The gas deposits of the Machukhske field are carbonate-derived and are characterised by abnormally high reservoir pressures at over 1000 atm, in addition to bottom hole temperatures of 160-170° C. By completing this feat, the company has introduced a unique technological approach, as wells as innovative solutions, to effectively develop these reserves.
Thanks to the use of advanced technologies, the drilling time was reduced to 141 days. Prior to this, the construction of such wells at the field could last longer than one year. Service-Oil LLC, the drilling contractor, undertook the project using a Drillmec-350 rig which was equipped with a Top Drive system. The drill bit service was provided by NOV. Traditionally, drilling fluids, including hydrocarbon invert emulsions, have been provided by Geosyntez-Engineering. Wellbore trajectory control, automatic verticality control, bottomhole parameters and drilling process optimisation were performed by Schlumberger using RSS, LWD and downhole process sensor systems.