Successful Field Application in Continuous DTS Monitoring Under Harsh Environment of SAGD Wells Using Improved Optical Fiber Technology

Kaura, Jiten; Sierra, Jose R.

doi:10.2118/117206-ms

Cited by 9 publications

(4 citation statements)

References 8 publications

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“…Birrell [3] proposed to interpret temperature data obtained from thermocouple installed in the vertical observation well to predict steam chamber growth rate in a pilot project. The other way to conduct continuous down-hole temperature measurement is through fiber optic [4]. The fiber optic cable is installed or run along the wellbore so that the temperature can be continuously monitored at all points.…”

Section: Introductionmentioning

confidence: 99%

A correlation of steam chamber size and temperature falloff in the early-period of the SAGD Process

Zhu

Zeng

Huang

2015

Fuel

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Section: Introductionmentioning

confidence: 99%

A correlation of steam chamber size and temperature falloff in the early-period of the SAGD Process

Zhu

Zeng

Huang

2015

Fuel

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“…Carbon coatings provide longterm relief from the onset of the effects of hydrogen by slowing its diffusion rate into fiber for temperatures less than approximately 150°C. 29,30,31,32 Throughout the past decade, good progress has been made with respect to pure silica core fiber and in new glass formulations that can help minimize hydrogen effects over limited wavelengths ranges 42,43 . Interestingly, if considering the combined effects of both Rayleigh backscatter and hydrogen-induced losses, it appears that a global minimum wavelength operating range exists near 1064 nm.…”

Section: Hydrogen-induced Effectsmentioning

confidence: 99%

Downhole fiber optic sensing: the oilfield service provider's perspective: from the cradle to the grave

Skinner

Maida

2014

SPIE Proceedings

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For almost three decades, interest has continued to increase with respect to the application of fiber-optic sensing techniques for the upstream oil and gas industry. This paper reviews optical sensing technologies that have been and are being adopted downhole, as well as their drivers. A brief description of the life of a well, from the cradle to the grave, and the roles fiber-optic sensing can play in optimizing production, safety, and protection of the environment are also presented. The performance expectations (accuracy, resolution, stability, and operational lifetime) that oil companies and oil service companies have for fiber-optic sensing systems is described. Additionally, the environmental conditions (high hydrostatic pressures, high temperatures, shock, vibration, crush, and chemical exposure) that these systems must tolerate to provide reliable and economically attractive oilfield monitoring solutions are described.

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“…Historical technologies (Kaura and Sierra, 2008) have been presented that allow control of injection into a steam cavern. However, these systems each have shortcomings.…”

Section: Injection Into Specific Zonesmentioning

confidence: 99%

SAGD Field Trial for a New Intelligent-Well Completions Strategy to Increase Thermal EOR Recoveries

Shaw

Bedry

2012

All Days

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Well segmentation and instrumentation have been used to improve steam injection and production conformance in a completions strategy for a thermal-enhanced oil recovery (EOR) project by using intelligent well technology and interval control valves (ICVs). The initial field trial is ongoing in the injector of a Northern Alberta steam-assisted gravity drainage (SAGD) well pair. The development of the completion technology suitable for thermal conditions, initial field trial results and the plans for further development are described in this paper. The application modeling shows that, depending on the level of heterogeneity present in the reservoir, a 45% reduction in the steam-oil ratio and an almost 70% increase in recovery can be achieved in a SAGD process when both improved injection conformance and producer differential steam-trap control can be applied in a segmented horizontal well pair. A cost-effective, intelligent-well completion solution to achieve this segmentation and control has the potential to add substantial value to field developments through improved steam conformance. This will result in increased energy efficiency and oil recovery. The method under development is also applicable to a wide range of other thermal EOR processes such as cyclic steam stimulation (CSS), steam drive, and variations, including, for example, those involving solvent additives.The initial field deployment in the injector well was initiated to prove the technology, to demonstrate the feasibility of modifying the steam distribution, and to obtain best practices for future developments. A successful installation and commissioning of the intelligent completion has validated the technology. Lessons learned are highlighted. Early injection test results and data show a significant increase in the understanding of the injection and production behavior in the well pair. A test program to optimize the distribution of the steam injection in the well is underway, and the results are discussed. The intelligent completion technology under trial and proposed further developments should enable more extensive use of downhole measurement and control in thermal EOR projects than has been possible to date.

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Successful Field Application in Continuous DTS Monitoring Under Harsh Environment of SAGD Wells Using Improved Optical Fiber Technology

Cited by 9 publications

References 8 publications

A correlation of steam chamber size and temperature falloff in the early-period of the SAGD Process

A correlation of steam chamber size and temperature falloff in the early-period of the SAGD Process

Downhole fiber optic sensing: the oilfield service provider's perspective: from the cradle to the grave

SAGD Field Trial for a New Intelligent-Well Completions Strategy to Increase Thermal EOR Recoveries

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