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It is used to change the direction of a pull applied by a
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
Ope or cable, or, when used in pairs, to exert increased force. blocks are classed as single, double, triple, etc., according to the number of pulleys con tained in a single shell. 4. a sheave.
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Collared casing, английский
Ordinary pipe joined with pipe collars or couplings.
Outside clearance, английский
One-half the total difference between the outside diameter of any piece of downhole equipment and the inside diameter of the borehole.
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