 |
| |||
| 出油量不多的新油井 | |||
| 干孔 (井); 干〔上斜〕炮眼 | |||
| 干孔; 非出水井; 废孔 | |||
| 干炮孔 | |||
| 干井 | |||
| 乏油井; 干钻孔; 干炮眼; 未见矿钻孔; 上斜炮眼 | |||
| dry hole: 23 phrases in 6 subjects |
| Drilling | 6 |
| Economy | 2 |
| Geology | 1 |
| Mining | 1 |
| Oil / petroleum | 9 |
| Technology | 4 |
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