公开(公告)号：US20170234454A1

公开(公告)日：2017-08-17

申请号：US15044950

申请日：2016-02-16

Applicant: BAKER HUGHES INCORPORATED

Inventor： Wade A. Miller ,  Michael L. Hair ,  Leonard Medill

IPC: F16K37/00

CPC classification number: F16K37/0016 ,  F16K31/122 ,  F16K37/0041

Abstract: A local position indicating device for a subsea isolation valve that has no other visual signals of its position integrates to the hydraulic actuation system for the isolation valve. Three way valves, connected to an operating control line and a force closed balance line leading to opposed ends of an operating piston, are located by the isolation valve and redirected by a diver or ROV, to locally operate the valve. The balance line has a piston that is displaced with fluid pushed by the operating piston when the isolation valve is opened with hydraulic pressure in the operating control line local connection. The piston connected to the balance line moves an indicator out of its housing for the local indication that the isolation valve is open. Displaced fluid from movement of the piston in the position indicator moves a floating piston to keep seawater away from the indicating piston.

公开(公告)号：US20180209246A1

公开(公告)日：2018-07-26

申请号：US15415327

申请日：2017-01-25

Applicant: BAKER HUGHES INCORPORATED

Inventor： Wade A. Miller ,  John E. Burris

IPC: E21B34/14 ,  E21B34/10

CPC classification number: E21B34/14 ,  E21B23/006 ,  E21B34/10 ,  E21B2034/005

Abstract: A safety valve features a flow tube operated flapper for the normal open and closed positions that can be obtained with one or two control lines to a principal operating piston. Pressure applied to the piston moves the flow tube to rotate the flapper open behind the flow tube. Release of pressure to the principal piston allows a closure spring to return the flow tube up to let the flapper close. A secondary piston can drive the flow tube with applied pressure through a control line. Cycling the applied pressure in combination with an indexing mechanism allows the flapper to be locked open and then released to normal operation. The pistons act as backup for each other as they both drive the flow tube. The flow tube has a clearance fit to the body in the locked open position to exclude debris from the flapper.

公开(公告)号：US20170261120A1

公开(公告)日：2017-09-14

申请号：US15066892

申请日：2016-03-10

Applicant: BAKER HUGHES INCORPORATED

Inventor： Wade A. Miller ,  John E. Burris ,  Michael L. Hair

IPC: F16K31/122 ,  E21B43/12 ,  E21B34/10

CPC classification number: F16K31/1223 ,  E21B34/04 ,  E21B34/10 ,  E21B43/12 ,  E21B2034/005

Abstract: The annular space surrounding a flow tube in a subsurface safety valve is sealingly isolated at opposed ends of the flow tube and pressure compensated to the tubing pressure. The subsurface safety valve is inserted and aligned in an outer housing so that hydraulic operating connections are sealingly aligned with opposite hand split ring seals that are properly compressed when the safety valve is secured in its surrounding housing. The assembly is then able to meet high pressure, heavy debris, and marine environment service requirements for subsea conditions with minimal reconfiguration for what would otherwise serve as a borehole subsurface safety valve.

公开(公告)号：US09810343B2

公开(公告)日：2017-11-07

申请号：US15066892

申请日：2016-03-10

Applicant: BAKER HUGHES INCORPORATED

Inventor： Wade A. Miller ,  John E. Burris ,  Michael L. Hair

IPC: E21B34/10 ,  E21B43/12 ,  F16K31/122 ,  E21B34/00

CPC classification number: F16K31/1223 ,  E21B34/04 ,  E21B34/10 ,  E21B43/12 ,  E21B2034/005

Abstract: The annular space surrounding a flow tube in a subsurface safety valve is sealingly isolated at opposed ends of the flow tube and pressure compensated to the tubing pressure. The subsurface safety valve is inserted and aligned in an outer housing so that hydraulic operating connections are sealingly aligned with opposite hand split ring seals that are properly compressed when the safety valve is secured in its surrounding housing. The assembly is then able to meet high pressure, heavy debris, and marine environment service requirements for subsea conditions with minimal reconfiguration for what would otherwise serve as a borehole subsurface safety valve.