US 11,840,903 B2
Dynamic ferrofluid shield for well control
Faris Hasan Tulbah, Al Khubar (SA); and Rafael Adolfo Lastra, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Dec. 8, 2021, as Appl. No. 17/643,334.
Prior Publication US 2023/0175338 A1, Jun. 8, 2023
Int. Cl. E21B 33/06 (2006.01); E21B 35/00 (2006.01); H01F 1/44 (2006.01)
CPC E21B 33/06 (2013.01) [H01F 1/447 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for containing pressure coming from a pressure source, the method comprising:
locating a first set of electromagnetic field emitting devices in a vicinity of the pressure source;
using the first set of electromagnetic field emitting devices to generate a first electromagnetic field in a first shape that forms an enclosure containing the pressure source;
pumping a magnetic fluid into the enclosure at a pumping pressure; and
increasing the pumping pressure to overcome the pressure from the pressure source.