Methods for controlling water and sand production in subterranean wells
US7493957B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2005 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Jul 15, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods for stabilizing unconsolidated or weakly consolidated portions of a subterranean formation and controlling the production of water in those portions include introducing a consolidating agent into the subterranean formation so as to transform a portion of the subterranean formation surrounding the well bore into a consolidated region; and introducing a relative permeability modifier fluid into the subterranean formation so as to penetrate at least a portion of the consolidated region. Fracturing steps may be used to reconnect the well bore to portions of the formation (e.g., formation reservoirs) in certain embodiments. Optionally, preflush fluids, after-flush fluids, and shutting-in periods may be used as desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.