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.
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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