... 4D seismic is a powerful tool for detecting production-related saturation and sometimes pressure changes in hydrocarbon reservoirs. Typically, base and monitor surveys are acquired with high repeatability, a critical requirement for conventional 4D processing. However, seismic acquisition...

... geophysicist artificial intelligence geological subdiscipline depletion economic geology applied geoscience & energy 10 geologist petroleum geology reservoir zone computation machine learning production discrepancy monitor survey spectral bandwidth upper sand surface american association...

... Time-lapse seismic monitoring, when based on full waveform inversion methodologies, relies on both repeatability of baseline, and monitor survey geometries, and complete acquisition (i.e., dense sampling, and wide offsets and azimuths). The costs arising from this make it impractical for use...

... monitoring. Thus, whether sim-source acquisition is feasible for 4D remains a long-standing question. In 2019, bp took the step forward by acquiring the first sim-source ocean bottom node (OBN) monitor survey at the Atlantis field in the Gulf of Mexico (GoM). With 4D-friendly deblending and matching...

... The Thunder Horse baseline Ocean Bottom Node (OBN) seismic survey was acquired in 2015 followed by the first monitor survey in 2020. The goal of the time lapse survey was to reduce sweep uncertainty due to water injection, aquifer influx and compartmentalization. Fast track 4D seismic results...

... sampled and not replicated to reduce costs. As a result, images obtained for different vintages (baseline and monitor surveys) often contain artifacts that may be attributed wrongly to time-lapse changes. To address these issues, we propose to invert the baseline and monitor surveys jointly. By using...

... for the monitor survey. The method uses Proper Orthogonal Decomposition (POD) to extract the basis from the training dataset. The base survey provides the training dataset to estimate the POD. Instead of using a conventional universal basis, the POD basis extracted from the base survey provides a data...

... is used as the initial reflectivity for an iterative LSM reflectivity update of the monitor survey. The 4D noise from this workflow is reduced to an acceptable level. With the strong 4D response presented in the Pyrenees Fields, this technology successfully detects 4D signal between monitor and baseline...

... annual international meeting monitor survey lumley upstream oil & gas full-waveform inversion application reservoir characterization baseline fwi method geophysics fwi result bootstrap artifact monitor inversion vp increase Kamei , R. , and D. , Lumley , 2017 , Full waveform...

... conventional hydrophone hydrophone data reservoir characterization repeatability monitor survey wavefield resolution signal bandwidth streamer case study upstream oil & gas Barnes , S. R. , P. , Lecocq , S. , Perrier , and M. , Igoe , 2017 , Sea surface source...

... shallow heavy oil reservoir inversion anomaly steam anomaly injector vsp seismic data imaging steam injection monitor survey Batzle , M. , and Z. Wang , 1992 , Seismic properties of pore fluids : Geophysics , 57 , 1396 – 1408 , 10.1190/1.1443207 . Han , D...

... ABSTRACT Repeatability of acquisition parameters for the base and monitor surveys is an important consideration for time-lapse studies of hydrocarbon reservoirs using controlled-source electromagnetics (CSEM). Variations in parameters such as source and receivers positions, conductivity...

... onboard as a part of standard QC during a 4D monitor acquisition. This can be quite subjective and expensive since we may end up acquiring more data than necessary. To address this issue of cost versus data quality for 4D marine streamer monitor surveys, a methodology has been developed to aid decision...

... Location: 351F Presentation Type: ORAL gurevich plume upstream oil & gas pevzner seismic monitoring annual meeting seismic repeatability monitor survey geosequestration co 2crc workflow baseline shulakova seg seg international exposition repeatability reservoir characterization...

... response annual meeting overburden representation monitor survey reservoir characterization underburden response transplantation Elison , P. , D. J. van Manen , F. Broggini , and J. O. A. Robertsson , 2016 , Using a Marchenko-redatumed reflection response...

... ABSTRACT Management of producing fields can be enhanced by effective seismic reservoir monitoring. Improved repeatability of 4D monitor surveys can be achieved by applying deghosting and datuming via seismic wavefield separation. By also correcting for the variable distance of the source above...

... joint inversion inversion result correction monitor survey seg seg international exposition water velocity data example annual international meeting annual international conference reservoir characterization node position annual meeting direct arrival time perturbation upstream oil...

... for the baseline and monitor surveys. Here, a known reflector is used as the reference reflector for ILSM. Results with synthetic and field data show that ILSM can eliminate artifacts caused by non-repeatability in time-lapse surveys. Presentation Date: Tuesday, October 18, 2016 Start Time: 11:10:00 AM Location...

... surveillance data impedance th seg annual international meeting artificial intelligence seismic data equatorial guinea reservoir characterization saturation pore pressure reservoir surveillance data information monitor survey upstream oil & gas seg seg international exposition modeling...

.... Presentation Date: Wednesday, October 19, 2016 Start Time: 3:35:00 PM Location: 156 Presentation Type: ORAL isopach ratio difference sagd monitor survey reservoir characterization thermal method observation well time-lapse ppp joint inversion upstream oil & gas p-impedance difference...