دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The operation of a round pulling out the hole and running due to bit change or other reasons.

round trip time for a circulated fluid.

n: the cost per drilling footage whose expression is Ct=﹛Cb+Cr(Tr+Tc+Tb)﹜/H Cb-the bit cost,Cr- operating cost,Tr- round trip time,Tc-pipe connection time ,Tb-actual bit on bottom time,H-footage drilled,Ct-drilling cost

n: a index to react the drilling efficiency which can be expressed by the formula :drilling speed per run = (drill footage)/〔net drilling time+ round trip time〕

n: which have something to do with the time ,including actual bit on bottom time,round trip time,backreaming
and reaming time.,change bit time,change joint time.

v: to hoist the drill stem out of the wellbore to perform one of a number of operations, such as changing bits or taking a core, and so forth, and then to return the drill stem to the well bore.

the round trip of pulling the drill string from a well and returning it to bottom. Usually done to change or check the bit or to change the BHA.

n: the multiple passes or round trips of the displacer in a prover for purposes of determining a meter factor. v: to establish the meter factor by comparing meter through-put to a prover of known volume.

n: 1. the forward and reverse passes in a bidirectional prover. 2. the volume determined by a bidirectional displacer traveling between detector switches in one direction and in the return direction.

n: the procedure of pulling out and subsequently running back into the hole a string of drill pipe or tubing. Also called tripping.

n: the process by which the entire drill string is pulledout of the holeand run backin again (ususlly to change the bit or BHA(q.v.)).

Pulling a string of pipe from a well and returning to bottom.

n: The full time from trip out to trip in for changing bit or logging .