Cooperation Background:

CNPC is China’s giant oil & gas enterprise, covering onshore oilfields, gathering and transportation pipelines, oil refining and production equipment. Its wellhead and process equipment faces downhole high temperature, high pressure, hydrogen sulfide, crude oil and slurry erosion. Reliable corrosion-resistant sealing products are urgently needed. The original sealing solutions frequently failed under harsh media, so CNPC cooperates with Guohao Seals for OEM and ODM sealing development.

1. Downhole working conditions are extreme: high temperature, high pressure, hydrogen sulfide corrosion and sand wear, requiring seals with resistance to rapid gas decompression;

2. Downhole maintenance is difficult, long service life is required to avoid leakage safety hazards;

3. A large number of non-standard wellhead structures require customized seal dimensions and material formulas.

Guohao Seals Services (OEM + ODM):

1. OEM Production: Mass produce CNPC-specified FFKM O-rings, high-pressure combined Glyd rings and spring energized seals;

2. ODM Customization: Adjust polymer formulations for crude oil and corrosive gas media, develop anti-extrusion sealing assemblies to solve corrosion damage and pressure leakage of downhole seals;

3. Rapid OEM Delivery: Complete sample verification for wellhead tests, arrange batch production, provide seal selection guidance and on-site maintenance services.

Cooperation Achievement:

Cumulatively supplied more than 2.7 million sets of special oil and gas seals, widely deployed in domestic onshore oilfield projects. The service cycle of sealing parts is greatly extended, hazardous medium leakage risks are reduced. Guohao Seals has become an important customized sealing supplier for CNPC.