OCTG OIL CASING PIPE Petroleum Casing pipe

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What is Oil well casing Pipe

Petroleum OCTG Oil Casing Pipe  are steel pipes used to support the walls of oil and gas wells to ensure the normal operation of the entire oil well after drilling and completion. Each well uses several layers of casing according to different drilling depths and geological conditions. Cement is used to cement the casing after the casing is down. It is different from the Tubing and drill pipe and cannot be reused. It is a one-time consumable Material. Therefore, OCTG Oil Casing Pipe consumption accounts for more than 70% of all oil well pipes.

What are the functions of OCTG OIL CASING

OCTG Oil Casing Pipe is mainly used for the drilling of oil and gas wells and the transportation of oil and gas. It includes oil drill pipe, oil casing, and oil pumping pipe. Oil drill pipes are mainly used to connect drill collars and drill bits and transmit drilling power. Petroleum casing is mainly used to support the well wall during drilling and after completion to ensure the progress of the drilling process and the normal operation of the entire well after completion. The pumping pipe mainly transports the oil and gas at the bottom of the oil well to the ground.

Steel grade of OCTG OIL CASING

Steel grade of OCTG Oil Casing Pipe : H40, J55 K55 N80 L80 C90 T95 P110 Q125, V150 Wait.

What are the types of OCTG OIL CASING

  • Conductor Casing.

  • Surface Casing.

  • Intermediate Casing.

  • Production Casing.

  • Liner tieback casing.

Difference between OCTG OIL CASING and tubing

Tubing and OCTG Oil Casing Pipe are indispensable pipe tools in oil production. Tubing is a pipe that runs into the casing of an oil well during normal production. In a blowout well, the oil flow flows into the ground through the tubing and enters the gathering and transportation process. OCTG Oil Casing Pipe is a pipe that is run downhole after drilling. The casing and well wall are sealed with cement, and then a perforating gun is used to perforate the target layer to make oil flow through the rock formation, cement ring, and casing into the well Bottom, then enter the tubing to the ground.

Oil Drill Pipes Differences between OCTG OIL CASING

1. The purpose is different; 2. The material is different. Petroleum drill pipe: used for oil well drilling. Drill pipes are characterized by thin walls and light Weight per unit Length. They mainly provide mud channels and transmit tension and torque. (There is also a kind of oil drill stand: Wall thickness, heavy weight per unit length, mainly to provide mud channels, transfer tension and torque, and provide drilling pressure for the bit.)

Oil Tubing Difference between oil drill pipe

Petroleum drill pipe: used for oil well drilling. Drill pipes are characterized by thin walls and light weight per unit length. They mainly provide mud channels and transmit tension and torque. Tubing is a pipe that runs into the OCTG Oil Casing Pipe of an oil well during normal production. In a blowout well, the oil flow flows into the ground through the tubing and enters the gathering and transportation process.

OCTG Oil Casing Pipe Size Specification Sheet

Dimensions and Masses for Standard Casing and for Casing Threaded with  API Round Thread and Buttress Thread

 

Labels a     Outside Diameter   Nominal Linear Mass T& C b,c   Wall Thick- ness     Inside Diameter     Drift Diameter Calculated Mass c
  Plain- end em, Mass Gain or Loss Due to End Finishing
kg
Round Thread Buttress Thread
  D mm   kg/m   t mm   D mm   mm wpe kg/m   Short   Long   RC   SCC
1 2 3 4 5 6 7 8 9 10 11 12
4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 9.50 10.50 11.60 13.50 15.10 114.30 114.30 114.30 114.30 114.30 14.38 15.73 17.38 19.87 22.69 5.21 5.69 6.35 7.37 8.56 103.88 102.92 101.60 99.56 97.18 100.70 99.74 98.42 96.38 94.00 14.02 15.24 16.91 19.44 22.32 3.64 3.33 3.18 — — — — 3.61 3.35 3.53 — 4.53 4.32 4.07 3.64 — 1.12 0.91 0.60 0.24
5 5 5 5 5 5 5 11.50 13.00 15.00 18.00 21.40 23.20 24.10 127.00 127.00 127.00 127.00 127.00 127.00 127.00 17.19 19.69 22.69 27.19 32.13 34.76 36.15 5.59 6.43 7.52 9.19 11.10 12.14 12.70 115.82 114.14 111.96 108.62 104.80 102.72 101.60 112.64 110.96 108.78 105.44 101.62 99.54 98.42 16.74 19.12 22.16 26.70 31.73 34.39 35.80 4.32 4.00 3.71 — — — — — 4.85 4.51 4.52 3.45 3.15 2.99 — 5.38 4.99 4.40 3.76 3.42 3.23 — 1.24 0.61 0.22 –0.62 –0.96 –1.14
5 1/2 5 1/2 5 1/2 5 1/2 5 1/2 5 1/2 5 1/2 5 1/2 5 1/2 5 1/2 5 1/2 5 1/2 14.00 15.50 17.00 20.00 23.00 26.80 29.70 32.60 35.30 38.00 40.50 43.10 139.70 139.70 139.70 139.70 139.70 139.70 139.70 139.70 139.70 139.70 139.70 139.70 20.91 23.48 25.72 30.05 34.05 40.15 44.47 48.74 52.80 56.82 60.64 64.41 6.20 6.98 7.72 9.17 10.54 12.70 14.27 15.88 17.45 19.05 20.62 22.22 127.30 125.74 124.26 121.36 118.62 114.30 111.16 107.94 104.80 101.60 98.46 95.26 124.12 122.56 121.08 118.18 115.44 111.12 107.98 104.76 101.62 98.42 95.28 92.08 20.41 22.85 25.13 29.52 33.57 39.78 44.14 48.49 52.61 56.68 60.55 64.38 4.60 4.36 4.14 — — — — — — — — — — 5.26 5.31 4.50 4.37 — — — — — — — — 5.71 5.41 4.84 4.31 — — — — — — — — 0.87 0.58 0.45 -0.52 — — — — — — —
6 5/8 6 5/8 6 5/8 6 5/8 20.00 24.00 28.00 32.00 168.28 168.28 168.28 168.28 29.76 35.72 41.67 47.62 7.32 8.94 10.59 12.06 153.64 150.40 147.10 144.16 150.46 147.22 143.92 140.98 29.06 35.13 41.18 46.46 5.58 4.42 — — 6.23 5.48 4.73 4.73 6.35 5.52 4.71 4.00 0.89 0.68 –0.75 –1.46