Downhole oil -water separation column for oil gas field development

The utility model relates to an oil -water separation technology field discloses a downhole oil -water separation column for oil gas field development in the pit, include: the profit tubular column, the separation tubular column, the float, inhale oil pipe, oil -out and delivery port, the lower part of profit tubular column is linked together through first connecting pipe with the lower part of separation tubular column, the upper portion of profit tubular column is linked together with profit mixing duct through the second connecting pipe, the oil -out sets up the upper portion at the separation tubular column, the delivery port sets up the lower part at the separation tubular column, the float sets up in the separation tubular column, it fixes on the float to inhale oil pipe, inhale oilpipe and pass oil -out and third connecting pipe intercommunication, the third connecting pipe with take out oil pipe and say and to be connected and to communicate, the delivery port is linked together with drainage pipe thr