Oxygen activation water-locating: it refers to running the logging instrument to the end of the horizontal well by hydraulic means, and completing logging under normal production conditions.
Horizontal well water control: it refers to after the horizontal section is sealed in stages, using water control cell, packer, sleeve and valves to control water.
Horizontal well water shutoff: it refers after the horizontal section is sealed in stages, squeeze in sealing material through stage packing and squeezing tool to seal flooding section.