Patent · US Active

Creep determination technique

US7475486B1 · kind B1 · utility

2Cited by

7References

17Claims

0Family size

Assignee

SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

Peter Fitzgerald · Paris, FR
Torbjørn Tellnes · Bergen, NO

Key dates

Filing date	Aug 21, 2007
Grant date	Jan 13, 2009
Priority date	—
Expiry date	Oct 3, 2027

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B47/04
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A method for determining an amount of creep for a tool on a cable and positioned in a well at an oilfield. The method includes moving a winch at a surface of the oilfield to effect movement of the tool below the surface in the well. The winch may then be stopped with the tool still in the well, but frequently the tool will continue to move, or “creep”, for some time after the winch is stopped. After the winch is stopped, data may be recorded indicative of movement of the tool. This data may then be used for the determining of the amount of creep.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.