隔水管振动导致的ADCP流速测量误差分析  

Error analysis of ADCP velocity measurement caused by riser vibration

作　　者：邓欣 刘晓东[2] 李保军[2] 申晓红[2] 王海燕[2] 

机构地区：[1]湛江南海西部石油勘察设计有限公司,湛江524000 [2]西北工业大学航海学院,西安710000

出　　处：《国外电子测量技术》2015年第9期26-28,共3页Foreign Electronic Measurement Technology

基　　金：国家科技重大专项(2011ZX05026-001-06);国家自然科学基金(51249005;60972153);教育部博士点基金(20106102120013;2009610211038)资助项目

摘　　要：隔水管是深水钻井的先决条件,是连接海面平台和海底井口的咽喉要道。但是,在洋流作用下隔水管极易产生疲劳损伤。因此,钻井期间监测隔水管处的洋流对隔水管的安全至关重要。提出了按照一定规则沿隔水管外壁布放ADCP测点监测其周围流速的新方法。但是,运用此种方法测流时,隔水管的运动给流速测量设备引入测量误差。为此,阐述了误差产生的原因,并对误差进行理论分析。分析结果表明,隔水管振动导致的ADCP测流误差可以忽略不计,所提出的测流方法满足监测要求。Riser,which is a prerequisite for deepwater drilling,is connected to the sea platforms and subsea wellhead choke.However,the riser in the role of ocean currents can easily produce fatigue damage.Therefore,for the safety of riser,it is essential to monitor the ocean currents which across the riser during drilling.In this paper,a new method was proposed,which put some ADCP points along the outer wall covering of riser to measure flow rate according to certain rules.However,when using this method to measure flow rate,riser motion introduce measurement errors to the flow measurement device.To this end,this paper analyzes the causes of errors generated.Second,expand the theoretical analysis,the results from the analysis showed that ADCP flow measurement error caused by riser vibration could neglect.Flow measurement method that described in this paper is also feasible.

关 键 词：洋流 ADCP 隔水管振动 误差分析 

分 类 号：TP274.5[自动化与计算机技术—检测技术与自动化装置]