公开(公告)号：DE60133841D1

公开(公告)日：2008-06-12

申请号：DE60133841

申请日：2001-03-12

Applicant: WEATHERFORD LAMB

Inventor： PLUCHEK CLAYTON STANLEY ,  PEDERSEN GERALD DEAN ,  GIROUX RICHARD LEE ,  HAUGEN DAVID MICHAEL ,  SCOTT THAD JOSEPH

IPC: E21B21/10 ,  E21B27/00 ,  E21B33/14 ,  E21B33/16 ,  E21B34/00 ,  E21B37/00 ,  E21B37/10 ,  E21B43/08 ,  E21B43/10 ,  E21B43/38

Abstract: The present invention provides a downhole cementing apparatus (100) run into a borehole on a tubular. The apparatus is constructed on the pipe (110) in such a way that pressure surge during run-in is reduced by allowing fluid to enter the pipe and utilise the fluid pathway of the cement. In one aspect of the invention, an inner member (135) is provided that filters fluid as it enters the fluid pathway. In another aspect of the invention, various methods are provided within the cementing apparatus to loosen and displace sediment in the borehole prior to cementing, and to cause a separation of materials in the borehole by running in a tubular string.

公开(公告)号：CA2571670C

公开(公告)日：2007-12-04

申请号：CA2571670

申请日：2001-03-12

Applicant: WEATHERFORD LAMB

Inventor： PEDERSEN GERALD DEAN ,  HAUGEN DAVID MICHAEL ,  SCOTT THAD JOSEPH ,  GIROUX RICHARD LEE ,  PLUCHEK CLAYTON STANLEY

IPC: E21B33/14 ,  E21B37/00 ,  E21B43/02 ,  E21B43/10

Abstract: The present invention provides a downhole cementing apparatus run into a borehole on a tubular. The apparatus is constructed on the pipe in such a wa y that pressure surge during run-in is reduced by allowing fluid to enter the pipe and utilise the fluid pathway of the cement. In one aspect of the invention, a inner member is provided that filters fluid as it enters the fluid pathway. In another aspect of the invention, various methods are provided within the cementing apparatus to loosen and displace sediment in the borehole prior to cementing.

公开(公告)号：CA2651966A1

公开(公告)日：2007-11-22

申请号：CA2651966

申请日：2007-05-11

Applicant: WEATHERFORD LAMB

Inventor： GIROUX RICHARD LEE ,  ROSENBERG STEVEN M

IPC: E21B33/14 ,  E21B7/20

Abstract: Apparatus and methods are provided for a cementing operation for use with a drilling with casing application. In one embodiment, an apparatus (1) is provided for stage cementing using a full opening stage tool (30). In anothe r embodiment, an apparatus is provided for reverse cementing of the casing.

公开(公告)号：CA2514676C

公开(公告)日：2007-08-07

申请号：CA2514676

申请日：1998-09-14

Applicant: WEATHERFORD LAMB

Inventor： BUDDE PETER ,  GIROUX RICHARD LEE

IPC: E21B33/16 ,  E21B33/13 ,  E21B33/14

Abstract: A plug for use in wellbore operations, which plug is deformable such that, in use, upon fluid pressure reaching a predetermined level, said plug deforms allowing fluid to pass between said plug and a tubular in which said plug is located.

公开(公告)号：DK1508667T3

公开(公告)日：2007-01-02

申请号：DK04105606

申请日：2001-03-20

Applicant: WEATHERFORD LAMB

Inventor： GIROUX RICHARD LEE ,  LUKE MIKE ,  HOFFMAN COREY E ,  NORRIS STEPHEN J

IPC: E21B23/04 ,  E21B27/00 ,  E21B31/20 ,  E21B37/08 ,  E21B43/12

Abstract: The present invention provides a simple debris removal apparatus (200) for use in a wellbore. In one aspect of the invention a modular, interchangeable venturi (210) is provided which can be retrofit into an existing debris bailer having a filter and a debris collection container (225). In another aspect of the invention, a venturi is utilised to create a negative pressure in a wellbore sufficient to actuate a retrieval tool for a downhole device. In yet another aspect of the invention, a combination tool is provided which can evacuate debris in a wellbore, thereby uncovering a downhole device which can then be removed in a single trip. In yet another aspect of the invention, a debris removal apparatus is provided with a method for utilising the apparatus in a wellbore on coiled tubing.

