Optimization of Hot-Water Drilling in Ice with Near-Bottom Circulation
Hot-water drilling in ice with near-bottom circulation is more advantageous than traditional hot-water drilling with all-over borehole circulation in terms of power consumption and weight. However, the drilling performance of this type of drill has been poorly studied. Initial experiments showed tha...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/1/127 |
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| author | Gaoli Zhao Pavel G. Talalay Xiaopeng Fan Nan Zhang Yunchen Liu Ting Wang Yanji Chen |
| author_facet | Gaoli Zhao Pavel G. Talalay Xiaopeng Fan Nan Zhang Yunchen Liu Ting Wang Yanji Chen |
| author_sort | Gaoli Zhao |
| collection | DOAJ |
| description | Hot-water drilling in ice with near-bottom circulation is more advantageous than traditional hot-water drilling with all-over borehole circulation in terms of power consumption and weight. However, the drilling performance of this type of drill has been poorly studied. Initial experiments showed that drilling with single-orifice nozzles did not proceed smoothly. To achieve the best drilling performance, nozzles with different orifice numbers and structures are evaluated in the present study. The testing results show that a single-orifice nozzle with a 3 mm nozzle diameter and a nine-jet nozzle with a forward angle of 35° had the highest rate of penetration (1.7–1.8 m h<sup>−1</sup>) with 5.6–6.0 kW heating power. However, the nozzles with backward holes ensured a smoother drilling process and a larger borehole, although the rate of penetration was approximately 13% slower. A comparison of the hollow and solid thermal tips showed that under the same experimental conditions, the hollow drill tip had a lower flow rate, higher outlet temperature, and higher rate of penetration. This study provides a prominent reference for drilling performance prediction and drilling technology development of hot-water drilling in ice with near-bottom circulation. |
| first_indexed | 2024-03-10T03:11:16Z |
| format | Article |
| id | doaj.art-361007c4cb1a4534b4ff538dcceb817e |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T03:11:16Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-361007c4cb1a4534b4ff538dcceb817e2023-11-23T12:33:16ZengMDPI AGWater2073-44412022-01-0114112710.3390/w14010127Optimization of Hot-Water Drilling in Ice with Near-Bottom CirculationGaoli Zhao0Pavel G. Talalay1Xiaopeng Fan2Nan Zhang3Yunchen Liu4Ting Wang5Yanji Chen6Polar Research Center, Institute for Polar Science and Engineering, Jilin University, Changchun 130026, ChinaPolar Research Center, Institute for Polar Science and Engineering, Jilin University, Changchun 130026, ChinaPolar Research Center, Institute for Polar Science and Engineering, Jilin University, Changchun 130026, ChinaPolar Research Center, Institute for Polar Science and Engineering, Jilin University, Changchun 130026, ChinaPolar Research Center, Institute for Polar Science and Engineering, Jilin University, Changchun 130026, ChinaPolar Research Center, Institute for Polar Science and Engineering, Jilin University, Changchun 130026, ChinaPolar Research Center, Institute for Polar Science and Engineering, Jilin University, Changchun 130026, ChinaHot-water drilling in ice with near-bottom circulation is more advantageous than traditional hot-water drilling with all-over borehole circulation in terms of power consumption and weight. However, the drilling performance of this type of drill has been poorly studied. Initial experiments showed that drilling with single-orifice nozzles did not proceed smoothly. To achieve the best drilling performance, nozzles with different orifice numbers and structures are evaluated in the present study. The testing results show that a single-orifice nozzle with a 3 mm nozzle diameter and a nine-jet nozzle with a forward angle of 35° had the highest rate of penetration (1.7–1.8 m h<sup>−1</sup>) with 5.6–6.0 kW heating power. However, the nozzles with backward holes ensured a smoother drilling process and a larger borehole, although the rate of penetration was approximately 13% slower. A comparison of the hollow and solid thermal tips showed that under the same experimental conditions, the hollow drill tip had a lower flow rate, higher outlet temperature, and higher rate of penetration. This study provides a prominent reference for drilling performance prediction and drilling technology development of hot-water drilling in ice with near-bottom circulation.https://www.mdpi.com/2073-4441/14/1/127near-bottom circulationnozzleshot-water drillingthermal tip |
| spellingShingle | Gaoli Zhao Pavel G. Talalay Xiaopeng Fan Nan Zhang Yunchen Liu Ting Wang Yanji Chen Optimization of Hot-Water Drilling in Ice with Near-Bottom Circulation Water near-bottom circulation nozzles hot-water drilling thermal tip |
| title | Optimization of Hot-Water Drilling in Ice with Near-Bottom Circulation |
| title_full | Optimization of Hot-Water Drilling in Ice with Near-Bottom Circulation |
| title_fullStr | Optimization of Hot-Water Drilling in Ice with Near-Bottom Circulation |
| title_full_unstemmed | Optimization of Hot-Water Drilling in Ice with Near-Bottom Circulation |
| title_short | Optimization of Hot-Water Drilling in Ice with Near-Bottom Circulation |
| title_sort | optimization of hot water drilling in ice with near bottom circulation |
| topic | near-bottom circulation nozzles hot-water drilling thermal tip |
| url | https://www.mdpi.com/2073-4441/14/1/127 |
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