... and a low rotational speed are favorable. Electrical propulsion systems based on axial flux motors can produce this power profile without transmission. As a contribution to achieving this goal, a cryogenic hydrogen cooling system will be developed, which cools an axial flux motor directly in the conductors...

... ABSTRACT Multiple wellheads for offshore operations converge on a platform. Conductor is in a dense layout and the spacing is gradually reduced. The soil disturbance stress fields of pile driving are superimposed on each other, resulting in pile group effect, which has a vital effect...

... coating cable trace cable mattress insulation upstream oil & gas piping design heat trace cable conductor deh electrical heating conductor cross-section pipe heating capability trace heating power consumption Proceedings of the Thirty-third (2023) International Ocean and Polar...

... of lower flexible joint and wall thickness of conductor on the dynamic characteristics on subsea wellhead have been evaluated and discussed. The analysis results show that the wave period and wave height are the most important factors affecting the dynamic characteristics on subsea wellhead. The rotational...

... ABSTRACT During installation of conductors, there are often obstacles in the entry. The newly developed quick puncture tube shoes can solve this problem. The results presented in this paper show that the penetration speed of the shoe and the conductor can be increased quickly for different...

...). Compared with penetrating into shallow soil for well construction, the suction underwater pile wellhead technology has smaller requirements of shallow layer soft soil and enables marine conductors to be mass installed into the sea. The strong bearing capacity of the suction underwater pile improves...

... ABSTRACT Large lateral displacement and bending moment of marine drilling conductor are produced under loads such as wave, current, and ice, which seriously threaten the safety of offshore operations and wellhead stability. Due to soil disturbance, the bearing capacity of the drilling...

... state simulation dynamic simulation conductor Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5 10, 2022 Copyright © 2022 by the International Society of Offshore and Polar Engineers (ISOPE) ISBN 978-1-880653-81-4; ISSN 1098-6189...

... engineering; which may induce redundant design of drilling riser emergency evacuation response plan and consequently increase the offshore oil and gas drilling costs. hydraulic fracturing coupling model hysteresis effect drilling equipment conductor dynamic coupling model subsea system deepwater...

... of cementing the surface casing because of the significant downward wellhead load and an improperly adjusted hook load. During production, wellhead growth may occur if the upward load is so large that the conductor moves with the wellhead as a whole. Finally, mitigation methods are proposed and summarized...

... rotation angle finite element model assessment high pressure wellhead deflection low pressure wellhead equivalent model conductor pressure wellhead upstream oil & gas semi-decoupled model wellhead datum Comparative investigation of dynamic analysis models for subsea wellhead in deepwater...

... ABSTRACT The stability of the drilling surface conductor in deep water and ultradeep water is the main risk point in the process of deep water jetting and the key to the success of whole deep water drilling operation. As the ultra-deep water riser is long and heavy, the riser tensioners can...

...) is a wet design XLPE insulated HV cable. The cable contains two conductors, one "supply" and one "return" conductor, to complete one electrical circuit of the DEH system. Some cables contain four conductors to feed two DEH systems. On a specific project the Riser Cable was installed on the seabed for one...

... ABSTRACT The surface conductor is a key equipment in deep-water drilling. They are connected into a large-diameter pipe string. The friction between the conductor and the seabed soil should be relied on to support the subsea wellhead. The new type of surface conductor has been done to shorten...

... of the survivability of the riser and conductor system to these system physical parameters. INTRODUCTION The frequently typhoon in South China Sea that battered the offshore facilities (Xu, 2013) have prompted many operators and drilling contractors to rethink the way their drilling risers are designed...

... drilling conductor steel pile offshore drilling conductor drilling equipment cement ring steel pipe conductor wellbore integrity adhesion strength lateral friction resistance bearing capacity conductor installation depth design calculation model upstream oil & gas wellbore...

... On the stability of subsea wellhead in deep-water drilling: Based on the bearing capacity of conductor Yanbin Wang Deli Gao Jun Fang Jing Zeng Chenyu Meng MOE Key Laboratory of Petroleum Engineering, State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum...

... into two parts: drilling pipe and conductor. Fig.2: Load of riserless drilling system Drilling Pipe Analysis The force of drilling pipe should be analyzed in two parts: the drilling pipe exposed in the sea and the pipe in wellbore. The drilling pipe in the sea is subjected to the tension force...

...Analysis of Shallow Conductor Dynamics and Subsea Wellhead Stability Considering Sand Liquefaction Deqiang Tian1, Honghai Fan1, Chaowei Li1 ,2, Zixiang Wen1, Yuhan Liu1,Wenlong Jiang1 1College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing, China 2Key Lab of Deepwater...

... displacement quasi-static analysis upstream oil & gas hotspot stress wellhead system conductor drilling riser motion analysis fatigue analysis riser calculation global model wellhead datum load-to-stress curve drilling equipment weld Fatigue Analysis of Non-rigid Locked Wellhead Vivek...