Scale inhibitor

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Scale deposition Is prevalent in producing wells and production equipment and is a major problem to operators.  Scale deposits reduce the efficiency of the system by restricting the flow or plugging the equipment.  Scale deposits are usually deposits of inorganic salts, which decrease in solubility as a result of oxidation increase in temperature, or decomposition with increase in temperature.  The scaling components of water and corrosion by-products  are:  The 3 Most Common Scales are: Calcium Carbonate, Calcium Sulfate and Barium Sulfate

1. Barium Sulfate, BaSO4
2. Strontium Sulfate, SrSO4
3. Calcium Sulfate, CaSO4
4. Calcium Carbonate, CaCO3
5. Iron Carbonate, FeCO3
6. Combinations of the Above
   

Scale typically deposits in Elbows, Dump Valves, Baffle Plates, Downhole Pumps, Perforations, Chokes and Surface Pumps.  Hydrochloric Acid is used heavily in the oil and gas industry today primarily to cut scale build up in these pipes and assemblies. In addition, operators use acids to open reservoir pores and enhance porosity and stimulate reservoirs to increase production.

All of our scale inhibitors are water soluble, and therefore they should be added continuously to be effective.  A number of analyses can be performed on water samples to determine exactly what type of scale is deposited and id the causes for scale deposition. 

At a minimum the following analyses should be performed on water samples:

• Ph and Water Temperature at Time of Sampling
• Maximum Temperature of Surface Facility
• Temperature of Water at time of Sampling
• Alkalinity (Bicarbonates)
• Dissolved Carbon Dioxide
• Dissolved Sulfides
• Dissolved Oxygen

The lab work could then reference the Stiff Davis Index to consider barium and calcium sulfate solubilities and maximum possibilities to be listed for a final report.

Additional Analyses to run; A Wheel Test, Film Persistency Test, Rotating Cylinder Electrode (RCE) Test, Autoclave Test, Kettle or Bubble Test (Partitioning), Jet Impingement Test, Flow Loop Test, Hydrocarbon Use, Corrosion Rates, Pitting Corrosion