Summary of Drilling Sampling Tech. at Special Sightseeing Areas in West China

Abstract:

Being dead against the problems of high altitude, rugged topography, sophisticated geological conditions, severe natural conditions, remote geography location and inconvenient traffic in special sightseeing areas of west China, the researchers and engineers in our country developed, through several year efforts, a batch of drilling techniques suitable for special sight area, including air combined drilling technology, water well drilling technology with foam pressure increase, complicated formation sample drilling technology, hydraulic down hole hammer drilling technology, sampling rig and drilling techniques in special formations, environment drilling techniques, water save drilling technology, geological disaster control technology, memory multi-shot deviation measurement device, and so on. The work principles of above technology, research advancement and achievement were introduced briefly.