Flow field simulation of supercritical carbon dioxide jet： Comparison and sensitivity analysis

• Published in: Journal of hydrodynamics. Series B Vol. 27; no. 2; pp. 210 - 215
• Main Author: 王海柱 李根生 田守嶒 程宇雄 贺振国 于水杰
• Format: Journal Article
• Language: English
• Published: Singapore Elsevier Ltd 01.04.2015; Springer Singapore; State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing),Beijing 102200, China%Sinopec International Petroleum Exploration and Production Corporation, Beijing 100029, China
• Subjects: confining pressure; drilling; Engineering; Engineering Fluid Dynamics; flow field; Hydrology/Water Resources; Numerical and Computational Physics; SC-CO2; Simulation; supercritical carbon dioxide; water jet; 冲击压力; 喷射参数; 天然气勘探; 射流技术; 敏感性分析; 流场模拟; 超临界二氧化碳; supercritical carbon dioxide; drilling; flow field; water jet; confining pressure
• ISSN: 1001-6058; 1878-0342
• DOI: 10.1016/S1001-6058(15)60474-7

As a new jet technology developed in recent years, the supercritical carbon dioxide（SC-CO2） jet technology enjoys many advantages when applied in oil and gas explorations. In order to study the properties and parametric influences of the SC-CO2 jet, the flow fields of the SC-CO2 jet are simulated using the computational fluid dynamics method. The flow field of the SC-CO2 is compared with that of the water jet. The influences of several parameters on the flow field of the SC-CO2 jet are studied. It is indicated that like the water jet, the velocity and the pressure of the SC-CO2 jet could be converted to each other, and the SC-CO2 jet can generate a significant impact pressure on the wall, the SC-CO2 jet has a stronger impact pressure and a higher velocity than those of the water jet under the same conditions, the maximum velocity and the impact pressure of the SC-CO2 jet increase with the increase of the nozzle pressure drop, under the stimulation condition of this study, the influence of the SC-CO2 temperature on the impact pressure can be neglected in engineering applications, while the maximum velocity of the SC-CO2 jet increases with the increase of the fluid temperature. This paper theoretically explores the properties of the SC-CO2 jet flow field, and the results might provide a theoretical basis for the application of the SC-CO2 jet in oil and gas well drillings and fracturing stimulations.