Method of isolating a wellbore with solid acid for fracturing
US9441447B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 24, 2014 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Jun 29, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus and methods of treating a subterranean formation including introducing a coiled tubing string into a wellbore to a wellbore zone, wherein the string comprises a packer on a bottom hole assembly; introducing an acid fracture treatment through the string; introducing bridging fluid comprising particulates through the string; circulating a portion of fluid in the wellbore; introducing a final portion of fluid with a higher concentration of particulates to further form and consolidate bridge-packer, wherein the concentration of particulates in the final portion of fluid is higher than the introducing the bridging fluid comprising the particulates; squeezing the bridging fluid to isolate a perforation into the zone; moving the string to next zone; and repeating introducing and moving.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.