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FAQ

How fast is Samascav able to removal of H2S?

The reaction with Samascav and H2S is instant once contact is made. RSH reaction time can take longer depending on the RSH species. Typically, the treatment time required is more a function of the efficiency of the application and nature of the asset that is being treated.

Are light thiols or other sulphur compounds affected or only H2S?

All sulphur compounds react with Samascav.

What is the level of Effectiveness of Samascav to remove H2S / RSH in the liquid phase?

4000 mg/L (combined H2S & RSH) in liquid phase was tested and was successful. No upper limit has been established.

How do you remove the used and unused Samascav from Fuel Oil?

The product is 100% miscible with water and this is a SINGLE PHASE system only. In liquid hydrocarbon applications, the sulphates, which are created by Samascav, stay in the water phase and are separated from hydrocarbons during normal separation.

What is the effect of the scaling potential of the system?

Samascav will slightly increase the pH of the water; therefore, analysis has to be carried out to determine the effect of this increase in pH, particularly where there are high levels or suspended solids or calcium carbonates in the produced water.

What is the potential of scaling with the reacted or un-reacted Samascav?

NONE. - No potential scaling in ordinary environments. The increase of SO4-2 in the water phase will depend on the mole-mole equilibrium between quantity of H2S / RSH and Samascav. Cations such as Barium, phosphorous and others associated SO4-2 deposits once it has reached maximum solubility. Excess Samascav will not cause any deposits.

Do you use an air oxidiser? If so, how can you ensure that you have enough O2 under anaerobic conditions?

No, enclosed system; hence no Oxygen ingress.

What is formed at higher temperatures?

? It does not decompose thermally within the operating temperature range up to 300 Deg. C

Did you find increased sulphate levels in the water after treatment?

Yes - the amount of increase is directly related to the amount of H2S / RSH treated by the chemical.

How effective does the mixing have to be?

No special mixing tooling required with water but for optimal results, it is recommended to always inject at the inlet of the inline / transfer pump. In gas lines, inject with sprayer nozzle under positive pressure. For heavy crudes and HSFO, it is recommended to inject as early as possible or at pump inlet to ensure efficient mixing.

How fast or complete is the phase separation afterwards?

There is complete separation from the hydrocarbon phase, and the speed of the separation can be adjusted by adjusting the specific gravity of the chemical.

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About the company

SMARTEX DF is a leading national company that supplies drilling fluids and provides all associated services. The company was founded in 2008 in response to growing demand for domestic suppliers of drilling fluids in accordance with RK Law "On Kazakh Content".

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