公开(公告)号：CA2871925C

公开(公告)日：2016-12-06

申请号：CA2871925

申请日：2014-11-20

Applicant: WEATHERFORD/LAMB INC

Inventor： KING KYLE ALLEN ,  NOSKE JOE ,  MCDOWELL CHRISTOPHER L ,  MICKENS BRIAN A

IPC: E21B47/06 ,  E21B33/124 ,  E21B34/06

Abstract: A differential pressure indicator (DPI) for use with a downhole isolation valve includes a tubular mandrel for assembly as part of a casing string and for receiving a tubular string. The mandrel has a stop shoulder and a piston shoulder. The DPI further includes a tubular housing for assembly as part of the casing string and for receiving the tubular string. The housing is movable relative to the mandrel between an extended position and a retracted position and has a stop shoulder and a piston shoulder. The DPI further includes a hydraulic chamber formed between the piston shoulders and a coupling in communication with the hydraulic chamber and for connection to a sensing line. The housing is movable relative to the mandrel and to the extended position in response to tension exerted on the DPI.

公开(公告)号：CA2916019C

公开(公告)日：2018-02-20

申请号：CA2916019

申请日：2014-06-26

Applicant: WEATHERFORD/LAMB INC

Inventor： MCDOWELL CHRISTOPHER L ,  NOSKE JOE ,  KING KYLE ALLEN ,  HARRALL SIMON J

IPC: E21B34/10 ,  E21B34/14

Abstract: An isolation valve for use in a wellbore includes: a tubular housing; an upper flapper disposed in the housing and pivotable relative thereto between an open position and a closed position; an upper piston operable to open or close the upper flapper; a lower flapper disposed in the housing and pivotable relative thereto between an open position and a closed position; a lower piston operable to open the lower flapper; an opener passage in fluid communication with the pistons and an opener hydraulic coupling; and a closer passage in fluid communication with the pistons and a closer hydraulic coupling.

公开(公告)号：MX386850B

公开(公告)日：2025-03-19

申请号：MX2019012156

申请日：2015-12-18

Applicant: WEATHERFORD LAMB INC

Inventor： MCDOWELL CHRISTOPHER L ,  NOSKE JOE ,  KING KYLE ALLEN ,  HARRALL SIMON J

IPC: E21B21/10 ,  E21B34/10 ,  E21B34/14

Abstract: Una válvula de aislamiento para uso en un pozo incluye: una carcasa tubular, una charnela superior colocada en la carcasa y giratoria con relación a la misma entre una posición abierta y una posición cerrada, un pistón superior que opera para abrir o cerrar la charnela superior; una charnela inferior colocada en la carcasa y giratoria con relación a la misma entre una posición abierta y una posición cerrada; un pistón inferior que opera para abrir la charnela inferior; un paso de abridora en comunicación de fluido con los pistones y un acoplamiento hidráulico de abridora y un paso cerrador en comunicación de fluido con los pistones y un acoplamiento hidráulico del cerrador.