Zobrazeno 1 - 10
of 61
pro vyhledávání: '"PINLU CAO"'
Publikováno v:
Heliyon, Vol 10, Iss 11, Pp e32319- (2024)
This study aims to prevent ice accumulation on the surface of drilling tools by investigating the effectiveness of hydrophobic coatings, which is one of the most promising methods to solve drilling difficulties in warm ice. Herein, four types of hydr
Externí odkaz:
https://doaj.org/article/51cff6a7113546b6b2788f568f8341f2
Autor:
Xiaopeng Fan, Pavel Talalay, Youhong Sun, Xingchen Li, Nan Zhang, Alexey Markov, Yang Yang, Pinlu Cao, Rusheng Wang, Yongwen Liu, Yunchen Liu, Ting Wang, Wei Wu, Cheng Yang, Jialin Hong, Da Gong, Han Zhang, Mikhail Sysoev, Xiao Li, An Liu, Yazhou Li
Publikováno v:
Annals of Glaciology, Vol 62, Pp 24-33 (2021)
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 designe
Externí odkaz:
https://doaj.org/article/eb6ce18347a34c45a7af16c172d6a097
Autor:
Pavel Talalay, Youhong Sun, Xiaopeng Fan, Nan Zhang, Pinlu Cao, Rusheng Wang, Alexey Markov, Xingchen Li, Yang Yang, Mikhail Sysoev, Yongwen Liu, Yunchen Liu, Wei Wu, Da Gong
Publikováno v:
Annals of Glaciology, Vol 62, Pp 1-11 (2021)
Drilling to the bedrock of ice sheets and glaciers offers unique opportunities for examining the processes occurring in the bed. Basal and subglacial materials contain important paleoclimatic and paleoenvironmental records and provide a unique habita
Externí odkaz:
https://doaj.org/article/756a09a560bf4d0ca1dff57dc19a2191
Autor:
Pavel Talalay, Xingchen Li, Nan Zhang, Xiaopeng Fan, Youhong Sun, Pinlu Cao, Rusheng Wang, Yang Yang, Yongwen Liu, Yunchen Liu, Wei Wu, Cheng Yang, Jialin Hong, Da Gong, Han Zhang, Xiao Li, Yunwang Chen, An Liu, Yazhou Li
Publikováno v:
Annals of Glaciology, Vol 62, Pp 12-22 (2021)
A new, modified version of the cable-suspended Ice and Bedrock Electromechanical Drill (IBED) was designed for drilling in firn, ice, debris-rich ice and rock. The upper part of the drill is almost the same for all drill variants and comprises four s
Externí odkaz:
https://doaj.org/article/a89598d879e144e9a721bb216cd40edd
Publikováno v:
Journal of Glaciology, Vol 66, Pp 618-626 (2020)
Using an anti-icing coating to prevent ice accretion on the drill surface is a feasible solution to address the drilling difficulties in warm ice. In this study, four types of commercially available hydrophobic coating materials were tested to evalua
Externí odkaz:
https://doaj.org/article/02676bf7f04a4fd995260f69ffb4a42b
Publikováno v:
Geofluids, Vol 2022 (2022)
A swirling drill bit designed with an integrated vane swirler was developed to improve reverse circulation in down-the-hole hammer drilling. Its entrainment effect and influential factors were investigated by CFD simulation and experimental tests. Th
Externí odkaz:
https://doaj.org/article/3c6de46561e1475dba0a6a346d93fe68
Publikováno v:
Journal of Marine Science and Engineering, Vol 10, Iss 11, p 1603 (2022)
Ice core drilling with air reverse circulation is a promising technology that uses high-speed airflow to transport the ice core from the bottom of the hole along the central passage of the drill pipe to the surface. Understanding how the ice core mov
Externí odkaz:
https://doaj.org/article/f23f660c2f1f4b61bc0221eec59b7291
Publikováno v:
Journal of Glaciology, Vol 65, Pp 1011-1022 (2019)
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
Externí odkaz:
https://doaj.org/article/436f9856d1e34bd9b600d0d746ee37da
Publikováno v:
Energy Science & Engineering, Vol 7, Iss 6, Pp 2410-2420 (2019)
Abstract Defoaming is a key technology for increasing the efficiency of foam drilling in petroleum engineering. To enhance the performance of a mechanical foam breaker in foam drilling, a novel aerodynamic foam breaker with two annular slits was inve
Externí odkaz:
https://doaj.org/article/6f7b119fa3114373bfcc6139f372b861
Autor:
ZHENGYI HU, PAVEL TALALAY, ZHICHUAN ZHENG, PINLU CAO, GUITAO SHI, YUANSHENG LI, XIAOPENG FAN, HONGMEI MA
Publikováno v:
Journal of Glaciology, Vol 65, Pp 149-156 (2019)
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 hav
Externí odkaz:
https://doaj.org/article/424efc6fcdf846b9a36e01f0e3b0fd47