Research and application of near surface modeling in dual complex exploration areas

Xinyue Song, Duojun Zhang, Zaijin Zhang, Yi Bao, Cheng Wang, Zhonghua Zhao

International Meeting for Applied Geoscience and Energy (IMAGE)

... complex surface structures with drastic spatial variations in velocity. This paper proposes a near surface modeling method based on surface wave...

Joint VTI and Mud Slowness Inversion Using Multiple Modes and Adaptive Weighting

Mark Collins

Unconventional Resources Technology Conference (URTEC)

... isotropy (VTI) (i.e., anisotropy with a vertical axis of symmetry). In such a case, a shear wave polarized in the horizontal plane has a different speed than...

Poisson binomial-based random undersampling scheme for near-surface compressive sensing

Sayan Mukherjee, Yunyue Elita

International Meeting for Applied Geoscience and Energy (IMAGE)

... surface, which indicates that the short-wavelength surface waves attenuate quickly with increasing receiver spread and the longwavelength surface waves...

First-Arrival Traveltime Inversion in the CMP Domain: Method and Application

Search and Discovery.com

.... These differences are caused by the statics values computed based on the different near-surface velocity models that were generated by the two different algorithms...

Seismic Activity in the Central Gulf Coast Basin

Eugene R. Brumbaugh

New Orleans Geological Society

... onshore is so much more usable than the old 6 fold data. The effect geophone group spacing has on acquiring higher frequencies has already been...

Abstract: Estimation of Q-factor and Phase Velocity Using the Recovered Stress-strain Relaxation Spectrum; #90172 (2014)

Dali Zhang, Michael P. Lamoureux, Gary F. Margrave

Search and Discovery.com

... that the complex velocity V () or complex modulus M ( ) can be measured at sample data point of frequencies  k (k  1,2,, N ) where N is the total number...

A Method for Reducing the Effects of Base Plate Distortion

S. A. Sorkin

Pacific Section of AAPG

... of base plate distortion can be serious, especially when using a down sweep. Any harmonic frequencies present in the signal being cross-correlated...

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

... using a different, time- and space-invariant velocity function (called constant velocity migration, or CVM). A migration velocity model that varied...

Acquisition and Ananlysis of Wide-Angle Reflection and Refraction Seismic Data

Paul L. Stoffa

Circum Pacific Council Publications

...), we sum the traveltime contributions from each layer. T-p Traveltimes v + q Considering a stack of horizontal constant velocity layers of thickness...

Localized wavefield inversion (LWI): An adaptation of multi-block ADMM for localized FWI

Hossein S. Aghamiry, Ali Gholami, Stephane Operto, Alison Malcolm

International Meeting for Applied Geoscience and Energy (IMAGE)

... intensive imaging technique to reconstruct unknown parameters in the computational model in which the waves propagate; however, an accurate model...

Sorting of Sediments in the Light of Fluid Mechanics

Douglas L. Inman

Journal of Sedimentary Research (SEPM)

... by the average velocity u, the velocity at any instant, u, is the vector sum of the average velocity and a random fluctuation related to turbulence. This may...

Theory and Applications of Time Series Analysis to Wireline Logs: Chapter 5

John H. Doveton

AAPG Special Volumes

... Research Group, 1990). End_Page 111------------------------ constraints within ancient sequences are a common problem. Consequently, a different...

Weathervaning Characteristics of Tankers Connected to Single Point Moorings

A. T. Brumley, A. E. Potts

Southeast Asia Petroleum Exploration Society (SEAPEX)

... by finding the vector sum of the current velocities to find the total velocity incidence direction and then finding the coefficient for the vector...

Sediment Dispersal Pattern Off an Eroding Delta on the West Coast of Taiwan

James T. Liu, Ray T. Hsu, Jeong-Shang Huang, Shenn-Yu Chao

Special Publications of SEPM

... patterns suggest that different grain sizes have different responses to various hydrodynamic processes on the shoreface, and therefore, they can...

