scholarly journals An Evaluation of the Carbon Sequestration Potential of the Cambro-Ordovician Strata of the Illinois and Michigan Basins. Part 1. Evaluation of Phase 2 CO2 Injection Testing in the Deep Saline Gunter Sandstone Reservoir (Cambro-Ordovician Knox Group), Marvin Blan No. 1 Hancock County, Kentucky Part 2. Time-lapse Three-Dimensional Vertical Seismic Profile (3D-VSP) of Sequestration Target Interval with Injected Fluids

2012 ◽  
Author(s):  
Richard Bowersox ◽  
John Hickman ◽  
Hannes Leetaru
Keyword(s):  
Three Dimensional ◽  
Time Lapse ◽  
Seismic Profile ◽  
Phase 2 ◽  
Target Interval ◽  
Vertical Seismic Profile ◽  
Carbon Sequestration Potential ◽  
Sequestration Potential ◽  
Hancock County ◽  
Sandstone Reservoir

Time-lapse vertical seismic profile for CO2 monitoring in carbon capture, utilization , and sequestration/EOR, Farnsworth project

2018 ◽  
Author(s):  
George El-kaseeh ◽  
Paige Czoski ◽  
Robert Will ◽  
Robert Balch ◽  
William Ampomah ◽  
...  
Keyword(s):  
Carbon Capture ◽  
Time Lapse ◽  
Seismic Profile ◽  
Vertical Seismic Profile ◽  
Co2 Monitoring

Measurement of seawater average velocity using water bottom multiples from vertical seismic profile surveys

2016 ◽  
Vol 4 (4) ◽  
pp. SQ13-SQ22 ◽  
Author(s):  
Yingping Li ◽  
Ben Hewett
Keyword(s):  
Average Velocity ◽  
Seismic Velocity ◽  
Autonomous Underwater Vehicles ◽  
Time Lapse ◽  
Seismic Profile ◽  
Temporal Variations ◽  
Vertical Seismic Profile ◽  
Velocity Models ◽  
Vsp Data ◽  
Water Bottom

Previous diagnoses of surface seismic velocity models with vertical seismic profile (VSP) data in the Gulf of Mexico have indicated that shallow velocities were poorly constrained by VSP due to ringing caused by multiple casing strings. This ringing also hampered direct measurement of the seawater average velocity (SWAV) at a rig site with direct arrivals of a zero-offset VSP (ZVSP). We have directly measured the SWAV at a rig site with a known water depth by using differential times between primary water bottom multiples (WBMs) and direct first arrivals acquired in a marine VSP survey. We developed a procedure to process ZVSP-WBM signals for SWAV measurement. This WBM method is successfully applied to VSP data recorded at 27 rig sites in the deep-water environments of North and South America. Our results suggest that VSP processors should implement this method and add the SWAV measurement in their future velocity survey reports. We have estimated water bottom depths using differential times. We found that the estimated water depths are comparable with those acquired from sonar measurements by autonomous underwater vehicles, but with large uncertainties. The WBM method is extended by using data from a vertical incidence VSP to measure a profile of the SWAV along the path of a deviated well and evaluate possible lateral variations of SWAV. This method can potentially be applied to a time-lapse VSP to monitor temporal variations of SWAV. We also evaluated the application scope and limitations of the WBM method.

scholarly journals Evaluation of grapevine trunk size by use of a handheld camera and three-dimensional modelling

OENO One ◽  
2019 ◽  
Vol 53 (4) ◽  
Author(s):  
Khalil Bou Nader ◽  
Leonard Maximilian Pfahl ◽  
Eric Gomès ◽  
Manfred Stoll
Keyword(s):  
Three Dimensional ◽  
Cost Effective ◽  
Image Resolution ◽  
Vitis Vinifera L ◽  
Cross Sectional ◽  
Carbon Sequestration Potential ◽  
Trunk Diameter ◽  
Lighting Conditions ◽  
Sequestration Potential ◽  
Three Dimensional Models

