Clari-Fi’: Broadband Data from Conventional Streamer Acquisition

Nic Woodburn, Tom Travis, Hassan Masoomzadeh, TGS

GEO ExPro Magazine

..., transmission, mode conversion, etc. An important feature of broadening the spectrum in Step 1 is that more accurate measurements of the effective Q...

Constrained tomography for improved presalt elastic full-waveform inversion

Yaofeng He, Xu Li, Young Ho Cha, Partha Routh, Inma Dura-Gomez, Carey Marcinkovich

International Meeting for Applied Geoscience and Energy (IMAGE)

..., Carey Marcinkovich ExxonMobil Summary A relatively accurate initial velocity model is necessary in order for acoustic/elastic full waveform...

P-shooter--A Fast Seismic Source for Shallow Exploration: ABSTRACT

Gildas Omnes, Philippe Robert

AAPG Bulletin

... at 9,700 joules and an impact velocity of 30 ft/sec. By comparison, the same figures for a free fall drop would be only 5,400 joules and 23 ft/sec. The time...

ABSTRACT: A System for Ghost-Free Marine Seismic Acquisition, by Fromyr, Eivind; Pharez, Stephen; #90141 (2012)

Search and Discovery.com

Characterization of underground structures on Earth and on Mars using ambient seismic vibrations

Manuel Hobiger

International Meeting for Applied Geoscience and Energy (IMAGE)

... measurements and inverted in order to obtained the shear-wave velocity profile of the underground structure. Applications of these techniques for a site...

Compensating for Seismic Absorption for Orthogonal Shooting Field Data: A Case Study on NW Tunu Area, Indonesia

Doddy Iqbal Biramandita, Vishal Kumar, Wayne Zanussi, Jacques Bonnafe, Natalia Anggriani, Cepi M. Adam, Didiek Bhudy Prabowo

Indonesian Petroleum Association

... caused by the absorption. The process involves detailed velocity modeling and fine grid Q-model with resultant computationally intensive processing...

Frequency-dependent reflection characteristics of single thin layer and waveform inversion

Zhengyang Kuai, Danping Cao, Chao Jin

International Meeting for Applied Geoscience and Energy (IMAGE)

... information than the seismic waveform time-domain spectrum based on Zeoppritz equation. Figure 5 shows the inversion results of P-wave velocity, Swave...

Surface Source Technology

Stan D. Brasel

Pacific Section of AAPG

... of high velocity noise waves, which usually mask the reflection spectrum in the upper 1.5 seconds of the record. The original technique used 180 total...

Confirming Reservoir Geometry and Exploration Opportunity through 5D Interpolation PSDM in The Sub-ophiolite Zone, Banggai Sula Basin, Central Sulawesi

Mufied Ahmad, Dadang Ramdan, Yudi Herdiana, Abdullah Nurhasan, Arif Budi Mulyawan

Indonesian Petroleum Association

... well as data control, plus complex structure and the proximity to the Batui thrust, the velocity has not been modeled correctly. To reduce...

Wave Modeling and Hydrodynamics

J. Ian Collins

Special Publications of SEPM

... definition of the directional energy density spectrum and its modification by wind bottom topography waves bottom friction and nonlinear interactions...

Q tomography workflow: Land case study in the Eagle Ford Play

Itai Sharabi, Matan Shustak, Orly Kletenik-Edelman, Ronit Levy, Zvi Koren

International Meeting for Applied Geoscience and Energy (IMAGE)

... the effects of frequency-dependent amplitude attenuation and phase-velocity dispersion of seismic waves is essential for obtaining reliable image...

Retrieving Amplitude Absorption From Gas Cloud Effect In Deep Water Play, Gulf Of Mottama, Offshore Myanmar

Search and Discovery.com

Abstract: Two Issues about the Application of VP/VS: Quality Improvement and Error Analysis; #90211 (2015)

Duojun Zhang and Larry Lines

Search and Discovery.com

... spectrum of PS seismic volume, which has a narrower frequency band and lower dominant frequency, and applied the band pass filter to PP seismic volume...

