Patents by Inventor Cunyao ZHAO

Cunyao ZHAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High-strength and high-toughness perforating gun tube and manufacturing method therefor
    Patent number: 11459643
    Abstract: A high-strength and high-toughness tube for perforating gun, having a formulation of chemical elements in percentage by mass as follows: C: 0.15%-0.22%, Si: 0.1%-0.4%, Mn: 0.5%-1%, Cr: 0.3%-0.7%, Mo: 0.3%-0.7%, Nb: 0.01%-0.04%, V: 0.1%-0.2%, Ti: 0.02%-0.05%, B: 0.0015%-0.005%, Al: 0.01%-0.05%, Ca: 0.001%-0.004%, N?0.008%, and the balance of Fe and other inevitable impurities. Accordingly, further disclosed is a method for manufacturing a high-strength and high-toughness tube for perforating gun. The high-strength and high-toughness tube for perforating gun of the present invention has high strength, good toughness and uniform circumferential strength, and is suitable for application in the field of petroleum exploration and exploitation.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: October 4, 2022
    Assignee: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xiaoming Dong, Zhonghua Zhang, Cunyao Zhao
  • HIGH-STRENGTH AND HIGH-TOUGHNESS PERFORATING GUN TUBE AND MANUFACTURING METHOD THEREFOR
    Publication number: 20190316234
    Abstract: A high-strength and high-toughness tube for perforating gun, having a formulation of chemical elements in percentage by mass as follows: C: 0.15%-0.22%, Si: 0.1%-0.4%, Mn: 0.5%-1%, Cr: 0.3%-0.7%, Mo: 0.3%-0.7%, Nb: 0.01%-0.04%, V: 0.1%-0.2%, Ti: 0.02%-0.05%, B: 0.0015%-0.005%, Al: 0.01%-0.05%, Ca: 0.001%-0.004%, N?0.008%, and the balance of Fe and other inevitable impurities. Accordingly, further disclosed is a method for manufacturing a high-strength and high-toughness tube for perforating gun. The high-strength and high-toughness tube for perforating gun of the present invention has high strength, good toughness and uniform circumferential strength, and is suitable for application in the field of petroleum exploration and exploitation.
    Type: Application
    Filed: November 29, 2017
    Publication date: October 17, 2019
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xiaoming DONG, Zhonghua ZHANG, Cunyao ZHAO