基于功图分析的有杆抽油泵故障诊断技术研究

Research on Fault Diagnosis of Sucker Rod Pumps Based on Analysis of Indicator Diagram

摘要:

在油井开采中,利用计算机技术准确判断油井井下故障,实现采油系统的数字化与智能化,是当今石油行业急需解决的重大难题之一；通过示功图分析诊断有杆抽油泵故障是油田分析泵况的主要手段,目前,国内外对示功图的识别还是主要依靠人完成,虽然计算机识别技术早已实现,但是,由于其准确度有限,并未得到推广；为此,在大量文献研究的基础上,对有杆抽油泵故障诊断技术进行了综述；首先介绍了抽油泵故障诊断技术的发展历程,其次对井下泵功图转换模型建立、泵功图特征值提取方法和特征值匹配方法的国内外功图识别技术进行了分析,最后指出了目前有杆泵故障诊断技术中存在的主要问题及今后需要努力的方向。

Abstract:

It is an urgent need to solve the problems of diagnosing the fault under the oilfields accurately and achieving oil extraction system’s digital and intelligent in the opening up oilfields. Through the analysis of the indicator diagrams to diagnose sucker rod pump failure is a major means to analyze the condition of pump in oil field. At present, it is still on people to recognize the indicator diagram no matter at home and abroad. Although the technology of computer identification has been implemented, however, it has not been promoted due the limited of its accuracy. So, based on the research of literature the fault diagnosis of sucker rod pumps is summarized. firstly introduces the evolution of the technology of sucker rod pump’s fault diagnosis, then analyzes the technology of the recognition of indicator diagram at home and abroad, including the transformation model of the pump indicator diagrams, the characteristic values extraction methods of pump indicator diagrams and the matching methods of characteristic values, and points out the main problems existing in the fault diagnosis of the sucker rod pump and indicates the improvement direction of the future. 