CleanOxide usage in Oil and Gas
Injecting chlorine dioxide into a well is an established technique for removing sulphides and sulphates from oil and gas wells.
CleanOxide Chlorine Dioxide is a practically pure solution of chlorine dioxide. It rapidly oxidises the naturally occurring iron compounds, and is also effective at breaking up and removing organic solids and added polymers.
Sulphides are formed by the action of sulphate reducing bacteria found in oil well systems. The sulphides react with iron in the water to form insoluble iron sulphide that in conjunction with bacterial biofilm acts as a plugging agent. CleanOxide 75 is a practically pure solution of chlorine dioxide – one of the most powerful and safe disinfectants known as well as a highly effective oxidising agent for converting sulphide to sulphate, thus providing a method of simultaneously controlling sulphur reducing bacteria and removing sulphides.
The presence of sulphides also causes what is known as sour crude which is of lower quality and more expensive to refine. Controlling sulphide levels in oil and gas wells is not only necessary for ensuring a higher quality product and to minimise plugging, it is also necessary for the protection of personnel from exposure to extremely toxic hydrogen sulphide gas.
How CleanOxide Chlorine Dioxide is used
CleanOxide 75 can be used in place of or in addition to conventional biocides to control bacteria in drilling mud and hydraulic fracturing fluids, downhole cleaning of injection and disposal wells, and as an emulsion breaker.