深水隔水管疲劳多测点数据传输与仿真研究  

Simulation of multi-point data transmission scheme for deepwater marine riser fatigue

作　　者：鲁丰坤 王勇[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524057 [2]西北工业大学航海学院,西安710072

出　　处：《国外电子测量技术》2015年第12期18-22,共5页Foreign Electronic Measurement Technology

基　　金：国家科技重大专项(2011ZX05026-001-06)资助项目

摘　　要：深水隔水管是海洋油气钻探开发必不可少的关键设备,也是深水油气勘探开发中最脆弱、最危险的部件。涡激振动、底部井口转角过大、平台的振荡和抖动等因素都可能导致隔水管疲劳损伤甚至断裂破坏,不仅造成极大的经济损失,而且诱发严重的生态灾难。隔水管疲劳监测是确保深水隔水管安全作业的重要保障,在预防隔水管事故方面具有不可或缺的作用。为了监测隔水管整体响应,需要沿隔水管按一定规则离散布放大量监测设备。疲劳参数信息的传输是隔水管疲劳监测的一项核心技术和难点。为了确保疲劳参数在各测点与接收端之间的高效传输,研究了3 000m水深条件下,5测点与接收端的通信问题,提出了时分复用与频分复用结合的通信方案。仿真结果表明,在确保检测概率的前提下,所提方案可以有效克服远近效应和各测点之间的干扰问题。Deepwater marine riser is the key equipment essential for the development of marine oil and gas drilling, as well as the most vulnerable and the most dangerous part of deepwater oil and gas exploration and development. VIV, the bottom of the well head angle is too large, platform of oscillation and jitter factors may cause the platform riser fatigue damage or even fracture damage, not only caused great economic losses, but also induce serious ecological disaster. Ma- rine riser fatigue monitoring is an important guarantee for ensuring the safety of deepwater riser operations, and it also plays an indispensable rote in the riser of accident prevention. In order to monitor riser overall response, a lot of discrete distribution monitoring equipment needs to be put along the marine riser by certain rules. Fatigue parameter information transmission is a core of riser fatigue monitoring technology and difficulty. In order to ensure the efficient transmission of fatigue parameters between the measuring point and the receiving end, this paper studies five-point communication prob lems with the receiving end, under the condition of 3 000 m water depth, so that a communication scheme combined time division multiplexing with frequency division multiplexing is proposed. The simulation results show that under the prem- ise of ensuring detection probability, the proposed scheme can effectively overcome the near-far effect and the interference problem between each measuring point.

关 键 词：深水隔水管疲劳 远近效应 信道干扰 

分 类 号：TN929.3[电子电信—通信与信息系统]