Mitigation of formation damage by designing a novel nanoparticles mud
Petroleum & Energy Engineering Department
Oil Gas European Magazine
Formation damage is caused by the invasion of foreign fluids and/or solids into the exposed section adjacent to the wellbore. Generally, the drilling mud is the main source of such contaminants. The mud column pressure must exceed that of the formation. Hence the mud filtrate flows radially outward and interacts with the formation contents. Because of the complex nature of interactions, effective resolution of damage problems requires the combined efforts of engineers, geologists, and laboratory personnel to design anew version of mud to mitigate the damage. The article presents a way to mitigate the formation damage due to drilling operation by designing a new nano drilling mud, which has the ability to minimize the mud filtrates. Three different sizes of silica nanoparticles are used in conducting these experiments. Further experiments are conducted on the optimum size to investigate the optimum concentration. Of course these results were compared with an industry standard polymer-based fluid loss additive. The changes in rheological properties of the mud are also studied along with the fluid loss values. Finally, it is found that using any of the nano silica sizes under study is better than using polymer-based mud. The optimum nano size is 5-15 nm (size 1). The most economic and yet effective concentration of nanoparticles is the range between 0.27 and 0.40% wt/wt, which leads to a 56% reduction in fluid loss in comparison with the base fluid. Â© 2014 URBAN-VERLAG Hamburg/Wien GmbH.
Salem Ragab, A.
(2014). Mitigation of formation damage by designing a novel nanoparticles mud. Oil Gas European Magazine, 40(2), 104–109.
Salem Ragab, A. M.
"Mitigation of formation damage by designing a novel nanoparticles mud." Oil Gas European Magazine, vol. 40,no. 2, 2014, pp. 104–109.