PEMSCO Ltd.
Oilfield Equipment Supplies

Oil Country Tubular Goods (OCTG)

2. Casing, Tubing and Associated Products 


 

Casing and Tubing
In recent years, the Chinese manufactures have cooperated with universities and research centers in the research on casing and tubing and have gained many good results. The product quality has been greatly improved. Many types of special casings and tubings including anticorrosion casing and tubing, high collopse casing, high temperature casing, premium connection casing and tubing have been successively developed some of which have reached the level of world class.
• Application
• Casing for oil and gas well drilling
• Tubing for oil and gas extraction
• Product Type
• Seamless casing and coupling
• ERW casing
• Seamless tubing and coupling
• Anticorrosion casing and tubing
• High collapse casing
• High temperature casing
• Premium thread connection casing and tubing
• Pup-joint of casing and tubing
• Crossover of casing and tubing

• Features
• High precision in size and shape
• Good corrosion resistance
• High collapse strength
• Excellent comprehensive mechanical properties
• High connection strength and sealability
• Constant mechanical properties at high temperature

• Specifications
• API Spec 5CT Specification for Casing and Tubing
• API Spec 5B Specification for Threading, Gauging, and thread Inspection of Casing, Tubing, and Line Pipe Thread
• Other manufactures' specifications higher than API Spec
• Production Capacity
Products Pipe type Steel grade Outside diameter
mm (in)		 Wall thickness mm (in) Thread type Production capacity t/y (US ton/y)
Casing  and Coupling Seamless Pipe J55, K55, M65, L80, N80, C90, C95, Pl10 114.3-508.0 (4-1/2-20) 5.2-16.13
 (0.22-0.635)		 PSLBE2 2, 250, 000  (2, 475, 000)
TP65H, TP80S, TP80SS, TP80T, TP80TS, TP80CQJ, TP90S, TP90SS, TP90, TP90H, TP95S, TP95SS, TP95T, TP95TS, TP95TT, TP100, TP100H, TP110T, TP110TT, TP110CQJ, TP125TT1 114.3-339.7 (4-1/2-13-3/8) 5.2-15.88
(0.22-0.625)		 PSLB
TP-CQ3		 200, 000  (220, 000)
ERW Pipe J55, K55 139.7-508.0 (5-1/2-20) 5.87-13.84
(0.23-0.545)		 PSLB 500, 000  (550, 000)
Tubing and Coupling Seamless Pipe J55, L80, N80, C90, Pll0, BG-80SS4 48.26-114.3 (1.90-4-1/2) 3.68-9.52
(0.145-0.375)		 PNU5
BGT
BGT-16		 930, 000
(1, 023, 000)

Notes:1H=high temperature casing, S=sour service casing, SS=special sour service casing, T=high collapse casing, TS=sour service & high collapse casing, TT=special high collapse casing,CQJ=high fatigue strength casing, TP=a code name of non API series;
2P=plain end, S=short round thread, L=long round thread, B=buttress thread, E=extreme-line;
3TP-CQ=premium thread connection of TP series;
4BG-80SS=special sour service tubing of BG series, BG= a code name of non API series;
5P=plain end, N=non-upset thread and coupled, U=external upset thread and coupled;
6BGT, BGT-1= premium thread connection of BG series.
• Process Flowchart of Casing and Tubing


