基于套管节箍自动跟踪识别技术的射孔深度控制方法  

Perforation Depth Control Method Based on Casing Hoop Automatic Tracking and Recognition Technology

作　　者：丛颜 Cong Yan(Sinopec Zhongyuan Petroleum Engineering Co.Ltd.,Downhole Special Operation Company,Puyang,457162,China)

机构地区：[1]中石化中原石油工程有限公司井下特种作业公司,河南濮阳457162

出　　处：《石油化工自动化》2022年第5期29-33,共5页Automation in Petro-chemical Industry

摘　　要：目前的射孔深度控制方法难以保证射孔施工精度,导致射孔深度存在误差,不能满足作业要求,开发了基于套管节箍自动跟踪识别技术的射孔深度控制方法。通过分析节箍信号特点,利用节箍信号滤波处理与识别,根据节箍信号的幅度变化调整门限电平,将最小误差的节箍位置作为最后的节箍深度,实现深度校正,完成射孔施工深度控制。经实验论证分析,通过该方法滤波处理后,测点位置数据的相对误差明显减小,对比A井和B井校正前后的射孔数据,经该方法校正后,射孔误差值分别为0.03m和0.01m,能够正常识别节箍信号,射孔作业精度在控制下得到了有效的提高,证明该方法具有可行性。The current perforation depth control method is difficult to ensure the accuracy of perforation construction, and result in errors in perforation depth, which cannot meet the operation requirements. A perforation depth control method based on the automatic tracking and identification technology of casing hoop is developed. By analyzing the characteristics of the hoop signal, using the filtering processing and identification of the hoop signal, the threshold level is adjusted according to the amplitude change of the hoop signal, and the hoop position with the minimum error is taken as the final hoop depth to realize the depth correction and complete the depth control of perforation construction. Through the experimental demonstration and analysis, the relative error of the measurement point position data is significantly reduced after the filtering processing of the method. Comparing the perforation data before and after the correction of well A and well B, the perforation error value is 0.03 m and 0.01 m respectively after the correction of the method, which can normally identify the hoop signal, and the perforation operation accuracy has been effectively improved under the control, which proves the that the method is feasible.

关 键 词：节箍信号 油田开发 射孔深度控制 自动化跟踪识别 滤波处理 

分 类 号：TE24[石油与天然气工程—油气井工程]