Experimental Investigation for FINDING a Suitable Additive (Nanoparticle) to Design Required Elastic Cement for Iranian Oil/Gas Wells

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Khojastefar, Abdorahim | 2010

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 41060 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Taghikhani, Vahid; Soltanian, Hamid; Moghadasi, Jamshid; Samsam Sokheiravi, Mohammad
Abstract:
Previous studies indicate that increasing cement compressive strength can’t prevent loss of zonal isolation and casing collapse in worse case during well operations or formation loading. Since standard cements with high compressive strength can’t solve these problems, so application of elastic cements with low Young’s modulus and high Poisson’s ratio becomes important. These cements sustain generated stresses during well operations and prevent creation of point loads when formation creep occurs. For this purpose, a new additive was designed in order to improve the cement elasticity and tensile strength. It is a nanoparticle and named EX-RIPI (by Research Institute of Petroleum Industry, Iran). In this work, a series of experiments was designed to investigate the effects of using this nanoparticle on elastic properties of the cement. Experimental study showed that the addition of EX-RIPI to the cement decreased the cement Young’s modulus and increased Poisson’s ratio
Keywords:
Nanoparticles ; Elastic Cement ; Youngs Modulus ; Poisson Ratio ; Cement Strength

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