Kinetic shear ram

Abstract

The present disclosure relates to a blowout preventer having a body and a kinetic shear ram disposed within the body, and associated systems and methods.

1 . A blowout preventer comprising:
 a body and   one or more kinetic shear rams disposed within the body.   
     
     
         2 . The blowout preventer of  claim 1 , wherein the blowout preventer comprise a two kinetic shear rams. 
     
     
         3 . The blowout preventer of  claim 1 , wherein the kinetic shear rams have a mass in the range of from 100 to 500 kg a piece. 
     
     
         4 . The blowout preventer of  claim 1 , wherein the kinetic shear rams comprise shear blades. 
     
     
         5 . The blowout preventer of  claim 4 , wherein the shear blades have a geometry that comprises a V-angle and a rake angle. 
     
     
         6 . The blowout preventer of  claim 5 , wherein the V-angle of the shear blades is in the range of from 0 to 60 degrees. 
     
     
         7 . The blowout preventer of  claim 5 , wherein the rake angle of the shear blades is in the range of from 30 to 90 degrees. 
     
     
         8 . The blowout preventer of  claim 1 , wherein the body comprises a first ram cavity and a second ram cavity, wherein a first kinetic shear ram is disposed within the first ram cavity and a second kinetic shear ram is disposed within the second ram cavity. 
     
     
         9 . The blowout preventer of  claim 1 , wherein the body comprises a propellant cavity. 
     
     
         10 . The blowout preventer of  claim 9 , wherein a propellant is disposed within the propellant cavity. 
     
     
         11 . The blowout preventer of  claim 10 , wherein the amount of propellant disposed within the propellant cavity is sufficient to generate enough gas pressure to accelerate the one or more kinetic shear rams to a velocity in the range of from 50 to 250 m/s. 
     
     
         12 . The blowout preventer of  claim 10 , wherein the amount of propellant disposed within the propellant cavity is sufficient to generate a pressure in the range of from 5,000 to 25,000 psi. 
     
     
         13 . The blowout preventer of  claim 10 , wherein the propellant is a solid oxidant. 
     
     
         14 . A blowout preventer system comprising:
 a tubular and   a blowout preventer disposed around the tubular, wherein the blowout preventer comprises:
 a body and 
 a kinetic shear ram disposed within the body. 
   
     
     
         15 . A method of shearing a tubular comprising:
 providing blowout preventer system comprising: a tubular and
 a blowout preventer disposed around the tubular, wherein the blowout preventer comprises:
 a body and 
 a kinetic shear ram disposed within the body and actuating the blowout preventer to sever the tubular. 
 
   
     
     
         16 . The method of  claim 15 , wherein actuating the blowout preventer to sever the tubular comprise igniting the propellant. 
     
     
         17 . The method of  claim 16 , wherein igniting the propellant comprises igniting the propellant with an ignition system. 
     
     
         18 . The method of any one of  claims 16 , further comprising kinetically shearing the tubular. 
     
     
         19 . The method of any one of  claims 16 , further comprising deactivating the blowout preventer.