Scientific Drilling

Santamarina, J. Carlos; Dai, Sheng; Jang, Junbong; Terzariol, Marco

doi:10.2204/iodp.sd.14.06.2012

Cited by 19 publications

(4 citation statements)

References 11 publications

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“…Based on the cutting plan, each pressure core was initially subsampled into 1.2 m or 0.35 m lengths at pressure and placed into storage chambers. These sections of core were subsequently transported to the onshore laboratory and subsampled under pressure into smaller sections of core for testing using pressure-core non-destructive analysis tools (PNATs), which we developed on the basis of pressure core characterization tools (Santamarina et al, 2012). Figure 1 shows an exterior photograph of the PNATs and a conceptual diagram of the pressure core transfer procedures.…”

Section: Sample Preparation and Experimental Setupmentioning

confidence: 99%

Mechanical behavior of hydrate-bearing pressure-core sediments visualized under triaxial compression

Yoneda

Masui

Konno³

et al. 2015

Marine and Petroleum Geology

127

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Section: Sample Preparation and Experimental Setupmentioning

confidence: 99%

Mechanical behavior of hydrate-bearing pressure-core sediments visualized under triaxial compression

Yoneda

Masui

Konno³

et al. 2015

Marine and Petroleum Geology

127

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“…Even then, insight into the microstructure might be hampered by the fact that the recovered samples were usually stored in liquid nitrogen which freezes liquid water present in the sample -possibly altering the microstructure and obscuring details of the GH-sediment interface. Largely unperturbed samples can be expected from pressure-cored samples [Abegg et al, 2008;Konno et al, 2015;Santamarina et al, 2012Santamarina et al, , 2015Yoneda et al, 2013] but access to microstructural information on a submicron scale has not been obtained so far. A number of researchers have attempted to emulate the nucleation and growth of gas hydrate in sedimentary matrices via laboratory experiments to obtain the material properties as a function of the saturation of GH in order to support geophysical exploration methods [Berge et al, 1999;Best et al, 2010Best et al, , 2013Dai et al, 2012;Dvorkin et al, 2003;Ecker et al, 2000;Hu et al, 2010;Li et al, 2011;Priest et al, 2006Priest et al, , 2009Spangenberg and Kulenkampff, 2006;Yun et al, 2005;Zhang et al, 2011].…”

Section: Introductionmentioning

confidence: 99%

Microstructural evolution of gas hydrates in sedimentary matrices observed with synchrotron X‐ray computed tomographic microscopy

Chaouachi

Falenty

Sell

et al. 2015

Geochem Geophys Geosyst

230

210

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The formation process of gas hydrates in sedimentary matrices is of crucial importance for the physical and transport properties of the resulting aggregates. This process has never been observed in situ at submicron resolution. Here we report on synchrotron-based microtomographic studies by which the nucleation and growth processes of gas hydrate were observed at 276 K in various sedimentary matrices such as natural quartz (with and without admixtures of montmorillonite type clay) or glass beads with different surface properties, at varying water saturation. Both juvenile water and metastably gas-enriched water obtained from gas hydrate decomposition was used. Xenon gas was employed to enhance the density contrast between gas hydrate and the fluid phases involved. The nucleation sites can be easily identified and the various growth patterns are clearly established. In sediments under-saturated with juvenile water, nucleation starts at the water-gas interface resulting in an initially several micrometer thick gas hydrate film; further growth proceeds to form isometric single crystals of 10-20 mm size. The growth of gas hydrate from gas-enriched water follows a different pattern, via the nucleation in the bulk of liquid producing polyhedral single crystals. A striking feature in both cases is the systematic appearance of a fluid phase film of up to several micron thickness between gas hydrates and the surface of the quartz grains. These microstructural findings are relevant for future efforts of quantitative rock physics modeling of gas hydrates in sedimentary matrices and explain the anomalous attenuation of seismic/sonic waves.

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“…The contributions in the Special Section capture a snapshot of HBS research~25 years after ODP Leg 164 and at the end of a decade marked by the first deep water production tests (Li et al, 2018;Yamamoto, 2013). The contributions are not representative of the full range of HBS research currently underway and particularly miss the critical role of pressure cores (cores maintained at their in situ pressure during recovery and analysis) in providing constraints on reservoir properties (e.g., Boswell et al, 2018;Dai et al, 2017;Holland et al, 2018;Lee et al, 2013;Priest et al, 2018;Santamarina et al, 2012;Yamamoto, 2015;Yoneda et al, 2017Yoneda et al, , 2018Yun et al, 2010Yun et al, , 2011. In recent years, most studies focused on pressure cores are published in scientific report volumes that document individual drilling expeditions (e.g., Collett, 2014;Collett et al, 2019;Ryu et al, 2013;Yamamoto & Ruppel, 2015).…”

Section: The Future Of Hbs Studiesmentioning

confidence: 99%

Introduction to Special Issue on Gas Hydrate in Porous Media: Linking Laboratory and Field‐Scale Phenomena

2019

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The proliferation of drilling expeditions focused on characterizing natural gas hydrate as a potential energy resource has spawned widespread interest in gas hydrate reservoir properties and associated porous media phenomena. Between 2017 and 2019, a Special Section of this journal compiled contributed papers elucidating interactions between gas hydrate and sediment based on laboratory, numerical modeling, and field studies. Motivated mostly by field observations in the northern Gulf of Mexico and offshore Japan, several papers focus on the mechanisms for gas hydrate formation and accumulation, particularly with vapor phase gas, not dissolved gas, as the precursor to hydrate. These studies rely on numerical modeling or laboratory experiments using sediment packs or benchtop micromodels. A second focus of the Special Section is the role of fines in inhibiting production of gas from methane hydrate, controlling the distribution of hydrate at a pore scale, and influencing the bulk behavior of seafloor sediments. Other papers fill knowledge gaps related to the physical properties of hydrate‐bearing sediments and advance new approaches in coupled thermal‐mechanical modeling of these sediments during hydrate dissociation. Finally, one study addresses the long‐standing question about the fate of methane hydrate at the molecular level when CO2 is injected into natural reservoirs under hydrate‐forming conditions.

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Scientific Drilling

Cited by 19 publications

References 11 publications

Mechanical behavior of hydrate-bearing pressure-core sediments visualized under triaxial compression

Mechanical behavior of hydrate-bearing pressure-core sediments visualized under triaxial compression

Microstructural evolution of gas hydrates in sedimentary matrices observed with synchrotron X‐ray computed tomographic microscopy

Introduction to Special Issue on Gas Hydrate in Porous Media: Linking Laboratory and Field‐Scale Phenomena

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