US2011186287A1PendingUtilityA1

Cleaning Device

38
Assignee: BAKER HUGHES INCPriority: Jan 29, 2010Filed: Jan 29, 2010Published: Aug 4, 2011
Est. expiryJan 29, 2030(~3.5 yrs left)· nominal 20-yr term from priority
Inventors:John P. DavisPaul L. ConnellGregory L. Hern
E21B 37/00E21B 37/02
38
PatentIndex Score
0
Cited by
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References
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Claims

Abstract

A cleaning device for use in cleaning wellbores and other tubular members in subterranean fluid production operations. The cleaning device includes a tool mandrel with cleaning components, such as a scraper assembly and stabilizers, secured thereupon with an attaching ring assembly. The attaching ring assembly includes a housing and a plurality of locking wedges that are movable with respect to the housing.

Claims

exact text as granted — not AI-modified
1 . A cleaning device for use in subterranean fluid production comprising:
 a tool mandrel;   a cleaning assembly radially surrounding the tool mandrel; and   an attaching ring assembly for securing the cleaning assembly upon the tool mandrel, the attaching ring assembly comprising:
 a housing; 
 a plurality of locking wedges that are moveable with respect to the housing between a first position, wherein the wedges are in a radially outward position with respect to the housing, and a second position, wherein the wedges are in a radially inward position with respect to the housing; and wherein 
 the attaching ring assembly is in an unlocked condition with respect to the tool mandrel when the wedges are in the radially outward position and is in a locked condition with respect to the tool mandrel when the wedges are in the radially inward position. 
   
     
     
         2 . The cleaning device of  claim 1  wherein the attaching ring assembly further comprises one or more translation screw arrangements that selectively translate the locking wedges toward the second position. 
     
     
         3 . The cleaning device of  claim 2  wherein the one or more translation screw arrangements each comprise:
 a threaded bore formed within a locking wedge; 
 a translation screw disposed within the threaded bore; and 
 wherein rotation of the translation screw within the bore will translate the locking wedge. 
 
     
     
         4 . The cleaning device of  claim 1  wherein the attaching ring assembly further comprises one or more compressible springs that bias the locking wedges toward the second position. 
     
     
         5 . The cleaning device of  claim 4  wherein the attaching ring assembly further comprises:
 a threaded bore formed in each locking wedge; and 
 a threaded screw that is removably disposed within the threaded bore to releasably retain the locking wedges in the first position. 
 
     
     
         6 . The cleaning device of  claim 1  wherein the housing is an annular ring member. 
     
     
         7 . The cleaning device of  claim 1  wherein the tool mandrel presents a groove that the locking wedges are secured within when the attaching ring assembly is in the locked condition. 
     
     
         8 . The cleaning device of  claim 1  wherein the cleaning assembly comprises a scraper assembly. 
     
     
         9 . The cleaning device of  claim 1  wherein:
 the tool mandrel further presents an enlarged-diameter portion which presents an axially-facing stop shoulder; and 
 wherein the cleaning assembly is secured upon the tool mandrel between the attaching ring assembly and the stop shoulder. 
 
     
     
         10 . The cleaning device of  claim 1  further comprising a stabilizer radially surrounding the tool mandrel. 
     
     
         11 . A cleaning device for use in subterranean fluid production comprising:
 a tool mandrel which presents an outer radial surface;   the tool mandrel further having an enlarged-diameter portion which presents an axially-facing stop shoulder;   a cleaning assembly radially surrounding the tool mandrel; and   an attaching ring assembly for securing the cleaning assembly upon the tool mandrel against the stop shoulder, the attaching ring assembly comprising:
 a housing; 
 a plurality of locking wedges that are moveable with respect to the housing between a first position, wherein the wedges are in a radially outward position with respect to the housing, and a second position, wherein the wedges are in a radially inward position with respect to the housing; and wherein 
 the attaching ring assembly is in an unlocked condition with respect to the tool mandrel when the wedges are in the radially outward position and is in a locked condition with respect to the tool mandrel when the wedges are in the radially inward position. 
   
     
     
         12 . The cleaning device of  claim 11  wherein the attaching ring assembly further comprises one or more translation screw arrangements that selectively translate the locking wedges toward the second position. 
     
     
         13 . The cleaning device of  claim 12  wherein the one or more translation screw arrangements each comprise:
 a threaded bore formed within a locking wedge; 
 a translation screw disposed within the threaded bore; and 
 wherein rotation of the translation screw within the bore will translate the locking wedge. 
 
     
     
         14 . The cleaning device of  claim 11  wherein the attaching ring assembly further comprises one or more compressible springs that bias the locking wedges toward the second position. 
     
     
         15 . The cleaning device of  claim 11  wherein the attaching ring assembly further comprises:
 a threaded bore formed in each locking wedge; and 
 a threaded screw that is removably disposed within the threaded bore to releasably retain the locking wedges in the first position. 
 
     
     
         16 . The cleaning device of  claim 11  wherein the housing is an annular ring member. 
     
     
         17 . The cleaning device of  claim 11  wherein the tool mandrel presents a groove that the locking wedges are secured within when the attaching ring assembly is in the locked condition. 
     
     
         18 . The cleaning device of  claim 11  wherein the cleaning assembly comprises a scraper assembly. 
     
     
         19 . The cleaning device of  claim 11  further comprising a stabilizer radially surrounding the tool mandrel. 
     
     
         20 . A cleaning device for use in subterranean fluid production comprising:
 a tool mandrel which presents an outer radial surface;   the tool mandrel further having an enlarged-diameter portion which presents an axially-facing stop shoulder;   a scraper assembly radially surrounding the tool mandrel; and   an attaching ring assembly for securing the scraper assembly upon the tool mandrel against the stop shoulder, the attaching ring assembly comprising:
 a housing; 
 a plurality of locking wedges that are moveable with respect to the housing between a first position, wherein the wedges are in a radially outward position with respect to the housing, and a second position, wherein the wedges are in a radially inward position with respect to the housing; 
 a mechanism to urge the locking wedges toward their inward position; and wherein 
 the attaching ring assembly is in an unlocked condition with respect to the tool mandrel when the wedges are in the radially outward position and is in a locked condition with respect to the tool mandrel when the wedges are in the radially inward position. 
   
     
     
         21 . The cleaning device of  claim 20  wherein the mechanism to urge the locking wedges toward their inward position comprises one or more compression springs. 
     
     
         22 . The cleaning device of  claim 20  wherein the mechanism to urge the locking wedges toward their inward position comprises one or more translation screw arrangements. 
     
     
         23 . The cleaning device of  claim 20  wherein the attaching ring assembly further comprises:
 a threaded bore formed in each locking wedge; and 
 a threaded screw that is removably disposed within the threaded bore to releasably retain the locking wedges in the first position. 
 
     
     
         24 . The cleaning device of  claim 20  wherein the tool mandrel presents a groove that the locking wedges are secured within when the attaching ring assembly is in the locked condition. 
     
     
         25 . The cleaning device of  claim 20  further comprising a stabilizer radially surrounding the tool mandrel. 
     
     
         26 . The cleaning device of  claim 20  wherein the housing is an annular ring member.

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