Multiple physical properties of gas hydrate-bearing sediments recovered from Alaska North Slope 2018 Hydrate-01 Stratigraphic Test Well

Yoneda, Jun; Jin, Yusuke; Muraoka, Michihiro; Oshima, Motoi; Suzuki, Kiyofumi; Walker, Mike; Otsuki, Satoshi; Kumagai, Kenichi; Collett, Timothy S.; Boswell, Ray; Okinaka, Norihiro

doi:10.1016/j.marpetgeo.2020.104748

Cited by 39 publications

(103 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sidewall pressure cores were collected in the Hydrate-01 STW using Halliburton’s CoreVault tool to gather grain size and other data needed for the design of the project production test wells. ,, The CoreVault tool is a wireline deployed mechanical (rotary) coring instrument that can obtain up to 10 cores (each measuring 2.25 in. in length with diameter of 1.5 in.)…”

Section: Hydrate-01 Acquistion Of Pressure Coresmentioning

confidence: 99%

“…There were a total of 39 attempted coring events over the 5 wireline CoreVault core runs with 34 cores successfully recovered (Table ). A total of 13 pressure core samples were extracted, preserved in liquid nitrogen, and shipped to the laboratories of the National Institute of Advanced Industrial Science and Technology in Sapporo, Japan, for advanced laboratory analysis. , The remaining 21 core samples were shipped to the Stratum Reservoir laboratories in Golden, Colorado, for routine and advanced core analysis …”

Section: Hydrate-01 Acquistion Of Pressure Coresmentioning

confidence: 99%

See 1 more Smart Citation

Planning and Operations of the Hydrate 01 Stratigraphic Test Well, Prudhoe Bay Unit, Alaska North Slope

et al. 2022

Self Cite

View full text Add to dashboard Cite

The National Energy Technology Laboratory, the Japan Oil, Gas and Metals National Corporation, and the U.S. Geological Survey are leading an effort to conduct an extended gas hydrate production test in northern Alaska. The proposed production test required the drilling of an initial stratigraphic test well (STW) to confirm the geologic conditions of the proposed test site. This well was completed in January 2019 in cooperation with the Prudhoe Bay Unit Working Interest Owners. The Prudhoe Bay Unit Hydrate-01 STW was spudded on 10-December-2018. Downhole data acquisition was completed on 25-December-2018, and the rig was released on 01-January-2019. The Hydrate-01 STW was drilled in two sections, including the surface hole that was drilled to a depth of 2248 ft measured depth (MD) (685 m MD) and cased, and the production hole section that was drilled to a depth of 3558 ft MD (1084 m MD) and also cased. A thermally chilled mineral-oil-based mud was used in the main (production) hole section of the well to maintain wellbore stability and quality of the wellbore acquired data. The primary wellbore data were acquired using logging-while-drilling tools. A sidewall pressure core system was also deployed to gather grain size and other data needed for the design of the future production test wells. In addition to confirming the geologic conditions at the test site, the Hydrate-01 STW was designed to serve as a monitoring well during future field operations. Therefore, two sets of fiber-optic cables, each including a bundled distributed acoustic sensor (DAS) and a distributed temperature sensor (DTS), were clamped to the outside of the production casing and cemented in place. In March 2019, the project team acquired three-dimensional (3D) DAS vertical seismic profiling data in the Hydrate-01 STW. Temperature surveys were also acquired with the DTS as deployed in the Hydrate-01 STW during the completion of the well and nearly continuously since March-2019.

show abstract

Section: Hydrate-01 Acquistion Of Pressure Coresmentioning

confidence: 99%

Section: Hydrate-01 Acquistion Of Pressure Coresmentioning

confidence: 99%

Planning and Operations of the Hydrate 01 Stratigraphic Test Well, Prudhoe Bay Unit, Alaska North Slope

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…In reality, methane hydrates predominately occur in sedimentary rocks or unconsolidated clay matrix (e.g., silica, kaolinite, and montmorillonite)-dominated environmental settings under appropriate temperatures and pressures. , Therefore, fundamental mechanical properties of gas hydrate-bearing sediments are of importance to evaluate the mechanical stability of gas hydrate reservoirs as drilling and coring operations are carried out in gas hydrate zones. Followed by this fact, a number of measurements on the mechanical properties of gas hydrate-bearing sediments , were conducted. It has been demonstrated that the mechanical properties of gas hydrate-bearing sediment systems are greatly affected by the saturation, morphology, and microstructure of gas hydrates, as well as the strain-induced dynamic rearrangement of sediment-based gas hydrate matrices. ,− Moreover, the effective elastic properties of gas hydrate-bearing sediment systems vary with the presence of sedimentary minerals , because of their intrinsic differences in the interfacial interactions between gas hydrates and sedimentary minerals .…”

