Oil jacket pipe UNICOM ware that layering fracturing string used

The utility model provides a there is the valve port in the lower part that oil jacket pipe UNICOM ware that layering fracturing string used, the upper end top of sliding sleeve is on the inside circular bead of connector, and spring suit is on the sliding sleeve, and the up end of spring supports the foreign radio's shoulder -mounted at the sliding sleeve, and the case is installed to the bottom intermediate position of sliding sleeve, and there is the UNICOM hole bottom surface of sliding sleeve, and the upper portion of valve body and the sub -unit connection of connector make the lower terminal surface of spring support on the inside circular bead of valve body, the valve body the liquid stream that comes from upper portion can be blocked with the case cooperation is sealed to the valve port, the upper portion of hanging flower basket is connected on the middle screw thread of top connection, the lower part screw thread and the upper portion of connecting pipe of top connection are connected, annular space between connecting pipe and the hanging flower basket, there is the baffle bottom of hanging flower basket, there is the sieve mesh on the body, the lower part of connecting pipe is connected with the upper portion of connector, the case leaves the valve port when carrying the tubular column after the construction is accomplished, make fracturing string by the UNICOM, liquid stream in the tubular column by the earial drainage to the well in, can prevent environmental pollution, operation construction convenience.