Cluster Pumping Station with Autonomous Power Supply and a System of Thermal Water and Gas Reservoir Treatment as Energy-Saving Means

Abstract

The article deals with the problem of associated gas utilization in the development of fields containing hydrogen sulfide, a fundamentally new method of oil production by influencing the oil reservoir is proposed. A scheme for using this gas in the process of the working agent pumping to maintain reservoir pressure is proposed. A method of oil production by treating the formation is considered, including oil withdrawal from the producing well, separation of water and associated gas from it in the separator, gas combustion in the heat engine, the use of the energy obtained in the engine to drive pumps and an electric generator, heating water and pumping it into the formation, pumping combustion products into the formation, characterized in that the gas supplied to the heat engine is taken from the producing well annulus and due to this, the pressure in the annulus is regulated, regardless of the pressure in the linear oil pipeline, ensuring maximum gas withdrawal while maintaining the optimal dynamic level in the well for a given operation mode, the gas from the separator is pumped into the reservoir, and the water is heated to a temperature higher than the melting point of paraffin for this field. The article offers a solution to this problem by generating electricity directly in the oil field using a heat engine. At the same time, hot water is pumped into the reservoir. The water is heated by the combustion products of the heat engine, which employs annular gas as fuel. The proposed method allows water to be heated to a temperature exceeding the melting point of paraffin and characterized in that the water is heated in a mixing heat exchanger. The proposed solution is characterized in that the combustion products together with the gas coming from the separator are pumped into the reservoir using water-gas technologies. It is important that nitrogen is separated from the combustion products, and the remaining gases are pumped into the formation, and gas is additionally supplied to the input of the heat engine from an external source.