Acid soluble coating for well screens
US4239084A · kind A · utility
14Cited by
10References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Jul 11, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well liner for a subterranean well is provided comprising an elongated tubular member which may be a wire wrapped screen having a plurality of slots or passages which are disposed longitudinally and circumferentially of and extending from the outer surface to the inner surface of the tubular member, and an impermeable inorganic matrix substantially filling said slots or passages and coated upon said inner and outer surfaces, said matrix being the reaction product of a first reactant consisting essentially of magnesium oxide and a second reactant consisting essentially of magnesium chloride, in a solvent or solution therefor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.