To meet this objective, the raw CNTs as a reinforcement at three levels of 0, 1 and 2 wt% and Performance through the application of functionalized CNTs. Therefore, this study aims at strengthening the wood-plastic composites (WPCs) Maashi Sani, Fatemmeh ( ), Department of Wood and Paper Science and Technology, Sari Branch, Islamic Azad University, IranĬarbon nanotubes (CNTs) have the propensity to aggregate when mixing with thermoplastic polymers, leading to inappropriate distribution in theĬomposites and limiting the CNTs performance in polymer matrix. This novel cement formulation is suitable for using in some formation sections where the possibility ofĦ728 | Effects of Functionalized Multi-Walled Carbon Nanotubes on the Mechanical Properties of HDPE/Wood Flourįarsi, Mohammad ( ), Department of Wood and Paper Science and Technology, Sari Branch, Islamic Azad University, Iran Lower setting time and lower fluid loss of the slurry.
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Also, other advantages are also obtained with these formulations, such as lower free water, Tensile strength are improved 68% and 40% respectively. The permeability and porosity are considerably decreased over 97% and 39% respectively. The application of nanosilica combined with an appropriate change in the percentage of other additives highly benefits the rheological and mechanical Because of its extremely fine particles it was utilized toĭecrease set cement impermeability and porosity and improve rheological and mechanical properties of the hardened material. Nanosilica is a highly effective pozzolanic material. Reduction of compressive as well as tensile strength of the cement in addition to high permeability of such cement composites caused by depositionĮspecially in the lower parts of the well. Field and laboratory data confirm a rather high In addition, application of weightingĪgents are reported to cause severe inhomogeneity of the slurry due to high deposition of solid contents. These loads are likely to cause cement failure and in some cases collapse of casing string. HPHT (high pressure, high temperature) condition, these layers are prone to creep toward the borehole which may consequently result in point loads on Khalili, Reza ( ), Science and Research Branch of Islamic Azad University, Iranĭesigning an appropriate cement slurry formulation for cementing of oil and gas wells is always a big challenge, especially in evaporite layers. Maghsoudloojafari, Hosseinali ( ), Universiti Teknologi Malaysia, Malaysia Noorbakhsh, Seied Shamsallah ( ), University of Tehran, Iran 6396 | The Effects of Nanosilica on Permeability and Porosity Reduction of Cement Composites to Preventīehnaman, Hamed ( ), University of Tehran, Iran
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