Oil Well Cement Additives
Additives are chemical compounds, which added in small quantities to change the physical properties of cement slurry and/or of the set cement. Most cementing chemical additives are available either in solid or liquid form. Most of the cement additives available at present have been developed by specialized cementing Companies, although increasingly products from independent chemical manufacturers are offered to the oil and gas Industry.
Products to shorten the thickening time of the cement slurry and to accelerate strength development in situations where low temperatures would lead to excessive waiting-on-cement times. The most commonly used accelerators are calcium and sodium chloride in dosages of 2%-4% and 5%-10% by weight of cement (bwoc) respectively, dissolved in the mix water.
Aluminum sulphate is a very effective accelerator, which needs to be moderated by adding ferrous sulphate. However its thixotropic effect makes it less attractive for most applications as this will adversely affect displacement and leads to unacceptably high ECD in Drilling, potentially inducing circulation losses or fracturing.
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At Smartech we are producing oilfield products for more than 15 years as local partners with global chemical manufacturers, we propose or share with our customers a lot of technology and we appreciate them, we also signed NDA so it is our responsibility to keep secret for all their information.
In 2014 Smartech had received Supplier performance stated: business requirement. In this regard, we have the pleasure to inform you that your performance for the year 2014 has rated as "Very good”, We hope you will continue with your achieved performance rate in the current year 2015 and we hope that our business relations with you will continue for the coming years.
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