engleski

Effect of Lubricant in Drill-in Fluids Composition on Friction of Tools in Horizontal Wells

The purpose of a drill-in fluid lubricant is to reduce torque and drag between the drill string and wall of a wellbore, to prevent sidewall sticking and to prolong bit bearing life. The paper describes laboratory tests and their results showing the performances of a selected lubricant for reducing torque and pipe drag when using different water based drilling fluids. Testing has been conducted under controlled laboratory conditions simulating actual drilling conditions

lubricants; torque; drag; drill-in fluids; horizontal drilling

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