Effects on the precision of tomography near-surface model with single receiver

Baohua Yu, Yongguo Wu, Haili Wang, Faquan Feng, Quanbin Yang, Lixin Ma

International Meeting for Applied Geoscience and Energy (IMAGE)

... of the energy cluster of velocity spectrum are without distinction; in terms of the refracted wave, the improvements of linear convergence in the F-K...

Full-waveform inversion and FWI imaging for land data

James Sheng, Cristina Reta-Tang, Faqi Liu, Alfredo Vzquez Cant, Alejandro Cabrales Vargas

International Meeting for Applied Geoscience and Energy (IMAGE)

..., Pemex Summary Velocity model building and imaging for land surveys are particularly challenging due to the complexities of the near surface model...

Image processing of jointly acquired 3D DAS-VSP data with an OBN survey in the Middle East

G. Yu, H. Liu, Y. Zhang, H. Chen, X. Li, L. Duan, G. Cambois, J. Cowell, J. Mason, Y. Chen, J. Wu

International Meeting for Applied Geoscience and Energy (IMAGE)

... procedure, joint domain full waveform inversion (JDFWI) for velocity model update, and one way wave equation multiple migration (OWEMM) method were...

Abstract: Comparative Study on 2D Microseismic Source Location with Synthetic Seismograms Recorded by Borehole- and Surfacereceiver Arrays; #90224 (2015)

Anton Biryukov, Simon G.E. Harvey, and Giovanni Grasselli

Search and Discovery.com

... in time to get the initial acoustic event location. The influence of a span between the receivers, influence of the velocity model and relative source...

Broadband Data from Flat Streamers: Considerations for Acquisition and Processing

Phil Fontona, Edward Hager

Indonesian Petroleum Association

... extending the low-frequency end of the spectrum without limiting the high-frequencies beyond the natural Earth response. These techniques focus...

Measuring Behind Casing Water Flow

T. M. Williams

Indonesian Petroleum Association

... to measure vertical water flow in or behind multiple casings. This logging system can measure: • the direction of flow • the linear flow velocity...

Enhance Seismic Quality With A Fast, Robust and Economic Solution Using Broadband Technology

Munji Syarif, Vania Iqsora, Adde Avrino, Agus Abdullah

Indonesian Petroleum Association

... data can be done. Inverse Kirchhoff migration using constant velocity model or final velocity from processing is used prior to spectrum extraction...

Different Approaches of Combining Geophone and Hydrophone Data From OBC Seismic at Bintuni-Berau Bay, Papua

Tepy Septyana, Yayat Supriatna, Supriyono, Greg Schurter, James Keggin, Jean-Jacques Chameau

Indonesian Petroleum Association

... measures the particle velocity and hydrophone measures pressure variation. Both parameters are varying in phase. However, as instruments, the sensors...

Application of least squares one-way wave migration in irregular sampling data of Bohai Bay Basin

Lv Yongchang, Li Daoshan, Wang Yongming, Meng Jie, Feng Xukui, Hu Dan, Wu Xiaofeng, Kong Zhaoju

International Meeting for Applied Geoscience and Energy (IMAGE)

... inversion theory. In the least squares migration algorithm, the migration velocity model (background velocity) will not be updated with the iteration...

Abstract: Separation of Geometric Spreading, Scattering and Intrinsic Attenuation in VSP data; #90187 (2014)

Amin Baharvand Ahmadi and Igor Morozov

Search and Discovery.com

... increases with frequency, which is related to the relatively slow roll-off of the spectrum of P-wave velocity (Figure 2, right). Figure 3 shows...

AVO Modeling of Monochromatic Spherical Waves: Comparison to Band-Limited Waves; #41567 (2015)

Charles Ursenbach, Arnim Haase

Search and Discovery.com

... path in the complex plane, S0 ≡α / (Dω0), α is the P-wave velocity of the overburden, D is the length of the raypath from source to receiver, ω0...

Abstract: Investigating the Low Frequency Content of Seismic Data with Impedance Inversion; #90187 (2014)

Heather J. E. Lloyd and Gary F. Margrave

Search and Discovery.com

...-frequency well-log information to the seismic data spectrum is marked by a cut-off frequency, . The choice of depends on the low-frequency content...