Water plugging technological tubular column for sealing middle layer and exploiting two ends of oil well

The utility model discloses a water plugging technological tubular column for sealing a middle layer and exploiting two ends of an oil well, which is designed to realize the purposes that the tubular column while plugging a middle water outputting layer section can avoid affecting the following lower-layer well washing and liquid level test and can be salvaged and taken back if necessary. The tubular column is mainly composed of a pipe plug, a hydraulic anchor, a tubing nipple, a wedged expander, branch pipes and oil pipes, all of which are connected. The wedged expander is provided with a central pipe with a liquid flow port; a rubber barrel is sleeved outside the central pipe; and the two ends of the central pipe are connected with a compression ring. A bellows-shaped expandable liner tube is sleeved on the technological tubular column; and a rubber sealing ring is sleeved at the place where the shrinkable neck of the bellows is. The water plugging technological tubular column for sealing the middle layer and exploiting the two ends of the oil well, disclosed by the utility model, can be applied to the oil well in which water is discharged at the middle layer section and exploitation is performed at two ends while the middle layer is plugged, not only can avoid the problems of short useful life and great risk when machinery is used for plugging water, but also can avoid pollution to an oil layer and unrecoverable damage to the oil layer caused by the use of chemical water plugging.