New York-to-Dakar on the deep sea drilling project

Journal Article · Tue Dec 31 04:00:00 EST 1968 · Calif. Oil World Pet. Ind.; (United States)

OSTI ID:5543060

Along with proving an awesome mechanical capability, the New York-to-Dakar run, second of 9 legs planned for Deep Sea Drilling Project (DSDP), each of some 2-mo. duration, turned up important evidence strongly substantiating the theory of sea-floor spreading, i.e., evidence that the floor of the Atlantic Ocean appears to be moving slowly away from the central or median line of the ocean, which is known as the Mid-Atlantic Ridge. Economic implications of information developed by the leg are not immediately applicable. The drill string consisted of 5-in. drill pipe with a bit or corehead selected according to the needs of the job. The number of drill collars varied, generally averaging 15. For the most part, drillers used 2 bumper subs. Weight of the drill string averaged 200 tons. Deepest penetration came at Site 9a, on the E. flank of the Bermuda Rise, where in 16,316 ft of water drillers went to 2,759 ft. recovering fragments of altered, vesicular basalt.

• OSTI ID: 5543060
• Journal Information: Calif. Oil World Pet. Ind.; (United States), Journal Name: Calif. Oil World Pet. Ind.; (United States) Vol. 61:24; ISSN COWPA
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580200 -- Geophysics-- (-1989)
580500* -- Oceanography-- (1980-1989)
ATLANTIC OCEAN
CORING EQUIPMENT
DEPTH
DIMENSIONS
DRILL CORES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
GEOLOGIC STRUCTURES
GEOPHYSICS
LEVELS
MID-ATLANTIC RIDGE
OCEANOGRAPHY
OFFSHORE DRILLING
OFFSHORE PLATFORMS
RECOVERY
SEA BED
SEA-FLOOR SPREADING
SEAS
SHIPS
SURFACE WATERS
TOPOGRAPHY
UNDERWATER
WELL DRILLING