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天然气与石油 NATURAL GAS AND OII
2017年6月
塔中不稳定凝析油管输存在问题及对策
朱丽静’杨勇’周旋’宋雷勇’胡益武’
1.中国石油集团工程设计有限责任公司西南分公司，四川成都610041； 2.中国石油天然气股份有限公司塔里木油田分公司，新疆库尔勒841000
摘要：集气站不稳定凝析油向处理厂管输过程中，因未达设计输量，输送过程中压力降低，轻经组分、天然气逐渐析出，易出现气阻现象，造成凝析油管线压差过大的间题，导致管道起始端超压从而无法正常生产的情况出现。分别通过清管作业、注水置换或改变末端压力的方式在短时间内聚解管道压差不再继埃增大；可通过新建内蒸流程、天然气增压和原油泵输的流程，有效解决凝析油管道压差大的问题，但新建压缩机投资高，后期运行维护成本高，督未实施；在周边稳定凝析油拉运点建设输油泵和输油管线接入集气站凝析油出口处，提高凝析油管线输量，从面有效解决凝析油管输压差大的间题，且能降低凝析油拉运费。
关键词：不稳定凝析油；自压输送；长距离输送；压差过大；泵输；闪蒸 DOI:10. 3969/ j. issn.1006 5539. 2017. 03. 005
ExistingIssues and CountermeasuresforPipelineTransportation
ofTazhongUnstableCondensate
Zhu Lijing', Yang Yong", Zhou Xuan", Song Leiyong", Hu Yiwu"
1. China Petroleum Engineering Co. , Ltd. Southwest Company, Chengdu, Sichuan, 610041, China ;
2. PetroChina Tarim Oilfield Company, Korla, Xinjiang, 841000, Chin:
Abstract: Due to the development of condensate gas field, wellhead gas-liquid transportation, pipeline transportation at gas gathering are usually adopted. As the condensate after separation contains saturated dissolved gas, during transmission process, because of the pressure reducing, light hydrocarbon aaeresseaeenenaeeseee pressure for condensate pipeline and abnomal operation due to overpressure at starting section, pigging injection replacement or changing terminal pressure are used to relieve the differential pressure fron increasing in short time; by establishing new process for flashing, gas boosting and crude oil pump flow, the issue of large differential pressure for condensate pipeline can be solved effectively. Yet, as new compressor is coming with high investment and operation and maintenance costs at later stage, it is not implemented temporarily ; oil pump and oil pipelines can be set up at the surounding stable condensate site to connect the outlet of condense at gathering station to enhance the output of condensate pipeline and effectively solve the issue of high differential pressure for condensate.
收稿日期：20170206
基金项目：中国石油塔中I号凝析气田中古8-中古43区块地面工程（S2011-8D）
作者简介：朱丽静（1984－），女，四川仁寿人，工程师，主要从事油气集输系统设计工作。
万方数据