Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Sumio Sakuma"'
Publikováno v:
Journal of Volcanology and Geothermal Research. 175:20-27
The Unzen Scientific Drilling Project was initiated in 1999 to investigate a magma conduit that had recently fed a volcanic eruption. The conduit hole, USDP-4, was drilled to 810 m in 2003. In 2004, the hole was extended with intention of reaching th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6855884e61957ec4dd927f682283cf69
https://doi.org/10.1016/j.jvolgeores.2008.03.034
https://doi.org/10.1016/j.jvolgeores.2008.03.034
Publikováno v:
Journal of Volcanology and Geothermal Research. 175:1-12
Borehole USDP-4 was drilled into the Unzen volcanic conduit 9 years after its last eruption. The sub-surface mechanism of eruption at Unzen Volcano was investigated by taking cores and by geophysical logging. The drilling operations were carried out
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48c95230a53625dcbe90ccdc35125e8a
https://doi.org/10.1016/j.jvolgeores.2008.03.039
https://doi.org/10.1016/j.jvolgeores.2008.03.039
Autor:
Masaru Kurokawa, Setsuya Nakada, Hideo Hoshizumi, Kozo Uto, Yoshihiko Goto, Taketo Shimano, Takeshi Sugimoto, Sumio Sakuma, Mitsuhiro Yoshimoto
Publikováno v:
Journal of Volcanology and Geothermal Research. 175:45-59
Unzen, western Kyushu, Japan, is an andesitic to dacitic, polygenetic volcano that reaches an elevation of 1486 m above sea level. A 1996-m-long hole has been drilled on a slanted trajectory passing beneath the volcano, penetrating the conduit zone o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51df3633201d587686a542eafa0b0e4f
https://doi.org/10.1016/j.jvolgeores.2008.03.041
https://doi.org/10.1016/j.jvolgeores.2008.03.041
Autor:
Sumio Sakuma, Seiji Saito
Publikováno v:
Journal of the Japanese Association for Petroleum Technology. 67:442-449
Drilling problems that occurred during the last 15 years within JMC-Geothermal group while drilling geothermal wells, are reviewed. BHA parting, stuck BHA, and down-time caused by poorly maintained equipment, are three major problems to be avoided. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c93dec2019b3200d90a14a93dbd51bd3
https://doi.org/10.3720/japt.67.442
https://doi.org/10.3720/japt.67.442
Autor:
Saito Seiji, Sumio Sakuma
Publikováno v:
SPE Drilling & Completion. 15:152-161
Summary The Japanese government-funded geothermal exploration Well WD-1A reached 3729 m at total depth, where the bottomhole static temperature is more than 500°C. A trajectory correction run was carried out with a positive displacement motor and me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7112f5936b799a199a9149f2fde31a09
https://doi.org/10.2118/65104-pa
https://doi.org/10.2118/65104-pa
Autor:
Seiji Saito, Sumio Sakuma
Publikováno v:
Journal of the Japanese Association for Petroleum Technology. 65:403-416
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d77d3cfa5b7bb7e48112e660c08906c
https://doi.org/10.3720/japt.65.403
https://doi.org/10.3720/japt.65.403
Publikováno v:
Geothermics. 27:573-590
The Japanese government-funded geothermal exploration well WD-1A reached a depth of 3729 m in a Quaternary granite, where the bottom-hole static temperature is more than 500°C. This is the highest-temperature formation ever drilled at this depth in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bf307206a9ba4af01e59cf73555def8
https://doi.org/10.1016/s0375-6505(98)00034-0
https://doi.org/10.1016/s0375-6505(98)00034-0
Autor:
Hideo Aiba, Shinji Kutsukake, Kihachiro Shimano, Haruo Nakabayashi, Sumio Sakuma, Akio Abe, Takeshi Asao
Publikováno v:
Kanzo. 26:369-375
肝原発悪性間葉腫の1剖検例を報告する.68歳,男性,心窩部の腫瘤を主訴として入院.肝シンチグラムで左葉を中心とした巨大な陰影欠損,CTで肝左葉に馬蹄形の低吸収域を認めた.血液検査で
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ddcf845229959070902b81a1916a566
https://doi.org/10.2957/kanzo.26.369
https://doi.org/10.2957/kanzo.26.369
Publikováno v:
Scientific Drilling; Sep2005, Issue 1, p18-22, 5p