• Technical Parameters of Seamless Casing
Outside diameter Wall thickness Nominalweight Type of end-finish
mm in mm in Kg/m lb/ft J55K55 M65 L80C95 N80 C90T95 P110 Non apiseries
114.30 4-1/2 5.21 0.205 14.14 9.50 PS PS - - - - PS
5.69 0.224 15.63 10.50 PSB PSB - - - - PSB
6.35 0.25 17.26 11.60 PSLB PLB PLB PLB PLB PLB PLB
7.37 0.29 20.09 13.50 - PLB PLB PLB PLB PLB PLB
8.56 0.337 22.47 15.10 - - - - - PLB PLB
127.00 5 5.59 0.22 17.11 11.50 PS PS - - - - PS
6.43 0.253 19.35 13.00 PSL PSLB - - - - PSLB
7.52 0.296 22.32 15.00 PSLB PLB PSLBE PSLBE PLBE PSLBE PSLB
9.19 0.362 26.79 18.00 - PLB PSLBE PSLBE PLBE PSLBE PSLB
11.10 0.437 31.85 21.40 - PLB PLB PLB PLB PLB PLB
12.14 0.478 34.53 23.20 - - PLB PLB PLB PLB PLB
12.70 0.500 35.86 24.10 - - PLB PLB PLB PLB PLB
139.70 5-1/2 6.2 0.244 20.83 14.00 PS PS - - - - PLB
6.98 0.275 23.07 15.50 PSLBE PSLB - - - - PLB
7.72 0.304 25.3 17.00 PSLBE PLB PSLBE PSLBE PLB PSLBE PSLB
9.17 0.361 29.76 20.00 - PLB PSLBE PSLBE PLB PSLBE PSLB
10.54 0.415 34.23 23.00 - PLB PSLBE PSLBE PLB PSLBE PSLB
168.28 6-5/8 7.32 0.288 29.76 20.00 PSLB PSLB - - - - PSLB
8.94 0.352 35.72 24.00 PSLBE PLB PSLBE PSLBE PSLB PSLB PSLB
10.59 0.417 41.67 28.00 - PLB PSLBE PSLBE PSLB PSLB PSLB
12.06 0.475 47.62 32.00 - - PSLBE PSLBE PSLB PSLB PSLB
177.80 7 6.91 0.272 29.76 20.00 PS PS - - - - PS
8.05 0.317 34.23 23 PSLBE PLB PSLBE PSLBE PLBE - PSLB
9.19 0.362 38.69 26 PSLB PLB PSLBE PSLBE PLBE PSLBE PSLB
10.36 0.408 43.16 29 - PLB PSLBE PSLBE PLBE PSLBE PSLB
11.51 0.453 47.62 32 - PLB PSLBE PSLBE PLBE PSLBE PSLB
12.65 0.498 52.13 35 - - PSLBE PSLBE PLBE PSLBE PSLB
13.72 0.540 56.60 38 - - PSLBE PSLBE PLBE PSLBE PSLB
193.68 7-5/8 8.33 0.328 39.29 26.4 PSLB PSLB PLB PLB PLBE - PSLB
9.52 0.375 44.20 29.7 - PLB PLB PLB PLBE PLB PLB
10.92 0.430 50.15 33.7 - PLB PLB PLB PLBE PLB PLB


193.68 7-5/8 12.70 0.500 58.05 39.00 - - PLB PLB PLBE PLB PLB
14.27 0.562 63.69 42.80 - - PLB PLB PLB PLB PLB
15.11 0.595 67.41 45.30 - - PLB PLB PLB PLB PLB
15.88 0.625 70.09 47.10 - - PLB PLB PLB PLB PLB
219.08 8-5/8 6.71 0.264 35.75 24.00 PS PS - - - - PS
7.72 0.304 41.67 28.00 - PS - - - - PS
8.94 0.352 47.66 32.00 PSLB PSLB - - - - PSLB
10.16 0.400 53.62 36.00 PSLB PSLB PLB PLB PLBE - PSLB
11.43 0.450 59.58 40.00 - PLB PLB PLB PLBE PLB PLB
12.70 0.500 65.54 44.00 - - PLB PLB PLBE PLB PLB
14.15 0.557 72.99 49.00 - - PLB PLB PLBE PLB PLB
244.48 9-5/8 8.94 0.352 53.57 36.00 PSLB PSLB - - - - PLB
10.03 0.395 59.53 40.00 PSLB PSLB PLB PLB PLB
PLB
11.05 0.435 64.73 43.50 - PLB PLB PLB PLB PLB PLB
11.99 0.472 69.94 47.00 - PLB PLB PLB PLB PLB PLB
13.84 0.545 79.62 53.50 - - PLB PLB PLB PLB PLB
15.11 0.595 86.91 58.40 - - PLB PLB PLB PLB PLB
273.05 10-3/4 8.89 0.350 60.32 40.50 PSB PSB PLB PLB PLB PLB PLB
10.16 0.400 67.78 45.50 PSB PSB - - - - PSB
11.43 0.450 75.96 51.00 PSB PSB PSB PSB PSB PSB PSB
12.57 0.495 72.67 55.50 - PSB PSB PSB PSB PSB PSB
13.84 0.545 90.41 60.70 - - - - PSB PSB PSB
15.11 0.595 97.86 65.70 - - - - PSB PSB PSB
339.70 13-3/8 9.65 0.380 81.18 54.50 PSB PSB - - PSB PSB -
10.92 0.430 90.86 61.00 PSB PSB - - - - -
12.19 0.480 101.29 68.00 PSB PSB PSB PSB PSB PSB -
13.06 0.514 107.24 72.00 - - PSB PSB PSB PSB -
508.00 20 11.13 0.438 139.89 94.00 SLB SLB - - - - -
12.70 0.500 158.49 106.50 SLB SLB - - - - -
16.13 0.635 197.93 133.00 SLB - - - - - -

