QUARTZ FLOUR                  FOR   PRODUCTION    HEAT RESISTANT     TAMBO     CEMENT   Cementing is one of the most complex and most critical operations in the technological cycle of well construction.   Geological conditions and features   sections of oil and gas fields are very diverse and complex.   Groutstone, ensuring the tightness of the wells for the first time hardening, after prolonged exposure, for example   high temperatures and reservoir pressures,   may lose its insulating properties. Therefore an urgent problem   is the creation of heat-resistant cement cements,    providing preservation of physical and mechanical properties of cement   stone in difficult geological conditions, including in the presence of high temperatures. Our company produces and offers silica flour (ground quartz) with a high content of silicon oxide   for    use as an active mineral additive in the manufacture of heat-resistant grouting cements.   This flour is produced by grinding vein chemically pure quartz. The degree of grinding of our quartz flour is similar to the fineness of grinding   cement Portland cement for elevated and moderate temperatures (passage through a sieve with a mesh No. 008 - at least 90%) Adding   quartz flour    effectively slows down the time of cement setting, provides uniformity and stability (non-separability) of the mortar, increases the strength of cement stone at high temperatures.           The use of heat-resistant cements allows for grouting in deep wells.   with elevated bottomhole temperatures (from 101 C to 150 C), as well as in the range of moderate temperatures (75 C or less),   providing high-quality fastening of casing strings throughout the placement interval   solution.   Granulometric composition of quartz flour: Sieve mesh size, mm 0.1 0.08 0.06 0.04 0.02 -0.02 Sieve residue,% 1,0 2.84 3.89 8.55 24.55 59.17   The content of SiO 2 - not less than 98% Humidity - not more than 0.7% The specific surface is 300-350 m2 / kg.     Products are delivered by railway wagons, railway 3, 5, 20-ton   containers, by road, in 1-ton MKR-1 soft containers, in bags of 25-50 kg.             Also at our dry mortar factory   production of grouting compositions according to recipes is possible   the customer. At the manufacturing stage   additional reagents or special additives (expanding, reinforcing, clogging, etc.) can be added to the cement, providing a ready-made dry mixture for specific hydrogeological conditions.