IP Library Granted Patent US 10,738,554
Granted Patent B2
US 10,738,554 · App. 16/003,963 · Granted Aug 11, 2020

Repulsion force systems and methods for metal fish retrieval

Inventor: Ali Radi Alssafwany (Safwa, SA)
Assignee: SAUDI ARABIAN OIL COMPANY
E21B31/06E21B31/00E21B31/18E21B31/20
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Quick Facts
Patent No.
US 10,738,554
App. No.
16/003,963
Granted
Aug 11, 2020
Kind
B2
Abstract

A fishing tool used for fishing a metal object from a subterranean well has a housing. The housing is an elongated member having an internal bore. A first electromagnetic assembly is located within the internal bore of the housing and a second electromagnetic assembly is located at an outer diameter surface of the housing. The second electromagnetic assembly moves between a contracted position and an extended position. The second electromagnetic assembly extends outward from the housing. The first electromagnetic assembly generates a first magnetic force with an adjustable magnitude. The second electromagnetic assembly generates a second magnetic force with an adjustable magnitude. The first magnetic force and the second magnetic force have the same magnetic polarity.

Claims (25)

1. A system for fishing a metal object from a subterranean well, the system including:

a fishing tool with housing, the housing being an elongated member having an internal bore;

a first electromagnetic assembly located within the internal bore of the housing; and

a second electromagnetic assembly located at an outer diameter surface of the housing, the second electromagnetic assembly being moveable between a contracted position and an extended position where the second electromagnetic assembly extends outward from the housing; where

the first electromagnetic assembly is operable to generate a first magnetic force with an adjustable magnitude; and

the second electromagnetic assembly is operable to generate a second magnetic force with an adjustable magnitude, the first magnetic force and the second magnetic force having a same magnetic polarity.

2. The system of claim 1 , where the first electromagnetic assembly is located proximate to a first end of the housing, where the internal bore of the housing is open at the first end of the housing.

3. The system of claim 1 , where the first electromagnetic assembly is operable to attract the metal object and releasably secure the metal object to the fishing tool.

4. The system of claim 1 , where the internal bore of the housing is sized to receive the metal object within the internal bore of the housing.

5. The system of claim 1 , where the second electromagnetic assembly is sized to contact a well string in the extended position.

6. The system of claim 5 , where the second electromagnetic assembly is positioned to be spaced apart from the well string in the contracted position.

7. The system of claim 5 , where the well string is formed of a metal.

8. The system of claim 1 , where a second end of the housing is secured to an installation member, the installation member extending from a surface and into a well string.

9. A method for fishing a metal object from a subterranean well, the method including:

providing a fishing tool with housing, the housing being an elongated member having an internal bore;

locating a first electromagnetic assembly within the internal bore of the housing; and

locating a second electromagnetic assembly at an outer diameter surface of the housing, the second electromagnetic assembly being moveable between a contracted position and an extended position where the second electromagnetic assembly extends outward from the housing;

generating a first magnetic force with an adjustable magnitude with the first electromagnetic assembly; and

generating a second magnetic force with an adjustable magnitude with the second electromagnetic assembly, where the first magnetic force and the second magnetic force have a same magnetic polarity.

10. The method of claim 9 , further including attracting the metal object and releasably securing the metal object to the fishing tool with the first electromagnetic assembly.

11. The method of claim 9 , further including magnetizing the metal object with the first magnetic force.

12. The method of claim 9 , further including magnetizing a well string with the second magnetic force.

13. The method of claim 9 , further including locating the first electromagnetic assembly proximate to a first end of the housing, and where the internal bore of the housing is open at the first end of the housing and the internal bore of the housing is sized to receive the metal object within the internal bore of the housing.

14. The method of claim 9 , where the second electromagnetic assembly is sized to contact a well string in the extended position and is positioned to be spaced apart from the well string in the contracted position.

15. The method of claim 9 , where a second end of the housing is secured to an installation member, the installation member extending from a surface and into a well string and supporting the fishing tool within the well string.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 8, 2018
From: ALSSAFWANY, ALI RADI
To: SAUDI ARABIAN OIL COMPANY
Reel/Frame 046031/0690 →
Continuity (1)
Related Publication 20190376357A1 · Dec 12, 2019