Casing and tubulars or Tubing
Casing and tubulars or Tubing
(OP)
Hello, I am new to Petroluem drilling. I would like to know the difference between a tubing and casing. Thanks
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Casing and tubulars or Tubing
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RE: Casing and tubulars or Tubing
http://www.glossary.oilfield.slb.com/
RE: Casing and tubulars or Tubing
RE: Casing and tubulars or Tubing
David
RE: Casing and tubulars or Tubing
RE: Casing and tubulars or Tubing
RE: Casing and tubulars or Tubing
Thats a great definition.
Casing is cemented in the open hole so that crossflow of fluids will not occur between different reservoirs.
Tubing is run in the cased hole to decrease the cross sectional area of flow to increase velocity and prevent liquid loading.
RE: Casing and tubulars or Tubing
I think casing with "larger" diameter, while tubing with smaller diameter.
RE: Casing and tubulars or Tubing
So for example, when I install and cement 4-1/2" casing, I turn to the tubing section of API 5CT for its size and performance data.
Both tubing and casing are OCTG (oil county tubular goods). Colloquially tubing is the tube the oil or gas flows up and is supended inside the casing that lines the wellbore. However, I've seen 7" tubing and 4" casing in different wells, and uncemented casing (horizontal liners anyone?) and cemented tubing (OK that was a cock up while we were trying to do a water shut-off but still....)