| 乌兰哈达变质岩地层地热勘探井钻头选择与取心工艺 |
| 投稿时间：2016-07-28 修订日期：2016-11-25 点此下载全文 |
| 引用本文：宋国龙,董劲松,李进安.乌兰哈达变质岩地层地热勘探井钻头选择与取心工艺[J].钻探工程,2016,43(12):41-44.SONG Guo-long,DONG Jin-son,LI Jin-an. Bit Selection for Geothermal Exploration Well in Metamorphic Strata of Wulanhada and the Coring Technology[J]. Drilling Engineering, 2016,43(12):41-44. |
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| 中文摘要:内蒙古自治区察右后旗乌兰哈达苏木地热勘探井井深2006.87 m。采用石油30型钻机施工，钻遇地层大部分为变质岩，达1500 m以上，对牙轮钻头损坏严重，同时施工要求进行18次岩心采取。经过对钻头的试用、选择，最后选用HJ637G型牙轮钻头，钻进时效可达0.8～1.2 m，使用寿命可达到80～100 h。取心段采用川7-4型双管单动取心筒配合金刚石钻头，岩心采取率可达70%～95%。 |
| 中文关键词:地热勘探井 变质岩地层 HJ637G型牙轮钻头 川7-4型双管单动取心筒 |
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| Bit Selection for Geothermal Exploration Well in Metamorphic Strata of Wulanhada and the Coring Technology |
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| Abstract:Being 2006.87m in depth, Wulanhada geothermal well was constructed with 30 type oil drilling rig in the Inner Mongolia Autonomous Region Chayouhou Banner, most drilled formations, more than 1500m, were metamorphic rocks, the roller bits were seriously damaged; and 18 times of coring were required for the construction. HJ637G roller bit was selected, the drilling efficiency per hour was up to 0.8～1.2m and the service life reached 80～100h. Chuan 7-4 double tube single rotary coring barrel was used, the core recovery could be 70%～95%. |
| keywords:words: geothermal exploration well metamorphic strata HJ637G roller bit Chuan 7-4 double tube single rotary coring barrel |
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