矿场压裂停泵水击信号滤波效果评价指标研究
Evaluation Indices for Filtering Performance of Pump-Stop Water Hammer Signals in Field Fracturing
胡晓东 1王雅晶 1丘阳 1易普康 1蒋宗帅 1熊壮1
作者信息
- 1. 油气资源与工程全国重点实验室(中国石油大学(北京)),北京 102249;中国石油大学(北京)非常规油气科学技术研究院,北京 102249
- 折叠
摘要
采用水击压力波监测方法进行压裂诊断时,为了准确评价停泵水击压力波信号滤波算法的性能,针对国内某水平井的实测水击信号及其对滤波结果的实际需求,采用倒谱响应分辨率RC和倒频率峰值信噪比RQSN作为水击信号滤波效果的评价指标,以该指标和滤波效果的同步性为基本依据,根据指标对滤波效果的灵敏性评价滤波指标的可靠程度.研究结果表明,高频水击信号的Rc和RQSN与井场信号滤波效果正相关,且呈现出良好的灵敏性,因此能够采用倒谱响应分辨率和倒频率峰值信噪比来评价矿场压裂停泵水击压力波高频信号的滤波效果.研究结果为现场信号特征分析、滤波算法优化及滤波模型现场应用的有效性评估提供了技术途径.
Abstract
To accurately evaluate the performance of the filtering algorithms for pump-stop water hammer pressure wave signals when water hammer pressure wave monitoring method is used for fracturing diagnosis,the resolution of the cepstrum response Rc and the signal-to-noise ratio of the quefrency peak RQSN were adopted as evaluation indices for filtering performance of water hammer signals based on the measured water hammer signal of a horizontal well in China and its actual demand for filtering results.Based on the synchronization of the indices and the filtering performance,the reliability of the filtering indices was evaluated according to the sensitivity of the indices to the filtering performance.The results show a positive correlation between the Rc and RQSN of the high-frequency water hammer signals and the filtering performance of the well-site signals,showing good sensitivity.Therefore,Rc and RQSN can be used to evaluate the filtering performance of the pump-stop water hammer pressure wave high-frequency signal in field fracturing operations.The research results provide a technical approach for the feature analysis of the field signals,the optimization of the filtering algorithms,and the effectiveness evaluation of the filtering models in the field applications.
关键词
水力压裂诊断/水击压力波监测/水击信号/滤波效果/倒谱响应/倒频率峰值信噪比Key words
hydraulic fracturing diagnosis/water hammer pressure wave monitoring/water hammer signal/filtering performance/cepstrum response/signal-to-noise ratio of quefrency peak引用本文复制引用
出版年
2024
NETL
NSTL
万方数据