深水钻井隔水管涡激振动特性的数值模拟研究  

Numerical simulation of drilling riser vortex induced vibration characteristics in deepwater

作　　者：王嘉松[1] 蒋世全 许亮斌 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]中海油研究总院,北京100028

出　　处：《石油钻采工艺》2015年第1期30-35,共6页Oil Drilling & Production Technology

基　　金：国家科技重大专项子课题"深水油气田开发钻完井工程配套技术"(编号:2008ZX05026-001;2011ZX05026-001);国家自然科学基金"深水隔水管涡激振动抑制装置的高精度流固耦合模拟研究"(编号:51079084)

摘　　要：深水钻井隔水管作为深水油气开发的关键部件必然面临涡激振动及其疲劳损坏这一重大安全问题,正受到广泛关注。基于精细流场模拟并耦合结构动力响应的流固耦合方法是准确分析隔水管涡激振动特性的必然趋势。文中总结了"十一五"期间和正在进行的"十二五"课题在数值模拟方面的部分研究成果,针对简化的和实际尺寸的隔水管所涉及的涡激振动问题,提出高精度流固耦合分析技术,建立了隔水管涡激振动分析可靠的物理模型、数学模型和数值模拟方法。通过对比实验验证了模型的可靠性。基于简化和实际情况下(海况、结构、尺寸等)钻井隔水管涡激振动进行了大量的数值模拟研究,给出了高雷诺数下具有实际海况的几种典型洋流条件,如剪切流、亚临界和临界流条件下实际尺寸隔水管的涡激振动特性,以及顶部张力控制隔水管涡激振动的效果。Offshore oil and gas exploration and development are undergoing a strategic shift to deep and ultra-deep waters. As a critical part of deepwater oil and gas development, deepwater drilling riser will surely be confronted with the major safety problem of vortex induced vibrationg(VIV), and fatigue failure and it is attracting widespread attention. Fluid-structure coupling based on reifned lfow ifeld simulation with coupled structural dynamic response is an inevitable trend to accurately analyze the VIV characteristics of riser. This paper summarizes some of the research results on numerical simulation during the “Eleventh Five-Year” period and the ongoing research projects in the “Twelfth Five-Year” period. To address the VIV problems of risers in simpliifed and practical sizes, a high-precision lfuid-structure coupling analysis technology is proposed, and reliable physical model, mathematical model and numeri-cal simulation are built for analysis of riser VIV. The comparative experiment veriifes the reliability of the models. The large number of numerical simulation researches on the VIV of drilling riser under simpliifed and practical cases (sea conditions, structure, size, etc.) show the VIV characteristics of riser with practical size under several typical ocean currents with a high reynolds number high under actual sea conditions, such as shear lfow, subcritical lfow and critical lfow, as well as the controlling effect of top tension on the VIV of riser in some way.

关 键 词：钻井隔水管 涡激振动 流固耦合 高雷诺数 剪切流 顶部张力 数值模拟 

分 类 号：TE21[石油与天然气工程—油气井工程]