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Sucker Rod
● Standard: API Spec 11B
● Rod type: Sucker rod, Pony rod
● API Grade: C, K, D( D carbon, D Alloy, D special)
● Material: AISI A-4130-M, A-4140-M,A-4142-M, A-4330-M, A-4138-M etc
● Coupling Grade: T, SM
Description
The Sucker Rod is an important component of beam-pumping oil production equipment. its function is to connect the pumping unit at the top and the downhole oil pump at the bottom, transmitting power. The body is a solid rod piece made of round steel, with enlarged forged heads at both ends, featuring connecting threads and rectangular wrench flats at the top. Two products are connected by couplings between their external threads. Ordinary couplings are used to connect rods of the same diameter, while special reducing couplings are used for those with varying diameters. The string consists of the surface rod, known as the polished rod, and the downhole rod assembly. The topmost component is called the polished rod which, fitting with the stuffing box, serves to seal the wellhead.
Vigor--Your best partner in the oil and gas industry
Vigor's sucker rod is produced using standards such as API Specification 11B, the latest edition, and AISI Steel Products. However, in actual production and quality control, Vigor adopts industry standards higher than API standards. All rods are manufactured from high-quality steel bars that pass magnetic particle testing and straightening. During the forging process, its ends are heated in induction furnaces to ensure optimal fatigue resistance of the forged zone. Vigor will introduce in detail the types, API grade, materials, couplings, and technical specifications of our products.
They are long steel rods used to drive the pump in an oil well, pulling the oil or gas from the reservoir to the surface.
(1) Characteristics: it is made of carbon steel or alloy steel and is designed to withstand the corrosive and abrasive conditions in the well. They are available in standard lengths and diameters and must be selected based on the well's depth and the type of fluid being produced.
(2) Features: it is connected to the pump via a coupling or a thread, and is designed to be flexible to absorb the loads and stresses in the well. They are typically made of a schedule 40 or 80 pipe, which provides a high strength-to-weight ratio and is resistant to corrosion.
Pony Rods
They are shorter rods used to connect the rod and the pump in an oil well, or to adjust its length in a well.
(1) Characteristics: Pony rods are designed to withstand the same corrosive and abrasive conditions. They are available in standard lengths and diameters and must be selected based on the well's depth and the type of fluid being produced.
(2) Features: Pony rods are designed to be adjustable and can be inserted or removed from the rod to adjust the length of the rod. They can also be used to connect multiple rods and used in oil wells to adjust their length and to connect multiple rods.
C, D, and K grade is designed and manufactured according to the API Spec 11B specification of the American Petroleum Institute, while also conforming to the Chinese industry standard SY/T5029.
(1) Grade C is made of high-quality carbon steel or manganese steel, such as C-Mn steel, with a tensile strength of 620-794 MPa. it has moderate strength, good plasticity, and relatively good corrosion resistance, making it suitable for use in weakly acidic environments without causing sulfide stress cracking.
(2) Grade D is made of carbon steel or alloy steel, such as Cr-Mo steel rods, with a tensile strength of up to 794-965 MPa. After heat treatment, it has high strength, good plasticity, and long service life, which is suitable for use in deeper wells with no or only slight corrosion.
(3) Grade K is made of high-nickel quality alloy steel, such as NC-Mo or Ni-Cr steel rods, with a tensile strength of 588-794 MPa. It also has moderate strength, good plasticity, and relatively good corrosion resistance, making it suitable for use in acidic environments.
Material:
AISI A-4130-M, A-4140-M,A-4142-M, A-4330-M, A-4138-M etc;
Couplings (Class T and SM)
(1) Class T couplings are normal strength couplings, mainly used for mild pumping conditions. They have a minimum yield strength of 75,000 psi (approx. 515 MPa).
(2) Class SM couplings are high-strength couplings, primarily used for harsh pumping conditions. They have a much higher minimum yield strength of 135,000 psi (approx. 930 MPa).