Notes:1We can also supply non-API casings and couplings according to customers' requirements;
2We can supply premium thread connections according to customers' requirement.
• Technical Parameters of ERW Casing
Outside diameter Wall thickness Nominal weight Steel grade Type of end-finish
mm in mm in kg/m lb/ft
139.70 5-1/2 6.2 0.244 20.83 14.00 J55 / K55 PS
6.98 0.275 23.07 15.50 J55 / K55 PSLB
7.72 0.304 25.30 17.00 J55 / K55 PSLB
168.28 6-5/8 8.94 0.352 35.72 24.00 J55 / K55 PSLB
177.80 7 6.91 0.272 29.76 20.00 J55 / K55 PS
8.05 0.317 34.23 23.00 J55 / K55 PSLB
9.19 0.362 38.69 26.00 J55 / K55 PSLB
219.08 8-5/8 6.71 0.264 35.75 24.00 J55 / K55 PS
7.72 0.304 41.67 28.00 J55 / K55 PS
8.94 0.352 47.66 32.00 J55 / K55 PSLB
10.16 0.400 53.62 36.00 J55 / K55 PSLB
244.48 9-5/8 8.94 0.352 53.57 36.00 J55 / K55 PSLB
10.03 0.395 59.53 40.00 J55 / K55 PSLB
273.05 10-3/4 8.89 0.350 60.32 40.50 J55 / K55 PSB
10.16 0.400 67.78 45.50 J55 / K55 PSB
339.70 13-3/8 8.38 0.330 71.43 48.00 J55 / K55 PSB
9.65 0.380 81.18 54.50 J55 / K55 PSB
10.92 0.430 90.86 61.00 J55 / K55 PSB
12.19 0.480 101.29 68.00 J55 / K55 PSB

Notes:We can also supply non-API ERW casings according to customers' requirements.

• Technical Parameters of Tubing
Outsidediameter Wall thickness Weight Type of end-finish
Non-upsetT&C External upset T&C
mm in mm in kg/m lb/ft kg/m lb/ft J55 L80 N80 C90 Pll0
48.26 1.900 3.68 0.145 4.09 2.75 4.32 2.90 PNU PNU PNU PNU -
5.08 0.200 5.43 3.65 5.55 3.73 PU PU PU PU PU
60.32 2-3/8 4.24 0.167 5.95 4.00 - - PN PN PN PN -
4.83 0.190 6.85 4.60 6.99 4.70 PNU PNU PNU PNU PNU
6.45 0.254 8.63 5.80 8.85 5.95 - PNU PNU PNU PNU
8.53 0.336 10.94 7.35 11.09 7.45 PU - PU PU -
73.02 2-7/8 5.51 0.217 9.52 6.40 9.67 6.50 PNU PNU PNU PNU PNU
7.01 0.276 11.61 7.80 11.76 7.90 - PNU PNU PNU PNU
7.82 0.308 12.8 8.60 12.95 8.70 - PNU PNU PNU PNU
8.64 0.340 13.91 9.35 14.06 9.45 - PU - PU -
11.18 0.440 17.11 11.50 - - N PN - PN -
88.90 3-1/2 5.49 0.216 11.46 7.70 - - PN PN PN PN -
6.45 0.254 13.69 9.20 13.84 9.30 PNU PNU PNU PNU PNU
7.34 0.289 15.19 10.20 - - PN PN PN PN -
9.52 0.375 18.91 12.70 19.27 12.95 - PNU PNU PNU PNU
101.60 4 5.74 0.226 14.14 9.50 - - PN PN PN PN -
6.65 0.262 - - 16.37 11.00 PU PU PU PU -
114.3 4-1/2 6.88 0.271 18.75 12.60 18.97 12.75 PNU PNU PNU PNU -

Notes:We can also supply non-API tubings and couplings according to customers' requirements.
• Part of Production Line of Casing and Tubing



Internal Coating for Casing & Tubing
Generally, the internal coating for casing and tubing is made of optimized epoxy phenolic resin. It has high impact and temperature resistance, perfect edge coverage, extremely high glossiness and flexibility, and excellent adhesion and abrasion resistance. The combination of epoxy and phenolic formulations provides the superior molecular interlinkage, and also the same bend resistance and torque resistance as metal. The internal coating for casing and tubing is suitable for extremely corrosive or high temperature environment, such as chemical treatment wells, high temperature and high pressure corrosive wells. What's more, it can provide the capability of resistance to scale, pitch and paraffin so as to promote flow efficiency.
• Product Type
• Liquid modified epoxy phenolic resin
• Epoxy phenolic resin powder
• Features
• Smooth surface
• Excellent adhesion
• Excellent flexibility
• High acid & alkali proof
• Coating thickness: 125-250 µm
• Visual inspection: no run/pin holes/drops/bubbles
• High temperature resistance: up to 204 °C (400 °F)
• Application
• Casing and tubing of Injection water wells and wasted water wells
• Tubing and line pipe for acidizing
• Strengthened exploitation system and brine treatment system


• Process Flowchart of Internal Coating for Casing and tubing
Page 1 2 3 4 5 6

 

 

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