Experimental investigations of multilayer insulation

Bapat, S.L.; Narayankhedkar, K.G.; Lukose, T.P.

doi:10.1016/0011-2275(90)90235-5

Cited by 46 publications

(15 citation statements)

References 6 publications

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“…For example, Bapat et al show this trend for similar materials and conditions reporting a k-value of 0.0827 mW/m-K for 60 layers at a density of 2.810 layers per mm [6]. The Kaganer line with a k-value of 0.05 mW/m-K represents the best possible thermal performance under ideal laboratory conditions.…”

Section: And Discussionmentioning

confidence: 93%

Thermal insulation performance of flexible piping for use in HTS power cables

Fesmire¹,

Demko²

2002

AIP Conference Proceedings

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Section: And Discussionmentioning

confidence: 93%

Thermal insulation performance of flexible piping for use in HTS power cables

Fesmire¹,

Demko²

2002

AIP Conference Proceedings

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“…[10][11][12][13][14][15][16][17][18][19][20]. The same characteristics that allow TF insulation to perform in those industries can also be applied to the petroleum industry.…”

Section: Thin-film Insulationmentioning

confidence: 98%

Flow Assurance Begins with Downhole Insulation

Lively¹

2002

All Days

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Thin-Film (TF) insulation combined with an insulating packer fluid is an effective and proven method for insulating downhole production tubing and casing in order to preserve reservoir heat and to enhance startup conditions. Modeling indicates that this system can increase FWHT by as much as 25°F-30°F as flow rates decline.Combining these technologies enables heat losses at couplings, valves, gauges and other components without insulation to be controlled. An aqueous based packer fluid inhibits the formation of convection currents that commonly occur in standard brine completion fluids, resulting in an overall heat transfer coefficient that is more than 10 times lower than standard completion fluids. These technologies are cost effective, readily available and provide numerous advantages over traditional completion systems.Until the last few years the only option for downhole insulation has been vacuum insulated tubing (VIT); however many applications cannot support the economics of VIT nor do they require the low thermal conductivity that VIT provides.Any one of these technologies can be used alone or in combination with another depending on the application. In some applications all three may be required to accomplish the objective.

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“…1,2,3,4,5,6,7,8,9,10 Thin-film, multi-layered insulation relies on the proven principle that thermal resistances are additive. When the thermal resistance from each layer of the material is added to the thermal resistance at the interface between layers of material and to the contact resistance of the fluid to the coating, then the subsequent total thermal resistance is greater than a single thick layer.…”

Section: Selection Of Insulation Materialsmentioning

confidence: 99%

A New Insulation Technology: Prediction vs. Results From the First Field Installation

Horn

Lively²

2001

All Days

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Insulation is a critical aspect of offshore production systems, particularly in deeper waters where low ambient temperatures must be addressed and accommodated. The problems are normally associated with the effects on the flow stream when heat is lost to the surrounding environment. However, there are some situations where it is not the effects on the production stream from heat loss that is the problem, but the effects on the surrounding environment that creates the problem. This paper primarily focuses on the situation where reservoir heat in a production stream creates a technical problem in the area surrounding a well bore. The paper then presents a new insulation technology that was evaluated as part of the solution and discusses the successful outcome. The results are then used to address the potential utilization of this new technology for other flow assurance related heat control applications where the retention of heat in the production stream is desired, such as the need for insulating subsea flow lines, jumpers, manifolds, xmas trees, production risers and other associated production equipment.

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Experimental investigations of multilayer insulation

Cited by 46 publications

References 6 publications

Thermal insulation performance of flexible piping for use in HTS power cables

Thermal insulation performance of flexible piping for use in HTS power cables

Flow Assurance Begins with Downhole Insulation

A New Insulation Technology: Prediction vs. Results From the First Field Installation

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