Oilfield operation using a drill string
US10087752B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2016 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Nov 9, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/001
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Collecting temperature data at a plurality of locations along a wellbore, performing thermo-mechanical simulations of a drill string in response to mud circulation wherein the drill string comprises a tool string suspended in the wellbore from a pipe string, determining changes in length of the pipe string due to temperature changes, positionally fixing the tool string at one of the locations, and adjusting the length of the pipe string based on the determined change in length of the pipe string. Positionally fixing the tool string may comprise lowering the drill string a side entry sub of the drill string is proximate a top end of the wellbore wherein the side entry sub is configured to allow a wireline cable to enter a bore of the drill string, positioning the side entry sub above a blow-out-preventer, and closing the blow-out-preventer around the drill string below the side entry sub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.