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:
“And get the fatted calf and kill it, and let us eat and celebrate; for this son of mine was dead and is alive again; he was lost and is found!’ And they began to celebrate.”
—Bible: New Testament, Luke 15:23,24.
“We did not heed the sentries at the gate, nor did they us, and what under the sun they were placed there for, unless to hinder a free circulation of the air, was not apparent.”
—Henry David Thoreau (1817–1862)