Downhole Fish Grabbing Tool

Abstract

A downhole fishing tool includes a main body, a hollow cover, an imaging sub-system, a movable claw, and a sling hub. The main body also includes a barrel in which multiple fluid ports are defined. The hollow cover is arranged on the axis and has an inner surface forming an annular space between the barrel of the main body and the inner surface of the cover. The fluid ports are aligned with the cover. The imaging sub-system includes a camera arranged in a compartment defined in the main body. The movable claw and sling hub are mounted on a second end of the main body. The movable claw includes at least two arms bendable at an elbow joint and having s a magnet section for engaging a fish. The sling hub is arranged between the at least two arms and moves the movable claw between an open and closed position.

What is claimed is: 
     
         1 . A downhole fishing tool comprising:
 a main body having a first end and a second end defining a first axis; the main body comprising:
 a barrel arranged between the first end to the second end of the main body, the barrel having an outer surface with a barrel diameter; 
 a fluid line defined in the main body, 
 a plurality of fluid ports defined in the outer surface of the barrel; wherein the plurality of fluid ports are equally spaced around the outer surface of the barrel; and 
 a plurality of port conduits, wherein each port conduit in the plurality of port conduit fluidly connects a corresponding fluid port in the plurality of fluid ports to the fluid line of the main body; 
 a compartment defined between the barrel and the second end of the main body, 
 wherein the main body defines a hole extending from the second end to the compartment, wherein the hole is centered on the axis; 
   a hollow cover arranged on the axis having an inner surface defining an interior space extending from a closed end of the cover to an open end of the cover, wherein at least a portion of the main body is arranged in the interior space, wherein the plurality of fluid ports are aligned with the cover; wherein the outer surface of the barrel and the inner surface of the hollow cover define an annular space;   an imaging sub-system; the imaging sub-system comprising:
 a camera arranged in the compartment of the main body; wherein an optical lens of the camera is centered on the axis and faces away from the first end of the main body; and 
 a transparent shell, wherein the transparent shell encloses the camera; 
 wherein the transparent protective shell fluidically isolates the camera; 
   a movable claw mounted on the second end of the main body, wherein the claw centered on the axis; and   a sling hub slidably mounted to the second end of the main body, wherein the sling hub is centered on the axis.   
     
     
         2 . The tool according to  claim 1 , wherein the claw comprises at least two movable fingers, wherein the claw is centered on the axis. 
     
     
         3 . The tool according to  claim 1 , wherein the main body is configured to be positioned in a wellbore. 
     
     
         4 . The tool according to  claim 1 , wherein the plurality of fluid ports are configured to discharge a cleaning fluid. 
     
     
         5 . The tool according to  claim 4 , wherein the plurality of fluid ports are configured to radially discharge the cleaning fluid. 
     
     
         6 . The tool according to  claim 1 , herein the claw comprises the sling hub. 
     
     
         7 . The tool according to  claim 1 , wherein the protective shell extends into the hole of the second end of the main body. 
     
     
         8 . The tool according to  claim 1 , the movable claw comprising:
 multiple arms, each arm of the multiple arms comprising:
 a base connected to the second end of the main body; 
 a clamping finger connected to the base, the clamping finger having a connection end and a tipped end; wherein the tipped end is free and movable relative to the base; wherein each clamping finger comprises a magnet section between the connection end and the tipped end; and 
 an elbow joint connecting the base and the clamping finger, wherein the connection end of the clamping finger is connected to the elbow joint. 
   
     
     
         9 . The tool according to  claim 8 , wherein the sling hub is arranged between multiple arms. 
     
     
         10 . The tool according to  claim 8 , wherein the multiple arms are arranged equidistant from the axis. 
     
     
         11 . The tool according to  claim 8 , wherein the second end of the main body comprises a face and an edge defining the face, wherein the hole of the second end of the main body extends through the face. 
     
     
         12 . The tool according to  claim 11 , wherein the multiple arms connect to the face of the second end of the main body, adjacent the edge of the second end of the main body; wherein the base of each arm in the multiple arms extends parallel to the axis. 
     
