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Actuator

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Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31240-MS
... operated and thus not suited for fully remote operations. In 2017, Equinor, Baker Hughes and TECHNI formed a Joint Industry Project (JIP) to develop a new electric actuator control system. The actuator system is designed for fail-safe, critical operations offshore and is subject to stringent safety design...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31083-MS
...Abstract Abstract This paper presents the development and qualification of a novel Subsea Electric Actuator, especially designed for rotary small-bore valves. One of the main challenges was to design an electric actuator which is as compact as the existing hydraulic actuators, but able...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3116
...; ISSN 1098-6189 A Coupled RANS-VOF and Actuator Disk Model for Floating Offshore Wind Turbines Edward J. Ransley, Scott A. Brown, Martyn R. Hann, Deborah M. Greaves School of Engineering, Computing and Mathematics, University of Plymouth Plymouth, U.K. ABSTRACT nonlinear phenomena associated...
Proceedings Papers

Paper presented at the SPE Asia Pacific Oil & Gas Conference and Exhibition, November 17–19, 2020
Paper Number: SPE-202310-MS
... Abstract In the drive for remote operations, reducing operator costs and reducing emissions and CO2, digitalization of sensors and control systems is imperative. To date, valves on wellheads and trees have predominantly been controlled by hydraulic actuators that are not ideally suited...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201276-MS
... Abstract PACT (Pressure control ACTuator) is a newly developed, all-electric wellhead- and production tree valve actuator for enhanced well control and fail-safe handling of emergency situations. The actuator was developed under a Joint Industry Project (JIP) by Equinor, Baker Hughes and TECHNI...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-297
... source term coefficient upstream turbine drag coefficient turbine actuator line method downstream turbine social responsibility reservoir simulation ocean energy rotor tidal turbine sustainable development geometry method geometry simulation thrust coefficient experimental result...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-212
... ABSTRACT The steering gear is the actuator of submarine course control system. For valve controlled hydraulic steering gear servo system in this paper, the composition of the hydraulic steering servo valve control system is introduced and the mathematical model is built through simulation...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-036
... ABSTRACT Wake interaction normally occurs in all wind farms and impacts significantly the flow field and performance of downstream wind turbines. The present work aims to study the wind turbine wake interaction phenomenon through the CFD method using LES and actuator line model. The solver...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-066
... ABSTRACT Yawing control has emerged as a promising strategy to improve the overall performance of wind farms by deflecting the upstream turbine wakes. To better understanding wake aerodynamics of a yawed wind turbine, an advanced actuator line method---actuator curve embedding (ACE) method...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-068
... ABSTRACT The actuator line method (ALM) introduces an actuator-line to represent a wind turbine by adding a body force term in the momentum equation. As ALM simplifies the process of mesh refinement and moving mesh, it can get much higher efficiency for wind turbine wake simulation...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28828-MS
... Abstract Although subsea production is already a mature technology, a high engineering effort is currently needed to "industrialize" the applied systems for cost optimization. The drive system applied for the actuation of subsea valves in trees and manifolds reflects exactly this challenge: how...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-021
... using actuator line model and CFD method, and the RANS equation with k-ω SST turbulence model was solved in the simulations conducted in the OpenFOAM. From the study, it is concluded that the inter-turbine spacing has significant effects on the aerodynamic power and wake characteristics. The aerodynamic...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-118
... Abstract A modified locally optimal and globally inverse optimal controller for dynamic positioning (DP) is constructed by using backstepping methodology and optimal control method. The motivation is the existence of undesired signal sent to the actuators which can result in bad behavior in DP...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-444
... shen flow field coefficient renewable energy tip correction factor aerodynamic data tip speed ratio investigation blade loading rotor traverse nacelle refinement lift coefficient mexico rotor ocean energy representation actuator line method computation Validation...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-278
... is being on the realistic depiction of the far wake rather than on the actual flow dynamics at the rotor blades. For the purpose of assessing and analyzing the turbine's performance in a tenable computing time, an Actuator Disc approach has been implemented into a CFD simulation model in ANSYS CFX...
Proceedings Papers

Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-104
... ABSTRACT Hydrogen absorbing alloys have been studied to examine their effectiveness for storage of hydrogen. The Metal Hydride actuator (MH actuator) is being developed as a method for directly obtaining a mechanical force using hydrogen pressure generated by a temperature difference applied...
Proceedings Papers

Paper presented at the The Tenth International Offshore and Polar Engineering Conference, May 28–June 2, 2000
Paper Number: ISOPE-I-00-020
... ABSTRACT Air Power & Hydraulics perceived a need for an improved pan and tilt actuator mechanism which, in conjunction with a camera, could be fitted to Remotely Operated Vehicles (ROVs) and used to assess the condition of underwater installations. The company decided to develop...
Journal Articles
J Pet Technol 50 (08): 60–61.
Paper Number: SPE-0898-0060-JPT
Published: 01 August 1998
...Dennis Denney This article is a synopsis of paper OTC 8794, "Shared-Actuator Manifold - An Innovative Conception To Minimize Costs," by C.C. Moreira, L.P. Ribeiro, M.B. Cerqueira, A. Garcia, and L.G. Cosentino, Petrobras, originally presented at the 1998 Offshore Technology Conference, Houston, 4-7...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 1998
Paper Number: OTC-8794-MS
... System and the diverless intervention method. The analysis of the conception of existent manifolds indicated that some simplification could be made without loss of reliability or functionality. This paper describes the development of the MAC Manifold, a monogram in Portuguese of Shared Actuator Manifold...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 1996
Paper Number: OTC-8240-MS
... Abstract This paper reviews the continuing development of gate valve and actuator technology for subsea completions extending into ultra deep water. The basic technical challenges inherent to subsea valve actuators are reviewed, along with the various factors which affect the design...

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