Systems and methods for recovering and protecting sidewall core samples in unconsolidated formations
US11913331B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2022 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Aug 25, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Systems and methods presented herein include sidewall coring tools used to return core samples of rock from a sidewall of a wellbore as part of a data collection exercise for exploration and production of hydrocarbons. In particular, the systems and methods presented herein perform sidewall coring of a subterranean formation using a combination of rotary and percussive coring. More specifically, the systems and methods presented herein rotate a coring cylinder of a sidewall coring tool back and forth less than a full rotation while pushing the coring cylinder of the sidewall coring tool against a bore wall of a wellbore, and push the coring cylinder of the sidewall coring tool into the subterranean formation to enable extraction of a core sample of the subterranean formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.