Title:
GAS HYDRATE PERCENTAGE MEASURING DEVICE AND THE METHOD OF CONTROLLING THE SAME
Document Type and Number:
WIPO Patent Application WO/2011/121836
Kind Code:
A1
Abstract:
Provided are a gas hydrate percentage measuring device and a method of controlling the same which are capable of measuring a gas hydrate percentage with high accuracy even if source gas exists dissolved in gas hydrate slurry or as gas bubble therein. The method comprises: a first measuring step for measuring an electric conductivity of gas hydrate slurry which passes through a main line (2) at normal time; a start step for closing a first valve (4) and a second valve (5) while opening a third valve (9) when measuring a gas hydrate percentage; a depressurizing step for depressurizing a measuring part (6) by opening a depressurizing valve (8); a second measuring step for measuring an electric conductivity in the measuring part (6) after completion of the depressurization of the measuring part (6); and a calculation step for calculating a gas hydrate percentage based on the electric conductivity of gas hydrate slurry at normal time and the electric conductivity of the measuring part (6) after the depressurization.
Inventors:
MURAYAMA TETSURO (JP)
Application Number:
PCT/JP2010/069729
Publication Date:
October 06, 2011
Filing Date:
November 05, 2010
Export Citation:
Assignee:
MITSUI SHIPBUILDING ENG (JP)
MURAYAMA TETSURO (JP)
MURAYAMA TETSURO (JP)
International Classes:
G01N27/06; C10L3/06
Domestic Patent References:
| WO2008123305A1 | 2008-10-16 |
Foreign References:
| JP2007238715A | 2007-09-20 | |||
| JP2003050221A | 2003-02-21 | |||
| JP2009242734A | 2009-10-22 | |||
| JP2000302701A | 2000-10-31 | |||
| JP2008224378A | 2008-09-25 |
Attorney, Agent or Firm:
OGAWA, Shin-ichi et al. (JP)
Shin-ichi Ogawa (JP)
Shin-ichi Ogawa (JP)
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Claims: