Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production

Konno, Yoshihiro; Fujii, Tetsuya; Sato, Akihiko; Akamine, Koya; Naiki, Motoyoshi; Masuda, Yoshihiro; Yamamoto, Koji; Nagao, Jiro

doi:10.1021/acs.energyfuels.6b03143

Cited by 544 publications

(262 citation statements)

References 38 publications

Supporting

Mentioning

260

Contrasting

Unclassified

Order By: Relevance

“…In nature, the dominant gas in NGH is methane, which forms at low temperature and high pressure with extensive distribution in the permafrost and in deep marine sediments [1,3,4]. The evaluation results show that the global quantity of hydrocarbon gas hydrates varies widely between 10 15 and 10 18 ST m 3 (ST represents the standard conditions) [2,5].…”

Section: Introductionmentioning

confidence: 99%

“…Multiple methods have been proposed and employed to decompose hydrate for gas recovery from the HBS, such as depressurization, thermal stimulation, gas exchange, and the use of hydration inhibitors (such as salts and alcohols) [2,[5][6][7][8]. The above methods have been compared in terms of energy efficiency, economic and technological feasibility, and environmental performance [1,4,9,10]. Past laboratory and field tests and numerical studies showed that depressurization is the most potential method for gas recovery from HBS, while the other methods may be suitable for enhancing recovery or reservoir stimulation [4,11,12].…”

Section: Introductionmentioning

confidence: 99%

“…The above methods have been compared in terms of energy efficiency, economic and technological feasibility, and environmental performance [1,4,9,10]. Past laboratory and field tests and numerical studies showed that depressurization is the most potential method for gas recovery from HBS, while the other methods may be suitable for enhancing recovery or reservoir stimulation [4,11,12]. The obvious advantages of depressurization method include its simplicity and technical effectiveness [2,13].…”

Section: Introductionmentioning

confidence: 99%

“…They indicated that the method combining depressurization and thermal stimulation can improve the hydrate production effectively. Based on the latest geological data in the Eastern Nankai Trough, the longterm production behavior was investigated by Sun et al [17] and Konno et al [4]. Both of their results indicated that the gas production rate is expected to increase with time and the simulated water recovery rate cannot match field measured data.…”

Section: Introductionmentioning

confidence: 99%

“…Gas hydrate reservoirs are composed of alternating beds of sand and clay in sediments with various conditions of permeability, porosity, and hydrate saturation [22,25]. Consequently, the development of suitable geological model is critical to identify the dissociation layers and dissociation front induced by depressurization, which are key factors to ensure the success of the next long-term offshore production test [3,4,19,22]. Additionally, the sensitivity analyses of gas production potential in previous studies were concentrated on production pressure, reservoir permeability, porosity, hydrate saturation, thickness, and initial temperature and pressure of HBS [11,12,14,15,26], whereas comprehensive studies related to the effects of well production interval on gas recovery have been reported sparsely, which are important for the optimization of gas production and reducing the water production rate.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Multiphase Flow Behavior of Layered Methane Hydrate Reservoir Induced by Gas Production

Yuan¹,

Xu²,

Xin³

et al. 2017

Geofluids

View full text Add to dashboard Cite

Gas hydrates are expected to be a potential energy resource with extensive distribution in the permafrost and in deep ocean sediments. The marine gas hydrate drilling explorations at the Eastern Nankai Trough of Japan revealed the variable distribution of hydrate deposits. Gas hydrate reservoirs are composed of alternating beds of sand and clay, with various conditions of permeability, porosity, and hydrate saturation. This study looks into the multiphase flow behaviors of layered methane hydrate reservoirs induced by gas production. Firstly, a history matching model by incorporating the available geological data at the test site of the Eastern Nankai Trough, which considers the layered heterogeneous structure of hydrate saturation, permeability, and porosity simultaneously, was constructed to investigate the production characteristics from layered hydrate reservoirs. Based on the validated model, the effects of the placement of production interval on production performance were investigated. The modeling results indicate that the dissociation zone is strongly affected by the vertical reservoir's heterogeneous structure and shows a unique dissociation front. The beneficial production interval scheme should consider the reservoir conditions with high permeability and high hydrate saturation. Consequently, the identification of the favorable hydrate deposits is significantly important to realize commercial production in the future.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Multiphase Flow Behavior of Layered Methane Hydrate Reservoir Induced by Gas Production

