摘要
针对传统清蜡球功能单一、不具备溶解性且容易发生卡球、蜡堵事故的不足,设计制备了一种适用于油田集输系统、既具有物理清蜡功能、又具备化学防蜡效果的可溶性清蜡球。采用挂片法及自制动态防蜡率测试装置对所选防蜡剂进行静态防蜡率及动态防蜡率测试,通过压力机及自制室内动态溶解模拟装置对清蜡球进行物理性能及溶解性能评价实验,最后进行了现场测试。防蜡率测试结果表明,防蜡剂防蜡率最高可达50%且在应用于实际情况时效果更加明显;物理性能测试结果表明,所制不同配方的清蜡球承压能力均在2 MPa以上,在管线中运行时,均不会发生破碎,从而实现物理清蜡的作用;清蜡球动态溶解释放性能测试结果表明,清蜡球溶解释放速率随温度的上升逐渐增加,随含水率的增加逐渐减小,另外随着防蜡组分中防蜡剂含量的增加,其溶解释放速率呈现下降趋势,最高为0.28 g/h,最低为0.08 g/h,溶解释放速率较慢且可控,可满足不同管线防蜡需求。通过现场应用试验进行验证,取得了较好的结果。
In view of the shortcomings of traditional wax cleaner balls in terms of single function,insolubility and high risks of ball jamming and wax blocking,a soluble wax removal ball with both physical wax removal function and chemical wax inhibiting effect was designed and prepared for oilfield gathering system.The static wax prevention rate and dynamic wax prevention rate of the selected anti-wax agent were tested using the hanging method and the homemade dynamic wax prevention rate testing device,and the indoor physical performance and dissolution performance of the wax removal ball were evaluated by the press and the homemade indoor dynamic dissolution simulation device,and finally the field test was conducted.The results of the wax inhibiting rate test show that the wax inhibiting rate of the anti-wax agent can reach up to 50%and the effect is more obvious when applied to the actual situation.The results of the physical performance test show that the pressure-bearing capacity of the wax spheres of different formulations made is above 2 MPa and will not be broken when running in the pipeline,thus realizing the role of physical wax removal.The results of the dynamic dissolution and release performance of the anti-wax components in the wax spheres show that the dissolution and release rate of the wax spheres gradually increases with the rise of temperature.The test results show that the dissolution and release rate of the wax inhibiting component in the wax removal ball gradually increases with the rise of temperature while gradually decreases with the increase of water content.In addition,as the content of the wax inhibiting agent in the wax inhibiting component increases,the dissolution and release rate shows a decreasing trend.The dissolution and release rate of the wax inhibiting component varies under different conditions,with the highest being 0.28 g/h and the lowest being 0.08 g/h,and the dissolution and release rate is low and controllable,which can meet the demand of wax inhibiting in different pipelines.It
作者
张晓
燕永利
ZHANG Xiao;YAN Yongli(College of Chemistry and Chemical Engineering,Xi’an Shiyou University,Xi’an 710065,China)
出处
《中国科技论文》
CAS
北大核心
2023年第9期981-986,共6页
China Sciencepaper
基金
国家自然科学基金资助项目(21773183)
陕西省自然科学基金资助项目(2018JM2011)。
关键词
可溶性清蜡球
物理清蜡
化学防蜡
释放速率
现场应用
soluble wax removal ball
physical wax removal
chemical wax inhibiting
release rate
field application
