Development of rotary core drilling bits for the deep sea drilling project

Conference · Sat Jan 01 04:00:00 EST 1972 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:6242841

Garner, L L; Maxwell, T E

The Deep Sea Project has entailed the drilling and coring of deep ocean sediments with short sections of basalt and chert basement rocks from the drill ship Glomar Challenger. Cores of the soft sediments and hard basement rocks have been successfully drilled with excellent core recovery in water depths exceeding 20,000 ft. A variety of core bit cutting structure designs were required to drill and core both the unconsolidated soft sediments and the hard chert and basalt sections. To date, 12 rotary core drilling bit designs have been tested on the Glomar Challenger. The results of each design tested are discussed. The present state-of-the-art in rotary core drilling bit design is presented and the major areas of needed improvement are discussed. Areas of improved design that are needed are stabilization, improved sintered tungsten carbide insert cutting structures, sealed bearings, and general rotary core drilling bit design.

• Research Organization: Smith Tool Co; Sun Oil Co
• OSTI ID: 6242841
• Report Number(s): CONF-7205124-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: 2:OTC-1701
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
423000 -- Engineering-- Marine Engineering-- (1980-)
CARBIDES
CARBON COMPOUNDS
DESIGN
DRILL BITS
DRILLING
DRILLING EQUIPMENT
ENERGY SOURCES
ENGINEERING
EQUIPMENT
EXPLORATION
FOSSIL FUELS
FUELS
OFFSHORE DRILLING
OIL WELLS
PETROLEUM
ROTARY DRILLING
STABILIZATION
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN CARBIDES
TUNGSTEN COMPOUNDS
WELLS