Energy storage oil pressure adjustment

Can CO2 injection improve oil recovery and oil storage in tight-oil reservoirs?

CO 2 injection development represents a significant method of reservoir production, potentially facilitating enhanced oil recovery (EOR) alongside CO 2 storage. Currently, limited research exists on advanced CO 2 injection and well pattern adjustment aimed at improving the oil recovery and CO 2 storage within tight-oil reservoirs.

Does well pattern adjustment improve oil production efficiency in tight-oil reservoirs?

Well pattern adjustment effectively supplements the formation energy, extends the stable production lives of production wells, and increases both the sweep efficiency and oil recovery. This study provides theoretical support and serves as a reference for CO 2 injection development in tight-oil reservoirs. 1. Introduction

Does injection pressure affect Oil Displacement efficiency?

An analysis suggests that with increasing injection pressure, the oil displacement efficiency shows a linear increase. During this stage, the oil displacement primarily relies on the displacement action of CO 2, and this pressure range is categorized as non-miscible flooding.

Does pressure adjustment increase CO2 storage volume?

The quantity of free-state CO 2 remains relatively constant. The discrepancy in total CO 2 storage volume arises from the solid phase of the hydrate. Compared with the base data, all pressure adjustment scheme significantly increases the CO 2 storage volume up to 56.1 % (case 1), 83.4 % (case 2), and 74.6 % (case 3).

How to optimize energy consumption of the oilfield?

The integrated energy-consumption calculation model of the injection–reservoir–production (I–R–P) coupling system is established. Finally, in order to optimize the energy consumption of the oilfield, the production scheme is optimized by combining Particle Swarm Optimization algorithm, I–R–P integration system, and reservoir numerical simulation.

How can pressure control improve secondary CO2 trapping performance?

Pressure control utilizing the “memory effect” of CO 2 hydrate phase transition can significantly enhance the performance of secondary CO 2 trapping. Without pressure adjustment, the mass transfer coefficient at the gas-hydrate crystallization interface remains in the order of 10 -7 m/s .