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Concerning this, how is Bottoms Up calculated?
“Bottoms Up” Strokes = Annular Quantity bbls / Pump Output in bbls-stk. The very first thing we should to do in an effort to calculate “Bottoms Up” or Bit to Floor” strokes is to seek out the Annular Quantity. Annular Quantity bbls = (Dh^2 – OD^2) / 1029.4 x Size in ft, the place Dh is the opening diameter.
Moreover, how is lag time calculated in drilling? With sure annular quantity, the lag time, usually expressed in minutes, might be decided by dividing the annular quantity (bbls) by the movement rate (bbl/min). If there are modifications in mud movement rate, the lag time determine will likely be modified as nicely.
Accordingly, how do you calculate lag time?
Time = Distance / Velocity What would the lag time be if the space traveled had been 500 miles? Car A would take 10 hours to journey 500 miles, however Car B would take 20 hours. The lag time right here is 10 hours. So, the sample you must observe right here is “the better the space, the longer the lag time.”
What does bottoms up imply in drilling?
adj. [ Drilling] Pertaining to the mud and cuttings which might be calculated or measured to return from the backside of the opening for the reason that begin of circulation. Circulation could also be initiated after a static interval, similar to a visit, or from a given depth whereas drilling.
What’s a lag time?
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Why do we are saying bottoms up?
Definition: Drink! Individuals will say, “bottoms up” to encourage others to drink one thing. If you’re holding a cup filled with liquid and raise it to your mouth to drink, you’re elevating the cup in order that the backside can be seen, thus bringing the backside up.
What’s backside mud?
What’s closed finish displacement?