Optimizing journal bearing bit performance

Journal Article · Wed Oct 01 04:00:00 EDT 1986 · Drilling-DCW; (United States)

OSTI ID:5972042

Moerbe, O E; Evans, W

This article explains that continuous progress in the field of rock bit technology has produced many new designs and improved features in the tri-cone rock bits used today. Much of the research and advancements have centered around journal bearing systems, seals and lubricants leading to greatly extended bearing life. These improved bearing systems, incorporated into both tooth and insert-type bits, have not only increased the effective life of a rock bit, but have also allowed greater energy levels to be applied. This, in turn, has allowed for higher rates of penetration and lower costs per foot of hole drilled. Continuous improvements in journal bearing bits allowing them to run longer and harder have required similar advancements to be made in cutting structures. In tooth bit designs, these improvements have been basically limited to the areas of gauge protection and to application of hardfacing materials.

• Research Organization: Security Div. of Dresser Industries
• OSTI ID: 5972042
• Journal Information: Drilling-DCW; (United States), Journal Name: Drilling-DCW; (United States) Vol. 47:10; ISSN DRDCD
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
BEARINGS
COST
DESIGN
DOCUMENT TYPES
DRILL BITS
DRILLING
DRILLING EQUIPMENT
ECONOMICS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
LUBRICANTS
LUBRICATION
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
METERS
OPTIMIZATION
PERFORMANCE
REVIEWS
ROCK DRILLING
SEALS
SERVICE LIFE
WEAR RESISTANCE