Well Pengzhou 3-5D, Sinopec Southwest’s 7 339 m flagship in the Western Sichuan Gas Field, demanded a 140 MPa HH PR2F PSL4 tree.

Our unit—one of the first home-grown, high-pressure/H₂S trees in China—passed the test, delivering corrosion-proof, zero-leak service under extreme bottom-hole conditions and proving domestic ultra-H₂S technology is field-ready.

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