Real-time annulus pressure while drilling for formation integrity test
US10419018B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2016 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Jul 21, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/008
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Aspects of the disclosure can relate to a process for transmitting a pump-off pressure profile for formation integrity testing within a limited bandwidth. For example, a process may include measuring pump-off pressure data. The pump-off pressure data represents the pump-off pressure profile. The method also includes determining, from the pump-off pressure data, a pump-off pressure data portion corresponding to a formation integrity testing characteristic. The method also includes compressing pump-off pressure data portion with a compression protocol to produce compression bits. The compression bits representing the pump-off pressure data portion corresponding to the formation integrity testing characteristic. The method also includes transmitting, via a communication module, the compression bits to a computing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.