单词 | freeze |
释义 | freeze [frēz] ENGINEERING 1. To permit drilling tools, casing, drivepipe, or drill rods to become lodged in a borehole by reason of caving walls or impaction of sand, mud, or drill cuttings, to the extent that they cannot be pulled out. Also known as bind-seize. 2. To burn in a bit. Also known as burn-in. 3. The premature setting of cement, especially when cement slurry hardens before it can be ejected fully from pumps or drill rods during a borehole cementation operation. 4. The act or process of drilling a borehole by utilizing a drill fluid chilled to minus 30-40°F, (minus 34-40°C) as a means of consolidating, by freezing, the borehole wall materials or core as the drill penetrates a water-saturated formation, such as sand or gravel. PHYSICAL CHEMISTRY To solidify a liquid by removal of heat. |
随便看 |
科学参考收录了103327条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。