We need a logging system which can join a variety of downhole tools together to do such jobs as completion well, cement bond and perforation coring based on geological characters in Nanxiang basin.

The tractor for horizontal well logging is a kind of tool to convey the downhole tools in the horizontal well logging.

We develop a zonal pressure measuring technique in two reservoir commingled producing well aiming to solve the problem that we could not measure that before,and integrally design downhole instruments and tools combining the specific lifting mandrel in two reservoir commingled producing well.

Adesign method for a downhole cartridge simulator to be used in theequipment with a memory for directly storing 2PSK signal of the pattern characteristics isproposed.