Publications

Improving Injection Efficiency with a Novel Autonomous Injection Valve

Energy is critical for the global population, and natural gas is a reliable, affordable and transportable source. Water breakthroughs in gas wells can reduce productivity and recovery, leading to early well shut in. 

Abstract

Meeting the world’s growing energy demand requires improved recovery from existing oil reservoirs. Conventional injection methods often suffer from fluid loss into high-permeability zones, leading to early water breakthrough and reduced sweep efficiency. This paper introduces a novel autonomous injection valve designed to deliver a constant volumetric flow rate independent of differential pressure.The valve leverages fluid dynamic principles to autonomously regulate flow without external control. A comprehensive qualification program was conducted, including flow performance testing, mechanical integrity assessments, and evaluations in erosive and completion fluid environments. Additionally, a reservoir simulation model was developed to benchmark the valve against conventional injection technologies. Results demonstrate that the injection valve maintains a stable flow profile across a wide pressure range, with tunable flow rates derived from its mathematical definition. Simulation outcomes indicate that uniform injection enabled by this valve reduces fluid losses, enhances sweep-efficiency, and increases recovery—while also lowering injection capacity requirements and associated carbon emissions. This technology offers a step-change in injection control, enabling more efficient reservoir management and reduced environmental impact. Its predictable flow behavior and autonomous operation present a compelling alternative to conventional injection strategies.