Self-diverting resin systems for sand consolidation
US6632778B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2000 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | May 2, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/5756
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Herein is described a fluid that is useful in consolidating a formation without the use of a gravel pack and screen. In particular, the fluid is useful in consolidating heterogeneous formations where the permeability is not uniform over-the total formation thickness, e.g. a formation having at least a first layer and a second layer, wherein the permeability of the first layer is greater than that of the second layer. The fluid comprises at least one of a resin, a curing agent, and a surfactant, wherein the fluid is self-diverting. Optionally, a catalyst or other additives, such as an oil wetting agent, can be used.Fluids of the present invention are self-diverting, i.e. in a formation comprising at least a first layer and a second layer, wherein the first layer has a higher permeability than the second layer, the depth of penetration of the fluid into the second layer will be greater than that predicted from the permeability ratio (the ratio of the permeability of the first layer to that of the second layer). Self-diversion can be achieved by structuring the fluid by incorporation of another phase, either liquid or gas, or by using an additive in the fluid.Also disclosed are method…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.