Revealing the discontinuities by 3D prestack diffraction separation and imaging

Chuangjian Li, Suping Peng, Xiaoqin Cui, Peng Lin

International Meeting for Applied Geoscience and Energy (IMAGE)

... superresolution: Geophysics, 69, 1478–1490, doi: https://doi.org/10.1190/1.1836821. Levin, F. K., 1971, Apparent velocity from dipping interface reflections...

The Application of Velocities and Models to Seismic Interpretation

G. Jarrota

Indonesian Petroleum Association

... velocities were assumed on this part of the line. Velocity horizon f is much more complicated. The apparent velocity goes from less than 3 to more than 5 km...

A Report on the Renaissance of Gravity in the Deep Water Gulf of Mexico: A Practical View of Integration Methods

Brian S. Anderson, Mark E. Weber, John E. Bain

Houston Geological Society

..., the density-velocity function is used to translate the alterations into an apparent velocity cube. Figure 6 is the final result of this process. Note...

Joint designature of data with a diversity of sources

Shuki Ronen, Thibaut Allemand, Stphane Laroche, Philippe Herrmann, Hamish Macintyre, Maksym Kryvohuz, Guido Baetan

International Meeting for Applied Geoscience and Energy (IMAGE)

...ure on refractions with an apparent velocity of 5300ms -1. As expected from the diagnosis in Figure 5, for a given choice of  high frequency no...

Challenges to Processing, Interpretation and Depth Conversion Posed by Dynamic Statics Over the Ujung-Pangkah Field

Donald Easley, Ferry Yustiana

Indonesian Petroleum Association

...) As can be seen from the data in (Figure-3) the first later up to around 15-22m in depth has a very low apparent velocity. This velocity of around...

Codes and Ciphers Simultaneous: Source Separation: PART II

Johan O. A. Robertsson, Dirk-Jan Van Manen, Lasse Amundsen, Martin Landrø

GEO ExPro Magazine

... shooting. Abma et al. (f k) diagrams to examine the direction and apparent velocity 2πf/k of seismic waves. Here (2015) suggested using a library...

Application of 3D converted wave processing technology in imaging of gas cloud area

Mingxing Xue, Zhijun Zhang, Jinhui Zhang, Zhen Ma

International Meeting for Applied Geoscience and Energy (IMAGE)

.... The upgoing wave of the converted wave is a shear wave, with a lower apparent velocity, and is more affected by anisotropy than the P wave. Therefore...

Structure of the Gudauta Bank According to Reconnaissance Seismic Investigations

Yu. P. Neprochnov, V. N. Moskalenko

Petroleum Geology: A Digest of Russian Literature

... of 1.5-5.0 km from the shot point in the first arrivals is registered a refracted wave P1 with an apparent velocity V* = 2.3-2.4 kmps...

Advanced Approach Toward Understanding Geologically Complex Area Using MDRS (Multi-Dip CRS): A Case Study

Naoshi Aoki, Shogo Narahara, Akihisa Takahashi, Tsukasa Nishiki

Indonesian Petroleum Association

... zero-offset point so that conflicting dips can be described. MDRS also provides objectively-analyzed velocity information, which can be a useful...

The Effect of Velocity Uncertainty and Attenuation on Flow Estimates From Microseismicity

Oleg V. Poliannikov, Michael Fehler, Alison Malcolm

Unconventional Resources Technology Conference (URTEC)

... frequencies are attenuated, the apparent velocity becomes lower; alternatively, arrivals are systematically picked later than they would be in the absence...

Using Depletion-Zone Microseismicity to Understand Producing Volumes

Jonathan P. McKenna, Michael H. Grealy, Michael S. Blaz, Nathan M. Toohey

Unconventional Resources Technology Conference (URTEC)

... population contains events with apparent velocities up to 50 times faster than the average velocity from the fluid-induced event population. We...

Seismological Discovery and Partial Detail of Vermilion Bay Salt Dome, Louisiana

E. E. Rosaire , O. C. Lester, Jr.

AAPG Bulletin

... characteristic of a shallow salt dome. The most essential feature is the more or less sudden decrease in apparent velocity shortly after Fig. 4...

