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It is analogue of systems Baradril-N and Flo-Pro with optimal technical properties. It is developed on the basis of practical experience. It is designed for drilling of horizontal and curved wells in reservoir horizons , section of unstable clays and also drilling of super-deep wells. It is practically used at fields of DDC and shelf of Azov and Back Sea. Formulation of "DF-ECOGOR-GIP" system - Mineral inhibitor, 60-100 kg/m³;
- Secondary inhibitor, 0-350 kg/m³;
- Starch stabilizer, 20 – 30 kg/m³;
- Bio-polymer gelling additive, 2 - 3 kg/m³;
- Calcium carbonate, 80 - 300 kg/m³;
- Special filler , 3-10 kg/m3;
- Bituminized stabilizer , 10-20 kg/m3;
- Ecologically safe grease, 30-50 kg/m3;
- Alkalinity correction agent, 2 - 5 kg/m³
- Defoamer, 1- 2 kg/m³;
- Bactericides, 1 kg/m3.
Parameters of the systems in accordance with API methods - Density, 1050 - 1450 kg/m³;
- Funnel viscosity (FV), 30 – 55 sec.;
- Plastic viscosity (PV), 15 - 30 cP;
- Yield point (YP), 15 – 40 lbs/100 ft2;
- Gel static shear stress (Gels) 10 sec/10 min, 10–20 / 25-50 lbs/100 ft³;
- Fluid loss FL, 3-4 cm³/30 min;
- Clay phase MBT, ≤ 10 kg/m³;
- pH, 10 – 11;
- Grease content, 1-3%;
- Content К+ , 3 % – 5 %.
Benefits of "DF-ECOGOR-GIP" system - Stable quality management;
- Optimal conditions for flushing of horizontal wells;
- Optimal conditions for flushing of very deep wells;
- Maximum resistance of plastic clays;
- High quality primary drilling-in;
- Indexes of return permeability is up to 92 %;
- Ecological safety.
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