Patent · US Active

Tubular component for drill stem provided with a transmission sheath fixed by threadings, and method for installing said component

US9617799B2 · kind B2 · utility

3Cited by

2References

14Claims

0Family size

Assignee

VALLOUREC DRILLING PRODUCTS FRANCE · FR

Inventors

Alexandre Fraignac · Paris, FR
Francois Millet · Antony, FR

Key dates

Filing date	Oct 4, 2012
Grant date	Apr 11, 2017
Priority date	—
Expiry date	Nov 16, 2033

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B17/023
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A component for a drill stem including a tubular body with at least one first end zone and a second end zone. The component includes a sheath for passage of a cable extending inside the tubular body between the first end and the second end zone and at least one liner which lines at least a portion of the inside of the tubular body in the first end zone. At least a first end portion of the sheath includes a first threading. The liner supports a second threading. The first and second threading are screwed together.

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