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Tongao testing has the exclusive patent of oil and casing gas seal detection technology. It is China's absolutely leading gas seal detection technology service company, and is the initiator and leader of gas seal detection technology in China's oil and gas industry.

technical feature

·  Airtight effectiveness at 120 MPa.

·  More accurate to quantitatively describe the air tightness with the permeation rate of small molecular helium.

·  Fast inspection speed of 1.5 min per point.

·  More reliable to inspect both factory end and field connection end of the pipe coupling.

product catalog


key projects and customers

·  Several domestic gas storage testing projects, Tarim gas well testing projects, Fuling, Nanchuan shale gas projects, Shenhua CBM testing projects