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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.
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