Complex Model Building using Objective Construction of Curve Ray Time Migration Moveout with Geologic Constraints, #41596 (2015).

Kerry Stinson, Shlomo Levy, Edward Crase, Wai-Kin Chan

Search and Discovery.com

... geologic interval velocity model is tested using prestack depth migration, and also as the initial model for subsequent prestack depth updating...

Reducing Uncertainties In Shear Wave Petrophysical Log Prediction By Using Deep Neural Network and Machine Learning Methods

Muhammad Faris Abdurrachman, Muhammad Dhafit Muhsin

Indonesian Petroleum Association

... line and Greenberg-Castagna’s Vp-Vs relationship. Castagna’s mud-rock line equation uses one variable, and linear trend applies only for brine...

Meramec Velocity Systematics

Jing Fu, Carl Sondergeld, Chandra Rai

Unconventional Resources Technology Conference (URTEC)

... the first equation, the Meramec velocity systematic shows good agreement with dipole wireline measurements even though there is a substantial...

A Time Migration Before Stack

Richard Cooper, Malcolm Hobson

Geological Society of Malaysia (GSM)

... a more accurate velocity field for migration and depth conversion. The robust nature of the method allows its application to routine data processing...

Finding the reservoir in an intensely scattered wavefield: A case study from the Central Sichuan Basin, China

John Coffin, Mengmeng Zhang, Panos Doulgeris, Peter Haffinger, Angie Kelsay, Jinsong Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... is to convert the offset gathers to ray parameter gathers using the interval velocity model from the PSTM seismic processing. The procedure is conceptually...

Prediction of Fracture Porosity from Well Log Data by Artificial Neural Network, Case Study: Carbonate Reservoir, DEPOKŽ Field

Okok Wijaya, Pebrian Tunggal P, Ahmat Dafit Hasim, Depta Mahardika, Sungkono, Bagus Jaya S

Indonesian Petroleum Association

... values of well log data reading must be normalized between 0 and 1 using the maximumminimum normalization given by the equation: Gamma ray log - Low...

Wave-equation based inversion for carbonate reservoir characterization in Kuwait

Rao Narhari, Ahmad Al-Sabari, Afrah Al-Ajmi, Justin Ugbo, Jeremy Harris, Gerard Soto, Panos Doulgeris

International Meeting for Applied Geoscience and Energy (IMAGE)

... for linear synthetics and Wave Equation based synthetics. Observe the amplitudes imbalance observed in the linear synthetics with respect...

Seismic Signature as a Porosity Indicator in Early Miocene Reefs in the Madura Strait Via AVO Inversion and Modelling

Bimal R. Banerjee

Indonesian Petroleum Association

... Variations with Offset : Examples from South Sumatra. Geophysics Vol. 54 - No.8. Faust, L. Y, 1951. Seismic velocity as a function of depth and geologic...

The Application of a Linear Increase of Velocity with Depth to Seismic Dip Migration

J. E. Stones

Oklahoma City Geological Society

...The Application of a Linear Increase of Velocity with Depth to Seismic Dip Migration J. E. Stones 1958 304 304 The purpose of this paper is two-fold...

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

... particularly associated with shallow velocity anomalies. This methodology allowed us to confidently position in depth the potential plays and leads...

The Application of Velocities and Models to Seismic Interpretation

G. Jarrota

Indonesian Petroleum Association

... the velocity within a group of common depth point ray paths assumes that all the ray paths of the group cross the same layers. This assumption fails for some...

Permeability and acoustic velocity controlling factors determined from x-ray tomography images of carbonate rocks

Nathaly L. Archilha, Roseane M. Missagia, Cathy Hollis, Marco A. R. de Ceia, Samuel A. McDonald, Irineu A. Lima Neto, David S. Eastwood, and Peter Lee

AAPG Bulletin

...Permeability and acoustic velocity controlling factors determined from x-ray tomography images of carbonate rocks Nathaly L. Archilha, Roseane M...

ABSTRACT: An Alternative Interpretation of Linear Dipping Events on 2-D Seismic Data from the Wichita Mountains Frontal Zone; #90020 (2003)

Jan M. Dodson, Roger A. Young, Kevin J. Smart

Search and Discovery.com

... combine with large velocity contrasts between Permian sediments and Precambrian basement to give rise to complex seismic ray paths. High-amplitude linear...

