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  • Which lubricant reduces friction in PHPA polymer mud?
  • The effect of lubricant was more pronounced when the load was increased from 30 lbf to 60 lbf. Lubricant C reduced the friction in the PHPA polymer mud the most when fluid lubricity was measured with a load of 60 lbf, bringing the measured torque down by almost 40%.
  • Can lubricants reduce drag force in drilling fluid system?
  • Using different types of lubricant in drilling fluid system is the most practical methods to reduce the drag force (sliding friction) caused by the contact between drillstring and well casing or borehole. This paper investigates the effect of solid and liquid lubricants on the CoF in laboratory and field applications.
  • Can solid lubricants reduce drilling fluid costs?
  • Cost estimation indicates that compared to the liquid lubricants, solid lubricants can reduce drilling fluid costs significantly. Moreover, based on Experimental results, no more than 5–6 percent of liquid lubricants can be used to reduce friction coefficient.
  • Which lubricant reduces friction?
  • On the other hand, based on the results from the LEM measurements, Lubricant E provided the most friction reduction at a load of 60 lbf when added to the saturated salt mud and the generic bentonite mud. In comparison, at a load of 30 lbf, no significant friction reduction was achieved with the use of the lubricants in the two WBMs.