... at 0.6, 1.2, 1.8 and 2.2 seconds, respectively in both the base survey (upper figure) and repeat survey (middle figure). However, both virtual shot gathers also contain artifacts that appear to be events at various times, and a number of events show up clearly in the differential panel (bottom figure...

... dataset and present initial solutions that allowed us to obtain robust 3D reservoir images. The system has achieved a remarkable repeatability with mean NRMS of 4-5 % across high fold area between closely spaced repeat surveys. Presentation Date: Wednesday, October 19, 2016 Start Time: 8:50:00 AM...

.... The anomalies caused by the steam injection are identified by observing the difference in P-wave velocity inverted from baseline and repeat seismic data. receiver depth full waveform inversion repeat survey inversion data interpretation upstream oil & gas gardner velocity model p-wave velocity...

... survey''s were not acquired over this field, therefore, the cost is an order of magnitude less than traditional 4D methods that would require a purpose-shot repeat survey. This approach requires only additional processing. This approach is not a replacement for traditional 4D analysis (i.e. with repeated...

... repeat survey deposit continuous improvement tor reservoir characterization knowledge management godbout vtem helicopter time domain electromagnetic irvine vtem time-domain helicopter em system montcalm township copper-nickel discovery witherly exploration transmitter reference...

... meeting seg houston 2005 repeat survey reservoir characterization 4D repeatability beyond twice using variance Jan H. Kommedal* and Olav I. Barkved, BP Norge AS, Godesetdalen, Stavanger, Norway Summary Acquiring multiple repeat time lapse surveys facilitates the use of variance as a measure...

... in the interpretation of time-lapse AVO-derived parameters such as pressure and saturation. christophe ribeiro correction repeat survey time-lapse signature reservoir characterization variation velocity variation seismic data amplitude bertrand signature gulf crossline perturbation seawater...

... of phase in the 4D difference image. Recent experience with time-lapse 3D studies has opened a debate over repetition of acquisition configuration between baseline and repeat surveys. Several recent 4D studies using exactly repeated source and streamer geometry ( e.g . Cooper et al ., 1999; Koster et al...

... Expanded Abstracts FARM : towed and sea-bed data Seabed survey A baseline survey was acquired in 1995 and the repeat survey was acquired 10 months after the start of production in November 1997. The same vessel and source were used for the two surveys and the far-field signature estimated using Geco-Prakla...

... South. The expectation was that these cables would be used for repeat surveys. However, one cable was damaged after the base 3D survey was conducted, and this cable was immediately removed for repair. A wake-up and check-out cruise in January, 1999 revealed that two of the three remaining cables would...

... ABSTRACT No preview is available for this paper. panel data co 2 amplitude spectrum pair crosscorrelation application vacuum field processing parameter surface seismic data multicomponent corridor stack receiver correction seismic data repeat survey variation amplitude...

... ABSTRACT No preview is available for this paper. reservoir characterization random noise sensitivity difference cube repeat survey upstream oil & gas coherency different imaging technique izo acquisition 4 imaging technique interpretation amplitude repeatability...

... ABSTRACT No preview is available for this paper. seismic data upstream oil & gas property variation production characteristic anisotropy pore structure repeat survey initial survey bulk rock property injection well variation property change interpretation northwest...