公开(公告)号：CA2744842A1

公开(公告)日：2008-10-04

申请号：CA2744842

申请日：2008-03-31

Applicant: WEATHERFORD LAMB

Inventor： NOSKE JOE ,  IBLINGS DAVID ,  PAVEL DAVID ,  BRUNNERT DAVID J ,  SMITH PAUL ,  GRAYSON MICHAEL BRIAN

IPC: E21B34/06 ,  E21B34/14

Abstract: Methods and apparatus enable reliable and improved isolation between two portions of a bore extending through a casing string disposed in a borehole. A downhole deployment valve (DDV) may provide the isolation utilizing a valve member such as a flapper that is disposed in a housing of the DDV and is designed to close against a seat within the housing. The DDV includes an operating mechanism for opening/closing the DDV. In use, pressure in one portion of a well that is in fluid communication with a well surface may be bled off and open at well surface while maintaining pressure in another portion of the casing string beyond the DDV.

公开(公告)号：CA2627838C

公开(公告)日：2011-09-20

申请号：CA2627838

申请日：2008-03-31

Applicant: WEATHERFORD LAMB

Inventor： NOSKE JOE ,  IBLINGS DAVID ,  PAVEL DAVID ,  BRUNNERT DAVID J ,  SMITH PAUL ,  GRAYSON MICHAEL BRIAN

IPC: E21B34/06 ,  E21B34/14

Abstract: Methods and apparatus enable reliable and improved isolation between two portions of a bore extending through a casing string disposed in a borehole. A downhole deployment valve (DDV) may provide the isolation utilizing a valve member such as a flapper that is disposed in a housing of the DDV and is designed to close against a seat within the housing. The DDV includes an operating mechanism for opening/closing the DDV. In use, pressure in one portion of a well that is in fluid communication with a well surface may be bled off and open at well surface while maintaining pressure in another portion of the casing string beyond the DDV.

公开(公告)号：SA515361005B1

公开(公告)日：2019-06-02

申请号：SA515361005

申请日：2015-09-07

Applicant: WEATHERFORD/LAMB INC

Inventor： ZIMMERMAN PATRICK ,  SMITH PAUL ,  GOODMAN BRANDON ,  HARRALL SIMON ,  PARKER CHARLES ,  DERBY MICHAEL

Abstract: يتعلقالاختراعبجهازوطريقةللتحكمبمعدلالتمددنصفالقطريلعنصرسدقابلللانضغاطعلىرازمةعلىطولاتجاهعنصرالسد. ويمكن،منخلالتغييرمعدلانضغاطالعنصر،أنيتمكذلكالتحكمبالتمددنصفالقطريللأجزاءالمرافقةللعنصر. وبالإضافةإلىذلك،يمكنأيضاًالتحكمبمعدلالتمددنصفالقطريمنخلالالتحكمباتجاهومقدارالتمددنصفالقطريباتجاهطولالسدادوذلكمنخلالتقويةأجزاءمعينةلعنصرالسدبينمايتمخفضجسوءةباقيالأجزاء. انظرالشكل 3ب.

公开(公告)号：CA2744842C

公开(公告)日：2017-02-07

申请号：CA2744842

申请日：2008-03-31

Applicant: WEATHERFORD/LAMB INC

Inventor： NOSKE JOE ,  IBLINGS DAVID ,  PAVEL DAVID ,  BRUNNERT DAVID J ,  SMITH PAUL ,  GRAYSON MICHAEL BRIAN

IPC: E21B34/06 ,  E21B34/14

Abstract: Methods and apparatus enable reliable and improved isolation between two portions of a bore extending through a casing string disposed in a borehole. A downhole deployment valve (DDV) may provide the isolation utilizing a valve member such as a flapper that is disposed in a housing of the DDV and is designed to close against a seat within the housing. The DDV includes an operating mechanism for opening/closing the DDV. In use, pressure in one portion of a well that is in fluid communication with a well surface may be bled off and open at well surface while maintaining pressure in another portion of the casing string beyond the DDV.

公开(公告)号：CA2627838A1

公开(公告)日：2008-10-04

申请号：CA2627838

申请日：2008-03-31

Applicant: WEATHERFORD LAMB

Inventor： SMITH PAUL ,  GRAYSON MICHAEL BRIAN ,  BRUNNERT DAVID J ,  PAVEL DAVID ,  NOSKE JOE ,  IBLINGS DAVID

IPC: E21B34/06 ,  E21B34/14

Abstract: Methods and apparatus enable reliable and improved isolation between two portions of a bore extending through a casing string disposed in a borehole. A downhole deployment valve (DDV) may provide the isolation utilizing a valve member such as a flapper that is disposed in a housing of the DDV and is designed t o close against a seat within the housing. The DDV includes an operating mechanism f or opening/closing the DDV. In use, pressure in one portion of a well that is i n fluid communication with a well surface may be bled off and open at well surface while maintaining pressure in another portion of the casing string beyond the DDV.