Estimation of CO<sub>2</sub> Saturation from Time-Lapse CO<sub>2</sub> well Logging in an Onshore Aquifer, Nagaoka, Japan

Xue, Ziqiu; Tanase, Daiji; Watanabé, Jirô

doi:10.1071/eg06019

Cited by 105 publications

(42 citation statements)

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“…For all of these purposes it is necessary to understand the behavior of CO 2 in rock. It is also important to know how injected CO 2 will infiltrate into the surrounding rock mass in CO 2 capture and storage projects [ Xue et al , 2006; Nooner et al , 2007].…”

Section: Introductionmentioning

confidence: 99%

Acoustic emission monitoring of hydraulic fracturing laboratory experiment with supercritical and liquid CO₂

Ishida

Aoyagi

Niwa

et al. 2012

Geophysical Research Letters

278

112

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[1] Carbon dioxide (CO 2 ) is often used for enhanced oil recovery in depleted petroleum reservoirs, and its behavior in rock is also of interest in CO 2 capture and storage projects. CO 2 usually becomes supercritical (SC-CO 2 ) at depths greater than 1,000 m, while it is liquid (L-CO 2 ) at low temperatures. The viscosity of L-CO 2 is one order lower than that of normal liquid water, and that of SC-CO 2 is much lower still. To clarify fracture behavior induced with injection of the low viscosity fluids, we conducted hydraulic fracturing experiments using 17 cm cubic granite blocks. The AE sources with the SC-and L-CO 2 injections tend to distribute in a larger area than those with water injection, and furthermore, SC-CO 2 tended to generate cracks extending more three dimensionally rather than along a flat plane than L-CO 2 . It was also found that the breakdown pressures for SC-and L-CO2 injections are expected to be considerably lower than for water.

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Section: Introductionmentioning

confidence: 99%

Acoustic emission monitoring of hydraulic fracturing laboratory experiment with supercritical and liquid CO₂

Ishida

Aoyagi

Niwa

et al. 2012

Geophysical Research Letters

278

112

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“…Nagaoka: Xue et al 2006;Murray et al, 2010). The main PNG derived parameters are the macroscopic capture cross section () and the neutron porosity (TPHI) of the formation.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of saturation changes and salt precipitation during CO2 injection using pulsed neutron-gamma logging at the Ketzin pilot site

Baumann

Henninges

Lucia

2014

International Journal of Greenhouse Gas Control

106

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During injection of CO 2 , monitoring of the subsurface saturation changes is required. For well logging in cased boreholes only a limited number of techniques such as radiometric pulsed neutron-gamma (PNG) logging are applicable. The conventional PNG saturation model mainly considers a displacement process. But during CO 2 injection additional processes such as evaporation and salt precipitation are expected to occur as a result of the mutual solubility between brine and CO 2 . For this purpose an extended PNG saturation model for NaCl-brines is developed and applied to a timelapse PNG monitoring data set from the Ketzin site. The results show that for the observation well further away from the injection well, the conventional displacement saturation model is valid, with average CO 2 saturations below 60 %. In contrast, the data from the injection well shows that both evaporation and salt precipitation have occurred. Here, the largest CO 2 saturations with values up to 100 % are determined locally. The results of the extended saturation model indicate that dry-out regions, where only CO 2 and halite with saturations up to 1.4 % exist, and maximum halite saturations up to 14.1 % occur in the vicinity of the brine levels. The halite saturation distribution in the injection well seems to be controlled by changes in the injection regime associated with changing brine levels, lithological heterogeneities, and capillary effects. PNG monitoring in combination with the extended saturation model is suited to determine displacement and evaporation/precipitation processes for CO 2 storage operations.

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“…stability of production wellbores and gas hydrate reservoirs. Pwave methods have been used to monitor CO 2 field injection tests (Arts et al, 2004;Daley et al, 2008;James et al, 1995;Spyros and Bruce, 1997;Spyros et al, 1995;Xue et al, 2006) and to assess CO 2 transport and saturation in laboratory experiments (Angeli et al, 2009;Lei and Xue, 2009;Sarout et al, 2009;Shi et al, 2007). In this study we use P-waves to monitor the evolution of CH 4 hydrate formation, CO 2 flooding, CH 4 -CO 2 replacement, and final hydrate dissociation in sands.…”

Section: Introductionmentioning

confidence: 97%

P-wave monitoring of hydrate-bearing sand during CH4–CO2 replacement

Espinoza¹,

Santamarina²

2011

International Journal of Greenhouse Gas Control

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Estimation of CO₂ Saturation from Time-Lapse CO₂ well Logging in an Onshore Aquifer, Nagaoka, Japan

Cited by 105 publications

References 0 publications

Acoustic emission monitoring of hydraulic fracturing laboratory experiment with supercritical and liquid CO₂

Acoustic emission monitoring of hydraulic fracturing laboratory experiment with supercritical and liquid CO₂

Monitoring of saturation changes and salt precipitation during CO2 injection using pulsed neutron-gamma logging at the Ketzin pilot site

P-wave monitoring of hydrate-bearing sand during CH4–CO2 replacement

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Estimation of CO2 Saturation from Time-Lapse CO2 well Logging in an Onshore Aquifer, Nagaoka, Japan

Cited by 105 publications

References 0 publications

Acoustic emission monitoring of hydraulic fracturing laboratory experiment with supercritical and liquid CO2

Acoustic emission monitoring of hydraulic fracturing laboratory experiment with supercritical and liquid CO2

Monitoring of saturation changes and salt precipitation during CO2 injection using pulsed neutron-gamma logging at the Ketzin pilot site

P-wave monitoring of hydrate-bearing sand during CH4–CO2 replacement

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Estimation of CO₂ Saturation from Time-Lapse CO₂ well Logging in an Onshore Aquifer, Nagaoka, Japan

Acoustic emission monitoring of hydraulic fracturing laboratory experiment with supercritical and liquid CO₂

Acoustic emission monitoring of hydraulic fracturing laboratory experiment with supercritical and liquid CO₂