Technical Specification
| Type | 75 | 78 | 90 | 96 | 97 |
| AISI Series | A-4330-M | A-4142-M | A-4320-M | A-4138-M | A-4330-M |
| API Grade | D Special | D Alloy | D Special | Special | Special |
| Aluminum | 0.035 Max. | 0.035 Max. | 0.035 Max. | 0.035 Max. | 0.035 Max. |
| Carbon | 0.3/0.34 | 0.38/0.45 | 0.18/0.24 | 0.36/0.45 | 0.28/0.35 |
| Chromium | 0.8/1.0 | 0.8/1.1 | 0.7/0.9 | 0.52/0.88 | 0.7/1.0 |
| Columbium (Niobium) | - | - | - | 0.02/0.045 | - |
| Copper | 0.35 Max. | 0.35 Max. | 0.35 Max. | 0.35 Max. | 0.35 Max. |
| Manganese | 0.8/1.0 | 0.8/1.0 | 0.8/1.0 | 0.88/1.52 | 0.7/1.0 |
| Molybdenum | 0.2/0.3 | 0.15/0.25 | 0.2/0.3 | 0.25/0.35 | 0.2/0.3 |
| Nickel | 1.65/2.0 | 0.45 Max. | 1.15/1.5 | 0.3 Max. | 1.65/2.0 |
| Phosphorus | 0.035 Max. | 0.035 Max. | 0.025 Max. | 0.035 Max. | 0.035 Max. |
| Silicon | 0.15/0.35 | 0.15/0.35 | 0.15/0.35 | 0.2/0.35 | 0.15/0.35 |
| Sulfur | 0.04 Max. | 0.035 Max. | 0.025 Max. | 0.04 Max. | 0.04 Max. |
| Vanadium | 0.04/0.09 | 0.02/0.07 | 0.04/0.09 | 0.04/0.09 | 0.04/0.09 |
Machanical Properties(after normalized and tempered)
|
Tensile Strength Ksi(Mpa) |
125/140 (861/965) |
120/140 (827/965) |
120/140 (827/965) |
140/150 (965/1034) |
140/150 (965/1034) |
|
Min. Yield Strength Ksi(Mpa) |
100(689) |
95(655) |
95(655) |
115(792) |
115(792) |
|
Min. elongation,8in,% |
10 |
10 |
10 |
10 |
10 |
|
Min. Reduction of Area % |
45 |
45 |
45 |
45 |
45 |
※ The above table shows common using material. If special request, please contact us for checking.
Technical Parameters
|
Size (In.) |
Rod O.D. (In.) |
Shoulder O.D. (mm) |
Thread O.D. (In.) |
Length of thread (mm) |
Sucker Rod length(ft) |
Pony Rod length(ft) |
|
8/5 |
8/5 |
31.75 |
15/16 |
31.75 |
25,30 |
2,4,6,8,10 |
|
8/5 |
8/5 |
31.75 |
15/16 |
31.75 |
||
|
3/4 |
3/4 |
38.10 |
1-1/16 |
36.51 |
||
|
7/8 |
7/8 |
41.28 |
1-3/16 |
41.28 |
||
|
1 |
1 |
50.80 |
1-3/8 |
47.63 |
||
|
1-1/8 |
1-1/8 |
57.15 |
1-9/16 |
53.98 |
Material and mechanical properties of Rod Coupling
- Chemical Composition
|
Steel |
C(%) |
Mn(%) |
Si(%) |
Cr(%) |
S(%) |
P(%) |
Cu(%) |
|
AISI 1045 |
0.42~0.50 |
0.50~0.80 |
0.17~0.37 |
≤0.25 |
≤0.04 |
≤0.04 |
≤0.02 |
|
AISI 5140 |
0.37~0.45 |
0.50~0.8 |
0.20~0.40 |
0.80~1.10 |
≤0.04 |
≤0.04 |
≤0.02 |
- Main mechanical properties
|
Coupling Grade |
Hardness |
Min.Tensile Strength,Ksi(Mpa) |
Thickness of Spray Metal Layer |
Surface Roughness |
|
T |
56HRA~62HRA |
95(655) |
/ |
Ra≤3.175μm |
|
SM |
Base Hardness: 56HRA~62HRA Surface hardness: ≥595HV200 |
/ |
0.25~0.51 |
Ra≤1.587μm |
applications
(1)Connecting the surface pumping unit to the downhole oil pump, transmitting power to drive the pump and lift the produced liquids;
(2)Acting as the polish rod, moving up and down in tandem with the pump to enable the pumping process;
(3)Simultaneously sealing off the oil well bore.
FAQ
Q: Can you provide information about the corrosion resistance and mechanical properties of your rods?
Q: Can you provide data on the tensile strength and yield strength of your rods?
Q: Do you offer rods with different thread types to accommodate various subsurface equipment?
Delivered Products
Are you in search of a reliable partner to supply high-quality Sucker Rods? Look no further! As a leading manufacturer in the oil and gas industry, Vigor is excited to introduce our products to you. With years of experience and a commitment to excellence, we can offer you the best value.
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