Casing racking module

Abstract

A casing racking module is located on a set-back platform at a forward edge of a drilling rig. The casing racking module has a casing frame forming rows for casing. Paddle assemblies are mounted on the casing frame. The paddle assemblies have a shaft, an arm pivotally located on the shaft, and a bumper pivotally located on the shaft. A rotary exit spring is located between the arm and the bumper. An arm stop limits rotation of the arm relative to the bumper. A rotary return spring is located between the bumper and the casing frame. A bumper stop aligns the bumper with the casing frame. An extendable gate opens from the end of each row.

1 . A casing racking module ( 900 ), comprising:
 a casing frame ( 910 ) forming a plurality of rows ( 912 );   a plurality of arms ( 960 ) pivotally connected to the frame ( 910 ) and pivotal between a first arm position and a second arm position;   the arms ( 960 ) extending into the rows ( 912 ) in the first arm position;   the arms ( 960 ) extending over the casing frame ( 910 ) in the second arm position;   a plurality of bumpers ( 950 ) pivotally connected to the frame ( 910 ) and pivotal between a first bumper position and a second bumper position;   the bumpers ( 950 ) extending over the casing frame ( 910 ) in the first bumper position; and,   the bumpers ( 950 ) extending into the rows ( 912 ) in the second bumper position.   
     
     
         2 .- 4 . (canceled) 
     
     
         5 . The casing frame of  claim 1 , further comprising:
 a bumper stop extending between the bumper and the casing frame; and,   the bumper stop limiting rotation of the bumper relative to the casing frame.   
     
     
         6 . The casing frame of  claim 1 , further comprising:
 an arm stop extending between the arm and the bumper; and,   the arm stop limiting rotation of the arm relative to the bumper.   
     
     
         7 . The casing frame of  claim 1 , further comprising:
 the arm rotated in a first direction from the first arm position to the second arm position; and,   the arm in the second arm position rotated in a second direction opposite to the first direction to extend over the casing frame in a third arm position.   
     
     
         8 . The casing frame of  claim 1 , further comprising:
 the bumper pivotal in a first rotational direction from the first bumper position to the second bumper position; and,   the bumper in the second bumper position rotated in the first direction to a third bumper position perpendicular to the casing frame.   
     
     
         9 . The casing frame of  claim 8 , further comprising:
 the bumper in the third bumper position rotated in a second direction opposite to the first direction to the first bumper position.   
     
     
         10 . The casing frame of  claim 7 , further comprising:
 the arm in the third arm position being in alignment with the bumper in the first bumper position and with the casing frame.   
     
     
         11 . The casing frame of  claim 1 , further comprising:
 the arm is rotated from the first arm position to the second arm position by engagement with casing moved into the casing racking module.   
     
     
         12 . The casing frame of  claim 8 , further comprising:
 the bumper is rotated from the second bumper position to the third bumper position by engagement with casing moved into the casing racking module.   
     
     
         13 . (canceled) 
     
     
         14 . A casing racking module ( 900 ), comprising:
 a casing frame ( 910 ) forming a plurality of rows ( 912 );   a plurality of arms ( 960 ) pivotally connected to the frame ( 910 );   a plurality of bumpers ( 950 ) pivotally connected to the frame ( 910 );   a torsional exit spring ( 976 ) compressible on rotation of the arm ( 960 ) towards the bumper ( 950 ); and,   a torsional return spring ( 978 ) compressible on rotation of the bumper ( 950 ) away from alignment with the casing frame ( 910 ).   
     
     
         15 - 16 . (canceled) 
     
     
         17 . The casing racking module of  claim 14 , further comprising:
 a bumper stop extending between the bumper and the casing frame; and,   an arm stop extending between the arm and the bumper.   the bumpers extending into the rows in the second bumper position.   
     
     
         18 - 20 . (canceled)