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1. | resistive formation |
| 高阻层 |
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2. | depleted formation |
| 枯竭层 |
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3. | unconsolidated formation |
| 松散层 |
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4. | conductive formation |
| 低阻层 |
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5. | anhydrite formation |
| 硬石膏层 |
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6. | noninvaded formation |
| 未受侵入层 |
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7. | formation of interest |
| 目的层 |
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8. | Vaqueros formation |
| 瓦克罗斯层 |
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9. | impervious formation |
| 非渗透层 |
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10. | lacustrine formation |
| 湖积层 |
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