System and method for drilling rig state determination
US11136876B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2017 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Dec 17, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for drilling a borehole in a subsurface formation includes receiving measured values indicative of operations performed by drilling equipment while drilling. The measured values include hookload values. The hookload values are analyzed to identify hookload values acquired while connecting a drill pipe, and a block weight value is set based on such a hookload value. The block weight value is subtracted from the hookload values to produce rebased hookload values. A rig state model produces a value for a state of the drilling equipment based on the measured values and the rebased hookload values. Responsive to the state of the drilling equipment, an operation performed to drill the subsurface formation is changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.