Energy storage systems for drilling rigs

Abstract

Energy storage systems are an important component of the energy transition, which is currently planned and launched in most of the developed and developing countries. The article outlines development of an electric energy storage system for drilling based on electric-chemical generators. Description and generalization are given for the main objectives for this system when used on drilling rigs isolated within a single pad, whether these are fed from diesel gensets, gas piston power plants, or 6–10 kV HV lines. The article studies power operating modes of drilling rigs, provides general conclusions and detailed results for one of more than fifty pads. Based on the research, a generic architecture of the energy storage module is developed, and an engineering prototype is built. The efficiency of using a hybrid energy accumulation design is proven; the design calls for joint use of Li-ion cells and supercapacitors, as well as three-level inverters, to control the storage system. The article reviews all possible options for connecting the system into a unified rig power circuit, and the optimum solution is substantiated. The research into the rig operating modes and engineering tests yielded a simplified mathematical model of an energy storage unit integrated into the power circuit of a drilling rig. The model is used to forecast the payoff period of the system for various utilization options and rig operating modes. The findings of this study can help to better understand which type of storage system is the most efficient for energy systems with temporary high load peaks, like drilling rigs.

Design of a Hybrid Electric Power-Split Transmission for Braking Energy Recovery in a Drilling Rig

“…Soil drilling is a very energy-consuming process [29], where the energy efficiency can be enhanced in several ways, including the improvement of the drill bit material [30], the implementation of a proper control strategy to increase the engine efficiency [31], and the embedding of an energy storage system to modulate the peak power requested to the engine [32][33][34]. In addition, the release of gravitational energy during the lowering phases of drilling, tripping in, and casing can be exploited by avoiding a completely dissipative braking but recovering the braking power hydraulically [35], mechanically [36], or electrically [37,38].…”

Technological sovereignty of the Russian Federation fuel and energy complex

“…Fundamentally new technical and engineering challenges are facing the fuel and energy complex of the Russian Federation as part of the global energy transition [11] in the following areas: ubiquitous introduction of industrial energy storage systems at generating facilities [12], production and use of hydrogen, development of the domestic market for gas motor fuel, capture and use of greenhouse gases, creation of fundamentally new types of drives for a qualitative and quantitative increase in the energy efficiency of industrial systems, petrothermal energy, monitoring and stabilization of "permafrost", which occupies more than 65 % of Russia [13].…”

“…• One of the directions of the world economy decarbonization is hydrogen energy technologies, which received an additional impetus for development in connection with the climate agenda and the desire of the countries of the world to move to a low-carbon economy [39,40] 11 . By 2050, according to various estimates, the share of hydrogen in the global energy balance can increase many times and reach from 4 to 24 % of final energy consumption 12 . For Russia, in addition to hydrogen energy technologies within the framework of decarbonization, it is worth separately highlighting the prospects for petroenergy, primarily due to high competencies in the field of well construction [41].…”

“…Decree of the Government of the Russian Federation of 12 October 2020 N 2634-r on the approval of the Action Plan "Development of hydrogen energy in the Russian Federation until 2024" 12. Hydrogen Economy Outlook, Key Messages, March 30, 2020.…”