Amplitude Recovery of Digitally Recorded Data

Roy O. Lindseth

Pacific Section of AAPG

... is directly related to changes in lithology, characterized by velocity and density variations. Properly recovered amplitude data can be mapped...

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

L. William Edwards

Circum Pacific Council Publications

... of instantaneous phase method for line 278A-33. Figures 25 to 27 show three different versions of the color interval velocity for lines 278-33...

Abstract: Model Parametrization Strategies for Newton-Based Acoustic Full Waveform Inversion; #90224 (2015)

Amsalu Y. Anagaw

Search and Discovery.com

... frequencies were selected between 3.1 Hz and 21 Hz. Figures 4 depict the reconstructed velocity models using GN and FN methods from noisy data set with SNR...

A ground roll attenuation method based on CAResU-net with adaptively frequency-induced loss

Siyu Sun, Guosong Tang, Wei Bao, Guofa Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... Ground roll, a common coherent noise in field seismic data, exhibits distinct characteristics, including low frequency, low velocity, and high amplitude...

Optimized downward continuation for the one-way wave equation in TTI media

Cosmin Macesanu, Faqi Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

..., and its purpose is to correct the phase for waves propagating vertically. (Here vz is the vertical phase velocity, which is different than v p...

Delineating Thin-Bed Tight Gas Sand Reservoir with Prestack Joint PP/PS Inversion, #41363 (2014)

Zhiwen Deng, Ming Qiang, Shuanghu Shi, Xiaofeng Liang, Yang Zhu, Yijun Zhou, Qingjia Tong

Search and Discovery.com

.... Conventional 3C velocity and image are generally computed in different time scales; PP wave is processed with PP time scale and PS wave with PS time scale. PP...

Seismic signal considerations for fast reservoir characterization

Folkert Hindriks

International Meeting for Applied Geoscience and Energy (IMAGE)

...(s). In Figure 4, this wavelet dependency is shown for wavelets with different low and high-cut frequencies. We observe that wavelets with narrow...

The Combined Effects of Wave Motion and Tidal Currents on the Morphology of Intertidal Ripple Marks: The Wash, U.K.

C. L. Amos , M. B. Collins

Journal of Sedimentary Research (SEPM)

...) swell waves originating from outside the immediate area. This classification was made on the basis of wave morphology (Table 1), the former group...

Enhanced depth imaging for subsurface faults, fracture and karst: Application in Malaysian carbonate field

Yasir Bashir, Deva Prasad Ghosh, Seyed Yaser Moussavi Alashloo, Amir Babasafari, Chow Weng Sum

Geological Society of Malaysia (GSM)

... Yaser Moussavi Alashloo, Amir Babasafari, Chow Weng Sum PERTEMUAN PERSATUAN (Meetings of the Society) S2-37 Enhanced depth imaging for subsurface...

Identification of Fluid Movement in the Formation and Behind Casing Through the Use of Thermal and Acoustic Energy from Production Logs

Jose González, Alejandro Linares, Jairo Pérez, Alexander Castro, Virginia Mayorga, Danelys Bernal Correa, Juan Marin, Mario Ardila Moreno, Diego Rodriguez, Jose Vasquez

Unconventional Resources Technology Conference (URTEC)

... in waves. The methodology involves acquiring spectral noise logs (both in low and high frequency), fiber optic logs (including DTS - distributed...

How to Reconcile Security and Safety Issues with Seismic Quality in Obstructed and Populated Areas: Case Study Handil 3D Seismic

Aa Pian Nopiana, Michel Erbetta, Alain Etchemendy, Christophe Paulet, John Conant, Stephan Ruhlmann, Alain Carnemolla, Ganda M. Simangunsong

Indonesian Petroleum Association

... longitudinal, vertical and transversal velocity. The graph as depicted in Figure 4 is analyzed to find peak vector sum (PVS). At the same period of time...