Medium Voltage Electric Heating Technology for Downhole Heating Applications and Offshore Platforms

Molnar, C. J.; Riley, Matt; Trussler, R..

doi:10.2118/177530-ms

Cited by 4 publications

(3 citation statements)

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“…The chemical method reduces the critical temperature of hydrate formation by adding chemicals to the oil (Nysveen et al, 2007). Pipeline insulation is usually suitable for conditions where the wellhead temperature is high.…”

Section: Introductionmentioning

confidence: 99%

“…Data show a linear relationship between maximum safe power and pipe diameter and an exponential relationship between applicable heating time and pipe diameter (Yao et al, 2019). The development and application of medium voltage technology can effectively reduce power consumption and energy loss, with benefits in terms of installation cost, maintenance, and operation (Molnar et al, 2015;Molnar and Riley, 2016). Noncontact heating technology includes circulating hydrothermal heating, electrical heat tracing, and electromagnetic induction heating (Ansart et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Thermal system for a new flexible composite tank

Liu

Li²,

Zhu³

2022

Front. Mater.

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A flexible thermal insulation system is proposed in this study, which considers the application and promotion of flexible composite materials in the field of marine engineering. This system is designed to provide a cost-effective and convenient thermal insulation solution for avoiding impurity precipitation and formation of wax plugs caused by extremely low temperature during mining, transportation, and storage of oil. The thermal insulation system includes two main parts: the insulation layer and the heating source. In accordance with the laws of thermodynamics and the primary characteristics of the flexible structure, two different insulation systems were designed and model tests were performed to compare performance in heating efficiency, thermal insulation, and temperature field distribution under identical environmental conditions. Compared with the plan 1 thermal insulation system, the plan 2 system has lower requirements for heating power, more uniform temperature field distribution inside the flexible structure, and a difference of only 7.18°C between the highest and lowest temperatures.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal system for a new flexible composite tank

Liu

Li²,

Zhu³

2022

Front. Mater.

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“…Internal disruptions can occur due to connection errors between underground cables, corona, cubicle termination faults, underground cable faults, cubicle faults, transformer faults, and CT faults [4]. However, one of the problems that often occurs in medium voltage cubicles is corona [5]. Corona is a phenomenon that occurs when the air around a conductor or conductor is ionized.…”

Section: Introductionmentioning

confidence: 99%

Desain and Build a Medium Voltage Cubicel Temperature and Humidity Optimization Tool to Minimize the Occurrence of Corona Disease with the PLC-Based Fuzzy Method

Sheila

Rochamwati

Riyadi

et al. 2022

Indones.J.electronic.electromed.med.inf

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Cubicle is an electrical device that functions as a breaker, protector, connector, controller, and divider of the power system electricity from a power source and reduce sparks when connecting. One of the problems that occur in medium voltage cubicles is the presence of corona. Corona phenomena at cubicle terminations can trigger disturbances such as a decrease in insulation quality, power loss and a significant increase in harmonic distortion. Based on previous research, the solution to minimize the occurrence of corona is to optimize the temperature and humidity of the cubicle. Many of the previous studies examined the control of cubicle temperature and humidity using fans and heaters, but the temperature and humidity had not yet reached a stable and optimal point. In this study, raised a problem regarding the optimization of temperature and humidity in cubicles using the fuzzy method to stabilize the performance of medium voltage cells. In this study, it was found that the fuzzy method in this prototype was able to stabilize the panel humidity at 55% RH and stabilize the panel room temperature at 31.5 o C. Thus, it is hoped that a stable and optimal temperature and humidity can minimize the occurrence of corona. The use of HMI/SCADA based applications can facilitate the ability of the user (operator) to monitor several available parameters and manually control the operation of the panel (on/off).

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Finite Element Modeling of Reservoir Heating By An Electrical Cable

Medizade

Summers²

2017

SPE Western Regional Meeting

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Heat, mostly in terms of steam latent heat of vaporization, has been injected into heavy or extra heavy reservoirs worldwide to assist producing the in-situ oils. More recently, heat has been introduced directly into the reservoir by means of placing an electrical cable at the middle of the well in front of the target interval. Design of these electrical cables which supply a specific amount of heat energy per cable length, W/m, when placed in front of the target zone, have been evolving from manufacturing point of view to benefit oil operations worldwide in many ways. The purpose of this study is to investigate the heat transfer effects from the electric cable into stagnant gases of the wellbore media, casing, and reservoir porous media which are surrounding the electric cable. Two types of wells, vertical and horizontal have been studied. The objective is to calculate heat requirement to establish desired temperature distribution beyond the sandface. The mathematical model used to study the heat transfer effects were built by a finite element model software package. In case of cased hole, the heat transfer from the cable propagates through stagnant gases and enters the casing before entering the porous media. In case of open -hole completion, the heat from the cable is transferred to stagnant gases in the wellbore before entering the porous media. Effects of different heating amounts in W/m on the sand-face temperature and deep into the porous media have been investigated for vertical and horizontal well configurations at different energy input conditions. Finite element model results were compared with other similar studies. Results of the finite element modeling show that for all cases including vertical and horizontal wells, the sand-face quickly heats up. As time goes on, a distance into the porous media is also heated up which in return assists oil recovery from a larger vicinity from the well. Heating via electric cables can be beneficial in wellbore cleaning from paraffin, wax and hydrate build ups thus initiating oil recovery from near wellbore area. Total reservoir heating can provide In-situ upgrading of the heavy and extra heavy oils.

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Medium Voltage Electric Heating Technology for Downhole Heating Applications and Offshore Platforms

Cited by 4 publications

References 0 publications

Thermal system for a new flexible composite tank

Thermal system for a new flexible composite tank

Desain and Build a Medium Voltage Cubicel Temperature and Humidity Optimization Tool to Minimize the Occurrence of Corona Disease with the PLC-Based Fuzzy Method

Finite Element Modeling of Reservoir Heating By An Electrical Cable

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