m/s with a gentle gradient. Whereas the starting velocity increases to 3200 m/s to 4200 m/s in the presence...

Interferometry Application to Interpolate Missing 2D Seismic Data in Shot Gathers

Lily Suherlina, M.Yusup Nur Khakim, Hilman Mardiyan, Roy Baroes

Indonesian Petroleum Association

... and the multiple-only data (which are separated from the original data). The different data were employed to yield virtual primaries in the frequency domain...

III Columbia Oil & Gas Investment Conference: Conventional & Unconventional Hydrocarbon Resources - Abstracts

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... to attenuate multiple reflections in the image space (migrated domain) by exploiting the difference in residual moveout between primaries and multiples...

Towards understanding the impact of the evanescent elastodynamic mode coupling in Marchenko equation-based demultiple methods

Marcin Dukalski, Christian Reinicke, Kees Wapenaar

International Meeting for Applied Geoscience and Energy (IMAGE)

... functions) can be used to suppress multiples in a variety of ways (e.g. Dukalski and de Vos, 2022), without damaging primaries by e.g. adaptive subtraction...

Geophysical Techniques Used in Petroleum Exploration in the Ying Ge Hai Area, Zhanjiang, SW Guangdong Province, China

L. William Edwards

Circum Pacific Council Publications

... or rock interfaces for the drillers to use in planning deeper drilling. VSPs can also be used to distinguish multiples from primaries. This information...

A comparison of Marchenko multiples elimination schemes based on the beyond Neumann solution

Rodrigo S. Santos, Daniel E. Revelo, Reynam C. Pestana, Victor Koehne, Marcelo S. Souza, Diego F. Barrera, Laila D. L. Vergne

International Meeting for Applied Geoscience and Energy (IMAGE)

... that removing internal multiples before starting a velocity analysis helps to better define the choice of maximum values in the semblance map, to retrieve initial...

Arafura Sea Seismic Processing: Importance of Iterating Velocity Analysis and Integrating Regional Geology to Counter Signal Masking by Major Unconformities

Rahadian Adhyaksawan, Paulus T. Allo, Maria Raharja, Muhammad Isjmiradi, Mark Boyd

Indonesian Petroleum Association

... forcefully to remove the multiples. Step 2 Velocity picking: At first glance the velocity analysis semblance plots showed a very pickable velocity trend...

Prestack Depth Imaging Within the Makassar Straits, Eastern Kalimantan, Indonesia

Chris Willacy, Suryadi Oemar, A. Edy Hermantoro, Paul Gilleran

Indonesian Petroleum Association

... was used to attack the water bottom and supra-fold multiples which are strong throughout the region. Velocity model building and prestack depth migration...

A case study of broadband processing in extremely shallow water environment of Bohai Bay

Jiangbo Huang, Xinyi Duan, Dekui Xu, Pingping Zhang

International Meeting for Applied Geoscience and Energy (IMAGE)

.... For shallow water multiple suppression, conventional apparent velocity filtering methods cannot efficiently suppress shallow water multiples because...

ABSTRACT: Removal of Surface and Internal Multiples from Land Data: Experience from North Africa Data; #90051 (2006)

Riaz Alá'i, Eric Verschuur

Search and Discovery.com

... of noise suppression and multiple suppression. After conditioning and attenuating the pre-stack gathers from surface and internal multiples, the velocity...

Subsalt image optimization in the Gulf of Mexico combining sparse OBN and legacy streamer data

Hongyan Li, Ruoyu Gu, Jarrod Hutson, Di Chen

International Meeting for Applied Geoscience and Energy (IMAGE)

... developed to discriminate multiples from primaries, therefore, suppressing multiples on migrated images. Reverse time migration (RTM) can accurately migrate...

Chapter Nine: Inversion and Interpretation of Impedance Data

Rebecca B. Latimer

AAPG Special Volumes

.... 3–26. Luo, Y., P. G. Kelamis, and Y. Wang, 2003, Simultaneous inversion of multiples and primaries: Inversion versus subtraction: The Leading Edge...

Three-Dimensional Seismic Analysis in the Characterization of a Giant Carbonate Field, Onshore Abu Dhabi, United Arab Emirates

Peter Melville, Omar Al Jeelani, Saeed Al Menhali, Jürgen Grötsch

AAPG Special Volumes

... and interfering multiples. (C) The same 3-D cross-line from a priority-processed volume. The application of a near-surface velocity model has improved...

Compressive sensing framework using the linear radon transform for 3D ultrasonic data reconstruction in a pinch-out reservoir model

Pedro C. de Assis, Romulo B. da Silva, Irineu A. Lima Neto, Alan C. Galante, Alexandre L. Campi, Alessandro R. de Oliveira, Roseane M. Missagia, Marco A. R. Ceia

International Meeting for Applied Geoscience and Energy (IMAGE)

...ranging between ± 0.00025. However, since our survey geometry is end-on spread, we used a dip discrimination operator to zero the negative ray parameters...

Outlining Shale Masses By Geophysical Methods

A. W. Musgrave , W. G. Hicks

AAPG Special Volumes

... differences between shale masses and the surrounding normal sand-shale sequences. Four properties of the masses have been identified. 1. The velocity...