公开(公告)号：CA2510448C

公开(公告)日：2011-11-15

申请号：CA2510448

申请日：2005-06-21

Applicant: WEATHERFORD LAMB

Inventor： HASHEM GHAZI J ,  SETTERBERG JOHN R JR ,  RING LEV M

IPC: F16L15/06 ,  E21B17/02 ,  E21B17/042 ,  E21B43/10

Abstract: An expandable threaded connection between segments of expandable tubulars that allows the threaded tubular connection to withstand the stresses and deformations imposed on the connection by the tubular expansion process is disclosed. The present invention is a unique hybrid threaded connection that utilizes two complementary thread segments to form the expandable threaded connection. The first segment of the threaded connection utilizes standard box and pin threads such that the threads on the pin member in the area of the first segment fully engage the mating threads on the box member. The second segment of the threaded connection has the threads machined on the pin member in a manner such that material is removed from the stab flank of the pin threads to reduce the standard width of the pin threads. In contrast to the pin threads of the second segment, the box threads of the second segment are standard thread width and, thus, are the same thread width as the box threads in the first segment. The use of the reduced thread width in the pin threads of the second segment allows for a loose fit between the pin threads of the second segment and the box threads of the second segment. As the threaded connection is expanded, the loose fit between the pin and box threads of the second segment allows radial and axial movement between the pin and box threads of the second segments of the threaded connection without causing disengagement of the threaded connection. The disclosed hybrid threaded connection thus utilizes multiple thread segments in which the second thread segment accommodates the stresses and deformations generated by the radial expansion process while the threads of the first segment maintain the coupling strength and the pressure integrity of the threaded connection.

公开(公告)号：GB2429220A

公开(公告)日：2007-02-21

申请号：GB0615602

申请日：2006-08-07

Applicant: WEATHERFORD LAMB

Inventor： HASHEM GHAZI J ,  HARRALL SIMON JOHN ,  RING LEV M ,  EVANS MERLE EDWARD

IPC: E21B43/10 ,  E21B17/08 ,  F16L15/04

Abstract: An expandable threaded connection between segments of expandable tubulars that provides a high bearing pressure seal at a specific area along the pin 10 and box members 20 is disclosed. The Invention utilizes a groove 90 in a surface of the box member 20 and a corresponding rib 82 on the pin nose 80. The radial expansion of the tubulars causes the pin to become shorter in length, thereby causing the pin nose to retract from the back of the box member. As the pin nose retracts, the rib on the pin nose moves backward until a portion of the rib contacts a portion of the groove in the box member. The point of contact between the rib and the groove creates a metal-to-metal seal between the pin and box members. Since the point of contact between the rib and the groove is a relatively small area, the force acting on the point of contact generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars and, thus, generates a high pressure seal.

公开(公告)号：GB2449804B

公开(公告)日：2009-05-06

申请号：GB0816234

申请日：2006-08-07

Applicant: WEATHERFORD LAMB

Inventor： HASHEM GHAZI J ,  HARRALL SIMON JOHN ,  RING LEV M ,  EVANS MERLE EDWARD

IPC: E21B43/10 ,  E21B17/08 ,  F16L15/04

Abstract: An expandable threaded connection between segments of expandable tubulars that provides a high bearing pressure seal at a specific area along the pin and box members is disclosed. The invention utilizes a “groove” in a surface of the box member and a corresponding “rib” on the pin nose. The radial expansion of the tubulars causes the pin to become shorter in length, thereby causing the pin nose to retract from the back of the box member. As the pin nose retracts, the rib on the pin nose moves backward until a portion of the rib contacts a portion of the groove in the box member. The point of contact between the rib and the groove creates a metal-to-metal seal between the pin and box members. Because the point of contact between the rib and the groove is a relatively small area, the force acting on the point of contact generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars and, thus, generates a high pressure seal.

公开(公告)号：GB2415974B

公开(公告)日：2009-04-08

申请号：GB0511043

申请日：2005-06-01

Applicant: WEATHERFORD LAMB

Inventor： HASHEM GHAZI J ,  RING LEV M ,  SETTERBERG JOHN R JR

IPC: E21B17/042 ,  E21B43/10 ,  F16L15/06

公开(公告)号：GB2449805A

公开(公告)日：2008-12-03

申请号：GB0816235

申请日：2006-08-07

Applicant: WEATHERFORD LAMB

Inventor： HASHEM GHAZI J ,  HARRALL SIMON JOHN ,  RING LEV M ,  EVANS MERLE EDWARD

IPC: E21B43/10 ,  E21B17/08 ,  F16L15/02

Abstract: An expandable threaded connection between segments of expandable tubulars that provides a high bearing pressure seal at a specific area along the pin 10 and box 20 members. The invention utilizes a "groove" 90 in a surface of the box member and a corresponding "rib" 82 on the pin nose. The rib includes an angled wall 84 which mates with an angled wall 92 of the groove. On radial expansion of the tubulars these angled walls are in contact with each other and prevent the pin nose 80 being forced inwardly.

