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Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1127
... ABSTRACT Aiming at the problems of high brittleness, low tensile strength, poor impact resistance and fracture resistance of oil well cement stone, three kinds of inorganic fibers with high modulus, high strength and good dispersibility were selected to toughen the cement stone according to the...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1104
... adapted for work on the hydrothermal ore fields of PMS of the Mid-Atlantic Ridge. metals & mining ore field gravitational process drilling equipment engineering-geological study upstream oil & gas machinery prospect reservoir characterization strength engineering-geological...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1116
... sand sample, the initial shear stiffness and peak strength of the hydrate sample increased significantly with the increase of the shear rate, but it was not observed that the residual strength was affected by the shear rate. The volume strain of hydrate samples gradually changes from shear compression...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1227
.... Then the ice mechanical properties and the ice resistance of a polar vessel are simulated. It is obtained that: (1) the numerical ice model is suitable for compression and bending strength calculation and has advantage on icebreaking simulation; (2) and the FEM/SPH coupling method is able to simulate...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1251
... ice loads according to current RS Rules for these ship design cases. ice load calculation displacement vertical side application artificial intelligence strength ice load hydrodynamic model algorithm marine transportation ship distribution height russian maritime register...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1335
... ABSTRACT In recent years, exploration and development of gas hydrate in deep water has become more and more important. The problems encountered in gas hydrate cementing are low temperatures, short sealing segment, and large annulus. The strength of normal portland cement develops too slowly at...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1260
... ABSTRACT The article describes a complex approach to the study of ice ridges and stamukhi, including methods: water thermal drilling, total station and sonar surveys, video filming with help of a submersible vehicle, determining the physical and strength properties of ice. The result of this...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1268
... changes in the properties of ice and, in particular, its strength. Information on the dynamics of changes in the basic design parameters of ice is very important for assessing loads and impacts on structures and its safe operation. Such information is especially relevant for the following purposes...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1199
.... social responsibility strength electronic source wind energy sustainability thickness water depth diameter subsea system sustainable development drilling equipment renewable energy support structure operation elistratov calculation wind turbine ice condition arctic condition wind power...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1276
... developed drilling platforms. A description of the methodology for assessing the duration of drilling operations in order to ensure the minimum required drilling time under given ice conditions is given by the example of a Jack-Up platform. drilling equipment strength ice load upstream oil...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1220
... along fast ice in case of cracks presence in the ice cover is summarized in the report. To estimate the degree of ice strength decrease after cracks congelation in the ice basin of the Krylov Research Centre in Saint-Petersburg, a set of laboratory experiments was performed to estimate the ice bending...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2180
... specification. piping simulation strength offshore pipeline collapse pressure piping design midstream oil & gas metals & mining upstream oil & gas girth weld application external pressure equation load capacity pipe thick-walled pipe bending-moment capacity design equation...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1241
... ABSTRACT Deep analysis of past investigations devoted to propeller/ice interaction was fulfilled. It gives an opportunity to highlight the main factors determining the efficiency of ice propellers and to develop the advanced methods of propeller strength calculation. The paper shows that it is...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2225
... soil core materials has appeared. engineering construction technology bearing capacity sand layer upstream oil & gas strength consolidation calculation geotextile cofferdam body new type sand bag requirement deformation characteristic cofferdam application interbedded...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2186
... activator components are environmental friendly and low in cost. At the same time, the slag can be activated under low temperature conditions to make the early strength develop faster. The performance of the activator in the MTC cementing fluid system with a density of 1.35 to 1.55 g/cm 3 was studied. The...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2206
... inclination. According to DNV guidelines (DNV, 2014), the permanent accumulated rotation at the foundation top should not exceed 0.25°. In southeast China Sea, typhoon occurs every year (Li et al., 2013; Letcher, 2017). The strength and stiffness of seabed soil will be degraded under extreme cyclic loadings...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2215
... ABSTRACT Cracks may be created in clays after gas hydrate dissociates. More cracks can be created in clays with a high degree of gas saturation after dissociation and the degree of gas saturation is linked to peak undrained shear strength of the clays through experimental tests. A damage model...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2228
... this study is to clarify the permeation of the ultra-fine particle cement grout, the shape and strength of the cemented sandy mass. The author conducted both column and model ground injection tests to examine the permeability of ultra-fine particle cement. As a result, ultrafine cement grout had high...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2187
... performance and greatly reduced costs. 60 °C/ 24 h compressive strength is greater than 8 MPa, 72 h compressive strength is above 10 MPa; slurry stability and pressure resistance are good; water loss is controllable and thickening time is adjustable to meet construction requirements. It has good prospects for...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-4131
... The ultimate strength of corroded steel plates with pitting corrosion is studied by stochastic FEM in this paper. An automatic 3D Finite Element Method(FEM) computation procedure scripted by MATLAB/ABAQUS/Python is proposed for stochastic solid model of corroded plates. Finishing great amount...

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