Coring takes sediment or rock samples by drilling …...Coring takes sediment or rock samples by...
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Coring takes sediment or rock samples by drilling and returning them to Chikyu. Standard core samples are 9.5 m long, and they are moved from the rig floor to the core cutting are, where they are cut into 1.5 m sections for analysis. How core samples are collected How core samples are collected ① Taking cores ② The core barrel is removed from the drill pipe ④The core liner and core samples are cut every 1.5 m Run core bit down to where coring is planned to begin. 1 Drop the inner core barrel from the rig floor, down through the center of the drill pipe. 2 As the coring bit advances, core samples are collected into the coring barrel. 3 The coring barrel with the core samples are returned to Chikyu by wireline. 4 ←Drillers house → ←The core barrel is opened, and the plastic core liner, containing the core sample, is removed. Work space Work space Work space Work space ③ The core liner is moved to the core cutting area The design here prevents the drilled core from falling out of the bottom of the drill bit. Core samples are returned to Chikyu through the drill pipe. Assistant driller in drillers house operates wireline. Driller in drillers house operates drilling equipment. JAMSTEC / CDEX
Transcript of Coring takes sediment or rock samples by drilling …...Coring takes sediment or rock samples by...
Coring takes sediment or rock samples by drilling and returning them to Chikyu. Standard core samples are 9.5 m long, and they are moved from the rig �oor to the core cutting are, where they are cut into 1.5 m sections for analysis.
How core samples are collectedHow core samples are collected
①Taking cores ② The core barrel is removed from the drill pipe
④The core liner and core samples are cut every 1.5 m
Run core bit down to where coring is planned to begin.
1Drop the inner core barrel from the rig �oor, down through the center of the drill pipe.
2As the coring bit advances, core samples are collected into the coring barrel.
3The coring barrel with the core samples are returned to Chikyu by wireline.
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←Drillers house→
←The core barrel is opened, and the plastic core liner, containing the core sample, is removed.
Workspace Workspace
Workspace
Workspace
③ The core liner is moved to the core cutting area
The design hereprevents the drilled core
from falling out of thebottom of the drill bit.
Core samplesare returned toChikyu through
the drill pipe.
Assistant driller indrillers house
operates wireline.
Driller in drillershouse operates
drilling equipment.
JAMSTEC / CDEX
