Least-squares migration utilizing high-resolution point spread functions generated from local angle domain illumination vectors

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

International Meeting for Applied Geoscience and Energy (IMAGE)

... by seismic migrations applied in complex geological areas with restricted acquisition coverage and frequency band, are normally blurred, containing...

Hydraulic fracture characterization by integrating multidisciplinary data from the Hydraulic Fracturing Test Site 2 (HFTS-2)

Zhishuai Zhang, James DiSiena, Dimitri Bevc, Ivan Lim Chen Ning, Yunhui Tan, Laura Swafford, Mike Craven, Kelly Hughes, Andrea Vissotski

Unconventional Resources Technology Conference (URTEC)

.... In addition to seismic monitoring, Jin and Roy (2017) showed that the low-frequency content of DAS signal provides information on the strain or strain rate...

Improved Resolution of Thin Turbiditic Sands in Offshore Sabah with Bandwidth Extension … A Pilot Study (Paper C11)

G. Yu, N. Shah, M. Robinson, N. H. Nghi, A. A. Nurhono, G. S. Thu

Geological Society of Malaysia (GSM)

... by the wells varies, from centimeters to tens (10s) of metres. The conventional 3D seismic data doesn’t have the appropriate frequency content...

Use of Grain-Size Frequency Data to Interpret the Depositional Environment of the Pliocene Pleshet Formation, Beer Sheva, Israel

Ron Goldbery

Journal of Sedimentary Research (SEPM)

...Use of Grain-Size Frequency Data to Interpret the Depositional Environment of the Pliocene Pleshet Formation, Beer Sheva, Israel Ron Goldbery 1980...

An Improved Method for Calculating the Standard Deviation and Variance of Paleocurrent Data: RESEARCH METHOD PAPER

Robert G. F. Krause , Theresa A. M. Geijer

Journal of Sedimentary Research (SEPM)

... for the statistical treatment of sedimentary paleocurrent data. Because paleocurrent data are circular frequency distributions, Batschelet's method...

Multifrequency Acoustic Profiling for Water Reservoir Sedimentation Studies

John A. Dunbar , Peter M. Allen , Paul D. Higley

Journal of Sedimentary Research (SEPM)

... sampling of local flood frequency and severity, are required for planning purposes. Since the 1930s it has been standard practice to estimate reservoir...

High Resolution Pore Pressure Prediction Using AVO Inversion

Yongyi Li

Search and Discovery.com

... to estimate pore pressure. This is problematic because these velocities have low frequency and thus low resolution. As a result, the predicted pore pressure...

High Resolution Pore Pressure Prediction Using AVO Inversion

Yongyi Li

Search and Discovery.com

... to estimate pore pressure. This is problematic because these velocities have low frequency and thus low resolution. As a result, the predicted pore pressure...

Dielectric Permittivity of Evaporite Minerals

Search and Discovery.com

... and natural evaporite minerals using a coaxial sensor method in the frequency that range between 10MHz and 3GHz. The synthetic evaporate samples were fabricated...

Amplitude Mapping of Reservoirs in North Africa

Search and Discovery.com

.... The phase spectra display is particularly useful in determining the useable frequency spectrum of the seismic data, because the valid data will exhibit...

Abstract: Noise and its Effect on Microseismic Event Locations; #90174 (2014)

Neda Boroumand and Henry Bland

Search and Discovery.com

... organized in its behavior, can be reduced by applying frequency-specific filters. To study the effects of noise on microseismic event locations, a dataset...

Abstract: Strong Noise … Removal and Replacement on Seismic Data; #90174 (2014)

Patrick Butler

Search and Discovery.com

... will produce a high frequency rattle in time as is shown in Figure 2. Notice that the THOR replacement spectrum is much closer to that of the stack than...

Abstract: White Noise Suppression in the Time Domain … Part I; #90174 (2014)

Patrick Butler

Search and Discovery.com

... a considerable advantage in processing the low amplitudes at the top end of the wavelet's spectrum. It will be shown, with the aid of cross correlations...

Abstract: A Seismic Workstation Solution to Bakken AVO; #90174 (2014)

D. Meisinger and N. H. Kalmanovitch

Search and Discovery.com

... be 12m thick requiring useable frequency of 100 Hz within the trace gathers and this is not typically present on most of this existing seismic data. (12m...

Abstract: Seismic Source Wavelet Estimation and Sparse-spike Deconvolution; #90174 (2014)

Zhengsheng Yao and Mike Galbraith

Search and Discovery.com

... present an algorithm for seismic source wavelet estimation that is based on seismic time frequency spectral decomposition with matching pursuit...

Resolving Thin Beds and Geologic Features by Spectral Inversion, by Satinder Chopra, John P. Castagna, and Yong Xu, #40326 (2008)

Search and Discovery.com

Horizontal Wave Testing, by Bob Hardage, #40502 (2010).

Search and Discovery.com

Eliminating the Influence of Caprock Thickness on Anomaly Intensities in Geochemical Surface Survey in the South Slope of the Dongying Depression in East China; #41304 (2014)

Liuping Zhang, Zhenli Wang, and Yingquan Zhao

Search and Discovery.com

... thickness variation from data of geochemical surface survey. Variation of caprock thickness provides low frequency information in geochemical data...

Design of the Acoustic Zoom Method for Non-Specular Backscatter Imaging of the Eagle Ford Formation, #41495 (2014).

J. Guigne, S. Azad, C. Clements, A. Gogacz, W. Hunt, A. Pant, J. Stacey

Search and Discovery.com

... power levels below -15 dB. -45 30 50 70 90 110 130 150 170 Frequency (Hz) Figure 7: A shot gather and the power spectrum of the signal contained...

Improved Estimation of Water Saturation in a Lower-Paleozoic European Organic-Rich Shale Gas Formation, #42154 (2017).

Yifu Han, Siddharth Misra

Search and Discovery.com

.... Subsurface electromagnetic (EM) measurements, namely galvanic resistivity, EM induction, EM propagation, and dielectric dispersion, exhibit frequency...

Broadband Seismic Technology and Beyond: Part IX: BroadSeis in Production

Lasse Amundsen, Martin Landrø, Vetle Vinje, Jo Firth

GEO ExPro Magazine

... better deeper images. However, in many respects it is the low frequency end of the spectrum which is more important as these frequencies provide more...

Marine Vibrators: Part II: PGS's Technology Developments

Martin Landrø, Lasse Amundsen, Rune Tenghamn

GEO ExPro Magazine

... PGS PGS Two years after Petroleum GeoServices (PGS) was founded Improving Low Frequency Response in 1991, the company started to look...

The Morphostructures of Kinta Valley Karst

Ros Fatihah Muhammad, Tjia Hong Djin

Geological Society of Malaysia (GSM)

... lineaments are also plotted in rose diagrams by frequency as well as length (in kilometers). The diagrams are plotted from lineaments of limestone...

Hearing Conservation Program at CPI

Darmansjah Nuch, Kamaluddin Bakar, Jusuf Bakri

Indonesian Petroleum Association

.... There is bilateral (involving both ears) sensory neural hearing loss at high frequency (more than 3000 Hz). Audiometric testing shows V dip (Audiogram...

Combined AVO and Spectral Decomposition Analyses to Characterize Gas Sand Reservoir Below Tuning Thickness Condition

Julian Saputro, Jaenudin, Alexis Badai Samudra, Enik Puji Lestari, Sugiono, Aldis Ramadhan, Yosi Hirosiadi

Indonesian Petroleum Association

... I) with lateral reservoir distribution is described by spectral decomposition analysis (15 Hz frequency slice). INTRODUCTION AVO techniques had been...