... soluble salt that may be present in the mud. This could alter the balance between the interparticle attractive and repulsive forces and so the degree of dispersion and flocculation of the mud systems. Sometimes, this can also deeply affect the emulsion stability of oil based muds. All these phenomena have...

... available rheological properties of oil muds at high temperatures and pressures. Thermal stability of various oil muds are discussed on the basis of theoretical physiochemical behavior of the constituents as well as on the basis of laboratory aging and rheology data. In addition, data on oil base mud...

... equipment, the dispersing type drilling fluid used which makes the solid separation more difficult, and the facts that the lower 5,000 feet of formation is overpressured, behaves plastically, and has a high montmorillonite content. A salt solution base mud is discussed as an alternative to the commonly...