Refraction Shooting with Expendable Sonobuoys: GEOLOGICAL NOTES

J. Ewing , R. Leyden , M. Ewing

AAPG Bulletin

... in records 93 and 94 curve slightly, indicating they may be wide-angle reflections. Arrivals with high apparent velocity near end of profile 96 also...

Repeatability Evaluation of Time-Lapse Technology Using Ultra-Stable Seismic Source; #42078 (2017)

Junzo Kasahara, Khaled Al Damegh, Ghunaim Al-Anezi, Yoko Hasada, Kei Murase, Aya Kamimura, Osamu Fujimoto, Hiroshi Ohnuma

Search and Discovery.com

... m. This is thought to be caused by the presence of velocity inversion just below the top layer. We calculated NRMSs of the first arrivals...

THE RENAISSANCE OF GRAVITY

Search and Discovery.com

Geometric mode decomposition method for diffraction separation

Peng Lin, Suping Peng, Yang Xiang, Chuangjian Li, Xiaoqin Cui

International Meeting for Applied Geoscience and Energy (IMAGE)

... with the apparent velocity or the slope of the reflection events. Unlike the reflections, the diffraction events with weak energy are distributed over...

Subsurface monitoring during tunnel excavation area using auto-correlation

Enhedelihai Nilot, Gang Fang, Yun Zhou Tan, Yanlong Niu, Heng Zhang, Yunyue Elita Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... at the infinite apparent velocity. The resulting cross-correlograms do not contain any information about the subsurface. Figure 3: The spectrogram of Z...

Evaluating HD weathering surveys and surface seismic with DAS in a sand dune environment

Andrey Bakulin, Ezzedeen Alfataierge, Roman Pevzner

International Meeting for Applied Geoscience and Energy (IMAGE)

... Association of Petroleum Geologists Saudi Aramco: Public with a low apparent velocity that mask weak reflections (Bakulin et al., 2020b, 2021). segments...

Microseismic imaging with three-component borehole sensors

Jakob B. U. Haldorsen

International Meeting for Applied Geoscience and Energy (IMAGE)

... signal propagating at an apparent velocity, and stacking the aligned signal. If the wavefield recorded by sensor m located at xm is a Pwave propagating from...

Joint OBN and 3D DAS-VSP data acquisition and processing in East China Sea

G. Yu, G. M. He, Z. L. Cao, H. B. Liu, J. J. Li, Y. Z. Chen, J. J. Wu, J. G. Li, X. M. Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... and the casing wall, the cable ringing noise is strong. From Figure 3(a), it can be seen that the apparent velocity of ringing noise is close...

DMO and NMO as Applied in Seismic Data Processing

Jiunnyih Chen

Geological Society of Malaysia (GSM)

.... Levin, F.K, 1971. Apparent velocity from dipping interface reflection. Geophysics, 36, 510-516. Ottolini, R. and Claerbout, J.F., 1984. The migration...

Detection of shallow sedimentary structure of Yigong Lake in Tibetan Plateau using distributed acoustic sensing

Jian Zhou, Jizhong Yang, Heng Zhang

International Meeting for Applied Geoscience and Energy (IMAGE)

...) and channel 201 (bottom). The red dashed lines show the apparent velocity. Dispersion curve extraction and inversion Figure 7. (Top) Waveform, (bottom...

What Are You Interpreting? Your Seismic Image Could Be Misleading You!

R. T. Newrick, E. P. Gomez, J. K. Pullishy, S. D. Jensen, J. M. de Armas

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... structure is obtained when the processing velocities are 5% greater than the final velocities. It is apparent that the velocity model used will affect...

Exact kinematic behavior of the P-SV converted wave in a vertical transversely isotropic medium

Guillaume Cambois

International Meeting for Applied Geoscience and Energy (IMAGE)

... an improved approximation at near angles. At wide angles, the horizontal converted wave apparent velocity matches the P horizontal velocity. Since...

Marchenko-based internal multiple attenuation feasibility analysis for a thin-layered media in ultra-shallow water OBN from offshore Middle East

Frederico Xavier de Melo, Suyang Chen, Luis Salinas, Shotaro Nakayama, Nozomi Yamamoto

International Meeting for Applied Geoscience and Energy (IMAGE)

... generating the internal multiples, they can be grouped by their apparent velocity ranging from slower to faster trends when compared to underlying...