Patents by Inventor Yuhan Xia

Yuhan Xia 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).

  • Publication number: 20240093599
    Abstract: A lost circulation detection device includes a first detection member and a second detection member, a first signal transmitter and a first signal receiver are disposed on the first detection member, and the first signal transmitter transmits a signal along an axial direction of a rockshaft so that the first signal receiver acquires data information of drilling fluid in the axial direction of the rockshaft; a fluid channel penetrating through the second detection member is disposed in the second detection member, and the fluid channel is configurable to be in communication with the rockshaft; a second signal transmitter and a second signal receiver are disposed oppositely on two sides of the fluid channel, and the second signal transmitter transmits a signal along a center line of a second accommodating groove, so that the second signal receiver acquires data information of drilling fluid in a circumferential direction of the rockshaft.
    Type: Application
    Filed: November 28, 2023
    Publication date: March 21, 2024
    Applicants: PetroChina Company Limited, CNPC Engineering Technology R&D Company Limited
    Inventors: Guangjie YUAN, Jingcui LI, Yan XIA, Jifang WAN, Gentai JIN, Guotao LI, Hong ZHANG, Tianen LIU, Pan FU, Yuhan PANG
  • Publication number: 20200140764
    Abstract: A de-asphalting system for solvent de-asphalting including a desasphalter and a controller. The deasphalter defines a contacting zone and a separation zone. The contact zone contacts a feed, including asphaltenes, and a solvent to form a mixture, where the contacting of the feed and the solvent causes at least a portion of the asphaltenes to precipitate out of the mixture. The contacting is disposed at an operating temperature. The separation zone separates the mixture into a de-asphalted oil-comprising material fraction (“S+PDAO”) and a asphaltene-rich material fraction. The asphaltene-rich material fraction includes the precipitated asphaltenes. The controller controls at least one operating parameter of the deasphalter based on at least on a refractive index of the S+PDAO phase.
    Type: Application
    Filed: September 21, 2017
    Publication date: May 7, 2020
    Applicant: CNOOC PETROLEUM NORTH AMERICA ULC
    Inventors: Nestor Gregorio ZERPA, Yuhan XIA, Milan TODOROVIC
  • Publication number: 20170152451
    Abstract: There is provided a process for upgrading a hydrocarbon material. The process includes: (a) treating a hydrocarbon material-comprising feed, wherein the treating includes cracking a hydrocarbon material-comprising feed, such that an upgraded intermediate is produced; and (b) in the absence, or the substantial absence, of adscititious diatomic hydrogen, reducing the content of olefinic material within at least a fraction of the upgraded intermediate such that an olefinic material content-reduced product is produced.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 1, 2017
    Inventors: Nestor Gregorio ZERPA REQUES, Arno DE CLERK, Yuhan XIA, Ayyub Abduljawad OMER
  • Patent number: 9650578
    Abstract: A process for upgrading oil including optionally pre-treating a heavy oil including at least one dissolved gas, asphaltenes, water, and mineral solids; reducing at least one dissolved gas content from said heavy oil, optionally further reducing water content from said heavy oil; adding a paraffinic solvent to said heavy oil, at a predetermined paraffinic solvent:heavy oil ratio, facilitating separation of asphaltenes, water, and mineral solids from the heavy oil resulting in a de-asphalted or partially de-asphalted oil (“DAO”)-paraffinic solvent stream, comprising a low asphaltenes content DAO-paraffinic solvent stream and an asphaltenes-mineral solids-paraffinic solvent-water slurry stream; optionally separating the paraffinic solvent and water from the asphaltenes-mineral solids-paraffinic solvent-water slurry stream; optionally separating the DAO-paraffinic solvent stream into a paraffinic solvent rich stream and a DAO stream; and optionally adding diluent to the DAO stream resulting in transportable oil.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: May 16, 2017
    Assignee: NEXEN ENERGY ULC
    Inventors: Amo De Klerk, Nestor Gregorio Zerpa Reques, Yuhan Xia, Ayyub Abduljawad Omer
  • Publication number: 20140138287
    Abstract: A process for upgrading oil including optionally pre-treating a heavy oil including at least one dissolved gas, asphaltenes, water, and mineral solids; reducing at least one dissolved gas content from said heavy oil, optionally further reducing water content from said heavy oil; adding a paraffinic solvent to said heavy oil, at a predetermined paraffinic solvent:heavy oil ratio, facilitating separation of asphaltenes, water, and mineral solids from the heavy oil resulting in a de-asphalted or partially de-asphalted oil (“DAO”)-paraffinic solvent stream, comprising a low asphaltenes content DAO-paraffinic solvent stream and an asphaltenes-mineral solids-paraffinic solvent-water slurry stream; optionally separating the paraffinic solvent and water from the asphaltenes-mineral solids-paraffinic solvent-water slurry stream; optionally separating the DAO-paraffinic solvent stream into a paraffinic solvent rich stream and a DAO stream; and optionally adding diluent to the DAO stream resulting in transportable oil.
    Type: Application
    Filed: December 19, 2013
    Publication date: May 22, 2014
    Applicant: NEXEN ENERGY ULC
    Inventors: Arno De Klerk, Nestor Gregorio Zerpa Reques, Yuhan Xia, Ayyub Abduljawad Omer