Patents by Inventor Zupei Zhang

Zupei Zhang 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).

  • Sampling method and sampler for gas hydrates by hole bottom freezing
    Patent number: 8074739
    Abstract: The present invention relates to a sampler for gas hydrates by hole bottom freezing, the sampler comprises a fisher, a wire-line coring mechanism and an outer barrel, and it further comprises a refrigeration portion, a low temperature control portion and a frozen insulation sample portion, which constitute an inner barrel assembly located inside the outer barrel together, wherein a refrigerant in the refrigeration portion is injected into the frozen insulation sample portion under a control of the low temperature control portion, so that a cooling medium in the frozen insulation sample portion is always kept under a predetermined temperature, and a core sample of gas hydrates is frozen at the bottom of a drill hole. The invention also relates to a sampling method using the sampler as mentioned above.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: December 13, 2011
    Assignee: Jilin University
    Inventors: Youhong Sun, Wei Guo, Valery Konstantinovich Chistyakov, Chen Chen, Zupei Zhang, Jun Xue
  • SAMPLING METHOD AND SAMPLER FOR GAS HYDRATES BY HOLE BOTTOM FREEZING
    Publication number: 20090229382
    Abstract: The present invention relates to a sampler for gas hydrates by hole bottom freezing, the sampler comprises a fisher, a wire-line coring mechanism and an outer barrel, and it further comprises a refrigeration portion, a low temperature control portion and a frozen insulation sample portion, which constitute an inner barrel assembly located inside the outer barrel together, wherein a refrigerant in the refrigeration portion is injected into the frozen insulation sample portion under a control of the low temperature control portion, so that a cooling medium in the frozen insulation sample portion is always kept under a predetermined temperature, and a core sample of gas hydrates is frozen at the bottom of a drill hole. The invention also relates to a sampling method using the sampler as mentioned above.
    Type: Application
    Filed: March 12, 2009
    Publication date: September 17, 2009
    Applicant: Jilin University
    Inventors: Youhong Sun, Wei Guo, V. K. Chistyakov, Chen Chen, Zupei Zhang, Jun Xue