摘要
为解决排水采气工艺中起泡剂和消泡剂用量过大、消泡不彻底、工艺复杂等问题,研制了一种气井温度响应型自消泡智能泡排剂TS-1,并对其性能进行了评价。研究表明:在温度为80℃、矿化度为20×10^(4)mg/L的条件下,泡排剂有较好的起泡性能和稳定性;质量分数为0.2%的泡排剂溶液能够在20℃左右自身完成相态的转变,由起泡性转变为消泡性,起泡体积达到420 mL,泡沫半衰期达到13 min;地层砂对泡排剂溶液的起泡能力影响较小,携液率达到84.8%,20 min后自消泡率达到84.3%;在加入增效剂ESAB后,自消泡率接近100.0%,自消泡能力提升;气井自消泡智能泡排剂在井口位置及地面管线中,受环境温度的影响,可迅速自消泡,避免了加入消泡剂的步骤,简化了操作流程,并有效提高了泡沫排水作业的效率。自消泡智能泡排剂成功应用后,平均日增产气4000 m^(3),平均日增排液2.8 m^(3),增气排液效果明显。该成果为气井排水采气提供了一种新的技术思路,具有重要的矿场应用价值。
To solve the problems of excessive consumption of foaming agents and defoaming agents,incomplete defoaming,and complex processes in liquid drainage gas production technology,a gas well temperature-responsive self-defoaming intelligent gas drainage foaming agent TS-1 was developed,and its performance was evaluated.The study shows that the foaming agent has good foaming performance and stability at a temperature of 80℃and a salinity of 20×10^(4)mg/L;a 0.2%foaming agent solution can undergo a phase transition by itself around 20℃,changing from foamability to defoamability,with a foam volume reaching 420 mL and a foam half-life reaching 13 minutes;formation sand has little effect on the foaming ability of the foaming agent solution,with a liquid-carrying rate of 84.8%.After 20 minutes,the self-defoaming rate reached 84.3%;after adding the synergistic agent ESAB,the self-defoaming rate approached 100%,and the self-defoaming ability was enhanced;at the wellhead position and in surface pipelines,the self-defoaming intelligent foaming agent for gas wells can rapidly self-defoam under the influence of ambient temperature,avoiding the step of adding defoaming agents,simplifying the operation process,and effectively improving the efficiency of foam drainage operations.After the successful application of the self-defoaming intelligent foaming agent,the average daily gas production increase was 4000 m^(3),and the average daily liquid discharge increase was 2.8 m^(3),showing significant gas increase and liquid discharge effects.This achievement provides a new technical approach for gas well liquid drainage gas production and has important field application value.
作者
杜竞
陈君
毛玉昆
许鸷宇
廖丽
冶克杰
李刚
侯宝峰
DU Jing;CHEN Jun;MAO Yukun;XU Zhiyu;LIAO Li;YE Kejie;LI Gang;HOU Baofeng(PetroChina Qinghai Oilfield Company,Oil and Gas Process Research Institute,Dunhuang,Gansu 736202,China;PetroChina Qinghai Oilfield Company,No.1 Gas Production Plant,Golmud,Qinghai 816000,China;Hubei Key Laboratory of Oil and Gas Drilling and Production Engineering,Yangtze University,Wuhan,Hubei 430100,China)
出处
《特种油气藏》
北大核心
2025年第4期136-142,共7页
Special Oil & Gas Reservoirs
基金
国家自然科学基金“纳米颗粒协同阳-非离子Gemini表活剂润湿反转体系的构筑及其机理研究”(51704036)。
关键词
泡排剂
温度敏感型
排水采气
自消泡
气井
gas drainage foaming agent
temperature-sensitive
liquid drainage gas production
self-defoaming
gas well
