Downhole force measurement
US7878266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Jan 30, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/26
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for measuring forces acting on a tubing string within a wellbore, comprising a body including a central passage and an internal void radially offset from the central passage. End portions extending from the body each include an internal passage and an interface configured to detachably couple to the tubing string for conveyance within the wellbore. A clamp is detachably coupled to one end portion, and first sensors coupled to the clamp are configured to detect strain induced by forces acting on the tubing string. At least one second sensor coupled to the body is configured to detect pressure and temperature within the wellbore. A memory device coupled to the body within the internal void is configured to log measurements detected by the first and second sensors. An electrical power supply coupled to the body within the internal void is configured to provide electrical power to the memory device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.