一种抽油机示功图数据无损压缩存储方法  

A lossless data compression and storage method of pump dynamometer

作　　者：李金诺[1] 龚仁彬[1] 李群[1] 王从镔[1] 姚刚[1] 

机构地区：[1]中国石油勘探开发研究院西北分院,甘肃兰州730020

出　　处：《石油学报》2016年第2期266-272,共7页Acta Petrolei Sinica

基　　金：中国石油天然气集团公司油气生产物联网系统项目(A11)资助

摘　　要：抽油机示功图数据的存储是油田信息化重点关注的问题之一。若将抽油机示功图存储在实时数据库中,每口井每幅需要投入500个数据点进行存储,成本高昂;传统的抽油机示功图存储方法是将示功图数据存储在关系数据库中,此方法读取效率不高,不便于进行实时数据分析,且需要在油田生产作业区及作业区以上组织机构部署关系数据库服务器,代价依然昂贵。生产物联网示功图数据压缩方法,经过超过2×104幅示功图数据的计算、分析和验证,可以通过数据处理、精度确认、求取差值和数据存储4步计算将抽油机示功图数据有效压缩至原数据大小的1/250,直接存储于实时数据库中,实现了降本增效的目的。该方法经过中国石油天然气集团公司相关油气田公司的试用,验证了其实用性,节约了投资成本。Data storage of the pump dynamometer is one of key issues in oilfield informatization.If the pump dynamometer data are stored in real-time database,500 data nodes should be used to store a piece of data for each well,thus leading to a high cost.In the use of traditional methods,dynamometer data are saved in relational database.However,this solution shows a lower reading efficiency,unbeneficial to real-time data analysis.Moreover,it is required to deploy database servers in oilfield production-operation zones and the organizations above the operation zones,and the cost is also higher.In application of the dynamometer data compression method for internet of things in production,through the calculation,analysis and validation on more than twenty thousand pieces of dynamometer data,pump dynamometer data can be effectively compressed to 1/250 of original data size by four steps,i.e.,data processing,precision confirmation,difference solution and data storage.Such data can be saved in real-time database to reduce cost and improve effect.This solution has been adopted by several sub oil/gas field companies of CNPC to validate the practicability and save the investment cost.

关 键 词：抽油机 示功图 数据压缩 实时数据库 物联网 

分 类 号：TE933[石油与天然气工程—石油机械设备]