OCTG Casing
OCTG casings are used to stabilize wellbores and are typically a larger diameter pipe held in place by the borehole using cement. They are designed to help the oil well withstand different external forces such as explosions, stress, chemical corruption, and crushing. These operate by lining the complete borehole and are typically 4.5” to 20” OD (Outer Diameter). Usage can be divided between sleeve pipe, surface casing, and production casing.
There are five different types of well casing pipes:
1
Conductor Casing
Considered the first boundary between the surface and the subsurface, conductor casing is available in sizes ranging from 18” to 36” OD.
2
Surface Casing
Surface casing is used to separate freshwater zones, support wellhead and blowout prevention (BOP) equipment, and protect against blowouts. It is commonly sized at 13-â…œ” OD.
3
Intermediate Casing
Intermediate casings are placed between the surface and the production casing and its size ranges from 13-â…œ” to 16”.
4
Production Casing
Production casings provide structural support and pressure control of any hydrocarbon-bearing sections mainly during the production of oil.
5
Production Liner
Production liners can be suspended from any of the previous casings and assist in cost reduction by eliminating the need to run the liner the full depth of the well.
The Speartip Tubular Difference
Speartip Tubular is a premier oilfield pipe distributor that is committed to solving your most pressing problems with expert services and solutions. If you’re looking for professionally-made OCTG casings, we have an extensive OCTG casing inventory to choose from.