Rapid ice drilling with continual air transport of cuttings and cores: General concept

Wang, Rusheng; An, Lin; Cao, Pinlu; Chen, Baoyi; Sysoev, Mikhail; Fan, Dayou; Тalalay, Pavel G.

doi:10.1016/j.polar.2017.09.004

Cited by 18 publications

(7 citation statements)

References 14 publications

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“…Moreover, it produces a clean, straight hole in dense firn and solid ice, although it may cause hole widening in the soft upper firn. Recently, several studies have been conducted to prove the feasibility of this drilling method in the context of glacial investigations (Wang and others, 2017; Cao and others, 2019).…”

Section: New Approaches To the Old Challengesmentioning

confidence: 99%

Perspectives for development of ice drilling technology: continuation of the discussion

Тalalay

Hong

2020

Ann. Glaciol.

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Recently, innovations in ice drilling have yielded considerable improvements to existing drilling techniques, as well as innovative drilling technologies that can be used in new types of applications. However, some specific challenges have to be addressed for improving existing drilling methods and developing new ones: (1) combination and unification of different drilling systems; (2) facilitating ice core breaking; (3) improving existing systems and developing new rapid-access ice drilling systems; (4) reliable elimination of ice hydraulic fracturing problems; (5) developing new environment-friendly methods of drilling in the sub-glacial lake sediments; and (6) design of unconventional ice drilling systems. Possible solutions to these problems are presented herein.

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Section: New Approaches To the Old Challengesmentioning

confidence: 99%

Perspectives for development of ice drilling technology: continuation of the discussion

Тalalay

Hong

2020

Ann. Glaciol.

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“…Continuous flight augers and hot water drills have been deployed for this purpose in the past. The fastest of these are hot water drills with typical penetration rates as high as 60 m hr −1 (Wang and others, 2017). However, drilling ice using compressed air to clear chips, a method attempted as early at the mid-20th century (e.g.…”

Section: Introductionmentioning

confidence: 99%

RAM-2 Drill system development: an upgrade of the Rapid Air Movement Drill

et al. 2020

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Significant upgrades to the Rapid Air Movement (RAM) Drill were developed and tested by the US Ice Drilling Program in 2016 through 2020 for the U.S. National Science Foundation. The design of the system leverages the existing infrastructure of the RAM Drill with the goal of greatly reducing the logistical burden of deploying the drill while maintaining the ability to drill an access hole in firn and ice to 100 m in 40 min or less. In this paper, characteristics of the drill are described, along with a description of the drill performance during the testing at Raven Camp in Greenland and at WAIS Divide Camp in Antarctica.

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“…In the 2010–2011 Antarctic field season, the drill could not reach depths below 63 m at the South Pole. To avoid airflow failure, Wang and others (2017) suggested using conventional reverse-circulation drilling technology with dual-wall drill rods in which compressed air flows downward through the annular space of the double-wall drill pipes and the inner tubes provide a continuous pathway for the chips and cores from the coring head to the surface. However, all these drill rigs are still bulky, consume a lot of power and need a powerful air compressor to create enough air pressure for ice cuttings removal.…”

Section: Introductionmentioning

confidence: 99%

Air reverse circulation at the hole bottom in ice-core drilling

Тalalay

Zheng

et al. 2019

J. Glaciol.

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Ice-core drilling to depths of 200–300 m is an important part of research studies concerned with paleoclimate reconstruction and anthropogenic climate change. However, conventional drilling methods face difficulties due to firn permeability. We have developed an electromechanical ice-core drill with air reverse circulation at the hole bottom. We believe that the new drilling system will recover ice cores faster than shallow auger drills, with high efficiency and low energy consumption. The theoretically estimated up-hole speed of the airflow should be not <7.7 m s−1 to allow proper removal of ice cuttings from the borehole bottom. The computer simulation and test results showed that the design of the new ice-coring drill is feasible. The maximum allowed penetration rate depends by square law on airflow.

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Rapid ice drilling with continual air transport of cuttings and cores: General concept

Cited by 18 publications

References 14 publications

Perspectives for development of ice drilling technology: continuation of the discussion

Perspectives for development of ice drilling technology: continuation of the discussion

RAM-2 Drill system development: an upgrade of the Rapid Air Movement Drill

Air reverse circulation at the hole bottom in ice-core drilling

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