The well completion configuration combined 6-5/8- and 4-1/2-in. The project is one of the first gas fracturing campaigns in Eastern Siberia. Coiled tubing was involved in operating controllable frac ports, well kick-off and inflow profile recording using proprietary technologies. A multistage stimulation campaign was executed to test the efficiency of hydraulic fracturing in subhorizontal multilayer well. One of the prospective options is to implement hydraulic fracturing in low-permeability areas of the Chayandinskoye. Geological properties of the formations vary significantly, and it is necessary to define appropriate methods of well construction and completion prior to switching to a field. The field is currently in the exploration stage. In particular, producing formations of the Chayandinskoye field have extremely low temperatures 46 -55° F (8 to 13☌). The geology of Eastern Siberia formations is unique.
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