Method and a device for intervention in an underwater production well

Abstract

A method for intervention in an underwater production well, in which the well head ( 1 ) of the production well is located on the seabed ( 2 ), and wherein a drilling rig ( 26 ), which comprises at least a robotized drill floor ( 32 ), is placed at the well head ( 1 ), after which necessary intervention operations are carried out in a remote-controlled manner by means of the drilling rig ( 26 ).

1 . A method for intervention in an underwater production well, in which a well head of the production well is located on the seabed ( 2 ), wherein the method includes:
 arranging a bottom frame, which fits in an independent and complementary manner to the well head ( 4 ) on the sea bed;   anchoring the bottom frame to the seabed;   arranging a submerged drilling rig, on the bottom frame above the well head after which necessary intervention operations are carried out in a remote-controlled manner by means of the drilling rig.   
   
   
       2 . The method in accordance with  claim 1 , wherein the method includes arranging a robotized drill floor in the drilling rig. 
   
   
       3 . The method in accordance with  claim 2 , wherein the method includes arranging a support frame between the bottom frame and the drilling rig. 
   
   
       4 . An equipment device for intervention in an underwater production well, in which a well head of the production well is located on the seabed, wherein the equipment comprises a bottom frame, which fits in a independent and complementary manner to the well head, and where the bottom frame is anchored to the seabed and forms a base for a submerged drilling rig. 
   
   
       5 . The equipment device in accordance with  claim 4 , wherein the submerged drilling rig is located at the well head, and where the drilling rig includes a robotized drill floor. 
   
   
       6 . The device in accordance with  claim 4 , wherein the drilling rig is connected to the bottom frame by means of a support frame. 
   
   
       7 . The device in accordance with  claim 6 , wherein the support frame surrounds a blowout preventer for the well. 
   
   
       8 . The device in accordance with  claim 4 , wherein the drilling rig is provided with a drilling module. 
   
   
       9 . The device in accordance with  claim 4 , wherein the drilling rig is provided with a drill pipe magazine.