基于整体法的深水钻井隔水管-导管系统静态性能分析  

Static performance analysis of riser-conductor system based on whole method in deep water drilling

作　　者：邓嵩 耿浩然 赵虹宇 朱硕 纪梦楠 夏一程 DENG Song;GENG Hao-ran;ZHAO Hong-yu(School of Petroleum Engineering, Changzhou University, Changzhou 213000, China)

机构地区：[1]常州大学石油工程学院

出　　处：《能源工程》2019年第4期13-21,共9页Energy Engineering

基　　金：国家自然科学基金资助项目(51574261)

摘　　要：提出了一种深水钻井隔水管-导管系统静态力学性能分析的新方法。将深水隔水管-导管视为整体,通过简化力学模型,建立了管柱系统整体的静态力学微分方程,分别确定各段管柱的有效轴向力和水平外载,研究了系统顶端和底端、泥线附近管柱端等薄弱部分的横向变形、弯矩和转角等静态力学性能。同时对一口深水井进行数值模拟分析,利用ABAQUS软件进行数值求解,得到系统整体的静力学分析结果,并将整体法与解耦法的结果相对比,可以看出解耦法的结果更加保守。同时进一步分析了顶张力、钻井平台横向偏移和海流流速、波浪高度以及导管尺寸对系统静态力学性能等因素的影响,研究发现各个因素对系统静态力学性能影响不一样,需要在海洋石油工程中进一步关注。A new method for the static performance analysis of the mechanical properties of the riser conductor system in deep water drilling was proposed. By taking the deep-water riser and water pipe as a whole, the static mechanical differential equitation of the string system by utilizing the simplified mechanical model was established to determine the effective axial force and horizontal load in each part of string respectively. And researches were conducted to study static mechanical properties, such as the lateral deformation at the top, bottom or near the mudline, bending moment and corner. At the same time, numerical simulation analysis of a deep well was carried out by using the ABAQUS, and then results of the static analysis of the whole system were obtained. Comparing result derived from the whole method with that from decoupling method, it could be seen that decoupling method results cannot reflect actual stress and stability of the whole riser-conductor system. In the meantime, factors such as top tension, lateral deviation of the drilling platform, ocean current, velocrty wave height and string size were analyzed on the static mechanical property of the whole system. The research indicated that each factor had different impact on the static mechanical property of the whole system, and further research need to be done in oceanic petroleum engineering.

关 键 词：隔水管-导管系统 整体方法 ABAQUS 

分 类 号：TE53[石油与天然气工程—油气田开发工程]