Patents by Inventor Chengli Dong

Chengli Dong 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: 20220307706
    Abstract: Disclosed are a motor support (1) and a dehumidifier (100) having the same. The motor support (1) includes: a support body (11); and a mounting rack (12) hung below the support body (11) by a connection member (13) and configured to mount a motor.
    Type: Application
    Filed: December 21, 2020
    Publication date: September 29, 2022
    Inventors: Wenjun SHEN, Zhigang XING, Yu LIU, Zhisheng LEI, Kangwen ZHANG, Yuhang TANG, Peili DONG, Chengli YANG
  • Patent number: 9416647
    Abstract: A methodology performs downhole fluid analysis at multiple measurement stations within a wellbore traversing a reservoir to determine gradients of compositional components and other fluid properties. A model is used to predict concentrations of a plurality of high molecular weight solute part class-types at varying reservoir locations. Such predictions are compared against downhole measurements to identify the best matching solute part class-type. If the best-matching class type corresponds to at least one predetermined asphaltene component, phase stability of asphaltene in the reservoir fluid at a given depth is evaluated using equilibrium criteria involving an oil rich phase and an asphaltene rich phase of respective components of the reservoir fluid at the given depth. The result of the evaluation of asphaltene rich phase stability is used for reservoir analysis.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: August 16, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Youxiang Zuo, Oliver C. Mullins, Chengli Dong, Dingan Zhang, ChengGang Xian
  • Patent number: 9366776
    Abstract: Integrated formation modeling systems and methods are described. An example method of performing seismic analysis of a subterranean formation includes obtaining seismic data of the formation, obtaining fluid from the formation and analyzing at least some of the fluid to determine a fluid parameter. The example method additionally includes generating a model of the formation based at least on the seismic data and modifying the model based on the fluid parameter.
    Type: Grant
    Filed: November 13, 2011
    Date of Patent: June 14, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: ChengGang Xian, Chengli Dong, Oliver C. Mullins, Ricardo R. Vasques
  • Patent number: 8996346
    Abstract: An improved method that performs downhole fluid analysis of the fluid properties of a reservoir of interest and that characterizes the reservoir of interest based upon such downhole fluid analysis.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: March 31, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Julian Youxiang Zuo, Denise Freed, Chengli Dong, Andrew E. Pomerantz, Vinay K. Mishra, Oliver C. Mullins
  • Patent number: 8717549
    Abstract: Methods and apparatus for detecting a coating on a downhole fluid sensor are disclosed. A coating may refer to a solid or liquid film on a sensor interface with the sampled fluid, caused by contaminants. Detecting a coating may be accomplished by determining a sampled fluid type and measuring at least one fluid parameter using one or more downhole fluid sensors. The coating detection further includes determining whether the measured parameters are within ranges corresponding to the determined fluid type. Additionally or alternatively, measured parameter values that remain substantially stable during sampled fluid pumping may also indicate a coated sensor.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: May 6, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Chengli Dong, Peter S. Hegeman
  • Patent number: 8555696
    Abstract: Methods of calibrating a fluid analyzer for use in a wellbore are described. An example method of generating calibration data for a fluid analyzer for use in a downhole tool involves lowering a downhole tool including a fluid analyzer to a location in a wellbore, measuring, via the fluid analyzer, a characteristic value of a calibration fluid or a vacuum while the fluid analyzer is at the location, obtaining an expected characteristic value for the calibration fluid or the vacuum at the location, and comparing the measured characteristic value to the expected characteristic value to generate a calibration value for the fluid.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: October 15, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Chengli Dong, Ricardo R. Vasques, Michael O'Keefe, Peter S. Hegeman, Oliver C. Mullins, Go Fujisawa, Stephane Vannuffelen, Richard Jackson, Ahmad Saputra
  • Patent number: 8528396
    Abstract: Example methods and apparatus to detect phase separation in downhole fluid sampling operations are disclosed. An example method to detect a phase separation condition of a fluid from a subterranean involves obtaining a sample of the fluid, measuring a first characteristic value of the sample, measuring a second characteristic value of the sample and comparing the first characteristic value to a first reference value associated with a single-phase condition of the fluid to generate a corresponding first comparison result. The example method then compares the second characteristic value to a second reference value associated with the single-phase condition of the fluid to generate a corresponding second comparison result and detects the phase separation condition of the fluid based on the first and second comparison results.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: September 10, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Xu Wu, Tsutomu Yamate, Toru Terabayashi, Ricardo Vasques, Chengli Dong, Peter S. Hegeman
  • Publication number: 20130112406
    Abstract: A methodology for reservoir understanding that performs investigation of asphaltene instability as a function of location in a reservoir of interest. In the preferred embodiment, results derived as part of the investigation of asphaltene instability are used as a workflow decision point for selectively performing additional analysis of reservoir fluids. The additional analysis of reservoir fluids can verify the presence of asphaltene flocculation onset conditions and/or determine the presence and location of phase-separated bitumen in the reservoir of interest.
    Type: Application
    Filed: April 20, 2011
    Publication date: May 9, 2013
    Inventors: Youxiang Zuo, Oliver C. Mullins, Chengli Dong, Denise Freed, Andrew Pomerantz, Eric Lehne, Dingan Zhang
  • Publication number: 20120296617
    Abstract: An improved method that performs downhole fluid analysis of the fluid properties of a reservoir of interest and that characterizes the reservoir of interest based upon such downhole fluid analysis.
    Type: Application
    Filed: June 1, 2010
    Publication date: November 22, 2012
    Inventors: Julian Youxiang Zuo, Denise Freed, Chengli Dong, Andrew E. Pomerantz, Vinay K. Mishra, Oliver C. Mullins
  • Patent number: 8256283
    Abstract: A downhole characterization apparatus for formation fluids is provided. The apparatus comprises a downhole tool including a flowline for flowing the formation fluids capable of isolating a quantity of the formation fluids in a portion thereof; and a pump unit for depressurizing the isolated formation fluids; and a measurement controller which controls the downhole tool. The measurement controller includes a rough value estimation unit which estimates a rough value of the bubble point pressure of the formation fluids; and a speed controller which controls the depressurizing speed of the pump unit such that the isolated formation fluids are depressurized at a first speed to a certain pressure which is a predetermined value higher than said estimated rough value, and the isolated fluids are depressurized at a second speed which is slower than said first speed in order to measure a precise value of the bubble point pressure.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: September 4, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Toru Terabayashi, Tsutomu Yamate, Hideki Kinjo, Akihito Chikenji, Takeaki Nakayama, Oliver C Mullins, Soraya Sofia Betancourt, Michael O'Keefe, Chengli Dong
  • Patent number: 8230916
    Abstract: Apparatus and methods to analyze downhole fluids are described herein. A disclosed example method involves obtaining a sample of a downhole fluid. Additionally the example method involves ionizing at least a portion of the sample to decompose molecules having a relatively high molar mass into molecules having a relatively lower molar mass. