Drilling apparatus including a fluid bypass device and methods of using same

US9103180B2 · kind B2 · utility

Assignee

• Baker Hughes Holdings LLC · US

Inventors

• Ingo Roders · Seelze, DE
• Thorsten Regener · Celle, DE

Key dates

• Filing date: Sep 9, 2011
• Grant date: Aug 11, 2015
• Expiry date: Jun 7, 2034

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B21/103
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

In one aspect, the disclosure provides a method of drilling a wellbore, which method, in one embodiment, includes the features of drilling the wellbore with a drill string that includes a bypass device having a fluid passage therethrough by supplying a fluid through the bypass device, wherein the drilling fluid circulates to the surface via an annulus between the drill string and the wellbore; defining a time period (locking time); initiating a selected drilling parameter; detecting downhole the selected drilling parameter and one of the second flow rate and a differential pressure; and activating the bypass device when the selected drilling parameter and one of the second flow rate and the differential pressure are present during the defined time period to divert a portion of the drilling fluid from the bypass device to the annuls. In one aspect, the selected drilling parameter is rotation of a member associated with the bypass device.