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Silicate scaling has becomes the major problem in oil and gas industry nowadays. The production of oil and gas is affected because of this silicate scaling as the production is stop to remove the scale from the equipments, which need a lot of money and time consuming. Usually, the silicate scale is removed by using the mechanical work that is physically removing the scale from the equipments. Thus, an inhibitor is created to prevent or slowdown the formation the silicate scaling by using chemical. The use of chemical as the inhibitor created new problem to environment, so study on green inhibitor is done to reduce the use of chemical in silicate scaling inhibitor. The reactions of minerals after the flooding of alkaline surfactant polymer (ASP) cause silica deposition. The factors such as concentration of magnesium ions and calcium ions, temperature and pH value associate the formation of scale. Five of types of plants have been identified to be test as the green inhibitor to prevent or slow down the scaling. The plants are 1) Psidium Guajava (Jambu Batu) 2) Centella Asiatica 3) Persicaria odorata (Kesum) and 4) Orthosiphon Stamineus (Misai Kucing). These plants have a good potential as the green inhibitors as they have a lot of benefits in medical practice and abundant in Malaysia. Suitable experiments are conducted to determine the efficiency of this green inhibitor in mitigating silicate scale. Three sets of test have been carried out to determine the potential green inhibitor to mitigate the silicate scale. The tests are 1) Test at different pH values to investigate the tendency of silicate scale to form. 2) Test at different concentrations of inhibitor to determine how the concentration effect the performance of inhibitor. 3) Performance test of Orthosiphon Stamineus and Centella Asiatica as inhibitor to mitigate silicate scale. The green inhibitors show a good potential to become alternative inhibitor for silicate scale, but further studies should be done to explore more their potential as green inhibitor.

Item Type: Final Year Project
Academic Subject : Academic Department - Petroleum Geosciences - Petroleum Engineering - Reservoir Engineering - Basic reservoir engineering
Subject: T Technology > T Technology (General)
Divisions: Geoscience and Petroleum Engineering
Depositing User: Users 2053 not found.
Date Deposited: 19 Nov 2013 11:13
Last Modified: 25 Jan 2017 09:38
URI: http://utpedia.utp.edu.my/id/eprint/10710

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