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METHOD OF REDUCING TORQUE AND DRAG IN A WELLBORE
METHOD OF REDUCING TORQUE AND DRAG IN A WELLBORE
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机译:减少井眼扭矩和阻力的方法
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1532922 Drilling fluids A A DODD 19 May 1977 [29 April 1977] 21099/77 Heading E1F In a method of drilling a wellbore, torque and drag is reduced by adding to the drilling fluid substantially solid, spherical glass beads having a particle size of 44-88 microns and a hardness of 5.5 on the Moh's scale.
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