دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: See core bit.

n: The whole set of coring tool consisted by outer barrel, inner barrel, safe joint, rotating bearing and core bit.

n: a bit that does not drill out the centre portion of the hole, but allows this centre portion (the core) to pass through the round opening in the centre of the bit and into the core barrel.

n: The drill bit that breaks the annular rock at bottom and matchs with coring tool.

n: See core bit.

n: See core bit.

n: 1. a small portion of a formation obtained by using a core bit in an existing wellbore. See core bit. 2. a spot sample of the contents of an oil or oil product storage tank usually obtained with a thief, or core sampler, at a given height in the tank.

n: The rock sample whose diameter is from 50mm to 100mm ,acquired from bottom hole when core drilling.

v: to obtain a core from the bottom of an existing well by using a core bit. See core (defn. I),core bit.

n: Drilling for core with coring tool in order to obtain geologic information.

n: The breaking edges of coring bit is manufactured by natural diamond or artificial diamond.

n: Coring by diamond core bit in core drilling.

n: The drilling that acquiring core by diamond core bit.