A wellbore that is essentially the same diameter as the bit that was used to drill it. It is common to find well-consolidated sandstones and carbonate rocks that remain gauge after being drilled. For clays, it is common for the hole to slowly enlarge with the passing of time, especially if water-base muds are being used. Bit gauges, rings of defined circumference, are slipped around drill bits to detect and measure wear, which reduces the circumference of the bit during drilling.
基于1个网页-相关网页
For clays, it is common for the hole to slowly enlarge with the passing of time, especially if water-base muds are being used.
而对于粘土，通常的情况是井眼随时间增加而缓慢增大，尤其当使用水基泥浆时。
Great care is required in the selection of clays to be used for making agatewares.
在选择用于制作玛瑙器皿的粘土时，需要格外小心。
The physicochemical conditions for the forming of palygorskite clays were alkaline and reduction.
凹凸棒石粘土形成的物理化学条件为偏碱性的还原条件。
应用推荐