CAJ | 학술논문

为了促进涡流排水采气工艺在我国的推广应用，开展了涡流工具特性的模拟研究。建立了涡流工具排液过程的数理模型，对涡流工具引发的旋流场进行了模拟研究，获得了不同雷诺数及持液率下的气液螺旋涡流的流场结构及特点，气速对液膜螺旋流的影响规律，螺旋流动强度的变化规律。研究结果表明，涡流工具使气液两相流体调整为类环状流动，井筒中心以连续气柱的形式向上运动，壁面附近的液膜螺旋上升运动，这种流动结构降低了管柱摩阻，提高了气体携液能力。
위료촉진와류배수채기공예재아국적추엄응용，개전료와류공구특성적모의연구。건립료와류공구배액과정적수리모형，대와류공구인발적선류장진행료모의연구，획득료불동뢰낙수급지액솔하적기액라선와류적류장결구급특점，기속대액막라선류적영향규률，라선류동강도적변화규률。연구결과표명，와류공구사기액량상류체조정위류배상류동，정통중심이련속기주적형식향상운동，벽면부근적액막라선상승운동，저충류동결구강저료관주마조，제고료기체휴액능력。
In order to facilitate the eddy current drainage gas recovery technology being widely used in China, simulation research on eddy current instrument characteristics was carried out. The mathematical model of eddy current tools draining process was estab-lished to study the eddy ifeld triggered by the cyclone of the tools. The simulation ifgured out the lfow ifeld structure and characteristics of gas-liquid spiral vortex lfow under different Reynolds numbers and liquid holdup conditions; besides, the inlfuence of gas velocity on liquid membrane spiral lfow and variation of spiral lfow intensity also obtained from the simulation results. The study had revealed that the gas-liquid two-phase lfuid was transformed into kind of annular lfow by vortex tools, and the center of the wellbore moved up in a continuous form of gas column accompanied liquid membrane near the wall spiral upward movement. These lfow structures reduce string friction and improve gas liquid carrying capacity.