Analysis of reservoir energy storage conditions

Should energy storage be used in depleted oil and gas reservoirs?

You have full access to this open access article Utilizing energy storage in depleted oil and gas reservoirs can improve productivity while reducing power costs and is one of the best ways to achieve synergistic development of "Carbon Peak–Carbon Neutral" and "Underground Resource Utilization".

What is the importance of depleted oil & gas reservoirs?

The development of depleted oil and gas type reservoirs is of great significance to the change of energy structure and the promotion of the development of energy technology, and also lays a solid foundation for the construction and development of smart grids, energy internet and smart cities (Feng 2023).

What are the advantages of using depleted reservoirs for energy storage?

The advantages of using depleted reservoirs for energy storage are the availability of detailed geological information and historical production records, lower exploration costs and shorter construction periods.

How much energy does an underground reservoir use?

The preliminary energy balance has been analyzed considering a constant reservoir capacity of 400 m 3 with operating pressures in the underground reservoir from 6 to 10 MPa. The energy consumption and production and the round-trip energy efficiency was estimated for different air mass flow rates in the compression and expansion processes.

How much thermal energy is transferred across the reservoir walls?

As indicated in Fig. 6 c, the thermal energy transferred to the surrounding media across the reservoir walls after the first cycle reaches 396 kWh for the CAES systems with an air mass flow rate of 25 kg s − 1 and 216 kWh for 100 kg s − 1.

What are the historical factors affecting a reservoir?

Historical factors include human intervention for the reservoir, such as exploration and production wells, gas production from the target reservoir and surrounding reservoirs, and well plugging and abandonment.