Center for Deep Earth Exploration, JAMSTEC | CHIKYU TECHNOLOGY DEVELOPMENT

1. New enhanced core barrel

High-temperature environment Core barrel

Develop high-temperature-resistant core barrel (300°C)

Turbine Driven Coring System (TDCS)

Develop turbine-driven wire-line core barrel with higher rpm and less weight-on-bit

Ultra-hard diamond bit

Develop new PDC bits (Polycrystalline Diamond Compact Bit) for ultra-hard formations

EVCS (Extended Vibration Coring System)

Develop core barrel for unconsolidated sand layers
2. Ship motion compensation system

Develop new control technology
3. Ultra-deep drilling drill pipe

Develop high-tension steel, high strength 12,000 meter-class drill pipe, tool-joint, new fatigue life estimation methods, etc.
4. Directional control coring technology

Turbo-Corer

Develop directional coring control system with turbine motor turning only the tip of bottom hole assembly

Measurement While Coring (MWC) and Logging While Coring (LWC) Systems

Develop directional coring control technology for vertical drilling in complicated geological layers of ultra-deep holes
5. Casing for Ultra-deep hole drilling

Expandable Casing Pipe

Develop Expandable Casing Pipe to protect the wall surface of ultra-deep holes
6. New drilling fluid for high temperature

Develop temperature tolerant drilling mud and waste-mud/cuttings disposal technology