Geochemical Study of Brine from Oil and Gas Fields in Japan

Sudo, Y.

doi:10.3720/japt.32.286

Cited by 10 publications

(3 citation statements)

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“…The chemical composition of the formation water that was associated with methane production revealed a high content of iodine, bicarbonate and sodium chloride, and a negligible amount of sulfate, all of which are characteristic of the oil and gas field waters in Japan (Sudo 1967). The stable carbon isotope ratios of methane obtained from MOB4 were the same range of the data previously reported (Igari and Sakata 1989;Kaneko et al 2002), indicating that it was of biogenic origin.…”

Section: Discussionmentioning

confidence: 74%

“…The formation water samples MOB4 and MOB7 were obtained from the depth of 347 to 795 m and 619 to 1132 m, respectively. These reservoir rocks are turbidite sandstones of the Otadai to upper part of Kiwada formations, deposited around 1 Ma (million years ago) in bathyal environments, and filled with ancient seawater (Sudo 1967;Kunisue et al 2002).…”

Section: Sampling Site and Formation Watermentioning

confidence: 99%

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Methanogen Diversity in Deep Subsurface Gas-Associated Water at the Minami-Kanto Gas Field in Japan

Mochimaru

Uchiyama

Yoshioka

et al. 2007

Geomicrobiology Journal

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Methanogen diversity and methanogenic potential in formation water obtained from the Minami-kanto gas field in Japan were investigated by using 16S rRNA gene libraries and culture-based enrichment methods, respectively. This region is the largest gas field that produces natural gases of dissolved-in-water type in Japan. Although the microbial population density was below statistical quantification limits (1 × 10 4 cells ml −1 ), autofluorescent coccoid and rod-shaped cells indicative of methanogens were observed. The represented genera in the archaeal 16S rRNA genes libraries were comprised of Methanobacterium, Methanospirillum, Methanocalculus, Methanococcus, Methanolobus and Methanosaeta. The dominant archaeal sequences were related to the hydrogenotrophic methanogens in the genus Methanobacterium. Of the methanogenic substrates tested using the formation water-based medium, H 2 -CO 2 yielded the highest methane production. These results strongly suggest that the formation water of the Pleistocene strata in the gas fields harbor viable hydrogenotrophic methanogens and have possibly been making a contribution to ongoing methanogenesis.

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Section: Discussionmentioning

confidence: 74%

Section: Sampling Site and Formation Watermentioning

confidence: 99%

Methanogen Diversity in Deep Subsurface Gas-Associated Water at the Minami-Kanto Gas Field in Japan

Mochimaru

Uchiyama

Yoshioka

et al. 2007

Geomicrobiology Journal

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“…This natural gas field is a dissolved-in-water type, and analyses of the stable carbon ( 13 C/ 12 C) and deuterium/hydrogen (D/H) isotopic composition of the methane and the ratio of methane to ethane and propane suggest that the methane is biogenic in origin (Igari & Sakata, 1989). The reservoir rocks are turbidite sandstones deposited around 1 Ma (million years ago) in a bathyal environment, being filled with ancient seawater (Sudo, 1967;Kunisue et al, 2002). The chemical composition of the formation water was conspicuously different from that of common seawater, i.e.…”

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confidence: 99%

Methanolobus profundi sp. nov., a methylotrophic methanogen isolated from deep subsurface sediments in a natural gas field

Mochimaru

Tamaki²,

Hanada³

et al. 2009

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLO

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Methanolobus profundi sp. nov., a methylotrophic methanogen isolated from deep subsurface sediments in a natural gas field (Kadam et al., 1994;Liu et al., 1990;Oremland & Boone, 1994), unlike the other two species, Methanolobus tindarius and Methanolobus vulcani (Konig & Stetter, 1982;Kadam & Boone, 1995). In this study, a slightly halophilic, methylotrophic methanogen, designated strain MobM T , was isolated from subsurface sediments below 350 m in the Minami-Kanto Gas Field (Mobara, Chiba prefecture, Japan). This natural gas field is a dissolved-in-water type, and analyses of the stable carbon ( 13 C/ 12 C) and deuterium/hydrogen (D/H) isotopic composition of the methane and the ratio of methane to ethane and propane suggest that the methane is biogenic in origin (Igari & Sakata, 1989). The reservoir rocks are turbidite sandstones deposited around 1 Ma (million years ago) in a bathyal environment, being filled with ancient seawater (Sudo, 1967;Kunisue et al., 2002). The chemical composition of the formation water was conspicuously different from that of common seawater, i.e. it contained large amounts of iodine, bicarbonate and ammonia along with negligible amounts of sulfate. Culture-independent analysis of archaeal 16S rRNA gene sequences revealed that the methanogenic community residing in the formation water is diverse and includes close relatives of members of the genera Methanolobus, Methanohalophilus, Methanosaeta, Methanocalculus, Methanobacterium and Methanococcus (Mochimaru et al., 2007). Using a culture-The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain MobM T is AB370245.A supplementary figure showing the effects of variations in temperature and salinity on the specific growth rate of strain MobM T is available with the online version of this paper.

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Coastal aquifer system in late Pleistocene to Holocene deposits at Horonobe in Hokkaido, Japan

et al. 2014

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Geochemical Study of Brine from Oil and Gas Fields in Japan

Cited by 10 publications

References 0 publications

Methanogen Diversity in Deep Subsurface Gas-Associated Water at the Minami-Kanto Gas Field in Japan

Methanogen Diversity in Deep Subsurface Gas-Associated Water at the Minami-Kanto Gas Field in Japan

Methanolobus profundi sp. nov., a methylotrophic methanogen isolated from deep subsurface sediments in a natural gas field

Coastal aquifer system in late Pleistocene to Holocene deposits at Horonobe in Hokkaido, Japan

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