Gas Supply Alternatives And Corrosion Considerations In Underbalanced Drilling Operations

Fried, S.; Yurkiw, F.J.; Berenchea, P.; Girgis, Magdy

doi:10.2118/96-76

Cited by 5 publications

(3 citation statements)

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“…After completion of the first phase of drilling process, the air injection connector could be used to inject high-pressure air in the next phase of drilling process. The pressurized air mixed with the drilling mud would help to increase the performance of underbalanced drilling (Fried et al 1996;Bennion et al 1998;Misselbrook et al 1991;Oyatomari et al 2002).…”

Section: The Design Of Air Injection Connector Systemmentioning

confidence: 99%

Underbalanced drilling technology with air injection connector

Jian-sheng

Rabbi

Wang

2013

J Petrol Explor Prod Technol

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Underbalanced drilling technology has been extended deeply into every corner of the industrial productions and processes. In particular, the technology has a wide range of applications in oil and gas industries for the product design, manufacturing and construction process. In this work, a new air injection connector system has been developed for underbalanced drilling. The system development includes five key issues: original design, manufacturing control, experimental method, on-spot drilling design, and field work point control. The air injection connector system plays an important role and can significantly reduce potential losses during the drilling process.

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Section: The Design Of Air Injection Connector Systemmentioning

confidence: 99%

Underbalanced drilling technology with air injection connector

Jian-sheng

Rabbi

Wang

2013

J Petrol Explor Prod Technol

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“…1 When encountered, this condition is the most undesirable form of corrosion because it is localized, and consequently, causes pitting. Localized corrosion can possess a high concentration of metal loss.…”

Section: Corrosion In Drilling Operationsmentioning

confidence: 99%

“…For most hydrocarbons, the LEL of oxygen is 12-14%; however, in the presence of H 2 S, the LEL is <8%. 1 Consequently, the typical operating range in the field is 95-96% nitrogen purity.…”

Section: Mechanical Reduction Of Oxygenmentioning

confidence: 99%

Combining a Mechanical and Chemical Solution To Mitigate Corrosion in MPD/UBD/Air-Drilling Operations

Kippie

Bellinger

Scott

2007

Proceedings of IADC/SPE Managed Pressure Drilling &Amp; Underbalanced Operations

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TX 75083-3836 U.S.A., fax 1.972.952.9435. AbstractCorrosion mitigation is critical for successful managed pressure drilling (MPD), underbalanced drilling (UBD), and air drilling operations. During these operations, large volumes of gas are injected to lower the hydrostatic pressure in the annulus. Most often the injected gas contains some oxygen and the gas is circulated in combination with some quantity of drilling fluid or liquid. Due to the oxygen content and aqueous environment, corrosion potential during MPD/UBD/air drilling operations is high.Without a proper corrosion mitigation program during these operations, corrosion can lead to the catastrophic failure of drillstring components with corrosion rates 15 times or higher than the industry-acceptable rate of <2 lb/ft 2 /yr. These high corrosion rates can lead to numerous operational problems resulting in higher well costs and/or formation damage.This paper discusses how to properly design, implement, and monitor a successful corrosion program to mitigate corrosion during MPD/UBD/air drilling operations. Furthermore, it highlights a process that utilizes membrane technology as a mechanical means of reducing oxygen concentration in the gaseous media in combination with chemical corrosion inhibitors to alter the drilling fluid environment. By using this process, the corrosion rates can be controlled to satisfactory levels during these operations.Other areas of discussion include membrane technology, drilling fluid chemistry in terms of corrosion control, and the types of corrosion that occur during a MPD/UBD/air drilling operation. Laboratory data will be presented demonstrating the development and limits of the various corrosion control chemistries. And finally, the operational considerations of an effective corrosion control program with case histories will be presented.

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Development of hollow fiber membrane systems for nitrogen generation from combustion exhaust gas

Feng

Ivory²

2000

Journal of Membrane Science

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Gas Supply Alternatives And Corrosion Considerations In Underbalanced Drilling Operations

Cited by 5 publications

References 0 publications

Underbalanced drilling technology with air injection connector

Underbalanced drilling technology with air injection connector

Combining a Mechanical and Chemical Solution To Mitigate Corrosion in MPD/UBD/Air-Drilling Operations

Development of hollow fiber membrane systems for nitrogen generation from combustion exhaust gas

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