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TableĀ 1 Key techniques for sampling deep sea sediments

From: Review and Analysis of Key Techniques in Marine Sediment Sampling

Samplers Performances parameters Sealing techniques Pressure-retaining techniques Temperature-retaining techniques Low disturbance techniques No pressure-drop transfer technique (Yes/No)
Core length (m) Core diameter (mm) working pressure (MPa)
DSDP-PCB 6 57.8 35 Steel-on-steel and valve PRT N/A DLTS,STST No
ODP-PCS 1 42 70 Steel-on-steel and valve PRT N/A DLTS, Gap between the DLTS Yes
FPC 1 58 25 Piston and flap PRT PTRT DLTS, Piston structure No
HRC 1 50 25 Piston and flap PRT PTRT DLTS, Piston structure No
PTCS 3 66 30 Steel-on-steel and valve PRT ATRT DLTS, STST No
Hybrid PCS 3.5 51 35 Steel-on-steel and valve PRT PTRT DLTS, STST No
MAC 0.55 100 14 Piston and flap PPRT PTRT Piston structure, Special cutter, Core catcher No
DAPC 2.5 84 20 Piston and ball valve PPRT PTRT Piston structure, Special cutter, Core catcher No
HPTC 3.5 54 35 Double ball valve PRT PTRT Special cutter, Rotary sampling, Core catcher No
MDP 1.3 45 20 Steel-on-steel and flap PRT N/A Special cutter, Core catcher No
TRC 0.5 48.5 60 Double ball valve PPRT N/A DLTS, Diamond drilling tool No
PIC 12 65 30 Piston and flap PPRT N/A Special cutter No
MHPIC 0.29 69 70 Steel-on-steel and flap PPRT PTRT Special cutter No
HPTP 11.2 104 30 Steel-on-steel and flap PPRT PTRT DLTS, BHA No
PRMSC 0.073 300 60 Double ball valve APRT PTRT Piston structure, Special cutter No
HBFC 0.052 100 30 Double ball valve PRT PTRT DLTS, BHA No
IVBP N/A N/A N/A Ice seal PRT ATRT DLTS, BHA No
  1. PPRT: Passive pressure-retaining technique with external accumulator; APRT: Active pressure-retaining technique with external accumulator; PRT: Pressure-retaining technique with internal accumulator; PTRT: Passive temperature-retaining techniques; ATRT: Active temperature-retaining techniques; DLTS: Double layered tube structure; STST: Smooth thin-wall sampling tube; DSDP-PCB: Deep Sea Drilling Project-advanced piston corer; ODP-PCS: Ocean Drilling Program-PCS; FPC: Fugro pressure corer; HRC: hydrate auto-clave coring equipment rotary corer, PTCS: pressure temperature coring system; MAC: multiple autoclave corer; DAPC: dynamic autoclave piston corer; HPTC: high pressure temperature coring system; MDP: MeBo Druckkern Probennehmer; TRC: tight rock corer; PIC: pressure and insulation corer; MHPIC: manipulator holding PIC; HPTP: hydraulic pressure and temperature preservation corer; PRMSC: pressure-retained multi-tube sediment corer; HBFC: hole bottom freezing corer for gas hydrates; IVBP: wire line ice-valve-based pressure corer