Thermoelectric conversion material
US-2015380623-A1 · Dec 31, 2015 · US
Methods, apparatus and systems for creating wellbore plugs for abandoned wells
US2025314146A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025314146-A1 |
| Application number | US-202519239574-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 16, 2025 |
| Priority date | Apr 3, 2018 |
| Publication date | Oct 9, 2025 |
| Grant date | — |
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- Title
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Abstract
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A wellbore is plugged using a bismuth alloy. The wellbore is 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.
First claim
Opening claim text (preview).
1 - 17 . (canceled) 18 . A formation plug formed in situ in a wellbore traversing a formation, comprising: solid bismuth alloy material having a solid first cylindrical body portion, a dendritic web extending outwardly from and around at least a portion of said solid first cylindrical body portion, and a solid second cylindrical body portion of smaller diameter than the first cylindrical body portion, a shoulder being defined at a transition from said first cylindrical body portion to said second cylindrical body portion. 19 . The formation plug according to claim 18 , further comprising a conical portion extending from an end of said first cylindrical portion. 20 . The formation plug according to claim 18 , wherein said shoulder is tapered. 21 . The formation plug according to claim 18 , further comprising at least one continuous thread extending proud of and running along a second portion of the first cylindrical body portion to the shoulder. 22 . The formation plug according to claim 21 , wherein said at least one continuous thread comprises at least one helical thread. 23 . The formation plug according to claim 21 , wherein said at least one continuous thread comprises a plurality of threads. 24 . The formation plug according to claim 23 , wherein said plurality of threads comprises a plurality of vertical threads and a plurality of additional threads having horizontal components and coupling said plurality of vertical threads. 25 . A formation plug according to claim 21 , wherein said shoulder includes at least one additional thread extending upward in the direction of said second cylindrical portion. 26 . A formation plug according to claim 24 , wherein said at least one additional thread forms a spiral. 27 - 34 . (canceled)
Assignees
Inventors
Classifications
Plastering the borehole wall; Injecting into the formation · CPC title
specially adapted for underwater installations (E21B29/08 takes precedence) · CPC title
for underwater installations · CPC title
Metallic constituents · CPC title
Bridging plugs · CPC title
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Frequently asked questions
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- What does patent US2025314146A1 cover?
- A wellbore is plugged using a bismuth alloy. The wellbore is 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.
- Who is the assignee on this patent?
- Schlumberger Technology Corp
- What technology area does this patent fall under?
- Primary CPC classification C22C12/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Oct 09 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).