为了刮蜡，刮蜡片上有一个与油管相配合的环。
The paraffin knife has a ring that fits the tubing to scrape the paraffin.
用机械刮蜡片或刮蜡器、溶剂、化学剂、热量或者细菌，去除井内油管中的蜡。
The removal of wax from tubing in a well by mechanical knives or scrapers, solvents, chemicals, heat, or bacteria.
用机械刮蜡片或刮蜡器、溶剂、化学剂、热量或者细菌，去除井内油管中的蜡。
The removal of wax from tubing in a well by mechanical knives or scrapers, solvents, chemicals, heat, or bacteria.
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