scholarly journals Application of Numerical Modelling and Genetic Programming in Hydrocarbon Seepage Prediction and Control for Crude Oil Storage Unlined Rock Caverns

Geofluids ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Ebrahim Ghotbi Ravandi ◽  
Reza Rahmannejad ◽  
Saeed Karimi-Nasab ◽  
Amir Sarrafi
Keyword(s):  
Genetic Programming ◽  
Numerical Modelling ◽  
Crude Oil ◽  
Control Method ◽  
Effective Parameters ◽  
Two Phase ◽  
Seepage Control ◽  
Oil Storage ◽  
Prediction And Control ◽  
And Control

Seepage control is a prerequisite for hydrocarbon storage in unlined rock caverns (URCs) where the seepage of stored products to the surrounding host rock and groundwater can cause serious environmental and financial problems. Practically seepage control is performed by permeability and hydrodynamic control methods. This paper employs numerical modelling and genetic programming (GP) for the purpose of seepage prediction and control method determination for the crude oil storage URCs based on the effective parameters including hydrogeologic characteristic of the rock and physicochemical properties of the hydrocarbons. Several levels for each parameter were considered and all the possible scenarios were modelled numerically for the two-phase mixture model formulation. The corresponding seepage values were evaluated to be used as genetic programming data base to generate representative equations for the hydrocarbon seepage value. The coefficients of determination (R2) and relative percent errors of the proposed equations show their ability in the seepage prediction and permeability or hydrodynamic control method determination and design. The results can be used for crude oil storage URCs worldwide.

scholarly journals Water Curtain System Pre-design for Crude Oil Storage URCs: A Numerical Modeling and Genetic Programming Approach

2017 ◽  
Vol 36 (2) ◽  
pp. 813-826 ◽  
Author(s):  
Ebrahim Ghotbi Ravandi ◽  
Reza Rahmannejad ◽  
Saeed Karimi-Nasab ◽  
Amir Sarrafi ◽  
Amir Raoof
Keyword(s):  
Numerical Modeling ◽  
Genetic Programming ◽  
Crude Oil ◽  
Programming Approach ◽  
Water Curtain ◽  
Oil Storage

scholarly journals A Cascaded Topology and Control Method for Two-Phase Receivers of Dynamic Wireless Power Transfer Systems

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 47445-47455
Author(s):  
Jinhai Jiang ◽  
Zhonggang Li ◽  
Kai Song ◽  
Beibei Song ◽  
Shuai Dong ◽  
...  
Keyword(s):  
Control Method ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Two Phase ◽  
And Control

Design and Evaluation of Electromagnetic Wobble Motor

2012 ◽  
Vol 24 (3) ◽  
pp. 480-486 ◽  
Author(s):  
Masaki Miyake ◽  
◽  
Koichi Suzumori ◽  
Kazuo Uzuka ◽  
Keyword(s):  
Control Method ◽  
Basic Structure ◽  
The Other ◽  
Motor Drive ◽  
Reduction Mechanism ◽  
Two Phase ◽  
Basic Model ◽  
Electric Equipment ◽  
And Control

The purpose of this work is to develop a thin, electromagnetic wobble motor with a large amount of torque, a motor thinner than conventional ones and able to be applied to portable electric equipment. We have developed a basic model of the motor 30 mm in diameter and 5 mm in thickness. In this paper, the basic structure and control method are first presented. Next, the design of the electromagnets and the three types of gear pairs, which have different pressure angles for the reduction mechanism, are presented. Finally, the motor drive experiments are performed using two types of drive: one is a two-phase drive, and the other is a four-phase drive. Three types of gear pairs are also shown. The motor works successfully, and its great potential to be mounted in thin, portable equipments is confirmed.

scholarly journals Characteristics and oil sorption effectiveness of areca nut husk

