Title:
METHOD OF PREPARING AIR FOAM STABILIZING LIQUID AND METHOD OF AIR FOAM DRILLING WORK
Document Type and Number:
WIPO Patent Application WO/2009/057367
Kind Code:
A1
Abstract:
Control indexes on drilling work with respect to an air foam stabilizing liquid
are elucidated which involves stabilization and regulation of air foam quantity
and water or cement milk quantity on the basis of the following indexes:
defoaming water content ratio (Wmin) being the minimum water content ratio at
which when air foam is added to soil under drilling, defoaming would not occur;
separation water content ratio (Wsep) being the maximum water content
ratio at which any separation would not occur in the air foam stabilizing liquid;
minimum air foam addition ratio (Qmin) exhibiting the minimum air
foam addition amount from the viewpoint of fluidity required for drilling, and
maximum air foam addition ratio (Qmax) exhibiting the maximum air
foam addition amount for obtaining the requisite density of the air foam stabilizing
liquid as the minimum density required for drilling. There is provided a method
of preparing an air foam stabilizing liquid on the basis of these indexes.
Inventors:
AKAGI HIROKAZU (JP)
KONDO YOSHIMASA
IMAI KINJI (JP)
KONDO YOSHIMASA
IMAI KINJI (JP)
Application Number:
PCT/JP2008/064571
Publication Date:
May 07, 2009
Filing Date:
August 07, 2008
Export Citation:
Assignee:
UNIV WASEDA (JP)
MAGUMA CO LTD (JP)
TAIYO KISO KOGYO CO LTD (JP)
AKAGI HIROKAZU (JP)
KONDO YOSHIMASA
IMAI KINJI (JP)
MAGUMA CO LTD (JP)
TAIYO KISO KOGYO CO LTD (JP)
AKAGI HIROKAZU (JP)
KONDO YOSHIMASA
IMAI KINJI (JP)
International Classes:
E02D5/20; E21D9/06
Foreign References:
| JPS63312418A | 1988-12-20 | |||
| JP2001329530A | 2001-11-30 | |||
| JP2006045877A | 2006-02-16 | |||
| JP2007002168A | 2007-01-11 | |||
| JPH05202693A | 1993-08-10 | |||
| JP3124368B2 | 2001-01-15 | |||
| JP2768104B2 | 1998-06-25 | |||
| JP3725750B2 | 2005-12-14 |
Other References:
HIROKAZU AKAGI: "Kiho o Riyo shita Chichu Renzokukabe Kussakuyo Anteieki no Kaihatsu to Cost Hyoka", KISOKO, vol. 31, no. 7, 15 July 2003 (2003-07-15), pages 22 - 25, XP008134322
"Proceedings of the Japan National Conference on Geotechnical Engineering, The Japanese Geotechnical Society, 2002.07", article HIROKAZU AKAGI ET AL.: "Kihozai o Mochiita Jiban Kussakuyo Anteieki no Koheki Anteika Kiko", pages: 1523 - 1524, XP008134323
See also references of EP 2208826A4
"Proceedings of the Japan National Conference on Geotechnical Engineering, The Japanese Geotechnical Society, 2002.07", article HIROKAZU AKAGI ET AL.: "Kihozai o Mochiita Jiban Kussakuyo Anteieki no Koheki Anteika Kiko", pages: 1523 - 1524, XP008134323
See also references of EP 2208826A4
Attorney, Agent or Firm:
NISHIZAWA, Toshio (3-14 Kudan-kita 4-chom, Chiyoda-ku Tokyo 73, JP)
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