Fluid loss control additives for use with gravel pack placement fluids
US5415228A · kind A · utility
35Cited by
8References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 7, 1993 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Dec 7, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/906
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improved fluid loss control in gravel pack placement fluids is achieved when a fluid loss control additive is provided comprising a selectively soluble particulate having a size of less than 1000 microns and having a linear size distribution when cumulative weight percent is plotted against the logarithm of the particle size. The preferred selectively soluble particulate comprises calcium carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.