Methods of increasing fracture resistance in low permeability formations
US9103206B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 1, 2008 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Apr 10, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/138
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of increasing the fracture resistance of a low permeability formation that includes emplacing a wellbore fluid in a wellbore through the low permeability formation, the wellbore fluid comprising: a settable carrier fluid; and a solid particulate bridging material; increasing the pressure in the wellbore such that fractures are formed in the formation; allowing the settable carrier fluid to enter the fractures; bridging and sealing the mouths of the fractures to form a substantially impermeable bridge proximate the mouth of the fractures thereby strengthening the formation; and holding the increased pressure for an amount of time sufficient for setting of the carrier fluid in the fractures is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.