第39参第4期 2017年7月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2017）04044906
DO1:10.13639/j.odpt.2017.04.010
Vol. 39 No. 4 July 2017
地下储气库并管柱沿程流体状态数值模拟
刘铭刚王建军’闫怡飞谢巍”杨秀娟闫相祯张艳茹
1.中国石油大学（华东)；2.中国石油集团石油管工程技术研完院；3.中国石油华北油田分公司
弓用格式：对铭剧，主建军，闽怡飞，谢毫，杨秀娟，闫相模，张艳茹，地下错气呼并管柱沿程流体状态数值模数「J」，石油钻工艺,2017,39(4)：449-454.
摘要：确定注采过程中天然气在油管柱内的运动状态是分析储气库并管柱受力、确定冲蚀住置的关键。根据井身结构和运行参数建立天然气流经储气库定向井油管程过程的物理模型，通过数值试验研究造斜段管柱内沿程速度、涡量和近壁压力分布；分析注采压差、井斜角及油管内径对管往近壁压力的影响规律。结累表明：油管柱内流体状态受注采压差和井身结构影响，天然气流建和近壁压力在流入流出遗斜段时发生波动；管柱沿程速度和动压随井深增大而减小，冲蚀点住置出现在造斜段流入端和流出端管柱中心线与最大狗腿角位置径向线的连线上；随着注采压差增大，流入端和流出端弯再外侧和内侧平均压程比均明显增大；随着并斜角增大，流入端亨再外侧和内侧的平均压程比增大，流出端弯曲外侧和内侧的平均压程比减小；随着油管内径增大，流入端弯由外侧和内侧的平均压程比减小，流出端弯曲外侧和内侧的平均压程比增大
关键词：地下储气库；定向井；造斜段；冲蚀；计算流体力学
中图分类号：TE38
文献标识码：A
Numerical simulation on thestateoffluids along thestring ofgas storagewell LIU Minggang,WANG Jianjun', YAN Yifei', XIE Wei, YANG Xiujuan', YAN Xiangzhen', ZHANG Yanru
1. China University of Pefroleum (Huadong/, Qingdao 266580, Shandong, Chinr;
2. CNPC Tizbarlar Goods Research Institrfe, Xi'an 710077, Shaanxi, China; 3. CNPC Huabei Oilfeld Company, Renqix 062552, Hebei, Chinc
Citation: LIU Minggang, WANG Jianjun, YAN Yifei, XIE Wei, YANG Xiujuan, YAN Xiangzhen, ZHANG Yanru. Numerical simulation on the state of fluids along the string of gas storage well [J] . Oil Drilling & Production Technology, 2017, 39(4): 449-454
Abstract: To analyze the force applied on the string of gas storage well and determine the erosion position, it is crucial to figure out the motion state of natural gas in the tubing string in the process of gas injection and production. In this paper, a physical model used to simulate the flowing process of natural gas along the tubing string of directional gas storage well was established on the basis of casing program and operation parameters. Then, the velocity and vorticity along the string and the distribution of pressure close to the wall in the deflecting section were researched by means of numerical experiment. And finally, the influential laws of injection-production pressure difference, hole deviation angle and tubing ID on the pressure close to the wall of string were analyzed. It is indicated that the state of fluids inside the tubing string is affected by injection-production pressure difference and casing program, and the flow velocity of natu-ral gas and its pressure close to the wall fluctuate the moment it flows into and out of the deflecting section. The velocity and dynamic pressure along the string decrease as the well gets deep. Erosion point is located at the connection line between the radial line at the max-imum dogleg angle and the central line of string from the inflow end to the outflow end of deflecting section. As the injection-production pressure difference increases, the average pressure range ratio between the outside and the inside of the bend at inflow and outflow ends eaeaeeaae
基金项目：国家白然科学基金资助课题“基于应变控制的热采并委管试检及安全可靠性研究"（编号：51274231)；国家白然科学基金
资助课题“基于多目标约束优化方法的页岩气储层微裂缝分析及压裂摊网扩展机理研究"（端号：51374228）
第一作者：刘铭测（1990-)，博士研究生，从事油气工程力学、机械强度及可靠性方面的研究工作。通试地延；(266580)山东省青岛市黄岛
区长江西路66号中国石油大学（华东）靖运与建筑工程学院。E-mail；liuminggang0303@126.com
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