Liner top diagnostic tool
US12215563B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2022 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | Apr 19, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/117
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Systems and methods include a method for testing in a well. Inflow packers are run into a hole in locked position downhole. A liner top diagnostic tool is run on a drill pipe to a desired depth. A lower-packer-sized ball is dropped into the well to activate a lower inflow packer assembly. A back side of the lower inflow packer assembly is pressure-tested to ensure seal integrity. The lower inflow packer is unset by withdrawing string weight while rotating the string. The drill string is displaced to test fluid to the end of the string, and weight and rotation are applied again to set the lower inflow packer. A Homer plot is established based on an inflow test. A deactivation-sized ball is dropped to deactivate the lower include packer assembly. An upper inflow packer assembly is activated using upper-packer-sized ball. A leak is identified based on testing both liner tops.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.