Abstract
Emphasis is placed on the urgency of the problem of creating cementitious materials and solutions of high density.
The analysis of scientific sources in the field of development and research of modified cement materials with high density is carried out. The application of different types of weighting impurities to well cements is considered. The advantages and disadvantages of the weighting impurities that are used in the modification of well cements are shown. The technological schemes of the most widespread ways of creation of the weighted cement materials are resulted.
The assortment of weighted cement materials manufactured by the Ukrainian industry is analyzed.
It is noted that improving the quality of the delineation of rocks and oil and gas horizons in exploration areas and industrial fields during the cementing of high-pressure layers and zones with abnormally high reservoir pressures is possible by the development possible and application of weighted heat-resistant cements with high technological properties on the basis of ash mixtures, as well as mixtures of standard well Portland cement PTSTI-100 and acidic ash removal of thermal power plants and barite weighing agent.
Weighted and heat-resistant grouting materials with high performance properties with the use of industrial anthropogenic products have been developed and investigated.
The selection of optimal recipes of new weighted cement materials was carried out.
The results of the work have practical application in cementing oil and gas wells in complex mining and geological conditions in exploration areas and industrial hydrocarbon deposits.