Resolving DAS versus geophone discrepancies using the DAS transform: A comparative study from the CaMI CCS field research station, Alberta

Ali Sayed, Robert R. Stewart, Marie Macquet, Don Lawton

International Meeting for Applied Geoscience and Energy (IMAGE)

... vertical seismic profile (VSP) data and holds great promise as a monitoring tool in carbon capture and storage (CCS) project. However, mismatches between...

Shallow VSP for Near-Surface Structure and Statics, #41535 (2015).

Soo-Kyung Miong, Robert R. Stewart, Joe Wong

Search and Discovery.com

... vertical seismic profiling (VSP) data can serve as a near-surface characterization tool-providing velocity values for static corrections and reflection...

Depth Prediction Ahead of the Bit: A Case Study from the Singa-1 Discovery Well, South Sumatra

Mark Crawley, David Ginger

Indonesian Petroleum Association

... in the recorded wavefield can then be processed in the same way as a standard VSP. Whilst drilling, velocity information was provided in time-depth pairs...

Anisotropy analysis from 3D VSP surveys acquired at Otway site

Sofya Popik, Andrej Bona, Roman Pevzner

Petroleum Exploration Society of Australia (PESA)

... as a source. Seismic image significantly depends on the quality of velocity model used for imaging. In cases when anisotropy is present, its effect cannot...

Chapter Ten-part 2: Depth Conversion

Leslie R. Denham, Dave K. Agarwal

AAPG Special Volumes

... reflection is recorded from a horizontal reflector, and the earth above the reflector (the overburden) has a uniform P-wave velocity V, the traveltime...

Seismic Technologies for Unconventional Reservoir Characterization: Wamsutter Field Case Study; #110159 (2011)

Rosemarie Geetan, Brian Hornby, Ricko Wardhana

Search and Discovery.com

... quality & velocity control • >90% pre-plot shots acquired over 6 days 13 Well to seismic ties- VSP and surface seismic Velocity Density GR Acoustic...

Imaging of multiwell and multifiber walkaway DAS-VSP datasets in a CCUS demonstration project onshore Japan

Yuji Yamada, Shotaro Nakayama, Takuji Mouri, Manish Lal Khaitan, Philip Armstrong, Olga Podgornova

International Meeting for Applied Geoscience and Energy (IMAGE)

... both the simple 1D VTI model and a surface seismic velocity model calibrated with DAS-VSP datasets that also made use of the VTI parameters inverted...

Improving Depth Prediction Accuracy of Quantified Drilling Hazards

W. Scott Leaney, William H. Borland

Geological Society of Malaysia (GSM)

.... Drillers want predictions in depth, however, and the output of VSP inversion is acoustic impedance in two-way time. Thus, a velocity profile must...

Time-Lapse WAW VSP Imaging of an Unconventional Reservoir Using DAS Fiber Optics

J. Andres Chavarria, Dan Kahn, David Langton, Steve Cole, Xinyang Li

Unconventional Resources Technology Conference (URTEC)

... due to hydraulic fracturing of the rocks change the character of seismic waves. Repeatable DAS VSP measurements within the stimulated zone can reveal...

A new system for efficiently acquiring vertical seismic profile surveys

Tim Dean, Nghia Nguyen, Brenton Armitage, Huw Rossiter

Petroleum Exploration Society of Australia (PESA)

... is the interval velocity (the velocity of that layer encompassed by the two positions). As well as velocity information, VSP data can also be processed further...

Validation of Fracture Height and Density from Rapid Time-Lapse DAS VSP for use in Calculating Stimulated Rock Volume: A Case Study from Hereford Field, Colorado

T. L. Inks, X. Zhao, M. E. Willis, E. Jenner, B. Burke

Unconventional Resources Technology Conference (URTEC)

... referred to as rapid timelapse DAS VSP) data, transformed to an anisotropic seismic velocity model via rock physics relationships, were used to estimate...

ABSTRACT: Shear-Wave Splitting and Dispersion Analysis Using a Walkaround VSP for Fracture Characterization in Saudi Arabia: A Case Study, by Planchart, Carlos; #90141 (2012)

Search and Discovery.com

Velocity Anomalies and Out-of-Plane Reflections in Barnicarndy 1, Canning Basin

Y. Zhan

Australian Petroleum Production & Exploration Association (APPEA) Journal

... acquisition. Such a delaying effect was removed when calculating the VSP interval velocity, which had reasonable consistencies with sonic velocity...

