Offshore Downhole CPT and Its Equipment Developed

摘要

Based on the downhole technology and the Scheme for offshore Cone Penetration Test, the equipment was developed which could work steadily from 10m to 100m below the sea level and penetrate to the maximal depth of 120m. The hard cores of the offshore CPT system: Internal Penetration Assembly, Seabed Base and the penetration speed control also were explicated. In the dock and seabed test, the equipment could perform the CPT operation normally according to the downhole technology and get the CPT data of the seabed stratum, so the scheme was designed rationally and the equipment achieved the offshore CPT technology.