Lost circulation can be one of the more serious problems that can arise during the drilling of an oil well or gas well. Circulation is said to be lost when the drilling fluid, known commonly as "mud", flows into one or more geological formations instead of returning up the annulus.
Read more about Lost Circulation: Consequences, Categories, Control, Additives, Additive Considerations
Famous quotes containing the words lost and/or circulation:
“Was there ever a cause too lost,
Ever a cause that was lost too long....”
—Robert Frost (1874–1963)
“There is probably not more than one hundred dollars in cash in circulation today. That is, if you were to call in all the bills and silver and gold in the country at noon tomorrow and pile them on the table, you would find that you had just about one hundred dollars, with perhaps several Canadian pennies and a few peppermint Life Savers.”
—Robert Benchley (1889–1945)