井下节流工艺在徐深气田的应用

摘要

针对采用井下节流装置的A井开展地面工艺适应性评价试验。通过采取停运采气管道电热带、调节天然气换热量的方法，监测地面工艺管道的运行压力、运行温度、冻堵时间等参数，研究各项参数与水合物的生成关系。A井应用井下节流装置后的采气管道运行压力、电伴热功率和加热炉功率明显降低，地面工艺优化空间大。徐深气田推广井下节流工艺，可有效降低地面工艺建设投资，减少能源消耗和药剂使用，有助于提高气田开发经济效益。%This paper researches into adaptability evaluation test of surface engineering for downhole throttling technology applied in A well. Some influential factors that influence the generation of hydrate have been determined by stopping ribbon heater and adjusting heating furnace. The operating pressure, operating temperature and freeze-blockage time were monitored.Research has shown that the operating pressure of pipeline was decreased.There is a relatively large optimization space of ribbon heater and heating furnace power.Both elec-tric energy and the medicaments have been saved. The downhole throttling technology can save many investments on surface engineering,and increase the economic benefit.