Patent · US Active

Bell nipple assembly apparatus and methods

US9476279B2 · kind B2 · utility

4Cited by

11References

22Claims

0Family size

Assignee

NABORS DRILLING INTERNATIONAL LIMITED · BM

Inventors

Sean Bailey · Emeryville, US
Padira Reddy · Richmond, US

Key dates

Filing date	Jul 15, 2013
Grant date	Oct 25, 2016
Priority date	—
Expiry date	Mar 17, 2035

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B21/01
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An apparatus including a bell nipple assembly defining a first internal passage that includes two sections forming first and second internal passages that may be aligned by a flexible connector disposed between first and second flanges in one of the sections to at least partially adjust for an offset amount caused by longitudinal axis misalignment of the other section. Methods of adjusting for longitudinal axis offset between two misaligned components, such as of a bell nipple zone, are also encompassed.

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