Results 71 to 80 of about 115 (92)
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Strength design method for tubing hanger of subsea christmas tree against big temperature difference
China Ocean Engineering, 2014The tubing hanger is an important component of the subsea Christmas tree, experiencing big temperature difference which will lead to very high thermal stresses. On the basis of API 17D/ISO 13628-4 and ASME VIII-1, and by comprehensively considering the erosion of oil and the gravity load of the tubing, a calculation model is established by regarding ...
Xiao-lan Luo +5 more
exaly +2 more sources
Safety in subsea petroleum production systems: subsea Christmas Tree case study
Technical Transactions. Mechanics = Czasopismo Techniczne. Mechanika, 2016The paper presents an analysis of valves used for closing and opening production tubing, located on the production line. The main safety valves analysed in this work are located in the Christmas Tree and in the Downhole Safety Valve. The analysis was conducted using FMEA; it found that for each basic Christmas Tree’s gate valve, the most dangerous ...
Adamowicz, Katarzyna +2 more
openaire +1 more source
2012 Oceans, 2012
To optimize the umbilical line design of the Offshore Subsea Christmas Tree Control System (OSCTCS) and reduce its cost, a mathematical lumped parameter model of the umbilical is developed. Taking advantage of the intermittent flow-rate need of the OSCTCS and the hydraulic capacitance compensation effect of the long umbilical lines between the ...
Jiawang Chen
exaly +2 more sources
To optimize the umbilical line design of the Offshore Subsea Christmas Tree Control System (OSCTCS) and reduce its cost, a mathematical lumped parameter model of the umbilical is developed. Taking advantage of the intermittent flow-rate need of the OSCTCS and the hydraulic capacitance compensation effect of the long umbilical lines between the ...
Jiawang Chen
exaly +2 more sources
Smart Actuator - Retrofittable Full Function All Electric Subsea Christmas Tree Actuator
Offshore Technology ConferenceSummary The Smart Actuator system, jointly developed by TotalEnergies EP Angola and Advanced Mechatronics GmbH, delivers a breakthrough solution to costly and safety-critical challenges in deepwater subsea production: the failure of hydraulic valve actuation systems on Christmas Trees.
S. Morris +3 more
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Numerical analysis of cathodic protection of a Q355ND frame in a shallow water subsea Christmas tree
Materialpruefung/Materials TestingAbstract This study develops a 3D model of a Christmas tree using cathodic protection technology and conducts numerical simulations on the Q355ND framework of a shallow Christmas tree. The boundary element method is employed for modeling, examining the distribution of protection potentials under varying corrosion layer breakage rates,
Shaodong Ju +6 more
exaly +2 more sources
Analysis of safety and impact probability of subsea Christmas tree impacted by falling objects
Marine Structures, 2023Nan Pang +6 more
openaire +1 more source
Third International Conference on Advanced Materials and Equipment Manufacturing (AMEM 2024)
Xing Jin, Yingjie Su, Hao Fan, Yongli Hu
exaly +2 more sources
Xing Jin, Yingjie Su, Hao Fan, Yongli Hu
exaly +2 more sources