Techno-Economic Assessment of Clean Oil Field Energy Supply System

Abstract

In response to 2060's goal of fully achieving carbon neutrality, all walks of life are striving for low-carbon transformation. In the oilfield production and gathering system, due to the high water cut in the middle and late stages of development, the energy consumption of the oilfield will be very high, and the increase of energy consumption will lead to the increase of carbon emission at the same time. Therefore, the traditional energy model cannot meet the energy consumption demand of high water cut oil fields in the middle and later stages of development. This study investigated the current wind hydrogen coupling energy system and combined it with the traditional distributed oil field energy system to provide energy for the oil fields. To screen the scheme, this paper puts forward four different modes of the energy system, compares it with the traditional system, combined with the equilibrium energy cost and net present value, puts forward a comprehensive technical and economic evaluation method, and analyzes five scenarios. The annual energy consumption of the oil field combined station is set as 238 Gwh, the wind speed in the oilfield area has also been given. The results show that scenario 4 has the best economic and environmental benefits, in which the unit energy cost is 3.62 $/ Kwh and the net present value is 2.95×107 $, compared with the traditional energy model, the carbon emission is reduced by 44096080kg, the local consumption of renewable energy is realized, and the pressure on the power grid system caused by the grid connection of wind power generation is reduced. Finally, through sensitivity analysis, the effects of wind speed, power price, and oil field associated gas production on the economic performance of the system are analyzed.