Patent · US Expired

Sub apparatus with exchangeable modules and associated method

US6837314B2 · kind B2 · utility

33Cited by

24References

25Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

Volker Krueger · Celle, DE
Wolfgang E. Herberg · Waggum, DE
Gunnar Bothmann · Celle, DE
Matthias Meister · Celle, DE
Sven Krueger · Trossingen, DE

Key dates

Filing date	Mar 18, 2002
Grant date	Jan 4, 2005
Priority date	—
Expiry date	Mar 18, 2022

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B49/10
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The present invention is an apparatus and method for use in a well borehole drilled into a formation. The apparatus comprises a work string disposed in the borehole. The work string includes at least one modular body portion having at least one receptacle. A modular tool is disposed in the at least one receptacle for carrying out a drilling operation. The modular tool may be a tool for use in drilling a well borehole, it may be a tool for testing a formation surrounding a borehole, or the modular tool may be a combination. For example, one aspect of the present invention provides a modular steering rib. The modular steering rib may also include modular components for sampling and testing formation fluid.

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