Uncertainty Analysis for Top Tuban Carbonate Prediction using Velocity Modeling Design in "Aquila" Field, East Java Basin

Ayu Indri Firdani, Azhar Kholiq Affandi, Erik Wahyu Irawan, Kamal, M. Wahdanadi Haidar, M. Freddy Yulisasongko

Indonesian Petroleum Association

... the uncertainty of the Tuban Carbonate depth marker due to high velocity anomalies from the results of the conversion using the linear trend velocities...

Xu and White Revisited (Paper C8)

M. Sams, T. J. Focht, N. Azuairi Che Sidik

Geological Society of Malaysia (GSM)

... is replaced by the Hill average of the component minerals. The aspect ratio at each depth is adjusted until the modelled velocity matches the measured...

Abstracts: Near-surface Velocity Model Building and Statics in Permafrost Regions; #90173 (2015)

Tianfei Zhu, Yan Yan, and Jon Downton

Search and Discovery.com

... in the tomography to determine the velocity of the nodes traversed by the ray path of this arrival. As a result, layers with a negative velocity gradient within...

Formation Evaluation Symposium, November 14-15, 1957

P. A. Ross

CSPG Bulletin

... the reliability of equation (1), it may be concluded that plots of the logarithms of neutron deflection versus porosity on a linear scale are straight lines over...

Traveltime tomography and efficient physics-informed Bayesian inversion

Tian Qiao, George Turkiyah, Gerard T. Schuster

International Meeting for Applied Geoscience and Energy (IMAGE)

... by the 1D traveltime modeling equation listed under Figure 1a, where we assume an Nlayered medium with each layer having a thickness of ∆z, no ray...

Abstract: Application of 2D Crosscorrelation and Radon Transform for Analysis of Double Couple Microseismic Source; #90187 (2014)

Neda Boroumand and Hassan Khaniani

Search and Discovery.com

... 0.1 0.2 Time (s) Time (s) 0.2 -200 0 200 Depth lag (m) a) b) c) d) Figure 2: a) A sample time snap of an elastic wavefield. b) Ray tracing simulation...

Abstract: Converted-wave Time Imaging … Nuts and Bolts; #90187 (2014)

Shaowu Wang, Thomas Hollis, and Wayne Nowry

Search and Discovery.com

... isotropic terms. The third terms are the high-order terms which correct the travel time error due to ray bending caused by varying vertical velocity...

Abstract: Multiple Reflections and Head Waves in Gulf of Suez, by S. N. Domenico; #90963 (1978).

Search and Discovery.com

Data selection for velocity model estimation using a circular shot OBN survey

Felipe T. Costa, Sergio L. E. F. da Silva, Ammir A. Karsou, Felipe Capuzzo, Roger M. Moreira, Jorge Lopez, Marco Cetale

International Meeting for Applied Geoscience and Energy (IMAGE)

... construction and eikonal equation in automatic pre-stack data selection can improve the velocity model estimation in full waveform inversion (FWI...

Assessing properties of internal multiples for different geologies

Paul Ras, Mikhail Davydenko, Eric Verschuur

International Meeting for Applied Geoscience and Energy (IMAGE)

..., we introduce three challenging 1D earth models in Figure 1. Model 1 is relatively simple and derived from a seismic velocity model for a major gas...

Geopressure Calculations in Real-time to Calibrate Operation Windows, #41931 (2016).

Carlos Martinez, Franklig Rodriguez, Edwin Hernandez, Edgar Gonzalez, Luis Corrales, Concepcion Isidro, Adrehny Leon

Search and Discovery.com

... of depth and geologic time: Geophysics, v. 16/2, p. 192-206. Faust. L.Y., 1953, A velocity function including lithologic variation:. Geophysics, v...

Three-Dimensional Trend Mapping Using Gamma-Ray Well Logs: Simpson Group, South-Central Kansas

J. H. Doveton , Zhu Ke-an , J. C. Davis

AAPG Bulletin

... 68 6. (June) Gamma-ray logs are useful indicators of shale content as a function of depth. When several gamma-ray logs are drawn from an area...