OCR Text |
Show SayAah! Checking the temperature of an oil well is a Uicky procedure, especially es-pecially since temperatures at well bottom usually range from 212 degrees de-grees Fahrenheit the boiling point of water, to . about 400 degrees. These temperatures are recorded by various types of specialized thermometers, with many important import-ant purposes. Finding the level of concrete outside' casing, or locating casing leaks, for instance, can be accomplished accom-plished by pinpointing the position of abrupt temperature changes within the well. Oil men are noted for their ingenious in-genious adaptation of methods and instruments to the special needs of the industry. |