Acid soluble, high fluid loss pill for lost circulation
US6790812B2 · kind B2 · utility
99Cited by
19References
94Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2001 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Jun 15, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/906
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
High fluid loss acid soluble lost circulation material and spotting pill comprising the lost circulation material. The spotting pill preferably is weighted to a density substantially the same as the drilling fluid used to treat the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.