参数自适应模糊控制的自动送钻技术研究  

Research of Auto-drilling Technology Based on Parameters' Self-adjusting Fuzzy Control

作　　者：郭芙琴[1] 华鹏涛[2] 

机构地区：[1]延安职业技术学院航运工程系,陕西延安716000 [2]西安工程大学电子信息学院,陕西西安710048

出　　处：《西南石油大学学报（自然科学版）》2012年第6期153-160,共8页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：陕西省核心科技技术创新项目(2009ZKC02–13);国家基本理论研究项目(2009CB724507–3)

摘　　要：针对传统送钻方式的不足及钻井过程复杂、数学模型难建立等特点,在简要分析交流变频自动送钻系统的工作原理和影响送钻的各因素之间关系后,提出将参数自调整模糊控制与交流变频恒钻压自动送钻相结合。通过对钻压趋势的判断,采用参数自调整模糊PI控制,实现对送钻电机转速的控制。该算法不需要精确的数学模型,可通过自学习实时修正控制参数。试验表明:控制效果良好,在保证恒钻压的基础上,可实现稳速送钻,提高了系统调节的快速性、自适应性和鲁棒性,精度高,现场应用证实此算法控制效果优越,可实现送钻稳态精度在±0.5 t之内,而且送钻更加平稳,控制算法亦具有通用性。Due to the defects of the traditional drilling method,as well as the complexity of the drilling process and difficult in establishing mathematical model,etc,this paper briefly analyzes the principle of auto-drilling system on AC frequency conversion and the relationship among all factors affecting auto-drilling and puts forward a technology that combines parameters＇ self-tuning fuzzy control with constant WOB（Weight On Bit）auto-drilling technology on AC frequency conversion.Based on the judgement of drilling pressure trend,the application of parameters＇ self-tuning fuzzy control leads to the control of the rig＇s speed.The algorithm does not need accurate mathematical model and can learn to fix control parameters in real time by itself.The test shows that the control system has good performance and high precision,ensuring constant WOB and stable speed in auto-drilling,and thus improving the rapidity,adaptability and robustness of system.The field applications prove that this algorithm control effect is superior,with the steady-state accuracy within ±0.5 t.The control algorithm can also be used in other auto-drilling systems.

关 键 词：交流变频钻机 恒钻压 自动送钻 参数自适应 模糊控制 

分 类 号：TE928[石油与天然气工程—石油机械设备]