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公开(公告)号：US10161224B2
公开(公告)日：2018-12-25
申请号：US15234677
申请日：2016-08-11
Applicant: CONOCOPHILLIPS COMPANY
Inventor： Dennis Ray Wilson
Abstract: Paraffin deposits from downhole tubing, pumps and valves are removed by hot water and recycling the hot water to allow continual intermittent cleaning throughout the lifespan of the well. Heated water travels down the hollow rod annulus, entering the hollow rod string through ports at the bottom, temporarily heating both strings to melt and mobilized paraffin to enable intermittent pumping paraffin and debris to surface.
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