Background and aims: Measurement of grapevine size is necessary to assess carbon reserves at the level of individual vines and to estimate the carbon sequestration potential of vineyards. Methods of measurement rely mostly on traditional dendrological techniques that may be prone to error. In this study, we examined the use of structure-from-motion with multiview stereophotogrammetry (SfM-MVS) to obtain accurate measurements of vine trunk thickness and volume. SfM-MVS enables the creation of scaled, georeferenced three-dimensional models based on a set of overlapping photographs.Methods and results: The study was conducted using field-grown Vitis vinifera L. cv. Riesling vines aged 5, 22 and 46 years and pruned in a bilateral Guyot. Trunk diameter, cross-sectional area and circumference 10 cm above the grafting point were measured by traditional dendrometry, and the values obtained compared with corresponding estimates from reconstructed three-dimensional SfM-MVS models. SfM-MVS was also used to estimate total trunk volume. Correlation between measured values and modelled estimates was close to unity (0.976 ≤ R2 ≤ 0.988). The estimates for 5-year-old vines had the largest errors.Conclusions: Under adequate lighting conditions and with sufficient image resolution, SfM-MVS is able to produce accurate models of vine trunks.Significance of the study: This work serves as proof of concept for the use of SfM-MVS to measure the trunk size of field-grown grapevines of different ages. This technique, which is relatively new, is cost-effective and easy to implement. Further research is necessary to determine specific applications of SfM-MVS, in which it could supplement or replace traditional dendrological techniques.

Time-lapse full waveform inversion of vertical seismic profile data: Workflow and application to the CO2CRC Otway project

2017 ◽  
Vol 44 (14) ◽  
pp. 7211-7218 ◽  
Author(s):  
Anton Egorov ◽  
Roman Pevzner ◽  
Andrej Bóna ◽  
Stanislav Glubokovskikh ◽  
Vladimir Puzyrev ◽  
...  
Keyword(s):  
Waveform Inversion ◽  
Time Lapse ◽  
Seismic Profile ◽  
Full Waveform Inversion ◽  
Profile Data ◽  
Vertical Seismic Profile ◽  
Full Waveform

scholarly journals Time-lapse walkaway vertical seismic profile monitoring for CO2 injection at the SACROC enhanced oil recovery field: A case study

Geophysics ◽  
2014 ◽  
Vol 79 (2) ◽  
pp. B51-B61 ◽  
Author(s):  
Di Yang ◽  
Alison Malcolm ◽  
Michael Fehler ◽  
Lianjie Huang
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Time Lapse ◽  
Seismic Profile ◽  
Vertical Seismic Profile ◽  
Image Domain ◽  
Velocity Models ◽  
Injection Zone ◽  
Vsp Data ◽  
Velocity Changes

Geologic carbon storage involves large-scale injections of carbon dioxide into underground geologic formations. Changes in reservoir properties resulting from [Formula: see text] injection and migration can be characterized using monitoring methods with time-lapse seismic data. To achieve economical monitoring, vertical seismic profile (VSP) data are often acquired to survey the local injection area. We investigated the capability of walkaway VSP monitoring for [Formula: see text] injection into an enhanced oil recovery field at SACROC, West Texas. VSP data sets were acquired in 2008 and 2009, and [Formula: see text] injection took place after the first data acquisition. Because the receivers were located above the injection zone, only reflection data contain the information from the reservoir. Qualitative comparison between reverse-time migration images at different times revealed vertical shifts of the reflectors’ center, indicating the presence of velocity changes. We examined two methods to quantify the changes in velocity: standard full-waveform inversion (FWI) and image-domain wavefield tomography (IDWT). FWI directly inverts seismic waveforms for velocity models. IDWT inverts for the time-lapse velocity changes by matching the baseline and time-lapse migration images. We found that, for the constrained geometry of VSP surveys, the IDWT result was significantly more consistent with a localized change in velocity as expected from a few months of [Formula: see text] injection. A synthetic example was used to verify the result from the field data. By contrast, FWI failed to provide quantitative information about the volumetric velocity changes because of the survey geometry and data frequency content.

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