drilling with aerated drilling fluids
1Underbalanced drilling — Underbalanced drilling, or UBD, is a procedure used to drill oil and gas wells where the pressure in the wellbore is kept lower than the fluid pressure in the formation being drilled. As the well is being drilled, formation fluid flows into the… …
2Xanthan gum — is a polysaccharide used as a food additive and rheology modifier Harv|Davidson ch. 24. It is produced by a process involving fermentation of glucose or sucrose by the Xanthomonas campestris bacterium. Chemical structureThe backbone of the… …
