Development, application and reuse prospects of invert emulsion drilling fluids
Authors: O.V. Garshina, P.A. Khvoshchin, O.G. Kuznetsova, I.A. Kudimov, G.V. Okromelidze (PermNIPIneft, Branch of LUKOIL-Engineering LLC in Perm)
Invert emulsion drilling fluids are quite successfully used in horizontal drilling in the Perm region. The composition of these drilling fluids upgraded to produce low-viscosity invert emulsions having optimal structural and rheological properties, with high content of barite and stability of parameters depending on temperature. The above-mentioned advantages of the new drilling fluid can extend the application of this system in other climatic regions and thermobaric conditions. A technology for preparation of the borehole before cementing wells drilled in the invert emulsion drilling mud is developed. Several methods of waste recycling of oil-based drilling mud is developed and applied.
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