US 12,228,009 B2
System and method for permanent plugging of a petroleum well
Lasse Haugland, Bryne (NO)
Assigned to Altus Intervention (Technologies) AS, Stavanger (NO)
Filed by Altus Intervention (Technologies) AS, Stavanger (NO)
Filed on Dec. 8, 2022, as Appl. No. 18/077,707.
Claims priority of application No. 20211489 (NO), filed on Dec. 10, 2021.
Prior Publication US 2023/0184055 A1, Jun. 15, 2023
Int. Cl. E21B 33/134 (2006.01)
CPC E21B 33/134 (2013.01) 4 Claims
OG exemplary drawing
 
1. A method for plugging an A-annulus in a petroleum well, the method comprises the steps of:
positioning a bridge plug in a production tubing;
providing openings in the production tubing above the bridge plug to create a fluid communication between the production tubing and an A-annulus formed between the production tubing and a casing;
positioning a landing packer within the production tubing and above the openings; and
providing a tool forming a dump bailer,
the method further comprises the steps of:
providing a valve having a biased valve body adapted to be displaced between a closed position and an opened position, adapted to liquid tight close an entrance to a passage between an upper face and a lower face of the landing packer when in the closed position, adapted to open the entrance to the passage when in the opened position, adapted to receive the tool from above, adapted to be displaced from the closed position to the opened position by a downward force executed by the tool, and adapted to be displaced to the closed position when the downward force ceases;
providing the tool comprising an operatable wireline, a pump at an upper end, a fluid connection between a suction side of the pump and a surrounding of the tool, and an outlet valve between a compartment and the an outlet, and
repeatedly performing the sequence of steps:
landing the tool on the valve;
opening the valve body by the downward force executed by the tool and establishing a fluid tight conduit between the compartment and the passage;
starting the pump to increase pressure inside the compartment;
opening the outlet valve by the increased pressure;
pumping fluid plugging material from the compartment via the outlet valve, outlet, entrance, passage, and openings into the A-annulus until the compartment is empty for fluid plugging material;
stopping the pump;
displacing the tool upwards such that the valve body returns to the first closed position; and
displacing the tool to the surface, until the A-annulus is filled with a desired amount of fluid plugging material.