摘要
气液两相携砂能力是气液固三相流动过程中最为重要的因素之一,直接影响油井的石油开采量。研究了含气率对气液固三相流动特征的影响、砂粒粒径对沉降末速的影响以及含气率和砂粒粒径对气液两相携砂能力的影响,首先利用模拟软件模拟不同含气率下气液固三相流动,发现含气率对流体流速影响不大,但对井筒内压力影响明显。随着含气率增加,井筒内压力随之降低。接着设计并进行砂粒沉降实验,发现随着目数增加(粒径减小),砂砾的沉降末速随之减小。最后利用模拟软件模拟气液两相的携砂过程,发现随着含气率增加,气液两相的携砂能力随之减小,举升砂粒也变得更为困难。
The gas-liquid two-phase sand-carrying capacity is one of the most important factors in the gas-liquid-solid three-phase flow process,which directly affects the oil production of oil wells.The influence of gas content on the characteristics of gas-liquid-solid three-phase flow,the influence of sand particle size on the end settling velocity,and the influence of gas content and sand particle size on the gas-liquid two-phase sand carrying capacity were studied.First,the simulation software was used to simulate different gas-liquid-solid three-phase flow under the gas content rate,it was found that the gas content rate had little effect on the fluid flow rate,but had significant effect on the pressure in the wellbore.As the gas content increased,the pressure in the wellbore decreased.Then sand sedimentation experiments were designed and conducted,and it was found that as the mesh number increased(the particle size decreased),the sedimentation speed of the gravel decreased.Finally,a simulation software was used to simulate the sand-carrying process of the gas-liquid two-phase,and it was found that as the gas content increased,the sand-carrying capacity of the gas-liquid two-phase decreased,and it became more difficult to lift the sand particles.
作者
曹广胜
翟胜博
王鑫
吴佳骏
邢沛东
CAO Guang-sheng;ZHAI Sheng-bo;WANG Xin;WU Jia-jun;XING Pei-dong(Key Laboratory of Improving Oil and Gas Recovery of Ministry of Education,Northeast Petroleum University,Daqing Heilongjiang 163318,China)
出处
《当代化工》
CAS
2023年第1期23-27,共5页
Contemporary Chemical Industry
基金
国家自然科学基金,活性原油在非均质储层中的自适应控水增油机理(项目编号:51574089)。
关键词
气液固三相流
携砂
沉降实验
Gas-liquid-solid three-phase flow
Carrying sand
Sedimentation experiment
