Multifunctional horizontal well completion tubular pile device

2009 
The invention relates to a multifunctional horizontal well completion tubular pile device, which comprises a screen pipe, an internal washing pipe, a washing tool and a suspended type packer, wherein one end of the screen pipe is connected with the suspended type packer, while the other end is connected with the washing tool; the internal washing pipe is inserted in a sand-protection tubular pile consisting of the packer and the screen pipe; and the lower end of the internal washing pipe is inserted in the washing tool in a sealed mode. The multifunctional horizontal well completion tubular pile device finishes the processes of mud-replacement, acid washing and well completion through only one time, thus the cost is relatively low, the screen pipe well completion mode is optimized, and an annular space outside the pipe can be separated by the suspended type packer to effectively prevent well slough with higher seepage area.
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