首页|Influence of the mechanical properties of materials on the ultimate pressure-bearing capability of a pressure-preserving controller

Influence of the mechanical properties of materials on the ultimate pressure-bearing capability of a pressure-preserving controller

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The pressure-preserving controller is the core part of deep in-situ pressure-preserving coring(IPP-Coring)system,and its pressure-preserving capability is the key to IPP-Coring technology.To achieve a good understanding of the influence of mechanical properties of materials on the ultimate pressure-bearing capability(UPB-Capability)of the pressure-preserving controller,the IPP-Coring experimental platform was developed to test the UPB-Capability of pressure-preserving controllers of four different materials.The experimental results show that the UPB-Capability of pressure-preserving controllers with different material varies greatly.A numerical model of the pressure-preserving controller was developed to study the influences of mechanical parameters of materials on the UPB-Capability of the pressure-preserving controller after the accuracy of the numerical model is verified by experiments.The results indicate that the yield strength(YS)and Poisson's ratio(PR)of the material have little effect on the UPB-Capability of the pressure-preserving controller,whereas the elastic modulus(EM)of the material has a significant effect.A generalized model of the UPB-Capability of the pressure-preserving controller is developed to reveal the mechanism of the influence of material properties on the UPB-Capability of the pressure-preserving controllers.Considering these results,the future optimization direction of the pressure-preserving controller and material selection scheme in practical engineering applications of the pressure-preserving controller are suggested.

In-situ pressure-preserving coringPressure-preserving controllerMaterial propertiesUltimate pressure-bearing capability

Xiao-Jun Shi、He-Ping Xie、Cong Li、Gui-Kang Liu、Zi-Jie Wei、Tian-Yu Wang、Ju Li、Qiu-Yue Li

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State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering,College of Water Resource and Hydropower,Sichuan University,Chengdu,610065,Sichuan,China

Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization,Institute of Deep Earth Sciences and Green Energy,College of Civil and Transportation Engineering,Shenzhen University,Shenzhen,518060,Guangdong,China

College of Mechanical Engineering,Sichuan University,Chengdu 610065,Sichuan,China

Jin Shi Drill Tech Co.,Ltd,Tangshan,063004,Hebei,China

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2024

10.1016/j.petsci.2024.04.003

石油科学(英文版)
中国石油大学（北京）

石油科学(英文版)

EI
影响因子：0.88
ISSN：1672-5107
年,卷(期)：2024.21(5)