Patent · US Active

Method and apparatus for sealing an annulus around a drill-pipe when drilling down-hole

US10443342B2 · kind B2 · utility

1Cited by

7References

20Claims

0Family size

Assignee

STATOIL PETROLEUM AS · NO

Inventors

Morten Eidem · Trondheim, NO
Rune Haugom · Bergen, NO

Key dates

Filing date	May 20, 2016
Grant date	Oct 15, 2019
Priority date	—
Expiry date	May 20, 2036

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B34/142
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A method of sealing an annulus around a drill-pipe when drilling down-hole includes providing a deflated packer on a drill-pipe when drilling down-hole; opening one or more ports to the packer using a ball-activated valve; and circulating drilling fluid to inflate said packer through said one or more ports, to thereby form a seal in the annulus around the drill-pipe. An apparatus to carry out this method is also provided.

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