API Casing and TubingAPI Casing and TubingAPI Casing and Tubing
API Casing and TubingAPI Casing and TubingAPI Casing and Tubing

API Casing and Tubing

Standard: API 5CT, ISO11960, API 5B, API Q1
Specification: Tubing 1.315’- 4-1/2’    Casing 4-1/2’- 20’
Steel Grade: H40,J55,K55,N80,L80-1,L80-9Cr,L80-13Cr,C90,T95,C110,Q125,V130,V140,V150
Connection: STC,LTC,BTC

Casing

Well casing and tubing is an integral part of the oil drilling and completion process.

In general, casing provides structure and strength to the walls of the well hole so that it doesn’t collapse on itself. It also ensures that there is no seepage of oil or natural gas out of the well hole as these are brought to the surface.

We are also able to supply casing with non-API specifications for special situations, including those with semi-premium and premium connections.

Below is a list of standard API5CT specifications, all of which we supply.

Specification

Sizes

Outside Diameter (Inches)

Available Poundage (Pounds Per Foot)

 

4-1/2

9.50 PPF to 15.10 PPF

 

5

11.50 PPF to 24.10 PPF

 

5-1/2

14.00 PPF to 43.10 PPF

 

6-5/8

20.00 PPF to 32.00 PPF

 

7

17.00 PPF to 57.10 PPF

 

7-5/8

24.00 PPF to 55.30 PPF

 

7-3/4

46.10 PPF

 

8-5/8

24.00 PPF to 49.00 PPF

 

9-5/8

32.30 PPF to 75.60 PPF

 

10-3/4

32.75 PPF to 85.30 PPF

 

11-3/4

42.00 PPF to 71.00 PPF

 

13-3/8

48.00 PPF to 72.00 PPF

 

16

65.00 PPF to 109.00 PPF

 

18-5/8

87.50 PPF

 

20

94.00 PPF to 133.00 PPF

Material Grades

H40, J55, K55, M65, N80, N80Q, L80, C90, C95, T95, P110, Q125, L80-9CR, L80-13CR

Connections

SC (Short round Thread Casing),

LC (Long round Thread Casing),

BC (Buttress Thread Casing),

 

Lengths

Range 1, Range 2 & Range 3

Product Level Specification

PSL-1

PSL-2

PSL-3

Supplementary Requirement – Only Upon Request

Protection

Externally Coated with Anti-Rust Mill Varnish

Plastic , Metal or Composite Pin and Box Protectors.

Internal ID - Bare, Without Coating.

Mill Test Certificates

Issued in accordance with API Specification 5CT latest Edition at time of mill rolling.

 

Third Party Inspection can be performed on request at buyer’s care and expense.

Tubing

Once the casing is run and held in place with cement, production tubing is run into the oilwell.

Joints of tubing are connected together with couplings to make up a tubing string. Running tubing into an oilwell is much the same as for running in casing, but tubing is smaller in diameter and is removable.

The prodution string provides a continuous bore from the reservoir to the wellhead and together with the other components of the production string, produces oil and gas at the surface.

As opposed to casing, production tubing is designed to enable quick, efficient, and safe installation, removal and re-installation.

Oil and gas is also produced more effectively through tubing than through larger-diameter production casing.

API5CT Tubing Specifications:

Specification

 

Sizes

Outside Diameter (Inches)

Corresponding Poundage (Pounds Per Foot)

 

1.050

1.14 PPF to 1.54 PPF

 

1.315

1.70 PPF to 2.24 PPF

 

1.660

2.09 PPF to 3.07 PPF

 

1.900

2.40 PPF to 5.15 PPF

 

2.063

3.24 PPF to 4.50 PPF

 

2-3/8

4.00 PPF to 7.45 PPF

 

2-7/8

6.40 PPF to 11.50 PPF

 

3-1/2

7.70 PPF to 17.00 PPF

 

4

9.50 PPF to 22.20 PPF

 

4-1/2

12.60 PPF to 26.10 PPF

Grades

H40, J55, N80, N80Q, L80, C90, C95, T95, P110, 13CR

Connections

NUE (non-upset tubing),

EUE (external upset tubing),

Lengths

Range 1, Range 2 & Range 3

Protection

External Bare and Uncoated OR Externally Coated with Anti-Rust Mill Varnish

Plastic OR Metal Pin and Box Protectors.

Internal Plastic Coating OR Sleeves.

Mill Test Certificates

Issued in accordance with API Specification 5CT Eighth Edition.

 

Third Party Inspection can be performed on request at buyer’s care and expense.

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