Perspectives for development of ice-core drilling technology: a discussion

Тalalay, Pavel G.

doi:10.3189/2014aog68a007

Cited by 23 publications

(8 citation statements)

References 24 publications

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“…Generally, these systems are referred to as ‘unconventional’ or ‘novel’ drilling systems. Herein, we continue the previous discussion regarding these systems (Talalay, 2014 a ).…”

Section: Unconventional Ice Drilling Systemsmentioning

confidence: 58%

“…Although there exist ice drills that can achieve important scientific goals, new drilling technologies are required to accomplish goals planned for the future. Some of the problems that needed to be solved using advanced ice drilling technology were previously discussed in the proceedings of the Seventh Ice Drilling Symposium (Talalay, 2014 a ). Since then, two monographs providing reviews of ice drilling technology have been published (Talalay, 2016, 2020).…”

Section: Introductionmentioning

confidence: 99%

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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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“…Generally, these systems are referred to as ‘unconventional’ or ‘novel’ drilling systems. Herein, we continue the previous discussion regarding these systems (Talalay, 2014 a ).…”

Section: Unconventional Ice Drilling Systemsmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

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

Тalalay

Hong

2020

Ann. Glaciol.

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“…Drilling of uncased holes is technically possible when drilling fluid is transported through a hose lowered into the hole. However, such technology cannot prevent leaks, especially during tripping operations, and in order to reduce drilling-fluid consumption and environmental contamination, the permeable firn zone should preferably be isolated with a casing (Duphil and others, 2014; Talalay, 2014a).…”

Section: Environmental Measuresmentioning

confidence: 99%

Antarctic subglacial drilling rig: Part III. Drilling auxiliaries and environmental measures

et al. 2020

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The Antarctic subglacial drilling rig (ASDR) is designed to recover 105 mm-diameter ice cores up to 1400 m depth and 41.5 mm-diameter bedrock cores up to 2 m in length. In order to ensure safe and convenient drilling, drilling auxiliaries are designed to support fieldwork and servicing. These auxiliaries are subdivided into several systems for power supply, drill tripping in the borehole, ice core and chip processing, and drill servicing and maintenance. The required equipment also includes two generators, a drilling winch with a cable, logging winch with a cable, control desk, pipe handler with a fixed clamp, chip chamber vibrator, centrifuge, emergency devices and fitting and electrical tools. Additionally, several environmental protective measures such as a new liquid-tight casing with a thermal casing shoe and a bailing device for recovering drilling fluid from the borehole were designed. Most of the auxiliaries were tested during the summer of 2018–2019 near Zhongshan Station, East Antarctica while drilling to the bedrock to a depth of 198 m.

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“…With the increase of mining depth and the change of down-hole conditions, the existing drilling measurement methods can not meet the need of complex wells. Since the late 1960s, MWD technology has developed rapidly in the field of drilling [15]. It is used for real-time formation evaluation and drilling geological guidance.…”

Section: Introductionmentioning

confidence: 99%

Research on Drilling Bit Positioning Strategy Based on SINS MWD System

Yang

Luo

et al. 2019

IEEE Access

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Accurate measurement of drill bit position and direction is the main technology to realize automation and intelligence in oil drilling field. In recent years, with the rapid development of complex drilling technologies such as high deviation wells, directional wells and horizontal wells, higher requirements have been put forward for measurement technology, especially for real-time monitoring of bit attitude and position during the drilling process. Therefore, for the past few years, the measurement while drilling (MWD) system has been widely recognized and developed rapidly in precision targeted drilling. among them, strapdown inertial navigation system (SINS) consisting of accelerometer and gyroscope is the key of down-hole measurement while drilling. To solve the problem of accumulated errors in SINS, in this paper, a positioning error correction method based on kinematic constraint-aided (KC) SINS zero velocity updated (ZUPT) model is proposed. Firstly, based on the acceleration and angular velocity information measured by SINS, empirical mode decomposition (EMD) and wavelet de-noising reconstruction are performed for MWD signals. Secondly, the static detection model of the drill bit is established by using the reconstructed signal. Thirdly, using drilling technology to analyze the motion attitude of the bit, the KC model of the down-hole bit is established. By analysis the alternating effect of the KC model and the ZUPT model in the process of the bit movement and stop, the ZUPT model of the SINS is established. Finally, experimental verification is performed by building a drilling platform. The experimental results show that the maximum positioning error of the proposed positioning model is 0.15 m within 300 s. Comparing with a single KC model and a single ZUPT model, the bit positioning accuracy is improved to 92.6%, which effectively suppresses the original cumulative error, and verifies the feasibility of the proposed method. INDEX TERMS Measurement while drilling system, strap-down inertial navigation system, empirical mode decomposition, kinematic constraint-aided, zero velocity updated.

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Perspectives for development of ice-core drilling technology: a discussion

Cited by 23 publications

References 24 publications

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

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

Antarctic subglacial drilling rig: Part III. Drilling auxiliaries and environmental measures

Research on Drilling Bit Positioning Strategy Based on SINS MWD System

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