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| 1 | The effects of sulfide stress cracking on the mechanical properties and intergranular cracking of P110 casing steel in sour environments显示文摘Variation and degradation of P-110 casing steel mechanical properties, due to sulfide stress cracking (SSC) in sour environments, was investigated using tensile and impact tests. These tests were carried out on specimens, which were pretreated under the following conditions for 168 hours temperature, 60 °C; pressure, 10 MPa; H2S partial pressure, 1 MPa and CO2 partial pressure, 1 MPa; preload stress, 80% of the yield strength (σs); medium, simulated formation water. The reduction in tensile and impact strengths for P-110 casing specimens in corrosive environments were 28% and 54%, respectively. The surface morphology analysis indicated that surface damage and uniform plastic deformation occurred as a result of strain aging. Impact toughness of the casing decreased significantly and intergranular cracking occurred when specimens were maintained at a high stress level of 85% σs . | Hou Duo Zeng Dezhi Shi Taihe Zhang Zhi Deng Wenliang | 2013 | Petroleum Science2013，10，3： | 4 |
| 2 | Theoretical and experimental study of the thermal strength of anticorrosive lined steel pipes显示文摘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. | Zeng Dezhi Deng Kuanhai Lin Yuanhua Shi Taihe Shi Daiyan Zhou Lizhi | 2014 | Petroleum Science2014，11，3： | 2 |
| 3 | Effect of Plastic Deformation and H_2S on Dynamic Fracture Toughness of High Strength Casing Steel显示文摘The effects of plastic deformation and H2 S on fracture toughness of high strength casing steel(C110 steel) were investigated. The studied casing specimens are as follows: original casing, plastic deformation(PD) casing and PD casing after being immersed in NACE A solution saturated with H2S(PD+H2S). Instrumented impact method was employed to evaluate the impact behaviors of the specimens, meanwhile, dynamic fracture toughness(JId) was calculated by using Rice model and Schindler model. The experimental results show that dynamic fracture toughness of the casing decreases after plastic deformation. Compared with that of the original casing and PD casing, the dynamic fracture toughness decreases further when the PD casing immersed in H2 S, moreover, there are ridge-shaped feature and many secondary cracks present on the fracture surface of the specimens. Impact fracture mechanism of the casing is proposed as follows: the plastic deformation results in the increase of defect density of materials where the atomic hydrogen can accumulate in reversible or irreversible traps and even recombine to form molecular hydrogen, subsequently, the casing material toughness decreases greatly. | 曾德智 ZHANG Naiyan TIAN Gang HU Junying ZHANG Zhi SHI Taihe | 2015 | Journal of Wuhan University of Technology(Materials Science)2015，30，2： | 1 |
| 4 | Equations calculate collapse pressures for casing strings显示文摘 | HAN Jianzeng SHI Taihe | 2001 | Oil and Gas Journal2001，99，4： | 1 |
| 5 | Experimental studies on corrosion of cement in CO 2 injection wells under supercritical conditions显示文摘 | Lin Yuanhua Zhu Dajiang Zeng Dezhi Yang Yuanguang Shi Taihe Deng Kuanhai Ren Chengqiang Zhang Deping Wang Feng | 2013 | Corrosion Science2013，，： | 1 |
| 6 | Non-uniform Loading Affects Casing Collapse Resistance显示文摘 | Han Jianzeng Shi Taihe | 2001 | Oil & Gas Journal2001，7，11： | 1 |
| 7 | Non - uniform loading affects casing collapse resistance显示文摘 | HAN Jianzeng SHI Taihe | 2001 | Oil & Gas Journal2001，06，： | 1 |
| 8 | Equations calculate pressures for casing strings显示文摘 | HAN JIANZENG SHI TAIHE | 2001 | Oil & Gas Journal2001，，22： | 1 |
| 9 | Non-uniform loading affects easing collapse resistance 显示文摘 | HAN Jianzeng SHI Taihe | 2001 | Oil & Gas Journal2001，06，： | 1 |
| 10 | Research on Stress Corrosion Sensitivity of C110 Casing in Wellbore Protection Fluid显示文摘 | Dezhi Zeng Rui Chen Zhi Zhang Liyun Shao Guoping Li Gang Tian Taihe Shi | 2012 | Energy Procedia2012，，： | 1 |
| 11 | Non uniform loading affects casing collapse resistance显示文摘 | Han Jianzeng Shi Taihe | 2001 | Oil & Gas Journal2001，99，25： | 1 |
| 12 | Equations calculate collapse pressures for casing strings显示文摘 | Han Jianzeng Shi Taihe | 2001 | Oil & Gas Journal2001，99，4： | 1 |
| 13 | Non-uniform loading affects casing collapse resistance显示文摘 | Han Jianzeng Shi Taihe | 2001 | Oil & Gas Journal2001，99，25： | 1 |
| 14 | Stress Corrosion Cracking of High-strength Drill Pipe in Sour Gas Well显示文摘In high sour gas reservoir drilling process, it happens occasionally that high-strength drill pipe suffers brittle fracture failure due to stress corrosion cracking, and poses serious hazard to drilling safety. To solve this problem, this paper studied the stress corrosion cracking mechanism and infl uencing factors of highstrength drill pipe in sour environment with hydrogen permeation experiments and tensile tests. We simulated practical conditions in laboratory and evaluated the stress corrosion cracking performance of the high-strength drill pipe under conditions of high stress level. For the problems occurring in use of high-strength drill pipe on site, the paper proposed a technical measure for slower stress corrosion cracking. | 张智 LI Jing ZENG Dezhi HU Junying HOU Duo ZHANG Liehui SHI Taihe | 2014 | Journal of Wuhan University of Technology(Materials Science)2014，29，4： | 0 |
| 15 | Synergistic effect of erosion and hydrogen on properties of passive film on 2205 duplex stainless steel显示文摘Stainless steels have shown great potential in the application of offshore oil and gas industry.However,the internal surface of stainless steel pipeline may simultaneously suffer erosion from the fluid media inside the pipeline and the damage of hydrogen that is generated from the external activities such as cathodic protection.The synergistic effect of erosion and hydrogen on the properties of passive film on 2205 duplex stainless steel was studied for the first time in a loop system coupled with a hydrogen-charging cell.The components,protective performance and semiconductive structure as well as properties of the passive film under different conditions were investigated using in-situ electrochemical techniques,surface characterization and computational fluid dynamics simulation.The results show that the combination of erosion and hydrogen could greatly thin the passive film,furthermore,the Fe^(3+)/Fe^(2+)ratio and O_(2)^(-)/OH^(-)ratio in the passive film also decrease dramatically under such a condition.Therefore,the hydration degree of the passive film greatly increases,resulting in an increase in active sites and a decrease in the stability of the passive film.Erosion could destroy the passive film through the impact of sand particles and accelerate the mass transfer process of electrochemical reaction.While hydrogen can not only enhance the charge transfer process,but also make the passive film highly defective.Under the combination of erosion and hydrogen condition,erosion could enhance the hydrogen damage and simultaneously hydrogen could also enhance erosion.Therefore,the synergistic effect of erosion and hydrogen could dramatically change the passive film component,decrease the protective performance,and increase the susceptibility of pitting corrosion of 2205 stainless steel in Cl-containing environment. | Jiuyi Li Xiankang Zhong Tianguan Wang Tan Shang Junying Hu Zhi Zhang Dezhi Zeng Duo Hou Taihe Shi | 2021 | Journal of Materials Science & Technology2021，，8： | 0 |
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