Single-assembly system and method for one-trip drilling, casing, cementing and perforating
US10267092B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2010 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Oct 7, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Some system embodiments include: a casing string having a distal end with a latch assembly; and a drillstring latched within the casing string by the latch assembly, the drillstring having at least one tool for perforation and stimulation. A pressure while drilling tool and one or more packers may be provided in the drillstring to further enable the stimulation operation. Prior to perforation, the casing string is cemented in place via a cement valve, and the drillstring is unlatched and raised to the desired completion position. The perforation and stimulation process can be repeated to provide multiple completions. The drillstring can be removed from the borehole or seated in place to control production. Logging instruments can be included for steering and/or use in making completion decisions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.