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Title: Hydraulic piston coring--A new era in ocean research

Abstract

In December of 1978, the Deep Sea Drilling Project, International Phase of Ocean Drilling, deployed the first hydraulically actuated piston corer. This coring system utilized a hydraulic piston principle. Fluid was pumped through the drill pipe, activating a piston driven core barrel which was ejected into the sediment at the rate of approximately 20 feet per second. This extremely high penetration rate effectively decoupled the core barrel from the heave induced vertical motion of the drill string. On completion of each coring operation, the core barrel assembly was retrieved by wireline. The core bit was then ''washed'' down to the next coring point where the piston coring procedure was repeated. Operational tests conducted in 865 meter water depth curing Leg 64 obtained in almost totally undisturbed and complete section from a 152-meter hole along the Guaymas slope in the central Gulf of California. Variations in climate, productivity and circulation for more than 250,000 years were recorded. This paper describes the analysis, design, testing and field operation of the hydraulic Piston Coring System.

Authors:
; ;
Publication Date:
Research Org.:
Univ. of California, San Diego
OSTI Identifier:
5304445
Report Number(s):
CONF-830514-
Journal ID: CODEN: OSTCB
Resource Type:
Conference
Journal Name:
Offshore Technol. Conf.; (United States)
Additional Journal Information:
Journal Volume: 3; Conference: Offshore technology conference, Houston, TX, USA, 2 May 1983
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; CORING EQUIPMENT; DESIGN; FIELD TESTS; HYDRAULIC EQUIPMENT; OPERATION; OFFSHORE DRILLING; GEOLOGIC DEPOSITS; GULF OF CALIFORNIA; PISTONS; DRILLING; DRILLING EQUIPMENT; EQUIPMENT; PACIFIC OCEAN; SEAS; SURFACE WATERS; TESTING; 423000* - Engineering- Marine Engineering- (1980-)

Citation Formats

Storms, M A, Cameron, D H, and Nugent, W. Hydraulic piston coring--A new era in ocean research. United States: N. p., 1983. Web.
Storms, M A, Cameron, D H, & Nugent, W. Hydraulic piston coring--A new era in ocean research. United States.
Storms, M A, Cameron, D H, and Nugent, W. 1983. "Hydraulic piston coring--A new era in ocean research". United States.
@article{osti_5304445,
title = {Hydraulic piston coring--A new era in ocean research},
author = {Storms, M A and Cameron, D H and Nugent, W},
abstractNote = {In December of 1978, the Deep Sea Drilling Project, International Phase of Ocean Drilling, deployed the first hydraulically actuated piston corer. This coring system utilized a hydraulic piston principle. Fluid was pumped through the drill pipe, activating a piston driven core barrel which was ejected into the sediment at the rate of approximately 20 feet per second. This extremely high penetration rate effectively decoupled the core barrel from the heave induced vertical motion of the drill string. On completion of each coring operation, the core barrel assembly was retrieved by wireline. The core bit was then ''washed'' down to the next coring point where the piston coring procedure was repeated. Operational tests conducted in 865 meter water depth curing Leg 64 obtained in almost totally undisturbed and complete section from a 152-meter hole along the Guaymas slope in the central Gulf of California. Variations in climate, productivity and circulation for more than 250,000 years were recorded. This paper describes the analysis, design, testing and field operation of the hydraulic Piston Coring System.},
doi = {},
url = {https://www.osti.gov/biblio/5304445}, journal = {Offshore Technol. Conf.; (United States)},
number = ,
volume = 3,
place = {United States},
year = {Sun May 01 00:00:00 EDT 1983},
month = {Sun May 01 00:00:00 EDT 1983}
}

Conference:
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