Discussion on Under-water Cement Grouting for Coring Drilling

Abstract:

In coring drilling, under-water cement grouting was often used for wall protection, leakage blocking, borehole sealing and downhole accident treatment. The paper discussed the technology and the procedures, analyzed the causes of grouting failure and put forward the solutions.

Key words:coring drilling; cement grouting under water; wall protection and leakage blocking; borehole sealing