Coring Methods

D/V JOIDES Resolution

• JOIDES Resolution overview
• Active Heave Compensator (AHC): used to reduce the effect of vertical ship heave on the drill string and coring tools
• Bottom-Hole Assembly (BHA)
• Vibration Isolated Television Frame (VIT)
• Rig Instrumentation System and Load Pins (RIS): data acquisition system with the ability to present real-time data and drilling parameters in digital and graphical formats

Coring Tools

• Advanced Piston Corer (APC): used in soft ooze and sediments
• Rotary Core Barrel (RCB): used in medium to hard crystalline sediments
  • Sonic Core Monitor (SCM)
• Extended Core Barrel (XCB): used in firm sediments
• Advanced Diamond Core Barrel (ADCB): used in hard sedimentary or igneous formations
• Motor Driven Core Barrel (MDCB): Used in interbedded materials and hard fractured rock
• Pressure Core Sampler (PCS): used in sediments while maintaining in situ pressure
• Core Bits

Reentry Hardware

• Drill-In-Casing (DIC) System: used to drill in a short casing string simultaneously with the bit to support an unstable sediment zone
• Free Fall Funnel (FFF): used to reenter a hole
• Hard Rock Base (HRB): Used to focus the direction of the drill bit into hard irregular seafloor surfaces
• Hard Rock Reentry System (HRRS): used to install casing with reentry capability on a sloping or rough hard rock seafloor
• Reentry Cone and Casing (RECC): used as a permanent seafloor installation (or legacy hole) able to support nested casing strings
• Underreamers, Bi-Center Reamers, and Mud Motors

Downhole Tools

• Logging tools
• Advanced Piston Corer Temperature (APCT): used to obtain formation temperatures to determine the heat flow gradient
• Davis-Villinger Temperature Probe (DVTP): used to take heat-flow measurements in semiconsolidated sediments that are too stiff for the APCT
• Water Sampling Temperature Probe (WSTP)
• Instrumented Water Sampler (IWS): formation fluid sampling tool
• Drilling Sensor Sub (DSS): used to record drilling parameters (weight on bit, torque on bit, etc.)

Wireline Tools

• Conical Side Entry Sub (CSES)
• Lockable Float Valve (LFV)
• Hard Rock Orientation (HRO)
• Mechanical Bit Release (MBR): designed to remotely release the RCB core bit from the BHA to allow logging tools to pass through

Completion Tools for Long-Term Observatories

• CORK Borehole Observatory: used to characterize subseafloor hydrology over an open formation interval
• Advanced CORK (ACORK) Borehole Observatory: used to isolate zones in a borehole for independent zone investigation
• Borehole Instrument Hanger (BIH): used to support tool strings
• Packers: used to seal the annular space between the drill string and the borehole wall
• Reamers: used during casing installations to drill an enlarged hole