NEW DEVICE FOR THE STORAGE AND USE OF HYDRAULIC AND/OR PNEUMATIC POWER, PARTICULARLY FOR OPERATION OF SUBMERGED WELL HEADS

• US 3,743,013 A
• Filed: 02/17/1971
• Issued: 07/03/1973
• Est. Priority Date: 02/25/1970
• Status: Expired due to Term

• Current Assignee: Jacques Harbonn
• Original Assignee: Jacques Harbonn
• Inventors: Harbonn, Jacques
• Primary Examiner(s): McGlynn, Joseph H.
• Assistant Examiner(s): Favreau, Richard E.
• Application Number:
  US05/116,134
• Time in Patent Office: 867 Days
• Field of Search: 166/.5,.6 175/5-10 60/51
• US Class Current: 166/368
• CPC Class Codes: E21B 33/0355 Control systems, e.g. hydraulic, pneumatic, electric, acoustic, for submerged well heads
• CPC Class Codes: F15B 1/02 Installations or systems with accumulators

Abstract

Device for energizing operating members of a submerged installation such as a well head, comprising storage means for a pressurized working fluid, circuit means in communication with said storage means for actuating said operating members by action of the working fluid passing therethrough, and means for pressurizing the working fluid in said storage means, actuated by a pressurized auxiliary fluid such as the drilling fluid.

Claims

1. A device for the storage and use of the power of a pressurized working fluid, comprising at least one tank containing said working fluid, means for pressurizing said working fluid in said tank and means for the storage and use of said pressurized working fluid connected to said tank, said means for pressurizing the working fluid being incorporated within said tank and being actuated by a pressurized auxiliary fluid.

2. A device for the storage and use of the power of a pressurized working fluid, associated with a submerged drilling well head, comprising at least one tank containing said working fluid, means for pressurizing said fluid in said tank and means for the storage and use of said pressurized fluid connected to said tank, said means for pressurizing the working fluid being actuated by a pressurized auxiliary fluid, said auxiliary fluid being the drilling fluid.

3. A device for the storage and use of the power of a pressurized working fluid, forming part of the equipment of a submerged drilling well head provided with drilling mud circulation lines, said device comprising at least one tank containing said working fluid, means for pressurizing said fluid in said tank and means for the storage and use of said pressurized fluid, connected to said tank, wherein said means for pressurizing the working fluid are connected to at least one drilling mud circulation line so as to be actuated by the pressure of said mud.

4. A device according to claim 3, wherein said means for pressurizing the working fluid are connected to at least one drilling mud feeding line.

5. A device according to claim 3, wherein said means for pressurizing the working fluid are connected to at least one return line for the drilling mud.

6. A device for the storage and use of the power of a pressurized working fluid, comprising at least one tank containing said working fluid, means for pressurizing said fluid in said tank and means for the storage and use of said pressurized fluid connected to said tank, said means for pressurizing the working fluid being actuated by a pressurized auxiliary fluid, the tank being of cylindrical shape and provided with a floating piston slidable in the tank body, the end parts of said tank being respectively connected to at least one accumulator of pressurized fluid and to fluid pressurizing means, adapted to move said floating piston so as to force the working fluid out from said tank towards said accumulator of pressurized fluid.

7. A device according to claim 6 wherein said fluid pressurizing means are formed of a piston, provided with a push-rod, slidable in a chamber surmounting said tank, said piston being displaced by the action of said auxiliary pressurized fluid and against the antagonistic action of repelling means, so as to produce, through the intermediary of the push-rod, the displacement of said floating piston in the direction resulting in the passages of the working Fluid from the tank to the hydraulic accumulator, said chamber being connected to a line for the feed of auxiliary fluid and to a discharge line, said lines being controlled by at least one valve which obstructs said discharge line and opens said fluid feeding line in response to an inner pressure of the accumulator lower than a first predetermined value (P min) and which obstructs said auxiliary fluid feeding line and opens said discharge line in response to a pressure in the accumulator at last equal to a second predetermined value (P max).