Method and system for hydraulic fracture diagnosis with the use of a coiled tubing dual isolation service tool
US9976402B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2014 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Nov 12, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/26
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hydraulic fracture diagnostic system for reservoir evaluation of a high angle wellbore includes a coiled tubing string that extends from the surface to a location within a wellbore. The system includes a sensor and a pump connected to the coiled tubing string. A tool having at least two packing elements and a port positioned between the packing elements is connected to the coiled tubing string. The coiled tubing string positions the tool adjacent a fracture. The packing elements isolate the fracture and the port is configured to provide communication with the isolated portion of the wellbore. A diagnostic method includes pumping a volume of fluid from the isolated portion of a wellbore using a coiled tubing string and monitoring the pressure within the coiled tubing string. Pressure within the coiled tubing string may also be monitored after injection of fluid into the isolated wellbore through the coiled tubing string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.