Development of cements with high thermal insulation properties for oil/natural gas and geothermal wells

Millions of cubic meters of energy resources are obtained by drilling oil-natural gas and geothermal drillings in the world every year. These extracted resources are processed through a series of processes and converted into different forms of energy. Since the drilling, production and processing of oil-natural gas and geothermal resources are economically high, the goal of reducing costs is extremely important for companies operating in the sector as well as for every sector that consumes energy. Oil deposits are called Newtons and nano-Newtons according to their fluidity. Their production and the costs they cause are different from each other. Particularly, nano-Newtonian (heavy) oils contain "paraffin, asphalt and tar" in different proportions depending on the chemical properties of the oil reserve, and physical changes occur due to heat losses during their movement towards the surface and clogging occurs when solidified. As a precaution, it is aimed to prevent these problems by increasing the thermal insulation properties of cements used in well cementing. Within the scope of this thesis, cements with sufficient strength and high thermal insulation properties are obtained by adding materials such as perlite, which is the most widely used in the existing petroleum-natural gas and geothermal fields, at rates ranging from 5% to 30% by volume, for which our country has large reserves in terms of resources. intended to be produced. The mechanical and thermal properties of the obtained products were compared with the existing G type cement. Additives were added in different proportions in order to ensure that the properties of the new type of cement produced comply with API standards and that they can be applied to well formations. In addition, the relations between the content, ratio, thermophysical and mechanical properties of the produced samples were examined and the relations were given with equations and graphs. As a result of the experimental studies, it has been determined that the thermal conductivity coefficient of the % 30 perlite added cement by volume is % 62.37 less than the existing G type cement. By using the new cement types produced in the wells in the production phase, it is aimed to reduce the time spent with additional equipment-operation expenses used for support purposes as much as possible, to prevent job losses and to reduce costs by preventing production disruption.