公开(公告)号：CA2757151A1

公开(公告)日：2007-02-11

申请号：CA2757151

申请日：2006-08-09

Applicant: WEATHERFORD LAMB

Inventor： HASHEM GHAZI J ,  HARRALL SIMON J ,  RING LEV M ,  EVANS MERLE E

IPC: E21B17/042 ,  E21B17/08

Abstract: An expandable threaded connection between segments of expandable tubulars that provides a high bearing pressure seal at a specific area along the pin and box members is disclosed. The invention utilizes a "groove" in a surface of the box member and a corresponding "rib" on the pin nose. The radial expansion of the tubulars causes the pin to become shorter in length, thereby causing the pin nose to retract from the back of the box member. As the pin nose retracts, the rib on the pin nose moves backward until a portion of the rib contacts a portion of the groove in the box member. The point of contact between the rib and the groove creates a metal-to-metal seal between the pin and box members. Because the point of contact between the rib and the groove is a relatively small area, the force acting on the point of contact generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars and, thus, generates a high pressure seal.

公开(公告)号：GB2415974A

公开(公告)日：2006-01-11

申请号：GB0511043

申请日：2005-06-01

Applicant: WEATHERFORD LAMB

Inventor： HASHEM GHAZI J ,  RING LEV M ,  SETTERBERG JOHN R JR

IPC: E21B17/042 ,  E21B43/10 ,  F16L15/06

Abstract: The disclosed expandable hybrid threaded connection between segments of expandable tubulars allows the threaded tubular connection to withstand the stresses and deformations imposed on the connection by the tubular expansion process. The connection comprises at least two threaded segments, the first being a standard box 20 and pin 10 arrangement where the threads 14 on the pin 10 fully engage the mating threads 22 on the box 20 member, and the second segment has material removed from the stab flank of the pin threads 12 to reduce their width thus allowing a loose fit between the pin threads 12 and the second segment of the box threads. As the connection is expanded the loose fit between the threads of the second segment allows radial and axial movement between the threads without causing disengagement of the threaded connection while the threads of the first segment maintain the coupling strength and pressure integrity of the connection. Further disclosed are a sealing ring 35 in a groove within the first segment and a protective sleeve 55 on the external shoulder of the pin 10 member.

公开(公告)号：CA2881130C

公开(公告)日：2016-08-30

申请号：CA2881130

申请日：2006-08-09

Applicant: WEATHERFORD/LAMB INC

Inventor： HASHEM GHAZI J ,  HARRALL SIMON J ,  RING LEV M ,  EVANS MERLE E

IPC: E21B17/042 ,  E21B17/08

Abstract: An expandable threaded connection between segments of expandable tubulars that provides a high bearing pressure seal at a specific area along the pin and box members is disclosed. The invention utilizes first and second "grooves" in a surface of the box member and corresponding first and second "ribs" on the pin nose. The radial expansion of the tubulars causes the pin to become shorter in length, thereby causing the pin nose to retract from the back of the box member. As the pin nose retracts, a high bearing pressure, metal-to-metal seal, is formed between elements of the mating tubulars.

公开(公告)号：CA2757151C

公开(公告)日：2015-06-30

申请号：CA2757151

申请日：2006-08-09

Applicant: WEATHERFORD LAMB

Inventor： HASHEM GHAZI J ,  HARRALL SIMON J ,  RING LEV M ,  EVANS MERLE E

IPC: E21B17/042 ,  E21B17/08

Abstract: An expandable threaded connection between segments of expandable tubulars that provides a high bearing pressure seal at a specific area along the pin and box members is disclosed. The invention utilizes a "groove" in a surface of the box member and a corresponding "rib" on the pin nose. The radial expansion of the tubulars causes the pin to become shorter in length, thereby causing the pin nose to retract from the back of the box member. As the pin nose retracts, an axial gap is formed between the pin elements of the mating tubulars.

公开(公告)号：GB2449804A

公开(公告)日：2008-12-03

申请号：GB0816234

申请日：2006-08-07

Applicant: WEATHERFORD LAMB

Inventor： HASHEM GHAZI J ,  HARRALL SIMON JOHN ,  RING LEV M ,  EVANS MERLE EDWARD

IPC: E21B43/10 ,  E21B17/08 ,  F16L15/04

Abstract: An expandable threaded connection between segments of expandable tubulars that provides a high bearing pressure seal at a specific area along the pin 10 and box 20 members is disclosed. The invention utilizes a groove 90 in a surface of the box member and a corresponding rib 82 on the pin nose 80. The radial expansion of the tubulars causes the pin to become shorter in length, thereby causing the pin nose to retract from the back of the box member. As the pin nose retracts, the rib on the pin nose moves backward until a portion of the rib contacts a portion of the groove in the box member. The point of contact between the rib and the groove creates a metal-to-metal seal between the pin and box members. Multiple pins and grooves are present on either of the pin or box member.