Time-lapse seismic surveys in the North Sea and their business impact

Koster, Klaas; Gabriels, Pieter; Hartung, M.; Verbeek, John; Deinum, Geurt; Staples, Rob

doi:10.1190/1.1438594

Cited by 88 publications

(35 citation statements)

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“…Many types of physical changes can be detected with time-lapse seismic surveys and published examples include observing effects due to fluid movements (e.g. Koster et al 2000) as well as pressure depletion (e.g. Guilbot and Smith, 2002;Watts et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Whole earth 4D: Reservoir monitoring geomechanics

Hatchell

Beukel

Molenaar

et al. 2003

SEG Technical Program Expanded Abstracts 2003

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Time-lapse (4D) seismic monitoring of pressure-induced changes in depleting gas fields reveals that detectable differences in seismic arrival times are observed above the reservoir interval. Geomechanical models of depleting reservoirs predict that as a result of reservoir compaction due to pressure depletion, changes in the long-wavelength stress and strain fields occur in the rocks bounding the reservoir. Models incorporating the geomechanical stress and strain field changes predict changes in the two-way arrival times that are compared with actual time-shift observations at a depleting gas field in the North Sea. The geomechanical-based predictions are in good agreement with the observations. Detecting geomechanical changes in the over-and underburden rocks opens up new ways of using 4D data, especially in places where the signal from the reservoir rocks is small.

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Section: Introductionmentioning

confidence: 99%

Whole earth 4D: Reservoir monitoring geomechanics

Hatchell

Beukel

Molenaar

et al. 2003

SEG Technical Program Expanded Abstracts 2003

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“…For example, Koster, et al, (2000) displayed average NRMS values of 35% in the Draugen field, while Kommedal, et al, (2005) reported NRMS values of 14% and Eiken, et al, (2003) quoted NRMS values as low as 6-12%.…”

Section: -2mentioning

confidence: 99%

Processing and interpretation of time-lapse seismic data from a heavy oil field, Alberta, Canada

Kelly

Lawton

2012

SEG Technical Program Expanded Abstracts 2012

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The monitoring of a SAGD heavy oil reservoir is commonly executed through time-lapse 3D seismic surveying, focused on identifying areas of steam stimulation by tracking the movement of a steam front, and identifying areas of bypassed reserves. In this thesis, we processed and interpreted a 4D -3C seismic dataset, identified time-lapse amplitude anomalies and isochron time-delays associated with the injection of high volumes of steam into a McMurray Formation reservoir. Through processing, and the application of a novel calibration procedure, non-production related differences between the baseline and monitor seismic surveys were minimized. Production-related differences were analyzed through a variety of geophysical techniques, and were projected into a map display to delineate the spatial position of the reservoir steam zones. It was interpreted that the observed amplitude anomalies corresponded to steam injection, while concurrent time-delays represent reservoir heating above pre-injection ambient temperatures.

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“…Time-lapse seismic monitoring (4D) seismic surveys were introduced from the early1990s (MacLeod et al 1999;Koster et al 2000;Hansen et al 2001;de Waal & Calvert 2003;Hubans et al 2003;Marsh et al 2003;McInally et al 2003;Rose et al 2011). During production, the pore fluids, pore pressure and temperature change in the reservoir, and these affect the seismic response.…”

Section: Enabling Technologies In a Mature Basinmentioning

confidence: 99%