Title:
GAS LIFT SYSTEM AND GAS LIFT METHOD
Document Type and Number:
WIPO Patent Application WO/2013/021840
Kind Code:
A1
Abstract:
By providing a pressurizing chamber (21) in the upper-end section of a riser tube (11) in a gas lift system (10), and pressurizing the interior of the upper section of the riser tube (11), it is possible to suppress an increase in the proportion of the volume of gas in a fluid mixture rising inside the riser tube (11) in a shallow-water region. As a result, it is possible to: suppress the expansion of gas and air bubbles by guiding the same into the high-pressure, pressurizing chamber (21), without opening the upper end of the riser tube (11) to the atmosphere; and more evenly distribute the gas inside the riser tube (11) overall by providing a degassing device (14) for degassing centrifugally separated gas even in the shallow-water region of the riser tube (11). As a result, it is possible to provide a gas lift system (10) and gas lift method which can be efficiently used even in a deep-water region.
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Inventors:
NAKAMURA TAKUJU (JP)
KAWASE MASAKI (JP)
ITOSHIMA AKIRA (JP)
KAWASE MASAKI (JP)
ITOSHIMA AKIRA (JP)
Application Number:
PCT/JP2012/069168
Publication Date:
February 14, 2013
Filing Date:
July 27, 2012
Export Citation:
Assignee:
MODEC INC (JP)
NAKAMURA TAKUJU (JP)
KAWASE MASAKI (JP)
ITOSHIMA AKIRA (JP)
NAKAMURA TAKUJU (JP)
KAWASE MASAKI (JP)
ITOSHIMA AKIRA (JP)
International Classes:
B01D19/00; F04F1/18; C02F11/00; E02F3/88; E21C50/00
Foreign References:
| JPS5220409A | 1977-02-16 | |||
| JPH0519600U | 1993-03-12 | |||
| JPH0480000U | 1992-07-13 | |||
| JPS63280900A | 1988-11-17 | |||
| JP2005291171A | 2005-10-20 |
Other References:
See also references of EP 2743514A4
Attorney, Agent or Firm:
Seiryu Patent Professional Corporation et al. (JP)
Clear stream international patent business corporation (JP)
Clear stream international patent business corporation (JP)
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Claims: