D-ring
The plug covers and flange seals of the SIVAR four‑stage compressor both utilize the latest U.S.-developed D‑type sealing rings, which offer the following advantages:
- The D‑ring features a flat bearing surface that fits tightly against the journal, preventing helical torsional shear during operation.
- In the operating state, the D‑ring’s maximum load-bearing surface is located at its center, resulting in low compressive stress on the pump head bore and minimizing the risk of damaging the pump head’s sealing bore.
- No shearing occurs during the installation and removal of D-rings.
- D‑ring seals have a service life five times longer than that of conventional O‑ring seals.
Vernon rubber
The valve rubber produced by Simasaiwa is made from a specially formulated synthetic rubber, capable of meeting the requirements of a wide range of operating conditions. Its key features are as follows:
- Available in a full range of specifications, suitable for use with the entire lineup of cementing and fracturing plunger pumps.
- It has high tensile strength and tear strength.
- Excellent resistance to crushing and low compressive deformation.
- It exhibits excellent static and dynamic sealing performance.
- It exhibits excellent resilience, a low coefficient of friction, superior dry‑friction resistance, good heat and cold resistance, as well as excellent water and oil resistance, and outstanding wear resistance.
- Users can, according to their needs, select split-type valve bodies and valve rubber seals, or opt for vulcanized integral valve assemblies.
Technical Specifications | |||||
Shore hardness | Tensile strength at a given elongation (MPa) | Tensile strength | Elongation rate | Tear strength | |
50% | 100% | ||||
90-95 | ≥6.00 | ≥8 | ≥40.00 | ≥500 | ≥120 |
Roots
Sijisaiwa has its own rubber department, staffed by dedicated rubber design and process engineers, enabling it to independently produce and manufacture packing‑type rubber components. Its key features are as follows:
- Available in a full range of specifications, suitable for use with the entire line of cementing and fracturing plunger pumps.
- The filler exhibits excellent self-lubricating properties, a low coefficient of friction, and a long service life.
- It possesses sufficient chemical stability, does not contaminate the process medium, prevents the packing from swelling in the medium, ensures that the impregnant within the packing is not dissolved by the medium, and does not cause corrosion of the sealing surfaces.
Technical Specifications | |||||
Shore hardness (A ) | 50% modulus at break (MPa) | Tensile strength (MPa) | Elongation | Tensile strength (MPa) | Characteristics |
87-96 | ≥10.0 | ≥21.0 | ≥80 | ≥25 | Self-lubricity |
Verity
The valve bodies of Sijisaiwa’s plunger pumps exhibit excellent fatigue resistance and impact durability, making them suitable for most fracturing pumps used in the oilfield market. For valve bodies of the same size, two material options are available: alloy steel and stainless steel.
- Available in a full range of specifications and sizes, suitable for the entire lineup of cementing and fracturing plunger pumps.
- The alloy steel valve body undergoes a rigorous and well‑designed heat‑treatment process, resulting in a high surface hardness combined with excellent core toughness, thereby providing superior fatigue resistance and impact resistance, and ensuring tight mating with the valve rubber lining.
- Stainless steel valve bodies feature a dense microstructure and are manufactured using advanced processing techniques, offering excellent resistance to temperature, pressure, and corrosion.
Verdana New Technology
- Manufactured via integral die forging from high-strength alloy steel.
- Employing advanced processing techniques, it achieves high surface hardness and excellent wear resistance.
Plunger
Sijisaiwa can supply plungers in various models and sizes to meet customer requirements, suitable for the vast majority of downhole plunger pumps on the market. Available plunger options include alloy‑coated plungers and tungsten carbide‑coated plungers.
Nickel-based alloy-coated plunger
- Employing advanced surface treatment technology, the alloy layer achieves a hardness of up to HRC62, offering excellent wear resistance and a long service life.
- It is widely used in oilfield cementing and fracturing plunger pumps, significantly enhancing the reliability and service life of these pumps.
Tungsten Carbide-Coated Plunger
- The tungsten carbide coating is applied using an advanced HVOF spraying process, resulting in a surface layer with exceptional hardness.
- The hardness of tungsten carbide coatings can exceed HRC 67, approaching that of diamond, and they exhibit exceptional wear resistance. Under high‑load and high‑stroke conditions, these coatings significantly reduce wear, extend service life, and are well suited to extremely severe wear‑resistant applications.
New Plunger Technology
Tungsten carbide‑coated plungers are manufactured using an advanced HVOF process, resulting in a surface coating with exceptional hardness that delivers outstanding wear resistance and an exceptionally long service life.
Characteristics of the coating:
Wear-resistant coating: its hardness is second only to that of diamond.
Corrosion-resistant coating: Provides excellent protection against corrosive environments such as hydrogen sulfide and saturated brine.
Technical Specifications | |||
| Comparison content | Common Ni60 coating plunger | SJS Tungsten Carbide Plunger |
1 | Matrix material | 42Cr | 42CrMo |
2 | Coating material | Ni60 powder | Tungsten carbide |
3 | Spraying process | Flame spraying | HVOF Supersonic Flame Spraying |
4 | Surface hardness | HRC58-62 | > 900HV(>HRC67) |
5 | Matrix hardness | HRC28-32 | HRC28-32 |
6 | Surface roughness | Ra0.2 - Ra0.4 | Ra 0.4 |
7 | Bonding strength | >50Mpa | |
8 | Service life | Compared with ordinary alloy steel, the plunger’s performance is improved by 30%. | 50% higher than standard alloy steel plungers. |
9 | Application | Cementing pump, fracturing pump | Cementing pump, fracturing pump |
Wear Parts Selection List
Pump manufacturer | SJS pump model | Plunger size | Plunger | Roots | Verity | Vernon rubber | Vernier seat |
Halliburton:HT400 | TPH400 | 3.375” | P40-33-533 | P8A0009337 | P40-40-107 | P40-40-108 | P40-40-109 |
4" | P40-40-533 | P8A0009400 | |||||
4.5 inches | P40-44-533 | P8A0009450 | P40-44-107 | P40-44-108 | P40-44-109 | ||
5" | P40-50-533 | P8A0009500 | P40-60-107 | P40-60-108 | P40-60-109 | ||
6 inches | P40-60-533 | P8T0009600 | |||||
SPM: TWS600S/1000S | TPB/D/E600 | 2.75” | P60-27-006 | P62-27-500 | P60-30-602 | P60-30-601 | P60-30-008 |
3 inches | P60-30-006 | P8A0005300 | |||||
3.5 inches | P60-34-006 | P8A0005350 | P60-34-602 | P60-34-601 | P60-34-008 | ||
4 inches | P60-40-006 | P8A0005400 | |||||
4.5 inches | P60-44-006 | P8A0005450 | |||||
Fourth Machinery Branch: 2250/2500/2800 | Fracturing pump 2250/ | 3.75” | P25-37-016 | P25-37-039 | P06-94-055 | P06-94-004 | P25-40-006 |
4 inches | P25-40-003 | P8A0011400 | |||||
4.5 inches | P06-66-016 | P8A0011451 | P06-97-035 | P06-97-004 | P25-45-007 | ||
5" | P06-98-015 | P8A0011500 | |||||
5.5 | P06-95-015 | P06-93-571 | P06-95-005 | P06-95-004 | P06-95-003 | ||
6" | P06-91-017 | P06-91-571 |