井口到计量间集油管道热洗清淤研究
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摘要
随着三次采油技术的实施,聚合物驱油技术在提高采收率的同时也给地面原油处理、加工及集输带来了新的挑战。针对聚合物驱管道结蜡淤积导致集油管线高回压问题,停输后对井口到计量间的聚合物驱集油管道进行热洗清淤研究。探究在不同集油半径条件下,热洗水量、热洗水温及不同含聚质量浓度的淤积物对清淤时间的影响。通过理论公式计算清淤时间及实验结果发现,热洗水温在65~70℃增加热洗清淤效率最明显。对于不同含聚质量浓度的淤积管线进行清洗时,在低热洗水量的条件下,高含聚采出液的淤积物清洗时间相对更长。随着热洗水量的增加,不同含聚质量浓度淤积物的清洗时间几乎相等,没有明显变化。
With the implementation of the three oil recovery technology,although polymer flooding technology improves the oil recovery,it also brings new challenges to crude oil processing and gathering.High return pressure of oil gathering pipeline was caused by wax deposition of polymer flooding pipeline.Study was carried out on the heat cleaning of the polymer flooding gathering pipeline between the wellhead and the metering room after shutdown the well.The effects of heat washing water quantity,hot wash water temperature and different concentration of polymer on the dredging time were studied under different oil gathering radius.It was found that the hot wash water temperature was more obvious in the range of 65~70℃,which was calculated by the theoretical formula.When cleaning different polymer concentration pipelines,in the low water conditions,cleaning time of produced liquid with high concentration polymer was relatively longer.With the increase of heat washing water,there was no obvious change in the cleaning time of the sediment with different concentration.
With the implementation of the three oil recovery technology,although polymer flooding technology improves the oil recovery,it also brings new challenges to crude oil processing and gathering.High return pressure of oil gathering pipeline was caused by wax deposition of polymer flooding pipeline.Study was carried out on the heat cleaning of the polymer flooding gathering pipeline between the wellhead and the metering room after shutdown the well.The effects of heat washing water quantity,hot wash water temperature and different concentration of polymer on the dredging time were studied under different oil gathering radius.It was found that the hot wash water temperature was more obvious in the range of 65~70℃,which was calculated by the theoretical formula.When cleaning different polymer concentration pipelines,in the low water conditions,cleaning time of produced liquid with high concentration polymer was relatively longer.With the increase of heat washing water,there was no obvious change in the cleaning time of the sediment with different concentration.
引文
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[2]魏立新,庞仁山,诸葛祥龙,等.三元复合驱集油管道淤积规律试验研究[J].新疆石油地质,2012,33(6):741-743.Wei Lixin,Pang Renshan,Zhuge Xianglong,et al.Experimental study on composite round three component compound flooding pipeline sedimentation[J].Xinjiang Petroleum Geology,2012,33(6):741-743.
[3]王志华.高凝原油管道输送蜡沉积规律实验研究[J].特种油气藏,2006,13(5):91-93.Wang Zhihua.Experimental study on wax deposition in pipeline transportation of highly viscous crude oi1[J].Special Oil and Gas Reservoir,2006,13(5):91-93.
[4]刘刚,陈雷,张国忠,等.管道清管器技术发展现状[J].油气储运,2011,30(9):646-653.Liu Gang,Chen Lei,Zhang Guozhong,et al.Development status of pipeline pigging technology[J].Oil&Gas Storage and Transportation,2011,30(9):646-653.
[5]罗一菁,张忠智,赵树英,等.聚合物驱采油污水处理研究进展[J].石油化工高等学校学报,2003,16(1):9-13.Luo Yijing,Zhang Zhongzhi,Zhao Shuying,et al.Progressive research of treatment for sewage produce from polymer flooding displacement[J].Journal of Petrochemical Universities,2003,16(1):9-13.
[6]陈海波.原油集输管道结蜡规律及PIG清管技术研究[D].大庆:东北石油大学,2012.
[7]高宏亮.综合清防蜡技术在吐哈油田应用效果分析[J].中国科技博览,2010(34):317-318.Gao Hongliang.Analysis on the application effect of comprehensive paraffin removal technology in Tuha oilfield[J].China Science and Technology Expo,2010(34):317-318.
[8]赵福麟.防蜡剂与清蜡剂[J].石油钻采工艺,1988,10(1):81-86.Zhao Fulin.Paraffin inhibitor and paraffin remover[J].Oil Drilling&Production Technology,1988,10(1):81-86.
[9]郑延成,李克华.防蜡剂与清蜡剂的研究概况[J].石油与天然气化工,1992,21(3):175-177.Zheng Yancheng,Li Kehua.Study on paraffin inhibitor and wax removal agent[J].Chemical Engineering of Oil and Gas,1992,21(3):175-177.
[10]陈玉英,刘子聪.化学清防蜡剂在百色油田的应用[J].化学清洗,1996,12(4):15-18.Chen Yuying,Liu Zicong.Application of chemical paraffin inhibitor in Baise oilfield[J].Chemical Cleaning,1996,12(4):15-18.
[11]张厚顺.北三台油田微生物清防蜡技术研究[J].辽宁化工,2011,40(7):769-770.Zhang Houshun.Study on the technology of paraffin removal and control of microorganisms in the North Third oil field[J].Liaoning Chemical Industry,2011,40(7):769-770.
[12]曹怀山,谭云贤,王磊,等.大芦湖油田微生物防蜡技术[J].油田化学,2010,27(1):12-15.Cao Huaishan,Tan Yunxian,Wanglei,et al.Microbial wax control technology in DaLu Lake oil field[J].Oilfield Chemistry,2010,27(1):12-15.
[13]石勇,姜兰,雷琦,等.微生物防蜡技术的研究与应用[J].化学工业与工程技术,2009,30(1):17-20.Shi Yong,Jiang Lan,Lei Qi,et al.Experimental investigation of microbial wax prevention and its application[J].JournalofChemicalIndustry&Engineering,2009,30(1):17-20.
[14]刘扬,司明林,魏立新,等.低温集输管道沉积速率及热洗周期的确定与分析[J].科学技术与工程,2010,10(10):2456-2458.Liu Yang,Si Minglin,Wei Lixin,et al.Determination and analysis of deposition rate and heat washing period of low temperature gathering and transportation pipeline[J].Science and Technology and Engineering,2010,10(10):2456-2458.