|本期目录/Table of Contents|

[1]欧阳敏 吴 涛 李 列 李 林 邱 宇 朱 其.琼东南陆坡区复杂地形深水井场海底稳定性评估[J].中国海上油气,2020,32(04):179-189.[doi:10.11935/j.issn.1673-1506.2020.04.023]
 OUYANG Min WU Tao LI Lie LI Lin QIU Yu ZHU Qi.Seabed stability evaluation of deep water well site with complex topography in Qiongdongnan continental slope area[J].China Offshore Oil and Gas,2020,32(04):179-189.[doi:10.11935/j.issn.1673-1506.2020.04.023]
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琼东南陆坡区复杂地形深水井场海底稳定性评估()

《中国海上油气》[ISSN:1673-1506/CN:11-5339/TE]

卷:
第32卷
期数:
2020年04期
页码:
179-189
栏目:
海洋工程
出版日期:
2020-07-25

文章信息/Info

Title:
Seabed stability evaluation of deep water well site with complex topography in Qiongdongnan continental slope area
文章编号:
1673-1506(2020)04-0179-11
作者:
欧阳敏12 吴 涛1 李 列1 李 林1 邱 宇1 朱 其1
(1. 中海石油(中国)有限公司湛江分公司 广东湛江 524057; 2. 成都理工大学地球物理学院 四川成都 610059)
Author(s):
OUYANG Min12 WU Tao1 LI Lie1 LI Lin1 QIU Yu1 ZHU Qi1
(1. CNOOC China Limited, Zhanjiang Branch, Zhanjiang, Guangdong 524057, China; 2. Geophysics Institute, Chengdu University of Technology, Chengdu, Sichuan 610059, China)
关键词:
琼东南陆坡区 深水井场 海底稳定性 安全系数 潜在滑坡体 强度折减法
Keywords:
Qiongdongnan continental slope area deep water well site seabed stability safety factor potential sliding mass strength reduction method
分类号:
TE52
DOI:
10.11935/j.issn.1673-1506.2020.04.023
文献标志码:
A
摘要:
琼东南陆坡区海底坡角较大且浅层土强度低、松软易变形,易发生海底失稳,存在一定的滑坡风险,严重时可能引起海底井口倾覆和管线断裂等重大事故。基于FLAC 3D强度折减法建立了海底稳定性计算方法,分析了边坡安全系数的影响因素,并以琼东南陆坡区宝岛工区某深水井场为例,综合考虑浅层土强度的垂向非均质性及井口返出岩屑和钻井振动对海底稳定性的影响,通过二维模型计算得到了海底边坡安全系数,明确了井场潜在滑坡体位置及可能滑动方向。本文研究成果对于琼东南陆坡区及其他工区复杂地形深水井场海底稳定性评估具有一定的指导意义与借鉴作用
Abstract:
In view of the frequent failure of subsea Christmas tree system and difficulty in obtaining relevant data, the subsea Christmas tree system can be divided into three modules of the above-water, subsea and FPSO modules based on Bayesian network. A remaining life prediction model of subsea Christmas tree system is established by considering the interdependence relationships between different modules, and combining sudden failure with normal degradation trend. The remaining life of subsea Christmas tree system can be predicted through analyzing the reliability of corresponding modules and considering failure thresholds. The results show that the overall reliability of Christmas tree is lower than that of any individual module, and its degradation process goes fast at first and then slows down, generally distributed exponentially. High-intensive sudden failures will accelerate the failure of this system, thereby reducing the remaining life. The remaining life when considering the interdependence is significantly shorter than that without considering the interdependence

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备注/Memo

备注/Memo:
收稿日期:2020-03-18 改回日期:2020-06-29*“十三五”国家科技重大专项“琼东南盆地深水区大中型气田形成条件与勘探关键技术(编号:2016ZX05026-02)”部分研究成果。 第一作者简介: 欧阳敏,男,高级工程师,在读博士研究生,主要从事海洋地震资料采集处理解释、井场调查、深水地质灾害方面的研究工作。地址:广东省湛江市坡头区南调路22号信箱(邮编:524057)。E-mail:ouyangm@cnooc.com.cn。
更新日期/Last Update: 2020-07-20