Patent · US Active

Device and procedure for the insertion of a new drilling string-element into the drill-string of a well

US7845433B2 · kind B2 · utility

9Cited by

7References

8Claims

0Family size

Assignee

ENI S.P.A. · IT

Inventors

Angelo Calderoni · Piacenza, IT
Giorgio Girola · Rescaldina, IT

Key dates

Filing date	Jun 9, 2006
Grant date	Dec 7, 2010
Priority date	—
Expiry date	Jun 9, 2026

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B21/019
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A device and the relative are described, for the insertion of a new drilling string-element into a drilling-string essentially including a short pipe-shaped body (C) having, at opposite ends thereof, a device suitable for screwing the body onto drill pipes, in which two valves are housed, of which one valve (A) is radial to said short body, interceptable from the outside by means an adaptor and equipped with a suitable safety plug, the other valve (B) being axial with respect to the body.

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