Long-rubber-barrel differential pressure type water filling packer capable of washing well
A pressure difference type, long rubber tube technology, applied in the direction of flushing wellbore, sealing/packing, wellbore/well parts, etc., can solve the problems of complex structure, setting seal, well washing impediment, etc., to achieve reasonable structural design, Highly functional effect
Inactive Publication Date: 2015-05-27
DRILLING TECH DEV CO LTD OF TIANJIN DAGANG OILFIELD PETROLEUM ENG INST +1
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Provided is a long-rubber-barrel differential pressure type water filling packer capable of washing well. For overcoming the shortcomings of set sealing after well washing, non-tight sealing, blocked well washing, complicated structure and poor well washing mode caused deblocking of an existing long-rubber-barrel differential pressure type water filling packer during well washing. The long-rubber-barrel differential pressure type water filling packer comprises a seat seal assembly, a rubber barrel seal assembly, a well washing assembly and deblocking device, wherein an upper connector, an upper central pipe, a bridge type connecting sleeve, a lower central pipe and a lower connector are sequentially and fixedly connected from top to bottom to form a fixed tubular column, and the well washing assembly is installed on an upper central pipe between the upper connector and the axial direction of the bridge type connecting sleeve. The seat seal assembly is installed between the lower end of the bridge type connecting sleeve and the axial direction of the lower connector. The rubber barrel seal assembly is installed on an outer circle of the outer central pipe of the seat seal assembly. The long-rubber-barrel differential pressure type water filling packer has the advantages that the long-rubber-barrel differential pressure type water filling packer is reasonable in structural design, the seat sealing, well washing, sealing, deblocking functions are independently designed, opening and closing of a well washing valve can be controlled through well mouth operation, and the best effect of separated layer water injection is achieved.
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