JOHN HOWARD JACKSON
Pilots at Summer Way, Idaho Falls, ID
License number
Idaho A4718935
Issued Date
Dec 2015
Expiration Date
Dec 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1640 Summer Way, Idaho Falls, ID 83404
Professional information
Methods And Apparatus For Controlling Cutting Ribbons During A Drilling Operation
US Patent:
8469120, Jun 25, 2013
Filed:
Apr 21, 2008
Appl. No.:
12/594314
Inventors:
Pavlin B. Entchev - Houston TX, US
John H. Jackson - Idaho Falls ID, US
John K. Montgomery - Houston TX, US
John H. Jackson - Idaho Falls ID, US
John K. Montgomery - Houston TX, US
Assignee:
ExxonMobil Upstream Research Company - Houston TX
International Classification:
E21B 10/36
US Classification:
175393, 175 57, 175381, 175384
Abstract:
Drill bits are provided. The drill bits are of the fixed-cutter, rotary-type. The drill bits have a plurality of blades having cutting elements disposed therealong. Junk slots are formed between the respective blades. A knife opening is formed in at least two of the junk slots. Preferably, the knife openings are disposed substantially transverse to a longitudinal axis of the drill bit. The drill bit also has one or more ribbon cutters. The ribbon cutters cyclically protrude through knife openings in the junk slots in order to facilitate the fragmentation of cuttings ribbons moving through the junk slots during a drilling operation.