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The AAPG/Datapages Combined Publications Database

Showing 34,698 Results. Searched 200,357 documents.

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Delineation of Jonah field Using Seismic and Sonic Velocity Interpretations

Ronald C. Surdam, John Robinson, Zun Sheng Jiao, Nicholas K. Boyd III

Rocky Mountain Association of Geologists

... of a significant free gas phase in the fluid system (Surdam et al., 1994; Surdam, 1997a,b). In 1994, the regional velocity-depth gradient was removed from...

2001

Unlocking the Potential of Conventional Narrow Azimuth Data by Full-Waveform Inversion: a Deep Carbonate Imaging Case Study, Offshore Indonesia

Jun Wang, Yonghe Guo, Putri Supriandini, Bahrul Yusrie, Natalia Anggriani

Indonesian Petroleum Association

...* Bahrul Yusrie* Natalia Anggriani* ABSTRACT Full-waveform inversion (FWI) has evolved to be the contemporary solution to resolve velocity models in areas...

2021

Characterization of a Sediment Core from Potential Gas-hydrate-bearing Reservoirs in the Sagavanirktok, Prince Creek, and Schrader Bluff Formations of Alaska's North Slope: Part 5Acoustic Velocity Core Studies

R. F. Sigal, C. Rai, C. Sondergeld, B. Spears, W. J. Ebanks Jr., W. D. Zogg, N. Emery, G. McCardle, R. Schweizer, W. G. McLeod, J. Van Eerde

AAPG Special Volumes

... pressure for a selected group of sample depths for phase I recovered sand samples. 1 ft = 0.3 m; 100 psi = 0.7 MPa.FIGURE 6. Shear-wave velocity Vs1...

2009

Evaluation of possible gas microseepage mechanisms

Alton Brown

AAPG Bulletin

... it cannot account for observed microseepage. In contrast, continuous gas-phase flow through frac tures can equal or exceed reported microseepage velocity...

2000

Abstract: Full Waveform Inversion Algorithm using Time Imaging Methods; #90174 (2014)

Hassan Khaniani, John C. Bancroft, Gary F. Margrave, and Eric von Lunen

Search and Discovery.com

... phase and the dominant frequency changes from 5 Hz to 12 Hz depending on iterations. The starting velocity was obtained from the smoothed true model...

2014

Abstract: TTI Anisotropic Depth Migration: Which Tilt Estimate Should We Use?; #90211 (2015)

Francois Audebert and Volker Dirks

Search and Discovery.com

... the pole axis) and the Thomsen parameters ε and δ. The phase velocity as a function of the relative phase angle with respect to the pole axis can...

2015

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

E. W. Peikert

AAPG Special Volumes

...Stratigraphic Velocity Interpretation: National Petroleum Reserve--Alaska: Chapter 12 E. W. Peikert 1985 209 222 M 39: Seismic Stratigraphy II...

1985

Abstract: Prestack Depth Migration with the Gabor Transform; #90211 (2015)

Yongwang Ma and Gary Margrave

Search and Discovery.com

... with Gazdag (1978) phase shift method can only accommodate constant lateral velocity in any depth step, which is unrealistic for many practical...

2015

Development of offshore microtremor array exploration

Yoshikazu Matsubara, Mikihiro Imai, Akeshi Hiraide

International Meeting for Applied Geoscience and Energy (IMAGE)

... coordinate b) Difference between observed coherency and theoretical Bessel function. 800 Phase velocity (m/s) The position of the OBSS may deviate...

2022

Robust phase-driven time warping FWI for salt reconstruction

Guanghui Huang, Alejandro Alcudia-León, Jaime Ramos-Martínez, Nizar Chemingu

International Meeting for Applied Geoscience and Energy (IMAGE)

... for overcoming cycle-skipping, to conventional least-squares FWI aimed at refining the velocity field. Our new approach prioritizes phase alignment between...

2024

N/A

Abstract: Velocity Anisotropy from Core Measurements, VSP and Sonic Logs Analysis in a Single Well Study in NE Alberta; #90224 (2015)

Judith Chan and Douglas R. Schmitt

Search and Discovery.com

.... Geophysics 61(1):12-20. doi:10.1190/1.1443932. Kebaili A, Schmitt DR (1997) Ultrasonic anisotropic phase velocity determination with the Radon transformation...

2015

Representation of Bed Configurations in Depth-Velocity-Size Diagrams

John B. Southard

Journal of Sedimentary Research (SEPM)

... with these references lines. Features An important feature of the depth-velocity sections in Figures 2 and 3 is that they represent the various phase fields without...

1971

N/A

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)

... an accurate FWI velocity model during this model building phase, leading to an improvement in the pre-Messinian imaging. The background velocity...

2022

Numerical Solution to Design Velocity Strings to Unload Wet Gas Wells for Optimum Flow Rate and Recovery

Bernando Purba, Awaldi Fitrah

Indonesian Petroleum Association

...Numerical Solution to Design Velocity Strings to Unload Wet Gas Wells for Optimum Flow Rate and Recovery Bernando Purba, Awaldi Fitrah IPA13-SE-040...

2013

Critical Analysis of Stack Seismic Systems

L. E. Nugent, Jr.

AAPG Bulletin

... would occur from the same location and would have the same adjusted time if the velocity values were the same. Moreover, the phase shift...

1967

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