铁大原油管道石蜡沉积物的分布规律  

Paraffin sediment distribution pattern of Tieling-Dalian Crude Oil Pipeline

作　　者：王巨洪 冯庆善[2] 兰浩[3] 范立志 刘罡[2] 

机构地区：[1]中国石油管道公司大连输油气分公司,辽宁瓦房店116300 [2]中国石油管道公司,河北廊坊065000 [3]中国石油管道科技研究中心,河北廊坊065000

出　　处：《油气储运》2012年第10期785-789,812,共5页Oil & Gas Storage and Transportation

摘　　要：以铁大原油管道为研究对象,通过对动火改造现场管道的实际结蜡情况进行统计和分析,结合10年来输送工艺和输送介质的变化,初步确定了管内石蜡沉积物的分布规律。管内原油与周围环境间的热量交换是决定管道结蜡厚度、分布和强度的重要因素。管道沿线油温、环境、保温效果等差异是造成管内结蜡分布不均匀的重要原因,脱落蜡块的随机漂移与堆积增强了管内石蜡沉积物分布规律的不规则性。局部管段严重蜡堵导致管道平均蜡厚显著增加,对于局部结蜡严重的管段,仍需借助割管观测、加密开孔测压等传统手段确定管道的实际结蜡情况。此外,大致推算出目前管道内的存蜡量。Take Tieling-Dalian Crude Oil Pipeline as a research object, through statistics and analysis of actual paraffin precipitation conditions of field pipeline transformed by fire work and based on changes of transportation process and medium in recent 10 years, the distribution law of paraffin sediments in the pipeline is determined preliminarily. Heat exchange between the crude oil in the pipeline and ambient environment is an important factor to decide thickness, distribution and intensity of pipeline paraffin precipitation. Differences in oil temperature, environment, insulation effect, etc. of the pipeline are an important reason for uneven paraffin precipitation distribution in the pipeline. Random drift and accumulation of shedding paraffin blocks enhance irregularity of pipeline paraffin sediment distribution pattern. Serious paraffin blocking in local pipe sections causes a significant increase of average paraffin thickness. For the pipe section subject to serious paraffin precipitation, pipe cutting observations, dense opening for pressure measurement and other traditional means are still needed to determine actual paraffin precipitation conditions of the pipeline, and roughly, current paraffin sediment amount within the pipeline can be calculated.

关 键 词：原油管道 石蜡沉积物 局部蜡厚 平均蜡厚 大庆原油 俄罗斯原油 

分 类 号：TE832[石油与天然气工程—油气储运工程]