Drilling system utilizing downhole dysfunctions for determining corrective actions and simulating drilling conditions
US6021377A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1996 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Oct 23, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention provides a closed-loop system for drilling boreholes. The system includes a drill string having a drill bit, a plurality of sensors for providing signals relating to the drill string and formation parameters, a downhole device which processes various downhole sensors signals and computes dysfunctions relating to the drilling operations and transmits such dysfunctions to a surface control unit. The surface control unit determines the relative severity of such dysfunctions and the corrective action required to alleviate such dysfunctions based on programmed instruction and then displays the nature and extent of such dysfunctions and the required corrective action as a display for use by the operator. The programmed instructions may contain models, algorithms and information from prior drilled boreholes, geological information about subsurface formations and the borehole drill path. In an alternative embodiment, the present invention provides an interactive system which displays dynamic drilling parameters for a variety of subsurface formations and downhole operating conditions for a number of different drill string combinations. The system is adapted to allow an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.