摘要
建立输油管道蜡沉积预测模型,掌握蜡沉积主控因素,对制定蜡沉积抑制措施至关重要。通过环道实验,分析了SK管道内油温、油壁温差和流速对蜡沉积速率的影响,采用灰色关联分析法分析了上述三种影响因素的敏感性;基于黄启玉模型,利用环道实验数据拟合得到含蜡原油蜡沉积预测模型;提出了抑制结蜡措施。结果表明:对含蜡原油沉积影响速率油壁温差>油温>流速;三种因素对管道原油蜡沉积速度都有影响,只有流速调整具有现场可操作性,可采用提高流速方式抑制结蜡量;模型计算表明出站温度相同条件下间歇输送清蜡量较连续输送减少24.9%,说明间歇输送具有可行性。两种工况下预测结蜡量约为实际收蜡量的2倍(部分蜡被油流冲刷进罐),说明建立的计算模型具有较高的实用价值。研究成果为含蜡原油管道结蜡特性分析及结蜡措施的制定提供了参考。
Establishing a prediction model for wax deposition in oil pipelines and mastering the main controlling factors of wax deposition are crucial for developing measures to suppress wax deposition.Through loop experiments,the effects of oil temperature,oil wall temperature difference,and flow velocity on wax deposition rate in SK pipelines were analyzed.The sensitivity of the above three influencing factors was analyzed using grey correlation analysis method;Based on the Huang Qiyu model,a prediction model for wax deposition in waxy crude oil was fitted using loop experimental data;Measures have been proposed to suppress wax deposition.The results show that the deposition rate of waxy crude oil is influenced by the temperature difference between oil walls,oil temperature,and flow rate;Three factors have an impact on the deposition rate of crude oil wax in pipelines.Only the flow rate adjustment has on-site operability,and increasing the flow rate can be used to suppress wax deposition;The model calculation shows that under the same conditions of exit temperature,the amount of wax removal during intermittent transportation decreases by 24.9%compared to continuous transportation,indicating the feasibility of intermittent transportation.The predicted wax deposition amount under two working conditions is about twice the actual wax collection amount(some wax is washed into the tank by oil flow),indicating that the established calculation model has high practical value.The research results provide a reference for the analysis of wax deposition characteristics in waxy crude oil pipelines and the formulation of wax deposition measures.
作者
李洪福
李梦瑶
李媛媛
熊小琴
薛润斌
刘畑
刘霞
Li Hongfu;Li Mengyao;Li Yuanyuan;Xiong Xiaoqin;Xue Runbin;Liu Tian;Liu Xia(Oil and gas storage and transportation company research institute,PetroChina Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China;Xinjiang Oilfield Oil Production Technology Research Institute(Supervision Company),Karamay,Xinjiang 834000,China;College of Engineering,Karamay Campus,China University of Petroleum(Beijing),Karamay,Xinjiang 834000,China)
出处
《化工设备与管道》
CAS
2024年第6期87-94,共8页
Process Equipment & Piping
基金
新疆维吾尔自治区自然科学基金资助项目(2023D01A19)
新疆天山创新团队“油气高效管输技术研究与应用创新团队”(编号2022TSYCTD0002)。
关键词
含蜡原油
环道实验
蜡沉积
敏感性分析
预测模型
waxy crude oil
loop experiment
wax deposition
sensitivity analysis
prediction model
