埕岛油田反复插拔桩区域就位风险及预防措施

doi:10.16183/j.cnki.jsjtu.2023.S1.09

上海交通大学学报 ›› 2023, Vol. 57 ›› Issue (S1): 25-29.doi: 10.16183/j.cnki.jsjtu.2023.S1.09

埕岛油田反复插拔桩区域就位风险及预防措施

安涛¹(), 林增勇¹, 张达²

1.中石化胜利石油工程有限公司,山东东营 257000
2.青岛环海海洋工程勘察研究院有限责任公司,山东青岛 266000

收稿日期:2022-07-07 修回日期:2022-07-25 接受日期:2022-08-22 出版日期:2023-10-27 发布日期:2023-11-10
作者简介:安涛(1985-),高级工程师,现主要从事生海上运行和风险管理工作.电话(Tel.): 0546-8552157;E-mail: ant5.ossl@sinopec.com.

Risk and Preventive Measures of Pile Placement in Chengdao Oilfield

AN Tao¹(), LIN Zengyong¹, ZHANG Da²

1. Shengli Petroleum Engineering Co., Ltd., Sinopec, Dongying 257000, Shandong, China
2. Qingdao Huanhai Marine Engineer Prospecting Institute Co., Ltd., Qingdao 266000, Shandong, China

Received:2022-07-07 Revised:2022-07-25 Accepted:2022-08-22 Online:2023-10-27 Published:2023-11-10

摘要/Abstract

摘要：

胜利埕岛油田位于现代黄河水下三角洲,海底地层复杂,沉积物粉土、粉质黏土互层变化大.近年来,动平台作业在同一井口或相近井口反复插拔桩作业次数越来越多.海上动平台反复插拔桩区域存在滑桩、穿刺、液化下沉风险,在该类型区域插桩存在较大隐患.针对该风险进行预防措施分析,降低动平台插桩风险.

关键词: 埕岛油田, 反复插拔桩, 滑桩, 穿刺, 液化下沉

Abstract:

Chengdao Oilfield is located in the modern Yellow River underwater delta, where the seabed strata are complex, and the sediment silt and silty clay have great interbedding changes. In recent years, an increasing number of jack-ups are installed and removed in the same wellhead or similar wellhead. There are risks of sliding pile, punch-through, and liquefaction and subsidence in the area where piles are repeatedly inserted and pulled out on offshore moving platform. Aimed at the risks, preventive measures are analyzed to reduce the risk of pile driving on jack-up platforms.

Key words: Chengdao Oilfield, piles repeatedly inserted and pulled, sliding pile, punch-through, liquefaction and subsidence

中图分类号:

P751

安涛, 林增勇, 张达. 埕岛油田反复插拔桩区域就位风险及预防措施[J]. 上海交通大学学报, 2023, 57(S1): 25-29.

AN Tao, LIN Zengyong, ZHANG Da. Risk and Preventive Measures of Pile Placement in Chengdao Oilfield[J]. Journal of Shanghai Jiao Tong University, 2023, 57(S1): 25-29.

图/表 3

表1

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参考文献 13

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土层编号	土层名称	深度/m	水下重度/ (kN·m^-3)	黏性土设计抗剪强度/kPa	粒状土设计抗剪强度,Φ/(°)	承载力系数
土层编号	土层名称	深度/m	水下重度/ (kN·m^-3)	黏性土设计抗剪强度/kPa	粒状土设计抗剪强度,Φ/(°)	N_q	N_r
1	粉土	0.0~2.1	7.5~9.5		13~18	3.9	2.6
2	粉土	2.1~7.1	8.5~10.5		25~28	10.7	10.9
3	粉砂	7.1~8.0	8.5~10.5		27~30	14.7	16.7
4	粉质黏土	8.0~11.2	8.0~10.0	42.2~65.6
5	粉土	11.2~14.6	8.5~10.5		27~30	14.7	16.7
6	粉砂	14.6~17.8	8.5~10.5		27~30	14.7	16.7
7	粉质黏土	17.8~19.1	8.0~10.0	57.6~85.8
8	粉土	19.1~20.0	8.5~10.5		28~32	18.4	22.4

土层编号	土层名称	深度/m	水下重度/ (kN·m^-3)	黏性土设计抗剪强度/kPa	粒状土设计抗剪强度,Φ/(°)	承载力系数
土层编号	土层名称	深度/m	水下重度/ (kN·m^-3)	黏性土设计抗剪强度/kPa	粒状土设计抗剪强度,Φ/(°)	N_q	N_r
1	淤泥	0.0~0.8	6.0~7.0	5.6~10.2
2	粉土	0.8~3.0	8.0~9.0		13~18	3.9	2.6
3	杂填土	3.0~5.4	8.0~9.0		13~18	3.9	2.6
4	粉土	5.4~7.6	8.5~9.5		23~27	10.7	10.9
5	粉砂	7.6~8.7	9.5~10.5		25~30	14.7	16.7
6	粉土	8.7~16.8	9.5~10.5		25~30	14.7	16.7
7	粉质黏土	16.8~18.1	10.0~11.0	53.4~86.5
8	粉土	18.1~20.0	10.0~11.0		28~32	18.4	22.4

土层编号	土层名称	深度/m	水下重度/ (kN·m^-3)	黏性土设计抗剪强度/kPa	粒状土设计抗剪强度,Φ/(°)	承载力系数
土层编号	土层名称	深度/m	水下重度/ (kN·m^-3)	黏性土设计抗剪强度/kPa	粒状土设计抗剪强度,Φ/(°)	N_q	N_r
1	粉土	0.0~2.5	7.2~7.9		13~18	3.9	2.6
2	粉土	2.5~3.2	8.0~9.0		18~22	6.4	5.4
3	粉质黏土	3.2~5.2	8.0~9.0	35.2~52.6
4	粉土	5.2~10.6	9.3~10.3		25~30	14.7	16.7
5	粉砂	10.6~17.2	9.8~10.5		25~30	14.7	16.7
6	粉质黏土	17.2~18.6	10.3~10.8	58.6~83.5
7	粉土	18.6~20.0	10.3~10.8		28~32	18.4	22.4

埕岛油田反复插拔桩区域就位风险及预防措施

Risk and Preventive Measures of Pile Placement in Chengdao Oilfield

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