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The increasing demand on the hardly accessible petroleum resources drives the E&P sector to find better solutions for the drilling and production systems. The drilling operation?s environmental impact is being more and more important where the role of drilling fluids is the key factor. The use of the nanotechnology promises new opportunities in both efficiency and environmental protection. Nano-additives can meaningfully affect the drilling fluid properties in small concentration help to their small particle sizes...

Formation invasion plays an important role in the modern drilling practices. The well completion and production cost play more and more important role as the petroleum industry meets new challenges. The well completion and stimulation cost can be reduced if the mud?s effect on the hydrocarbon-bearing formation is clearly known and can be modeled at the well design phase. Better mud selection leads to lower cost in the completion phase. Proper mud selection can be supported by early reservoir analysis based on prev...