Water-wet surfaces are known to be an important factor in a mechanism of paraffin inhibition. Previous attempts to create these surfaces with chemical coatings or plastic-lined tubing have met with limited success. A patented process1  has been developed that overcomes the problems previously associated with obtaining long-lasting, strongly water-wet surfaces downhole. This process generates heat within the tubing, converts paraffin into a water-dispersible residue and super cleans the surface of the rods and tubing. The resulting effect is a hydrophilic surface on all wellbore production equipment. This environment reduces the adhesive force of the paraffin to the rod and/or tubing surface and allows the precipitated paraffin to be produced out of the well.

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