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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11739609 B1

PDFFull Text
Date of Patent:
Aug. 29, 2023

Filed:

Feb. 08, 2019

Methods, apparatus and systems for creating bismuth alloy plugs for abandoned wells

Applicant:

Schlumberger Technology Corporation, Sugar Land, TX (US);

Inventors:

Terizhandur S. Ramakrishnan, Cambridge, MA (US);

Quincy K. Elias, Cambridge, MA (US);

Hua Zhang, Cambridge, MA (US);

Youssef Magdy Abdou Mohamed Elkady, Cambridge, MA (US);

Yixuan Feng, Cambridge, MA (US);

Assignee:

SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);

Attorney:
Primary Examiner:

Catherine Loikith

Int. Cl.
CPC ...
E21B 33/13 (2006.01); E21B 29/12 (2006.01); C09K 8/42 (2006.01); C09K 8/46 (2006.01); C22C 12/00 (2006.01); E21B 33/12 (2006.01); E21B 33/134 (2006.01); G01N 33/2028 (2019.01); E21B 33/14 (2006.01); E21B 33/138 (2006.01);
U.S. Cl.
CPC ...
E21B 33/13 (2013.01); C09K 8/426 (2013.01); C09K 8/46 (2013.01); C22C 12/00 (2013.01); E21B 29/12 (2013.01); E21B 33/12 (2013.01); E21B 33/1208 (2013.01); E21B 33/134 (2013.01); E21B 33/138 (2013.01); E21B 33/143 (2013.01); G01N 33/2028 (2019.01);
Abstract

A wellbore is plugged using a bismuth alloy. In one embodiment, the bismuth alloy comprises an alloy of bismuth and tin. In another embodiment, the bismuth alloy comprises an alloy of bismuth and silver. The wellbore can be arranged so that a liquid bismuth alloy sets with an excess pressure of the plug relative to the borehole fluid pressure along a desired seal height distance. Other aspects are described and claimed.

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