稠油掺稀井系统效率评价方法研究及应用

System efficiency evaluation for heavy oil wells producing by mixing light oil

夏新跃 姜建华 赵元 蒋磊 黄静珠

Xia Xinyue Jiang Jianhua Zhao Yuan Jiang Lei Huang Jingzhu

中国石化 西北油田分公司 采油二厂, 新疆 轮台 841604

No.2 Oil Production Plant, SINOPEC Northwest Company, Luntai, Xinjiang 841604, China

针对稠油掺稀井系统效率低问题，通过分析2012年石油行业标准《SY/T5264-2012油田生产系统能耗测试和计算方法》，发现不适应稠油掺稀井系统效率评价因素主要有两方面，一是没有考虑油套环空与油管内流体密度差，二是没有考虑流体黏度摩阻损失，低估了有效举升扬程，造成稠油掺稀井系统效率评价偏低。在原有计算方法基础上引入密度差及黏度摩阻2个参数，制订了适合稠油掺稀井系统效率评价方法。通过将6口稠油掺稀井分别采用《SY/T5264-2012油田生产系统能耗测试和计算方法》和稠油掺稀井系统效率评价方法进行分析，发现后者较前者系统效率平均提升10.7%，提高了稠油掺稀井系统效率，指导油田节能降耗。

The system efficiency of heavy oil wells producing by mixing light oil is still low at present. The petroleum industry standard SY/T5264-2012 "Energy consumption test and calculation of oilfield production system" was studied, indicating that there were two factors which did not adapt to the evaluation of system efficiency:a) Tubing-casing annulus and fluid density difference were ignored. b) Fluid viscosity friction loss was not taken into consideration, leading to underestimated effective head lift. Two parameters, density difference and viscosity friction, were introduced to the original calculation method. The petroleum industry standard SY/T5264-2012 and the improved system efficiency evaluation method were applied in six heavy oil wells producing by mixing light oil, successfully improving system efficiency by 10.7% in average, which saved energy and reduced consumption in oil fields.

https://doi.org/10.11781/sysydz2017S1106