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

(5 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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“…Recently, air drilling with reverse circulation, which has been widely used in normal drilling industries including mineral exploration, geothermal wells, underground water drilling and so on, has been proposed for use in ice core drilling (Wang and others, 2017). The main characteristic of this technology is that the air is circulated in a reverse manner as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

“…The second is whether the reverse circulation can be effectively formed with the appearance of ice cores. In the work by Wang and others (2017) and Cao and others (2018a), the minimum air volume flow rate and the pressure drop needed to convey ice cores were studied. The results show that the air injection parameters required in ice core drilling are much lower than that of conventional rock drilling if the diameter and the length of the ice core are set as 60 and 250 mm, respectively.…”

Section: Introductionmentioning

confidence: 99%

Orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation

et al. 2019

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A new type of ice core drill bit, designed with a vane swirler, was developed for ice core drilling with air reverse circulation. An orthogonal experimental design method was employed to investigate the effects of the swirler structure parameters on the reverse circulation performance of the drill bit including helical angle, number of blades, blade length and blade central angle, etc. The entrainment ratio was used to evaluate the reverse circulation effectiveness of the drill bit. The results show that the helical angle is the dominant factor regardless of whether or not the flushing nozzles are part of the design of the drill bit. The number of blades is the least important factor for the drill bit designed with the flushing nozzles (referred to as drill bit I), while the outlet area of the swirling slot is the least influential factor for the drill bit without flushing nozzles (referred to as drill bit П). In addition, the appearance of the ice core has a certain effect on the air reverse circulation for both drill bits. Within the ranges of this study, the optimal structure of the drill bit was determined based on the range analysis of the orthogonal design.

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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

Orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation

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