7 The surface intervals will be drilled with the seawater and gel sweeps.
7 The surface intervals will be drilled with the seawater and gel sweeps.
表层采用海水钻进及稠泥浆进行清扫。
7 The surface intervals will be drilled with the seawater and gel sweeps.
表层采用海水钻进及稠泥浆进行清扫。