CAJ | 학술논문

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.
격수관시심수찬정적선결조건,시련접해면평태화해저정구적인후요도.단시,재양류작용하격수관겁역산생피로손상.인차,찬정기간감측격수관처적양류대격수관적안전지관중요.제출료안조일정규칙연격수관외벽포방ADCP 측점감측기주위류속적신방법.단시,운용차충방법측류시,격수관적운동급류속측량설비인입측량오차.위차,천술료오차산생적원인,병대오차진행이론분석.분석결과표명,격수관진동도치적ADCP측류오차가이홀략불계,소제출적측류방법만족감측요구.
Riser ,which is a prerequisite for deepwater drilling ,is connected to the sea platforms and subsea wellheadchoke .However ,the riser in the role of ocean currents can easily produce fatigue damage .Therefore ,for the safety ofriser ,it is essential to monitor the ocean currents which across the riser during drilling .In this paper ,a new method wasproposed ,which put some ADCP points along the outer wall covering of riser to measure flow rate according to certainrules .However ,when using this method to measure flow rate ,riser motion introduce measurement errors to the flowmeasurement device .To this end ,this paper analyzes the causes of errors generated .Second ,expand the theoreticalanalysis ,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 .