2021 ◽  
Vol 4 (2) ◽  
pp. 167
Author(s):  
Nik Khairul Irfan Nik Ab Lah ◽  
Jacquinn Alizcia James Ketek ◽  
Tengku Amran Tengku Mohd
Keyword(s):  
Crude Oil ◽  
Oil Spill ◽  
Control Method ◽  
Heavy Crude Oil ◽  
Areca Nut ◽  
Modern Material ◽  
Oil Sorption ◽  
Heavy Crude ◽  
And Control

Oil spill accident occur due to human carelessness and error during oil transportation, storage, and production of the hydrocarbon. Effect of oil spill can be either short or long term. It is not only affecting the environment but also marine life, economy, and social. Thus, effective recovery and control method must be carefully implemented to minimise the effect. There are various studies and technologies to mitigate the oil spill incident but mostly the techniques are very expensive, difficult and use of non-environmental friendly material. Hence, this study is conducted to study areca nut husk as a potential oil adsorbent for oil spill recovery. The characteristics of areca nut husk include morphological structures and chemical composition. The areca nut husk oil sorption effectiveness and capacity also been investigated. Areca nut husk were tested for both heavy crude oil and diesel adsorption. The result shows that the efficiency of oil sorption of areca nut husk toward heavy crude oil is 14.8% and it can be an alternative sorbent material to the current modern material. Meanwhile, the areca nut husk is not recommended to be used for diesel absorption activity for its low effectiveness (i.e., 2.04%) showed in this study. 

scholarly journals Modeling, Prediction, and Control of Heating Temperature for Tube Billet

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Yachun Mao ◽  
Dong Xiao ◽  
Dapeng Niu
Keyword(s):  
Control Method ◽  
Heating Temperature ◽  
Nonlinear Models ◽  
Time Lag ◽  
Industrial Applications ◽  
Billet Temperature ◽  
Tube Billet ◽  
Prediction And Control ◽  
Coupling Characteristics ◽  
And Control

Annular furnaces have multivariate, nonlinear, large time lag, and cross coupling characteristics. The prediction and control of the exit temperature of a tube billet are important but difficult. We establish a prediction model for the final temperature of a tube billet through OS-ELM-DRPLS method. We address the complex production characteristics, integrate the advantages of PLS and ELM algorithms in establishing linear and nonlinear models, and consider model update and data lag. Based on the proposed model, we design a prediction control algorithm for tube billet temperature. The algorithm is validated using the practical production data of Baosteel Co., Ltd. Results show that the model achieves the precision required in industrial applications. The temperature of the tube billet can be controlled within the required temperature range through compensation control method.

scholarly journals Tank Wall Thermal Stress Analysis and Risk Prevention and Control of Crude Oil Storage Tank

2021 ◽  
Vol 39 (2) ◽  
pp. 541-549
Author(s):  
Xuejian Zhao
Keyword(s):  
Heat Transfer ◽  
Thermal Stress ◽  
Crude Oil ◽  
Storage Tank ◽  
Prevention And Control ◽  
Risk Prevention ◽  
Tank Wall ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
And Control

If the crude oil in storage tank is directly heated without considering its temperature distribution, several problems will occur, namely, the thermal expansion of crude oil, and the uneven thickness of the condensate layer, bringing difficulty to the safe management of crude oil storage and transport. However, few scholars have analyzed the temperature field distribution of crude oil storage tank (COST) under heating, or the internal force of COST under static force. Thus, this paper probes into the thermal stress of tank wall, and the risk prevention and control of COST. Firstly, the heat transfer properties of COST were analyzed, an energy balance model was constructed for COST, and several variables were selected to evaluate the heat transfer effect of the tank under different heating modes, including thermal design power, temperature rise rate, and heat energy utilization rate. Next, the cross-section of COST wall was selected for thermal stress analysis. Based on the extremes of circumferential and vertical thermal stresses, the weak parts of COST susceptible to risks like leakage were determined, and several measures and suggestions were presented for reducing the risks of crude oil storage and transport.

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