RETURN OF ELECTRIC DRILLING — PROSPECTS FOR DOMESTIC TECHNOLOGY FOR HIGH-TECH WELL DRILLING

Abstract

The article gives a comparative analysis of the results of electric drilling in the USSR and the advantages of the new electric drilling complex (EBK). Since 1948, over the next 15 years, the use of the first generation of EBK was organized in the fields of Azerbaijan, Turkmenistan, Bashkiria and Ukraine. The efficiency of mechanical drilling was higher than that of the turbine, but the overall performance was unstable due to a number of organizational and technical problems. The improvement of the ECB continued from 1963 to 1970: a series of geared electric boilers, equipment for directional drilling, a ground control and control station, and a data transmission system for a power electric cable were developed. The telemetry system provided the ability to control bottomhole equipment and monitor the drilling process. Bashkiria fields were the main "test site" for the development of the ECB, and this drilling method was used until 2013. Drilling performance in the complex geological and technical conditions of directional drilling was higher than the GZD drilling used everywhere in the USSR. In 2017, work began on the return of a new generation ECB to the well construction market in Russia. The new ECB meets modern requirements for the construction of high-tech wells through the use of a piercing valve motor (CVED) and a high-speed data transmission channel. The ECB provides optimal parameters of rock destruction regardless of the well profile and type of drilling agent, as well as increases the efficiency of prevention and elimination of complications and creates conditions for automation of the drilling process. In parallel with the development of ECBs on drill pipes with cable sections, electric drilling is being developed on a tubing — a promising method for drilling sidetracks and branches from horizontal boreholes. The level of readiness of the PU technology for the current day corresponds to SCT 3 according to State Standart R 58048-2017.