Oil Rig 8 5/8 inch Casing is a slightly different metal string, called production tubing, is often used without cement in the smallest casing of a well completion to contain production fluids and convey them to the surface from an underground reservoir. When such casings are cemented in place, they aid the drilling process in several ways.
Our oilfield 8 5/8 inch casing and tubing are in accordance with API Spec 5CT. 8 5/8 inch Casing is used for oil and gas well drilling, and tubing is used for extracting oil and gas from reservoirs. Our oil casing includes seamless casing and ERW casing. 8 5/8 inch Casing is the major structural component of a well.
8 5/8 inch Casing is needed to:
- Maintain borehole stability
- Prevent contamination of water sands
- Isolate water from producing formations
- Control well pressures during drilling, production, and work over operations
8 5/8 inch Casing provides locations for the installation of:
- Blowout preventers
- Wellhead equipment
- Production packers
- Production tubing
The cost of 8 5/8 inch casing is a major part of the overall well cost, so selection of casing size, grade, connectors, and setting depth is a primary engineering and economic consideration.
Length of Casings:
API 5CT Range 3 = 34’ – 48’; min avg. length of 36’.
API 5CT Range 2 = 25’ – 34’; min avg. length of 28’
Available Casing Sizes:
- 9 5/8 inch
- 7 5/8 inch
- 5 1/2 inch
- 4 1/2 inch
- 13 3/8 inch
- 11 3/4 inch
- 10 3/4 inch