The field coupon tests indicated that the Jurassic oil well pipe in the oil field of PetroChina Changqing Oil Field Company suffered from severe internal corrosion,especially the pit corrosion.

• 通过现场腐蚀挂片试验,发现中国石油天然气股份有限公司长庆油田分公司某油田开采侏罗系油井管柱遭受严重的内腐蚀,以点蚀为主要破坏形式。