US2010252331A1PendingUtilityA1

Methods for forming boring shoes for wellbore casing, and boring shoes and intermediate structures formed by such methods

38
Individually held — no corporate assignee on recordPriority: Apr 1, 2009Filed: Apr 1, 2009Published: Oct 7, 2010
Est. expiryApr 1, 2029(~2.7 yrs left)· nominal 20-yr term from priority
Inventors:Angela D. HighChristopher C. BeuershausenAdam Richard Williams
E21B 17/14E21B 17/042E02D 5/72
38
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

Methods of attaching a crown of a boring shoe to a casing section include attaching an adaptable shank to a crown, and machining the adaptable shank to configure an end thereof for attachment to a casing section after attaching the adaptable shank to the crown. Additional methods include welding an end of an adaptable shank to a crown to form a boring shoe, selecting the adaptable shank to have an average wall thickness greater than about five percent (5%) of a maximum diameter of the crown, and configuring an opposite end of the adaptable shank for attachment to a particular type of casing section after welding the shank to the crown. Boring shoes have an adaptable shank attached to a crown, wherein the shank comprises a generally cylindrical wall having an average wall thickness greater than about five percent (5%) of a maximum diameter of the crown.

Claims

exact text as granted — not AI-modified
1 . A method of attaching a crown of a boring shoe to a section of casing, comprising:
 attaching a first end of an adaptable shank to the crown of the boring shoe; and   machining an opposite second end of the adaptable shank to configure the second end of the adaptable shank for attachment to the section of casing after attaching the first end of the adaptable shank to the crown.   
     
     
         2 . The method of  claim 1 , further comprising forming the adaptable shank to comprise a generally cylindrical structure. 
     
     
         3 . The method of  claim 2 , further comprising forming the adaptable shank to comprise a metal alloy. 
     
     
         4 . The method of  claim 3 , further comprising forming the adaptable shank to comprise a steel alloy. 
     
     
         5 . The method of  claim 2 , further comprising selecting the metal alloy to exhibit a tensile yield strength of at least about 60,000 pounds per square inch. 
     
     
         6 . The method of  claim 2 , further comprising forming the adaptable shank to have a length between about twenty-five (25) centimeters (about ten (10) inches) and about two hundred (200) centimeters (about seventy-nine (79) inches). 
     
     
         7 . The method of  claim 1 , further comprising forming the adaptable shank to have an average wall thickness greater than about five percent (5%) of a maximum diameter of the crown. 
     
     
         8 . The method of  claim 7 , further comprising forming the average wall thickness of the adaptable shank to be about 10% or more of the maximum diameter of the crown. 
     
     
         9 . The method of  claim 8 , further comprising:
 forming the maximum diameter of the crown to be about 12.25 inches; and   forming the average wall thickness of the adaptable shank to be about 1.22 inches or more.   
     
     
         10 . The method of  claim 8 , further comprising forming the average wall thickness of the adaptable shank to be about 12.5% or more of the maximum diameter of the crown. 
     
     
         11 . The method of  claim 10 , further comprising:
 forming the maximum diameter of the crown to be about 6.00 inches; and   forming the average wall thickness of the adaptable shank to be about 0.750 inches or more.   
     
     
         12 . The method of  claim 10 , further comprising forming the average wall thickness of the adaptable shank to be about 15% or more of the maximum diameter of the crown. 
     
     
         13 . The method of  claim 12 , further comprising:
 forming the maximum diameter of the crown to be about 8.50 inches; and   forming the average wall thickness of the adaptable shank to be about 1.313 inches or more.   
     
     
         14 . The method of  claim 7 , further comprising:
 forming the maximum diameter of the crown to be about 17.50 inches; and   forming the average wall thickness of the adaptable shank to be about 1.125 inches or more.   
     
     
         15 . The method of  claim 7 , further comprising:
 forming the maximum diameter of the crown to be about 24.00 inches; and   forming the average wall thickness of the adaptable shank to be about 1.263 inches or more.   
     
     
         16 . The method of  claim 7 , wherein attaching a first end of an adaptable shank to the crown of the boring shoe comprises:
 abutting a surface of the first end of the adaptable shank to a surface of the crown; and   welding an interface between the surface of the crown and the abutting surface of the first end of the adaptable shank.   
     
     
         17 . The method of  claim 16 , wherein welding the interface between the surface of the crown and the abutting surface of the first end of the adaptable shank comprises depositing a weld material in a weld groove. 
     
     
         18 . The method of  claim 1 , wherein machining the opposite second end of the adaptable shank comprises machining threads on at least one of an interior surface and an exterior surface of the adaptable shank. 
     
     
         19 . A method of attaching a boring shoe to a section of casing, comprising:
 selecting an adaptable shank to have an average wall thickness greater than about five percent (5%) of a maximum diameter of a crown to be welded thereto;   welding the first end of the adaptable shank to the crown to form the boring shoe; and   configuring an opposite second end of the adaptable shank for attachment to the section of casing after welding the first end of the adaptable shank to the crown.   
     
     
         20 . The method of  claim 18 , further comprising selecting the adaptable shank to have a length between about twenty-five (25) centimeters (about ten (10) inches) and about two hundred (200) centimeters (about seventy-nine (79) inches). 
     
     
         21 . The method of  claim 20 , further comprising selecting the average wall thickness of the adaptable shank to be about 10.0% or more of the maximum diameter of the crown. 
     
     
         22 . The method of  claim 21 , further comprising selecting the average wall thickness of the adaptable shank to be about 12% or more of the maximum diameter of the crown. 
     
     
         23 . The method of  claim 22 , further comprising selecting the average wall thickness of the adaptable shank to be about 15% or more of the maximum diameter of the crown. 
     
     
         24 . The method of  claim 19 , further comprising:
 welding the first end of the adaptable shank to the crown at a first geographic location;   transporting the boring shoe from the first geographic location to a second geographic location using a vehicle; and   configuring the opposite second end of the adaptable shank for attachment to the section of casing at the second geographic location.   
     
     
         25 . A boring shoe, comprising:
 a crown configured for at least one of drilling and reaming a wellbore; and   an adaptable shank attached to the crown, the adaptable shank comprising a generally cylindrical wall having an average wall thickness greater than about five percent (5%) of a maximum diameter of the crown.   
     
     
         26 . The boring shoe of  claim 25 , wherein the crown is welded to the adaptable shank. 
     
     
         27 . The boring shoe of  claim 26 , wherein the average wall thickness of the generally cylindrical wall is greater than about 10% of the maximum diameter of the crown. 
     
     
         28 . The boring shoe of  claim 27 , wherein the average wall thickness of the generally cylindrical wall is greater than about 12% of the maximum diameter of the crown. 
     
     
         29 . The boring shoe of  claim 28 , wherein the average wall thickness of the generally cylindrical wall is greater than about 15% of the maximum diameter of the crown. 
     
     
         30 . The boring shoe of  claim 29 , wherein the adaptable shank comprises a metal alloy material exhibiting a tensile yield strength of at least about 60,000 pounds per square inch.

Join the waitlist — get patent alerts

Track US2010252331A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.