12.03.2020
Inverted oil-emulsion cement slurry for cementing intervals, exposed by oil-based drilling muds, is inverted emulsion whose dispersion medium is hydrocarbon fluid. Cement stone is formed without phase inversion, emulsion type change or water separation.
It was implemented at Well 55, Machukhy gas-condensate field, whose drilling was performed using inverted oil-emulsion drilling mud Witer II. Cement plug for water-saturated bed was successfully installed in the interval of 5238 – 5472 m, at the temperature of 147 °С.
In the picture (from left to right): Sergiy Lyashenko, Nazar Zholob