     
         13 . A downhole fishing tool comprising:
 a main body having a first end and a second end defining a first axis; the main body comprising:
 a barrel arranged between the first end to the second end of the main body, the barrel having an outer surface with a barrel diameter; 
 a plurality of fluid ports defined in the outer surface of the barrel; 
 a compartment defined between the barrel and the second end of the main body, 
 wherein the main body defines a hole extending from the second end to the compartment, wherein the hole is centered on the axis; 
 a hollow cover arranged on the axis having an inner surface defining an interior space and extending from a closed end of the cover to an open end of the cover, wherein the plurality of fluid ports are aligned with the cover; wherein the outer surface of the barrel and the inner surface of the hollow cover define an annular space; 
   an imaging sub-system comprising:
 a camera arranged in the compartment of the main body; wherein an optical lens of the camera is centered on the axis and faces away from the first end of the main body; and 
 a transparent shell, wherein the transparent shell encloses the camera; 
 wherein the transparent protective shell fluidically isolates the camera; 
   a movable claw mounted on the second end of the main body, the movable claw comprising:   at least two arms, each arm comprising:
 a base connected to the second end of the main body; 
 a clamping finger connected to the base, the clamping finger having a connection end and a tipped end; wherein the tipped end is free and movable relative to the base; 
   wherein each clamping finger comprises a magnet section between the connection end and the tipped end; and
 an elbow joint connecting the base and the clamping finger, wherein the connection end of the clamping finger is connected to the elbow joint; 
   a sling hub mounted to the second end of the main body, wherein the sling hub is arranged between the at least two arms.   
     
     
         14 . The tool according to  claim 13 , wherein the sling hub is centered on the axis. 
     
     
         15 . The tool according to  claim 13 , wherein the sling hub defines an aperture, wherein the aperture of the sling hub is centered on the axis. 
     
     
         16 . The tool according to  claim 15 , wherein the aperture aligns with the hole defined in the second end of the main body and aligns with the lens of the camera. 
     
     
         17 . The tool according to  claim 15 , wherein the sling hub comprises:
 a hub body mounted to the second end of the main body; and   a contact face oriented away from the main body; wherein the aperture extends through the hub body and contact face.   
     
     
         18 . The tool according to  claim 13 , wherein the magnet sections of the at least two fingers are arranged adjacent the connection end of the clamping fingers of the at least two arms. 
     
     
         19 . The tool according to  claim 13 , wherein the magnet sections of the at least two arms are arranged adjacent to the sling hub. 
     
     
         20 . The tool according to  claim 13 , further comprising a plurality of linkages, wherein each linkage of the plurality of linkages extends from the hub body to a corresponding arm of the at least two arms. 
     
     
         21 . The tool according to  claim 13 , wherein the tipped end of the at least two fingers are separated by a distance of about 1 inch to about 6 inches. 
     
     
         22 . The tool according to  claim 13 , wherein the at least two arms are arranged on an edge of the second end of the main body. 
     
     
         23 . The tool according to  claim 22 , wherein the at least two fingers are arranged equally around the edge of the second end of the main body. 
     
     
         24 . The tool according to  claim 13 , wherein the at least two arms have a length of 5 inches to about 30 inches. 
     
     
         25 . The tool according to  claim 13 , wherein at least a portion of the main body is arranged in the interior space of the cover. 
     
     
         26 . The tool according to  claim 13 , wherein the plurality of fluid ports of the main body are equally spaced around the outer surface of the barrel. 
     
     
         27 . The tool according to  claim 13 , wherein the main body further comprises a fluid line defined in the main body and a plurality of port conduits, wherein each port conduit in the plurality of port conduit fluidly connects a corresponding fluid port in the plurality of fluid ports to the fluid line of the main body. 
     
     
         28 . A method comprising:
 imaging, by an imaging sub-system of a downhole fishing tool arranged in a wellbore, the downhole environment of a wellbore, a fishing tool into a wellbore, wherein a movable claw of the fishing tool is in an open position with first diameter;   identifying a debris item in the wellbore using the imaging sub-system; and   prompting the claw to move from the open position to a closed position, wherein the movable claw of the fishing tool has a second diameter in the closed position, wherein the second diameter is less than the first diameter.