CI – S1H2S
H2S scavenger is a proven inhibitor aid for use in hydrochloric acid in treating sour wells which contain hydrogen sulfide gas. H2S may be present in stimulation fluids due to the dissolution of sulfide scale (mainly Iron Sulfide) or contact with sour well fluids. This chemical is a sulfide complexing agent which is designed to control sulfide cracking of tubular and precipitation of free sulfur when acidizing oil and gas wells that contain hydrogen sulfide or iron sulfide deposits. It is often used in conjunction with other iron controlling agents. Normal concentration range for this additive is 0.5 to 3.0 volume percent (5 to 30 gallons per 1000 gallons acid).
CI – SURF 21
Surfactants reduce the surface tension and/or interfacial tension between fluids, between fluid and formation, and between fluid and tubular surfaces. Their use is common in all types of treating fluids. Surfactants aid in formation cleanup through their ability to prevent emulsions, reduce surface and interfacial tension, and alter wett ability. This surfactant is an effective surface tension reducer designed to be used in water-base fracturing fluids and acid solutions. It has proven to be effective in gas producing wells for providing more rapid and complete recovery of the treating fluids. This surfactant is cationic and compatible with most stimulation additives and has the property of water-wetting both sand and limestone formations. Low concentrations (0.1 to 0.6 volume percent) reduce surface and interfacial tension, enhancing cleanup and reducing flow-back time.
CI – MUS 11
Mutual solvent, commonly known as glycol ether, that is soluble in both hydrocarbon and aqueous solutions. As a mutual it is soluble in oil, acid and water.
It will effectively penetrate as deep in the formation as the treating fluid. It tends to dissolve the oil film on fines released by the reaction of the acid on the formation. This leaves the fines and formation pore surfaces water wet. Formations that are water wet have little tendency to stabilize emulsions.
It typically is used in acid stimulation applications as a surface tension reducer and water-wetting agent. The recommended concentration is 2%-20% in HCl acid systems.
This also helps to prevent excessive adsorption of surfactants and corrosion inhibitors by keeping them in solution.
CI – SSA 1
Silt Suspending Agent Is an anionic, nonionic surfactant that can be used in most acid-treating solutions and fracturing fluids to suspend insoluble fines. Surfactants reduce the surface tension and/or interfacial tension between fluids, between fluid and formation, and between fluid and tubular.
Their use is common in all types of treating fluids. Surfactants aid in formation clean up through their ability to prevent emulsions, reduce surface and interfacial tension, and alter wettability.
Blend of sufactants in an aqueous alcohol solvent system that reduces surface and interfacial tension of both acid and water systems. Disperses mud particles in hydrochloric acid (HCl) treatments. Normal concentration is 1 to 30 gal/1,000 gal (0.1 to 3 volume percent).
CI – IC 60
Ferric hydroxide causes formation damages and consequently reduces the permeability and is a potential problem during any acidizing treatment.
This iron control agent is used in a wide variety of application where iron control is required. CI-IC 60 is the most economical and efficient chelating agent for controlling iron and can be used in all acid solutions including 15-28% HCl and HCl-HF systems. It controls Iron ions in the live and spent acid to help preventing the precipitation of iron in the acid solution. Surfactants and mutual solvents can be added to the acid solution in the normal way. The concentrations can be doubled when treating formations containing Siderite or a high concentration of soluble iron. Normal concentration is 5 to 30 gal/1,000 gal (0.5 to 3 Volume percent).
Iron control Prevents the precipitation of iron compounds from acid solutions, restoring permeability and therefore fluid production following acid stimulation treatments.
CI – MULTI 40
Multifunctional additive is a blend of anionic and nonionic surfactants, a glycol and selected alcohols designed to minimize sludge precipitation and mitigate corrosion in low temperature acid stimulation applications. It is an anti-sludge, non-emulsifier and corrosion inhibitor.
This product is a balanced, multipurpose package formulated with multifunctional, corrosion inhibitor and non-emulsifier components.
As with other multifunctional additives, a precise loading level should be predetermined by testing the package with well fluids that will be contacted during the application. Generally, 2 to 20 gallons per 1000 gallons of acid (0.2 to 2 volume percent) has proven to be effective.
CI – NE 51
This surfactant is a blend of nonionic and anionic surface active agents for use as a non-emulsifier in acid or water base stimulation treatments. It is compatible with all acid corrosion inhibitors in a variety of hydrochloric acid mixtures. Non-emulsifier is specifically designed to treat and/or prevent acid-in-oil or water-in-oil emulsion which commonly occur during well stimulation. Normal concentration for this additive is 1-10 gal/Mgal of acid solution (0.1 to 1 volume percent).
CI – AS 33
Anti-sludge agent prevents the formation of stable emulsion and asphaltene sludge deposits when acids like HCl acid solutions come into contact with reservoir crude oil during acidizing treatments. Typical range of concentration is 5 to 25 gallons per thousand gallons of acid solutions (0.5 to 2.5 Volume percent).