Lateral bearing characteristics of subsea wellhead assembly in the hydrate trial production engineering     

Jing Zeng  Wen-wei Xie  Bei-bei Kou  Jing-an Lu  Xing-chen Li  De-jun Cai  Hao-xian Shi  Ke-wei Zhang  Hua-qing Liu  Jin Li  Bo Li 《China Geology》2023,(3):455-465

Conductor and suction anchor are the key equipment providing bearing capacity in the field of deep-water drilling or offshore engineering, which have the advantages of high operation efficiency and short construction period. In order to drill a horizontal well in the shallow hydrate reservoir in the deep water,the suction anchor wellhead assembly is employed to undertake the main vertical bearing capacity in the second round of hydrate trial production project, so as to reduce the conductor runn...  相似文献   

A study on wetland classification model of remote sensing in the Sangjiang plain   总被引：1，自引：0，他引：1  

ZHANG Shu qing  ZHANG Shi kui  ZHANG Jun yan 《中国地理科学(英文版)》2000,10(1):68-73

1　ＩＮＴＯＤＵＣＴＩＯＮＷｅｔｌａｎｄｃａｎｐｅｒｆｏｒｍｅｎｏｒｍｏｕｓｆｕｎｃｔｉｏｎｓｉｎｒｅ ｓｏｕｒｃｅａｎｄｅｎｖｉｒｏｎｍｅｎｔａｄｊｕｓｔｍｅｎｔ ,ａｎｄｉｔｉｓｏｎｅｏｆｔｈｅｉｍｐｏｒｔａｎｔｅｃｏｌｏｇｉｃａｌｅｎｖｉｒｏｎｍｅｎｔｓｔｈａｔｈｕｍａｎｂｅ ｉｎｇｓｒｅｌｙｏｎ .Ｉｎｔｅｒｎａｔｉｏｎａｌｃｏｍｍｕｎｉｔｉｅｓｈａｖｅａｌｒｅａｄｙｐａｉｄ ｇｒｅａｔａｔｔｅｎｔｉｏｎｔｏｔｈｅｗｅｔｌａｎｄｒｅｓｅａｒｃｈ ,ａｎｄｓｏｍｅｆｏｒｅｉｇｎｅｒｓｈａｖｅｄｏｎｅ…  相似文献   

四道沟金矿围岩蚀变类型与矿床成因探讨     

褚向辉  陈其所 《黑龙江国土资源》2008,(8):56-57

金矿位于丹东境内城子坦—丹东复背斜的鸭绿江断裂构造带中,矿区内有3种矿化类型：含金蚀变破碎带、含金石英脉、含金硅化大理岩。其中含金蚀变破碎带十分发育,已构成工业矿体,是矿山开采的主要对象。  相似文献   

Morphodynamic response of an embayed beach to different typhoon events with varying intensities     

Lianqiang Shi  Junli Guo  Shenliang Chen  Yang Chang  Daheng Zhang  Zhaohui Gong 《海洋学报(英文版)》2023,(7):51-63

Beach erosion has occurred globally in recent decades due to frequent and severe storms. Dongsha beach, located in Zhujiajian Island, Zhejiang Province, China, is a typical embayed sandy beach. This study focused on the morphodynamic response of Dongsha beach to typhoon events, based on beach topographies and surficial sediment characteristics acquired before and after four typhoon events with varying intensities. The four typhoons had different effects on the topography and sediment characteris...  相似文献   

The Probability Density Function Related to Shallow Cumulus Entrainment Rate and Its Influencing Factors in a Large-Eddy Simulation     

Lei ZHU  Chunsong LU  Xiaoqi XU  Xin HE  Junjun LI  Shi LUO  Yuan WANG  Fan WANG 《大气科学进展》2024,(1):173-187

The process of entrainment-mixing between cumulus clouds and the ambient air is important for the development of cumulus clouds. Accurately obtaining the entrainment rate(λ) is particularly important for its parameterization within the overall cumulus parameterization scheme. In this study, an improved bulk-plume method is proposed by solving the equations of two conserved variables simultaneously to calculate λ of cumulus clouds in a large-eddy simulation. The results demonstrate that the impro...  相似文献