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Well control techniques in hot dry rock drilling
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Science & Technology Review | 2015, 33(19) : 45 - 48
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Science & Technology Review | 2015, 33(19): 45-48
• Special Issues •
Well control techniques in hot dry rock drilling
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ZHANG Delong, WENG Wei, JIA Jun, HUANG Yuwen, FENG Meigui
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    Beijing Institute of Exploration Engineering, Beijing 100083, China
Published: 2015-10-13 doi: 10.3981/j.issn.1000-7857.2015.19.006
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Hot dry rock formations are usually igneous rock with poor drillability and high temperature. Circulation loss, blowout, well kick and other drilling accidents occur frequently in hot dry rock drilling. Domestic well control techniques and equipment cannot meet the requirement of hot dry rock drilling. To satisfy the need of high-temperature well control and guarantee construction safety, this paper analyzes the relationship between the formation temperature, pressure and blowout and designs a high-speed rotary blowout preventer and control system with simple structure and high-temperature capacity, which can improve the drilling efficiency and reduce drilling risks.
hot dry rock drilling  /  high-temperature well control  /  rotary blowout preventer  /  operating system
张德龙, 翁炜, 贾军, 黄玉文, 冯美贵. 干热岩钻探井控技术研究. 科技导报, 2015 , 33 (19) : 45 -48 . DOI: 10.3981/j.issn.1000-7857.2015.19.006
ZHANG Delong, WENG Wei, JIA Jun, HUANG Yuwen, FENG Meigui. Well control techniques in hot dry rock drilling[J]. Science & Technology Review, 2015 , 33 (19) : 45 -48 . DOI: 10.3981/j.issn.1000-7857.2015.19.006
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Year 2015 volume 33 Issue 19
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Article Info
doi: 10.3981/j.issn.1000-7857.2015.19.006
  • Receive Date：2015-08-21
  • Online Date：2015-10-16
  • Published：2015-10-13
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  • Received：2015-08-21
  • Revised：2015-08-31
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10.3981/j.issn.1000-7857.2015.19.006
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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