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| 245 | 0 | 0 | _aFinding ways to improve UBD hole cleaning |
| 270 | _a12/09/06 ; 07/06/2006 | ||
| 300 | _a2 p. | ||
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_tDrilling Contractor _gVol. 62, no. 3 (mayo/jun. 2006) ; p. 58-59 |
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| 942 | _cARTICULO | ||
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_aZhou, Lei _948588 |
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| 650 | 0 |
_aUnderbalanced Drilling _94211 |
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_aLimpieza de pozos _92795 |
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