Patent ID: 9664207
Date: 2017-05-30
CPC Classifications: E21B,F15B,Y02E

Claim:
1. A method of safely handling compressed gas in a dual bottle subsea accumulator during service operations comprising: providing a gas bottle for the primary purpose of storing gas which will be compressed to provide accumulated energy, providing a hydraulic bottle with the primary purpose of converting the energy stored in said gas bottle into pressurized hydraulic supply fluid, providing interconnecting plates at a first end and a second end of said gas bottle and said hydraulic bottle with porting to communicate said gas from said gas bottle to said hydraulic bottle, providing a first closure valve in a protected position within said first end of said gas bottle, providing a second closure valve in a protected position within said second end of said gas bottle, expelling a majority of the gas from said hydraulic bottle into said gas bottle, closing said first closure valve and said second closure valve, and removing said interconnecting plates from said gas bottle and said hydraulic bottle, and servicing said hydraulic bottle.