Theoretical and experimental study of the thermal strength of anticorrosive lined steel pipes |
| |
Authors: | Zeng Dezhi Deng Kuanhai Lin Yuanhu Shi Taihe Shi Daiyan and Zhou Lizhi |
| |
Affiliation: | State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University), Chengdu, Sichuan 610500, China CNPC Key Laboratory for Tubular Goods Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China;CNPC Key Laboratory for Tubular Goods Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University), Chengdu, Sichuan 610500, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University), Chengdu, Sichuan 610500, China;Southwest Branch of Engineering Design Co. Ltd., CNPC, Chengdu, Sichuan 610500, China;Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China |
| |
Abstract: | Bimetallic lined steel pipe (LSP) is a new anti-corrosion technology. It is widely used to transport oil, gas, water and corrosive liquid chemicals. At present, the hydroforming pressure for LSP has been investigated theoretically and experimentally by most researchers. However, there are a few reports on the thermal strength of bimetallic LSP. Actually, the bimetallic LSP will be subjected to remarkable thermal load in the process of three layer polyethylene (3PE) external coating. Reverse yielding failure may occur on the inner pipe of the bimetallic LSP when it suffers from remarkable thermal load and residual contact pressure simultaneously. The aim of this paper is to study the thermal load and strength of the bimetallic LSP. A mechanical model, which can estimate the thermal strength of the bimetallic LSP, was established based on the elastic theory and the manufacture of the bimetallic LSP. Based on the model, the correlation between the thermal strength of the bimetallic LSP and residual contact pressure and wall thickness of the inner pipe was obtained. Reverse yielding experiments were performed on the LSP (NT80SS-316L) under different thermal loads. Experiment results are consistent with calculated results from the theoretical model. The experimental and simulation results may provide powerful guidance for the bimetallic LSP production and use. |
| |
Keywords: | Thermal strength reverse yielding mechanical model lined steel pipe residual contact pressure |
本文献已被 CNKI 维普 SpringerLink 等数据库收录! |
| 点击此处可从《石油科学(英文版)》浏览原始摘要信息 |
|
点击此处可从《石油科学(英文版)》下载全文 |
|