NOVEL DOWNHOLE CAPILLARY INJECTION SYSTEM SOLVES DIFFICULT CHEMICAL TREATMENT PROBLEMS

Batch inhibition treatment to remediate corrosion or scale problems ca n be very inconvenient for operators of oil and gas wells, If the trea tment is nor performed properly, chemicals can damage or impair the fo rmation. The effective life of tile treatments is often shorter than d esired and is difficult to monitor. Equipment has been developed to ru n concentric-capillary tubing to depths of approximate to 18,000 ft wi thout interrupting production. A method has also been developed to eff ectively treat wells with electric submersible pumps well before the p rimp intake to ensure mixing of chemicals with the production fluids p rior to pomp entry. Modification of producing wells with this experime nt allows precise continuous chemical treatment (as much as 75 bbl/day to as little as 1 pint/day) bt the required depth. Treatment of wells below the packer ensures that the entire tubing string receives inhib ition.