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公开(公告)号：US20210262313A1
公开(公告)日：2021-08-26
申请号：US17254091
申请日：2019-06-21
Applicant: Rawwater Engineering Limited
Inventor： Robert Eden , Joseph Oluleke
IPC: E21B33/134 , C22C12/00
Abstract: Bismuth-based alloys and the use of plugs made from such alloys to seal wells as well as the plugs themselves are provided. There is provided an alloy of bismuth, tin, and antimony comprising at least about 50% by weight bismuth, about 30 to about 35% by weight tin, and about 1.8 to about 2.8% by weight antimony; and an alloy of bismuth and silver comprising about 91 to about 97% by weight bismuth and about 3 to about 9% by weight silver. There is also provided a method for producing a plug comprising an alloy of bismuth, tin, and antimony; and a method for producing a plug comprising an alloy of bismuth and silver; wherein a length of a well is filled with the molten alloy and the molten alloy is allowed to solidify.
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公开(公告)号：US12000237B2
公开(公告)日：2024-06-04
申请号：US17254091
申请日：2019-06-21
Applicant: Rawwater Engineering Limited
Inventor： Robert Eden , Joseph Oluleke
IPC: E21B33/134 , C22C12/00
CPC classification number: E21B33/134 , C22C12/00
Abstract: Bismuth-based alloys comprising at least about 50% by weight bismuth, about 30 to about 35% by weight tin, and about 1.8 to about 2.8% by weight antimony; and an alloy of bismuth and silver comprising about 90 to about 97% by weight bismuth and about 3 to about 9% by weight silver. A plug comprising an alloy of bismuth, tin, and antimony; and a plug comprising an alloy of bismuth and silver. A method of using a plug made from a bismuth-based alloy to seal a well, wherein a length of a well is filled with the molten alloy and the molten alloy is allowed to solidify.
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公开(公告)号：US20230287758A1
公开(公告)日：2023-09-14
申请号：US18199094
申请日：2023-05-18
Applicant: Rawwater Engineering Limited
Inventor： Robert Eden , Joseph Oluleke
IPC: E21B33/134 , C22C12/00
CPC classification number: E21B33/134 , C22C12/00
Abstract: Bismuth-based alloys comprising at least about 50% by weight bismuth, about 30 to about 35% by weight tin, and about 1.8 to about 2.8% by weight antimony; and an alloy of bismuth and silver comprising about 90 to about 97% by weight bismuth and about 3 to about 9% by weight silver. A plug comprising an alloy of bismuth, tin, and antimony; and a plug comprising an alloy of bismuth and silver. A method of using a plug made from a bismuth-based alloy to seal a well, wherein a length of a well is filled with the molten alloy and the molten alloy is allowed to solidify.
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公开(公告)号：US20210269908A1
公开(公告)日：2021-09-02
申请号：US17254781
申请日：2019-06-21
Applicant: Rawwater Engineering Limited
Inventor： Robert Eden
Abstract: A method of sealing a surface is provided, the method comprising the steps of providing a metallic composition; providing a propellant; heating the metallic composition to above the melting point of the metallic composition to provide at least partially liquid metallic composition; accelerating the at least partially liquid metallic composition towards the surface by means of the propellant; and applying the at least partially liquid metallic composition to the surface.
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