Section: Introductionmentioning

confidence: 99%

Mechanical Instability of Methane Hydrate–Mineral Interface Systems

Cao

Ning

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Massive methane hydrates occur on sediment matrices in nature. Therefore, sediment-based methane hydrate systems play an essential role in the society and hydrate community, including energy resources, global climate changes, and geohazards. However, a fundamental understanding of mechanical properties of methane hydrate−mineral interface systems is largely limited due to insufficient experimental techniques. Herein, by using large-scale molecular simulations, we show that the mechanical properties of methane hydrate−mineral (silica, kaolinite, and Wyoming-type montmorillonite) interface systems are strongly dictated by the chemical components of sedimentary minerals that determine interfacial microstructures between methane hydrates and minerals. The tensile strengths of hydrate− mineral systems are found to decrease following the order of Wyoming-type montmorillonite-> silica-> kaolinite-based methane hydrate systems, all of which show a brittle failure at the interface between methane hydrates and minerals under tension. In contrast, upon compression, methane hydrates decompose into water and methane molecules, resulting from a large strain-induced mechanical instability. In particular, the failure of Wyoming-type montmorillonite-based methane hydrate systems under compression is characterized by a sudden decrease in the compressive stress at a strain of around 0.23, distinguishing it from those of silica-and kaolinite-based methane hydrate systems under compression. Our findings thus provide a molecular insight into the potential mechanisms of mechanical instability of gas hydrate-bearing sediment systems on Earth.

show abstract

“…The sediment containing a high volume ratio of quartz yields less compressibility. Thus, it is expected that the permeability of sediments with a high-quartz content will not decrease as rapidly with increasing effective stress as is observed in softer sediments with a high-clay content . Sediment compressibility is also affected by the particle size of the sediment.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, it is expected that the permeability of sediments with a high-quartz content will not decrease as rapidly with increasing effective stress as is observed in softer sediments with a high-clay content. 27 Sediment compressibility is also affected by the particle size of the sediment. Laboratory experiment shows that smaller sediment particle sizes generated more obvious deformations following hydrate dissociation.…”

Section: ■ Discussionmentioning

confidence: 99%

Influence of Flow Properties on Gas Productivity in Gas-Hydrate Reservoirs: What Can We Learn from Offshore Production Tests?

et al. 2021

View full text Add to dashboard Cite

Gas hydrates are expected to be an energy resource in this century. Many countries, such as the United States, China, India, and Japan, have explored potential reservoirs and promising production methods. During the past decade, Japan has conducted the world’s first offshore production test in the eastern Nankai Trough, followed by China in the South China Sea. These offshore production tests have demonstrated that gas can be produced continuously from hydrate-bearing sand or silt-rich sediments. However, production tests in the eastern Nankai Trough have shown that gas production declines for a few days and then remains constant at a constant pressure in the bottom hole for at least a period of 4 days. This result is different from predicted behaviors by numerical simulations, showing a gradual increase in the gas production rate with time. The discrepancy between actual data and numerical simulations indicates that numerical simulators overestimate the response as a result of the lack of a proper system description in the models. Numerical simulation can reproduce the tendency of gas production stagnation by considering hydrate reformation in the reservoir. However, hydrate reformation is not expected to occur during the early stages of tests. Recent experimental and numerical studies have shown that sediment compaction and particle crushing by high effective stress, migration of fines leading to the formation of a skin, and changes in relative permeability are induced by depressurization during gas production. These phenomena result in dynamic permeability changes that can lead to gas production stagnation in the early stages.

show abstract

Multiple physical properties of gas hydrate-bearing sediments recovered from Alaska North Slope 2018 Hydrate-01 Stratigraphic Test Well

Cited by 39 publications

References 59 publications

Planning and Operations of the Hydrate 01 Stratigraphic Test Well, Prudhoe Bay Unit, Alaska North Slope

Planning and Operations of the Hydrate 01 Stratigraphic Test Well, Prudhoe Bay Unit, Alaska North Slope

Mechanical Instability of Methane Hydrate–Mineral Interface Systems

Influence of Flow Properties on Gas Productivity in Gas-Hydrate Reservoirs: What Can We Learn from Offshore Production Tests?

Contact Info

Product

Resources

About