Yuan¹,

Xu²,

Xin³

et al. 2017

Geofluids

View full text Add to dashboard Cite

show abstract

Geomechanical Aspects

Klar¹,

Uchida²

2018

Gas Hydrates 2

View full text Add to dashboard Cite

Applications of Zeolites to C1 Chemistry: Recent Advances, Challenges, and Opportunities

2020

View full text Add to dashboard Cite

However, due to growing concerns regarding crude oil depletion and increasing environmental requirements, finding abundant fossil hydrocarbons with high H 2 /C ratios as well as alternative carbon resources has become crucial to maintaining sustainable, environmentally benign systems that can aid human development. [2] Thus, one-carbon (C1) chemistry, which is the chemistry of C1 molecules that can be derived from sources other than fossil hydrocarbons, including carbon monoxide (CO), carbon dioxide (CO 2), methane (CH 4), methanol (CH 3 OH), and formic acid (HCOOH), has emerged and plays important roles in the energy supply and high-value chemical preparation. [1,3] These C1 resources can be obtained from natural gas, shale gas, coal, biomass, solid wastes, and CO 2 emissions. [3a,4] Extensive studies have been dedicated to the catalytic conversion of C1 molecules, including production of dimethyl ether (DME) and liquid fuels from syngas (a mixture of CO and H 2); production of methanol, light olefins, and even aromatics from CH 4 ; and production of hydrogen from HCOOH. [5] All of these transformations require metallic catalytic species such as single atoms; clusters; or oxides, carbides, or alloy particles (e.g., Rh-, AuPd-, Fe 3 O 4-, and Fe 5 C 2-based catalysts). However, these isolated metallic species suffer from severe sintering due to a lack of confinement effects from supports, which leads to poor catalytic stability and decreased selectivities toward their target products. The efficient production of a specific range of hydrocarbons or oxygenates remains a difficult scientific and technical challenge. Overcoming product selectivity limitations and improving catalyst stabilities via catalyst designs are important areas of research. Zeolites are an important class of shape-selective catalysts with uniform micropores, tunable acidities, and high thermal and hydrothermal stabilities. Over the past decade, they have gained broad popularity and been applied to various industrially important catalytic processes. [6] In particular, the design and development of zeolite-based mono-, bi-, and multifunctional catalysts that combine the advantages of zeolites with those of metallic catalytic species have boosted the application of zeolites to C1 chemistry. As shown in Figure 1, value-added hydrocarbons and oxygenates can be produced from C1 molecules via various catalytic routes over zeolite-based catalysts. By May of 2020, the Structure Commission of the International C1 chemistry, which is the catalytic transformation of C1 molecules including CO, CO 2 , CH 4 , CH 3 OH, and HCOOH, plays an important role in providing energy and chemical supplies while meeting environmental requirements. Zeolites are highly efficient solid catalysts used in the chemical industry. The design and development of zeolite-based mono-, bi-, and multifunctional catalysts has led to a booming application of zeolite-based catalysts to C1 chemistry. Combining the advantages of zeolites and metallic catalytic species has promoted the catal...

show abstract

Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production

Cited by 544 publications

References 38 publications

Multiphase Flow Behavior of Layered Methane Hydrate Reservoir Induced by Gas Production

Multiphase Flow Behavior of Layered Methane Hydrate Reservoir Induced by Gas Production

Geomechanical Aspects

Applications of Zeolites to C1 Chemistry: Recent Advances, Challenges, and Opportunities

Contact Info

Product

Resources

About