Smart filtrate for strengthening formations
US11149519B2 · kind B2 · utility
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27References
10Claims
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Key dates
| Filing date | Mar 30, 2015 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Mar 30, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/13
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of sealing a formation that includes drilling a wellbore through the formation while pumping a non-aqueous based wellbore fluid comprising a first sealing component into the wellbore, wherein the non-aqueous based wellbore fluid filters into the formation as a filtrate and substantially thickens is disclosed. The substantially thickening may result from adding a second sealing component to the wellbore fluid, whereby the first sealing component initiates a reaction of the second sealing component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.