Monitoring reservoir compaction from subsidence and time‐lapse time shifts in the Dan field

Hatchell, Paul; Jørgensen, Ole A; Gommesen, Lars; Stammeijer, Jan

doi:10.1190/1.2793062

Cited by 19 publications

(13 citation statements)

References 3 publications

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“…Such time‐shift could be caused by overburden compaction or expansion during the injection operation, which has been used to characterize reservoir stress changes (Hatchell and Bourne ; Hatchell et al . ). However, the time‐shift between time‐lapse pre‐stack datasets is variable along offset, which is possibly entangled with wave propagation and tuning effects.…”

Section: Time‐lapse Pre‐stack Seismic Datasets At Cranfieldmentioning

confidence: 97%

“…We notice a downward shift from the post-to the pre-injection data by comparing the time scale of events, for example, three events from the shallow to the deep as pointed by the red, black and purple arrows. Such time-shift could be caused by overburden compaction or expansion during the injection operation, which has been used to characterize reservoir stress changes (Hatchell and Bourne 2005;Hatchell et al 2007). However, the time-shift between time-lapse prestack datasets is variable along offset, which is possibly entangled with wave propagation and tuning effects.…”

Section: T I M E -L a P S E P R E -S T A C K S E I S M I C D A T A S mentioning

confidence: 99%

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Time‐lapse pre‐stack seismic data registration and inversion for CO₂ sequestration study at Cranfield

Zhang

Song

Fomel

et al. 2014

Geophysical Prospecting

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A B S T R A C TPre-stack seismic data are indicative of subsurface elastic properties within the amplitude versus offset characteristic and can be used to detect elastic rock property changes caused by CO 2 injection. We perform time-lapse pre-stack 3-D seismic data analysis for monitoring CO 2 sequestration at Cranfield. The time-lapse amplitude differences of Cranfield datasets are found entangled with time-shifts. To disentangle these two characters, we apply a local-correlation-based warping method to register the time-lapse pre-stack datasets, which can effectively separate the time-shift from the time-lapse seismic amplitude difference without changing the original amplitudes. We demonstrate the effectiveness of our registration method by evaluating the inverted elastic properties. These inverted time-lapse elastic properties can be reliably used for monitoring CO 2 plumes.

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Section: Time‐lapse Pre‐stack Seismic Datasets At Cranfieldmentioning

confidence: 97%

Section: T I M E -L a P S E P R E -S T A C K S E I S M I C D A T A S mentioning

confidence: 99%

Time‐lapse pre‐stack seismic data registration and inversion for CO₂ sequestration study at Cranfield

Zhang

Song

Fomel

et al. 2014

Geophysical Prospecting

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“…The propagation of the compaction to the surface may result in visible subsidence and changes in the seismic response. Some examples of compacting reservoirs are the Valhall field [1], the Shearwater field [2], and the Dan field [3], all located in the North Sea. Forward models for predicting geomechanical changes due to pressure depletion are of interest for monitoring subsidence, for estimating 4D seismic changes, and for understanding the potential of induced seismicity.…”

Section: Introductionmentioning

confidence: 99%

Improved solution of displacements due to a compacting reservoir over a rigid basement

Tempone

Fjær

Landrø

2010

Applied Mathematical Modelling

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a b s t r a c tGeertsma's analytical method is often used to compute strain and stress changes around a compacting geological reservoir. The present work extends Geertsma's solution by adding a rigid layer beneath the compacting reservoir. Analytical formulae are presented for all the components of displacement of a point in the subsurface. Our derivation includes the correction of an error found in the paper written by Sharma in 1956.

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“…Many of the Danish gas fields in the North Sea are produced by natural depletion with gas/fluid expulsion and related compaction as drivers (Hatchell et al 2007;Danish Energy Agency 2013;Calvert et al 2014;Schutjens et al 2019). Often, reservoir compaction is translated into seabed subsidence, which has a direct adverse effect on production facilities.…”

Section: Introductionmentioning

confidence: 99%

An offshore reservoir monitoring system based on fibre-optic distributed sensing of seabed strains

Levenberg

Orozova‐Bekkevold

2020

First Break

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Monitoring reservoir compaction from subsidence and time‐lapse time shifts in the Dan field

Cited by 19 publications

References 3 publications

Time‐lapse pre‐stack seismic data registration and inversion for CO₂ sequestration study at Cranfield

Time‐lapse pre‐stack seismic data registration and inversion for CO₂ sequestration study at Cranfield

Improved solution of displacements due to a compacting reservoir over a rigid basement

An offshore reservoir monitoring system based on fibre-optic distributed sensing of seabed strains

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Monitoring reservoir compaction from subsidence and time‐lapse time shifts in the Dan field

Cited by 19 publications

References 3 publications

Time‐lapse pre‐stack seismic data registration and inversion for CO2 sequestration study at Cranfield

Time‐lapse pre‐stack seismic data registration and inversion for CO2 sequestration study at Cranfield

Improved solution of displacements due to a compacting reservoir over a rigid basement

An offshore reservoir monitoring system based on fibre-optic distributed sensing of seabed strains

Contact Info

Product

Resources

About

Time‐lapse pre‐stack seismic data registration and inversion for CO₂ sequestration study at Cranfield

Time‐lapse pre‐stack seismic data registration and inversion for CO₂ sequestration study at Cranfield