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Yang X.,Drilling and Producing Institute of Dagang Oilfield | Guo Y.,Drilling and Producing Institute of Dagang Oilfield | Fan S.,Drilling and Producing Institute of Dagang Oilfield | Dong J.,Drilling and Producing Institute of Dagang Oilfield | You Q.,Drilling and Producing Institute of Dagang Oilfield
Drilling Fluid and Completion Fluid | Year: 2010

A high weight low corrosion and clay-free kill fluid was developed in laboratory for reservoirs protection and pipe string corrosion of HTHP wells in Dagang oilfield. The formula and the reutilization technology of the kill fluid were optimized and the highest density reaches to 1.70 g/cm 3 with two sorts of formate, which can cut the cost as low as possible. Using the optimized anti-corrosive agent, the corrosion rate is not more than 0.02 mm/a in 180°C. The application of this product in two wells was very successful.

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