Acid Cap Stick


ACID CAP Sticks are 100% active water-soluble tube sticks that release acid down-hole in producing, disposal, and water injection wells to remove carbonate scale and rust deposits. ACID CAPS may also lower injection pressures, drops of several hundred PSI are possible following treatments. Success has also been experienced in some producing oil wells, gas wells and water supply wells.


The best method of application for ACID CAPS is to drop the sticks directly into the well after removing the plastic wrapper. This results in a more concentrated volume of acid down hole. In a well with tubing obstructions or small valve openings, ACID CAPS may be successfully used by first dissolving the sticks in field produced or distilled water and then introducing the solution into the well.


The number of ACID CAPS to be used is based on the number of feet of perforated interval or open hole and severity of scale buildup. Field tests indicate the best results were achieved by using large initial slug treatment (.6 to 1.8 lbs of stick per foot of interval) followed by smaller periodic treatments (about half of the initial slug amount).


FormSolidMelt PointN/A
ColorTan WSTSolubility in Water100%
pH1.18Solubility in Brine100%
Specific Gravity1.23Solubility in CrudeInsoluble

Safety and Handling

Please refer to SDS prior to using this product. As with all industrial chemicals, contact with eyes or skin should be avoided. If contact with skin is made wash thoroughly with water. Pellets should be stored in a cool dry place. Always remove pellets from the container with the provided scoop while wearing rubber gloves to avoid skin contact. Goggles are advised.