A Review of Insulated Concentric Coiled Tubing Installations for Single Well, Steam Assisted Gravity Drainage

Falk, Kelly; Nzekwu, Ben; Karpuk, Brad; Pelensky, Peter

doi:10.2118/36333-ms

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…The VIT technology consists in the use of two concentric tubes that are welded at their ends, creating an annular space containing a vacuum, which minimizes radial heat transfer [21,22,23,24,25,26,27,28]. However, since the junction (connector) between two tubings is not insulated, heat transfer may be significant at this location [29].…”

Section: Figure 1 Continuous Steam Injection Schematicmentioning

confidence: 99%

A CFD study of steam injection tubing heat losses

Araújo

Romero

2019

Ingeniare. Rev. chil. ing.

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To increase heavy oil production, the petroleum industry uses thermal recovery methods, and the steam injection is one of the most common techniques. Steam generated at the surface reaches the oil reservoir through the injection tubing. Heat transfer between the steam and the injection well surroundings the tubing is analyzed in this work, the challenge in this process to minimize it. It is presented the three-dimensional simulation of the multiphase turbulent liquid-vapor flow along with a 100 m wellbore domain composed by injection tubing, annular space, casing, and rock formation. With the software ANSYS CFX® 15.0, the response of a low thermal conductivity tubing and formation temperature to steam injection at 80% of quality, injected at two different flow rates, is evaluated. The insulated material tubing (IMT) has the best performance compared to the conventional configuration, for both 1.2 kg/s and 3.3 kg/s flow rates. Additionally, the higher flow rate shows higher steam quality results when using a conventional tubing while maintaining 0.13% more quality at the tubing output.

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Section: Figure 1 Continuous Steam Injection Schematicmentioning

confidence: 99%

A CFD study of steam injection tubing heat losses

Araújo

Romero

2019

Ingeniare. Rev. chil. ing.

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Production Optimization through Intelligent Wells in Steam Trapping in SAGD Operations

Temizel¹,

Canbaz

Palabiyik

et al. 2019

SPE Western Regional Meeting

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Steam-assisted Gravity Drainage (SAGD) is one of the major thermal recovery methods for heavy oil. Optimization of SAGD is a delicate process that needs to be planned and operated in a detailed manner. Steam trapping is one of the methods that may help optimize production in SAGD by keeping the steam chamber well drained, where liquid does not accumulate on top of the producer and steam is not produced. This is a challenging process even with the advances in well completions with smart or intelligent wells. In this study, the use of smart valves (ICVs) are investigated and their use in optimization of SAGD through steam trapping is outlined. A comprehensive review on steam trapping, in terms of theory and practice, has been provided. A smart well configuration with intelligent valves are built in a representative reservoir simulation model where the full-physics commercial reservoir simulator is coupled with an optimization/sensitivity software to optimize the processes and investigate the significance of the key control/decision and uncertainty variables. Different approaches are used in steam trap control; static location, dynamic scanning in time and location, and dynamic scanning in time and specified locations. The results are outlined along with practical aspects of the whole process and operation. The results are outlined in a comparative way to illustrate the benefits of smart valves and the key points in utilizing them, including economic aspects of their use for additional recovery and the related costs. Results indicate that intelligent wells may prove useful in optimizing steam trapping in SAGD operations depending on the size of the prize. There are several studies on steam trapping. However, there aren't many studies that integrate steam trap control with smart wells. This study investigates the theoretical and practical aspects of steam trapping using intelligent wells, along with outlining the key attributes, decision and uncertainty variables in a comparative way in terms of the steam trap control strategies and economics.

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Recommended Practices for Slim-Hole Steam Injectors

Castrup¹

2001

SPE Western Regional Meeting

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A Review of Insulated Concentric Coiled Tubing Installations for Single Well, Steam Assisted Gravity Drainage

Cited by 5 publications

References 9 publications

A CFD study of steam injection tubing heat losses

A CFD study of steam injection tubing heat losses

Production Optimization through Intelligent Wells in Steam Trapping in SAGD Operations

Recommended Practices for Slim-Hole Steam Injectors

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