Time-Lapse Seismic and Geomechanics

Martin Landrø, Lasse Amundsen

GEO ExPro Magazine

... distribution, the two maps are very different. the velocity effect in this case. Røste et al. (2005) assumed that the relative velocity change Guilbot and Smith...

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

Search and Discovery.com

... of first-arrival traveltime inversion was developed to estimate a near-surface velocity model for statics corrections in areas with complex geology...

Complex mountainous stepwise tomographic inversion modeling method

Haili Wang, Yongguo Wu, Weibo Li, Zhihui Yan, Li He, Baohua Yu

International Meeting for Applied Geoscience and Energy (IMAGE)

... with full offset is used to describe velocity under LVL. (1) Building initial model of logging. The acoustic logging and VSP logging velocity in the 3D...

Finite-frequency transmission traveltime tomography in VTI media

Fei Luo, Lanlan Yan, Jiexiong Cai

International Meeting for Applied Geoscience and Energy (IMAGE)

... is 90 °, 45 ° and 0 °. Figure 1d-f shows the velocity-related wave path under different incident angles, that is, the traveltime point...

Predicting Formation Target Depth Ahead of the Bit with High Accuracy: A Case Study from the Arun Field for a Deviated Well

William L. Soroka

Indonesian Petroleum Association

... wavelet or improper geologic model can seriously effect the selection of a best match. Figure 3. Comparison of the zero offset VSP to the forward...

The identification and cause analysis of abnormal velocity in the western part of Shaleitian Bulge

Zongyu Zhen, Gang Peng, Xuefeng Zhou, Bo Xi

International Meeting for Applied Geoscience and Energy (IMAGE)

... of removing compaction effect in the western segment of Shaleitian Bulge. Then we find that the velocity anomaly has a certain correlation...

P-Wave Impedance, S-Wave Impedance and Density from Linear AVO Inversion: Application to a VSP Data from Alberta

Faranak Mahmoudian

Search and Discovery.com

...P-Wave Impedance, S-Wave Impedance and Density from Linear AVO Inversion: Application to a VSP Data from Alberta Faranak Mahmoudian P-Wave Impedance...

P-Wave Impedance, S-Wave Impedance and Density from Linear AVO Inversion: Application to a VSP Data from Alberta

Faranak Mahmoudian

Search and Discovery.com

...P-Wave Impedance, S-Wave Impedance and Density from Linear AVO Inversion: Application to a VSP Data from Alberta Faranak Mahmoudian P-Wave Impedance...

Time-Depth Modeling in High Pore-Pressure Environment, Offshore East Coast of India; #30463 (2016)

Nidhi Jindal, Ajoy Kumar Biswal, Kumar Hemant Singh

Search and Discovery.com

..., it was observed that the velocity drop might not be always due to the presence of high pore pressure. It could also be due to the change in lithology...

Reservoir Description by Interferometric Imaging of VSP Data in Transition Zones

Thomas Radford, Martin Karrenbach, Ferry Yustiana, Willi Brianno, Dhea Wachju

Indonesian Petroleum Association

... from the subsurface reservoir. The severe change in the velocity model between the marine and land environment impacts the seismic imaging capability...

Abstract: Joint OBN and 3-D DAS-VSP Data Acquisition and Processing in East China Sea; #91204 (2023)

Gang Yu1, Haibo Liu, Zhonglin Cao, Junjian Li, Jianguo Li, Yuanzhong Chen, Guangming He, Junjun Wu, Ximing Wang

Search and Discovery.com

... separation, velocity analysis and imaging. According to the characteristics of offshore 3-D VSP downgoing multiples, the offshore 3-D VSP downgoing multiple...

3-D High-Resolution Reservoir Characterization from Crosswell Seismic Data

John Washbourne, Kenneth Bube

West Texas Geological Society

... to regularized traveltime velocity inversion, and finally show results from two fully 3-D datasets that demonstrate the specific improvements of a consistent...