API Spec 5ct M65 Casing Tube

API Spec 5ct M65 Casing Tube

Oil Country Tubular Goods Special pipe for petroleum,
including finished oil casing,
drill pipe, drill collar, hoop, short joint, etc.
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Product Details

API spec 5ct M65 Casing Tube

Oil Country Tubular Goods Special pipe for petroleum, including finished oil casing, drill pipe, drill collar, hoop, short joint, etc.

Good mechanical properties at high temperature: 300 ℃ ~ 350 °C

Application in 1000 ~ 1500 m Deep well Environment

Good flaring performance: inner pipe thickening end flares without wrinkle, no cracks,

Good weldability: Ceq < 0.6, no welding crack, good microstructure after welding, Δ HRC < = 5
High dimensional accuracy: dmax-dmin < = 2. 5 mm.

Thickened end diameter Φ 81 positive and ±1mm length

Oil Country Tubular Goods Special pipe for petroleum, including finished oil casing, drill pipe, drill collar, hoop, short joint, etc.

Tubing: pipe used in oil wells for oil recovery, gas recovery, water injection, and acidizing fracturing.

Casing: pipe that has been drilled down from the surface of the ground as a lining to prevent the wellbore from collapsing.

Drill pipe: pipe used for drilling holes.

Coupling: a cylinder with internal threads connecting two threaded tubes.

Hoop material: pipe used in the manufacture of hoops.

Special buckle: non-API thread fastener with special sealing, connection and other properties.

Failure: loss of function due to deformation, fracture, and surface damage under specific service conditions. The main failure forms of oil casing are: squeezing, slipping, cracking, leakage, corrosion, bonding, wear and so on.

API 5CT: specification for casing and tubing

Petroleum pipe chemical composition:

Steel grade

yield strength (MPA)

 tensile strength (MPA)

hardness(MAX)


min

max

min

HRC

HBW

J55

379

552

517



K55

379

552

655



N80

552

758

689



M65

448

586

586

22

235

L80

552

655

655

23

241

C90

621

724

689

25.4

255

T95

655

758

724

25.4

255

P110

758

965

862



Q125

862

1034

931



R95

655

758

724



C110

758

828

793

30

286


length:


scope R1

scope R2

scope R3

oil pipe

6.1-7.32

8.53-9.75

11.58-12.80

drivepipe

4.88-7.62

7.62-10.36

10.36-14.63

short piece

0.5-6

Oil pipe detail diagram

图片1

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