REVERSE EMULSION DRILLING SOLUTIONS AND DRILLING METHODS OF WELLS

摘要

Reverse emulsion drilling fluid and method of its use in well drilling, with good rheological properties at high temperatures and pressures. In one embodiment, drilling fluids do not contain organophilic clays and lignites; do not contain calcium chloride and contain alcohol in the dispersed phase, Quaternary ammonium emulsifier and clay solids. In one embodiment, the alcohol is glycerol, polyglycerol, or a mixture thereof. In one embodiment, the base oil for the emulsion is paraffin and / or mineral oil. Drilling fluids provide good lubricating action and high penetration rates.