苏里格气田快速排液技术  

Rapid drainage technology in Sulige gas field

作　　者：韩红旭 贾建鹏[2,3] 白建文[2,3] 邵振鹏 HAN Hongxu;JIA Jianpeng;BAI Jianwen;SHAO Zhenpeng(Engineering Supervision Office of PetroChina Changqing Oilfield Company,Xi′an,Shaanxi 710018,China;Research Institute of Petroleum Technology,PetroChina Changqing Oilfield Company,Xi′an,Shaanxi 710018,China;National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields,Xi′an,Shaanxi 710018,China;Well Testing Branch of CNPC Bohai Drilling Engineering Co.,Ltd.,Langfang,Hebei 065007,China)

机构地区：[1]中国石油长庆油田分公司工程监督处,陕西西安710018 [2]中国石油长庆油田分公司油气工艺研究院,陕西西安710018 [3]低渗透油气田勘探开发国家工程实验室,陕西西安710018 [4]中国石油集团渤海钻探工程有限公司油气井测试分公司,河北廊坊065007

出　　处：《油气井测试》2020年第1期35-42,共8页Well Testing

摘　　要：苏里格地区大量气井储层改造时进入地层及井筒的液体无法快速、有效返排。为避免对储层造成二次伤害,影响气井产能,统计该地区大量气井排液数据,结合现场施工经验,分析了影响气井压后排液效果的主要因素;对常用关放排液、液氮伴注排液、连续油管气举排液等技术从原理、适用条件、使用方法等方面进行讨论,结合现场实际应用情况进行类比分析,提出不同排液工艺的优化方法。结果表明,合理利用地层弹性能量和气体携液能力是提高排液效率的重要手段。根据气井压后的实际情况选择合理的排液方式,可达到指导作业现场快速排液的目的。During the stimulation of a large number of gas well reservoirs in the Sulige area,liquids entering the formation and wellbore cannot be quickly and effectively returned.In order to avoid the re-damage to the reservoir and affect gas well productivity,this paper collected a large number of gas well drainage data in the area.The main factors affecting the drainage effect after gas well pressure combined with the construction experience.The commonly used technologies such as shut-off drainage,liquid nitrogen associated injection drainage,and coiled tubing gas lift drainage were discussed in terms of principles,applicable conditions,and usage methods.Based on the analog analysis of the actual application in the field,an optimization method for different drainage processes is proposed.The results show that the rational use of formation elastic energy and gas-carrying capacity is an important means to improve drainage efficiency.According to the actual situation after gas well pressure,a reasonable drainage method can be selected to guide the rapid drainage of the operation site.

关 键 词：苏里格气田 气井排液 关放排液 液氮伴注排液 气举排液 工艺优化 应用效果 

分 类 号：TE353[石油与天然气工程—油气田开发工程]