公开(公告)号：NO323035B1

公开(公告)日：2006-12-27

申请号：NO20016299

申请日：2001-12-21

Applicant: WEATHERFORD LAMB

Inventor： BUDDE PETER ,  GIROUX RICHARD LEE

IPC: E21B33/16 ,  E21B21/10 ,  E21B33/05 ,  E21B34/06

公开(公告)号：CA2218106C

公开(公告)日：2005-06-14

申请号：CA2218106

申请日：1996-04-26

Applicant: WEATHERFORD LAMB

Inventor： GIROUX RICHARD LEE ,  BUDDE PETER

IPC: E21B21/10 ,  E21B33/05 ,  E21B33/16 ,  E21B34/06

Abstract: The invention provides a bottom cementing plug (594) which is releasably attached to a top plug (584) by means of a tubular sleeve (550) and shear pins (553). Instead of shear pins a shear ring, which may be segmented, and which is integral wi th the tubular sleeve, may be arranged. The tubular sleeve (550) comprises first openings (565) which are covered by burst plates (570) for allowing cement to pass after having set the plug on the float shoe at the casing bottom. The tubular sleeve (550) ma y comprise second openings (554) covered by burst plates (555) to allow the cementing process to be performed in case that the top plug has been launched together with the bottom plug. The invention further provides a dart launching device, where the darts are arranged in a sleeve coaxially with and radially spaced from the housing of the launchin g device. A fluid diverter is arranged at the top of the launching device for diverting the fluid into the annular space between sleeve and housing in order to prevent pressure overload on the plungers which hold the darts in place before they are launched.

公开(公告)号：NO20024090A

公开(公告)日：2002-10-30

申请号：NO20024090

申请日：2002-08-28

Applicant: WEATHERFORD LAMB

Inventor： GIROUX RICHARD LEE ,  LUKE MIKE ,  HOFFMAN COREY E ,  NORRIS STEVEN J

IPC: E21B23/04 ,  E21B27/00 ,  E21B37/08 ,  E21B43/12 ,  E21B

CPC classification number: E21B23/04 ,  E21B27/00 ,  E21B37/08 ,  E21B43/124

公开(公告)号：NO20023965L

公开(公告)日：2002-10-09

申请号：NO20023965

申请日：2002-08-21

Applicant: WEATHERFORD LAMB

Inventor： PLUCHEK CLAYTON STANLEY ,  PEDERSEN GERALD DEAN ,  GIROUX RICHARD LEE ,  HAUGEN DAVID MICHAEL ,  SCOTT THAD JOSEPH

IPC: E21B21/10 ,  E21B27/00 ,  E21B33/14 ,  E21B33/16 ,  E21B34/00 ,  E21B37/00 ,  E21B37/10 ,  E21B43/08 ,  E21B43/10

Abstract: The present invention provides a downhole cementing apparatus (100) run into a borehole on a tubular. The apparatus is constructed on the pipe (110) in such a way that pressure surge during run-in is reduced by allowing fluid to enter the pipe and utilise the fluid pathway of the cement. In one aspect of the invention, an inner member (135) is provided that filters fluid as it enters the fluid pathway. In another aspect of the invention, various methods are provided within the cementing apparatus to loosen and displace sediment in the borehole prior to cementing, and to cause a separation of materials in the borehole by running in a tubular string.

公开(公告)号：CA2526837A1

公开(公告)日：2001-09-20

申请号：CA2526837

申请日：2001-03-12

Applicant: WEATHERFORD LAMB

Inventor： PEDERSEN GERALD DEAN ,  SCOTT THAD JOSEPH ,  HAUGEN DAVID MICHAEL ,  GIROUX RICHARD LEE ,  PLUCHEK CLAYTON STANLEY

IPC: E21B33/14 ,  E21B37/00 ,  E21B43/02 ,  E21B43/10

Abstract: The present invention provides a downhole cementing apparatus (100) run in to a borehole on a tubular. The apparatus is constructed on the pipe (110) in such a way that pressure surge during run-in is reduced by allowing fluid to enter the pipe and utilise the fluid pathway of the cement. In one aspect of the invention, a inner member (135) is provided that filters fluid as it enters the fluid pathway. In another aspect of the invention, various methods are provided within the cementing apparatus to loosen and displace sediment in the borehole prior to cementing.