... of Penetration Depth of Jack-up Rig Based on Finite Element Method Qishuai Yin1, Qianling Xue1,Qianyu Li1,Jin Yang1,Jiakang Wang1,Baojian Yang2 1 China University of Petroleum in Beijing Changping District, Beijing, China 2 CNOOC China Limited, Tianjin Branch Binhai New District, Tianjin, China ABSTRACT...

... ABSTRACT This work presents a simplified methodology to estimate the force-penetration curve for a large diameter cylindrical panel, corresponding to the structural arrangement in the outer tanks of a semisubmersible floater. The methodology is based on the upper-bound theorem of plastic limit...

... using a dynamic probing (DP) and electrical logging was developed to confirm the improvement effect of a chemical grouting method. In this method, a dynamic probing is conducted using an electrode probe, and electrical logging is conducted while pulling out the penetrated electrode probe. A quantitative...

... the cyclic motion amplitudes effect. It demonstrates that the ultimate penetration increases with the cyclic motions amplitudes. Fig. 12 shows the embedment development with various loading frequencies and can be seen that the frequency has negligible effect on the ultimate penetration of the pipe. Fig.9...

... pool condition with reduced arc length, or buried arc, , (Gondim et al, 2019). Such technologies provide an arc with high current density, reduced spatter and high penetration (Stol, I. et al, 2006). Previous works developed at Labsolda, such as the one by Schaeffer et al. (2022), where they applied...

... construction penetration offshore pipeline sediment deflection sterile area 2 consolidation stage pipeline cable assessment sterile corridor 30-inch lng pipeline construction plan Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5...

.... The authors proposed a new sampling and pull-up test, denoted as a S&PUT for short, that can perform sampling and sounding simultaneously (Tani et al., 2020a). Using a hydraulic jack and a vibro- or a percussion hammer, a test device with a sounding probe for pull-up tests (PUTs) and cone penetration...

... ice sheet andryushin propeller cap ship ice load coefficient penetration thickness ice force icebreaker nozzle Proceedings of the Thirty-first (2021) International Ocean and Polar Engineering Conference www.isope.org Rhodes, Greece, June 20 25, 2021 Copyright © 2021 by the International...

... strength & randolph bearing factor upstream oil & gas penetrometer simple shear test t-bar penetrometer kpa t-bar test mechanism specimen calcareous silt subsea system géotechnique erbrich proceedings randolph centrifuge penetration Field tests suggest that the T...

... ABSTRACT Safe installation of mobile jack-up platforms requires accurate prediction of the vertical load-penetration curves of their large ∼20 m diameter spudcan footings. Difficulties can arise due to a change of soil strength from a soft to a stiff layer. A substantial increase...

... variation law with time after jetting, this paper proposes a calculation model of the conductor jetting depth in ultra-deep water soft stratum drilling. An ultra-deep water well in the South China Sea is given as a typical case. And a reasonable mud penetration depth of the surface conductor is calculated...

... formation immediately above the pipeline. Thus, ice features investigation is the necessary condition of designing, construction and operation of structures offshore the arctic seas. penetration hummock impact artificial intelligence upstream oil & gas finite element soil body burial depth...

... is clearly observed at the upper part of jet body. The spacing between two adjacent effluent clouds has strong relationship with the Strouhal number ( St ). Further analysis shows that, the jets have higher penetration with a larger jet-to-current velocity ratio ( R jc ). The vertical momentum of original...

... penetration problem of jack-up drilling platform. soil layer bearing capacity egg shell foundation platform safety factor subsea system shear strength spud leg diameter punch-through risk experiment pile foundation upstream oil & gas penetration hard soil layer drilling equipment...

..., the spudcans should be penetrated to some depth below the seabed surface under incremental preloading (Endley et al. 1981). However, spudcan installation in layered soils could lead to catastrophic failure called ‘punch through’ (Craig and Chua, 1990). Punch through refers to that the applied load exceeds...

... gravity condition in soft clay and sand-over-clay profiles. The parameters examined included the clearance between the pile and the spudcan edge, seabed layering and pile head fixity. When subject to lateral soil displacement during spudcan penetration, a fixed headed pile experienced negative bending...

... test showed that the GFRP suction pile was stable during penetration. INTRODUCTION Many offshore structures have been constructed for offshore space utilization, offshore wind turbines, and marine resource development in Korea. A suction pile is a circular surface foundation with thin skirts around...

... have overwhelmed the users lately. This paper presents a new interpretation for what is really critical to achieve a high performance of the MIG/MAG process in terms of penetration. The welding power source may be based on the more conventional mode of the process, i.e. in the voltage control mode (CV...

... ABSTRACT Indentation tests were carried out at constant rate of penetration on undisturbed specimens of a sensitive clay of eastern Canada. Tests were performed using 20-mm diameter conical indenters having 60°, 80°, and 97° apical angles. The clay specimens which measured 63 mm in diameter...

... and the footprint center and gave the critical distance. Cassidy et al. (2009) carried out centrifuge experiments considering the stiffness of the loading leg. They discussed the penetration and stress profiles under different footprint geometry. Gan (2009, 2012) investigated the shear strength variation within...