Time Lapse VSP Program for Otway Basin CO2 Sequestration Pilot Project

Urošević, Milovan; Sherlock, Donald H.; Kepic, Anton; Nakanishi, Shigetaka

doi:10.3997/2214-4609.20147808

Cited by 7 publications

(6 citation statements)

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“…An example of successful cross-equalisation and subsequent differencing is shown in Figure3. There, pre and post-CO2 injection volumes were subtracted, yielding a coherent difference image that was expected from numerical predictions (Urosevic et al 2010). Comparing the data of Figures 3 (a and b) we can see that two data sets with vastly different noise pattern (Figure 1) were successfully crossequalized.…”

Section: Discussionmentioning

confidence: 62%

“…Otway basin pilot project is certainly the first project where TL seismic methodology is applied to monitor CO2 injection into a deep depleted gas reservoir. The critical components of the TL program were: 4D seismic response prediction ( Li et al, 2006) pre-base line repeatability studies, acquisition design (Urosevic et al, 2008) and data processing strategy .…”

Section: Introductionmentioning

confidence: 99%

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Seismic Monitoring of CO2 Geosequestration in Otway Basin, Australia

Urošević¹,

Shulakova²,

Pevzner³

et al. 2010

72nd EAGE Conference and Exhibition Incorporating SPE EUROPEC 2010

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CO2CRC Otway Project is the Australia s first demonstration of the deep geological storage of CO2. CO2 has been injected in a depleted gas field at the depth of 2050 m and then will be injected in saline aquifer at the depth of around 1 km. For time lapse studies, we had four different 3D seismic surveys available. Besides of a large 3D seismic volume acquired in the year 2000 prior gas production of the reservoir, three sequential 3D surveys were acquired at the same site but over a smaller area: baseline survey in 2008 and two monitoring surveys in 2009 and 2010. We concentrated on repeatability of 4D seismic data acquisition and processing. This led us to the results which allow to define CO2 location in the reservoir and proves that time-lapse seismic is a valuable tool in CO2 monitoring even in on-shore case.

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Section: Discussionmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Seismic Monitoring of CO2 Geosequestration in Otway Basin, Australia

Urošević¹,

Shulakova²,

Pevzner³

et al. 2010

72nd EAGE Conference and Exhibition Incorporating SPE EUROPEC 2010

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View full text Add to dashboard Cite

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“…VSP methods are well suited for pilot carbon sequestration projects as, on one hand, they provide information at higher vertical resolution than surface seismic while on the other hand they allow for multiple economical repeat surveys. Indeed, VSP surveys for

{CO}_{2}

monitoring have been used at pilot‐scale

{CO}_{2}

injection sites such as Ketzin, SACROC, Frio, and Otway . VSP methods have been also used in commercial projects such as IEA GHG Weyburn‐Midale CO2 Monitoring and Storage Project and Aquistore …”

Section: Methodsmentioning

confidence: 99%

Sensitivity of seismic response for monitoring storage in a low porosity reservoir of the St Lawrence Lowlands, Québec, Canada: Part 2 – Synthetic modeling

et al. 2017

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Deployment of carbon capture and storage on a large scale poses many challenges. One is the availability of reservoirs with suitable characteristics (high porosity and permeability, matched large emitters, etc.). Such a challenge might lead to the selection of reservoirs with relatively low porosity. In those environments, the rock matrix is often stiff and questions arise regarding the capabilities of seismic methods to monitor CO 2 injection. An illustrative modeling of seismic reflectivities within a hypothetical geological formation with physical properties equal to that of the low‐porosity reservoir in the St. Lawrence Lowlands sedimentary basin, suggests that a CO 2 liquid‐water contact is a potentially good seismic reflector despite a priori unfavorable conditions. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…Obviously these values are affected by random noise only. Our noisy models do not account for the variations in the near surface conditions and positioning errors which are important factors affecting repeatability of seismic time lapse land surveys (Urosevic et al, 2008).…”

Section: Figurementioning

confidence: 99%

“…Clearly we expect very subtle to un-measurable 4D seismic effects, particularly when CO 2 is injected into a small, deep and structurally complex gas reservoir as is the case for Naylor field in Otway basin. We deployed somewhat specific monitoring strategies for Naylor (Urosevic et al, 2007(Urosevic et al, , 2008. The main idea is to have assurance surveys which will be also used to detect possible upward migration of CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Seismic Monitoring Feasibility Study of CO2 Injection into Saline Aquifer – A Case Study from Otway Basin, Australia

Pevzner¹,

Shulakova²,

Wisman³

et al. 2009

71st EAGE Conference and Exhibition Incorporating SPE EUROPEC 2009

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CO2 sequestration into underground formations requires the application of well panned monitoring methodology. One of the key elements in the design of the monitoring strategy is the prediction of rock property changes resulting form injection of CO2. In this study we investigate whether seismic methods can be used to detect small quantities of CO2 injected into saline aquifer. To do this we generated accurate, noise polluted time lapse synthetic models. We pushed the noise level to an extreme case to arrive at the limiting conditions for the application of time-lapse survey. Despite the fact that synthetic noise models can never quite simulate the in situ conditions, results of the modelling shows that we can expect to detect time-lapse seismic response. Moreover this is true even for the worst possible data quality we experienced during repeated seismic test surveys in Otway basin. Thus as much as qualitative analysis is concerned it is clear that even sparse time lapse 3D seismic surveys are sufficient for monitoring of CO2 injection at Naylor site. However, to map distribution of CO2 plume in space or to attempt quantitative analysis we need the highest possible S/N ratio and high resolution seismic data.

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Time Lapse VSP Program for Otway Basin CO2 Sequestration Pilot Project

Cited by 7 publications

References 0 publications

Seismic Monitoring of CO2 Geosequestration in Otway Basin, Australia

Seismic Monitoring of CO2 Geosequestration in Otway Basin, Australia

Sensitivity of seismic response for monitoring storage in a low porosity reservoir of the St Lawrence Lowlands, Québec, Canada: Part 2 – Synthetic modeling

Seismic Monitoring Feasibility Study of CO2 Injection into Saline Aquifer – A Case Study from Otway Basin, Australia

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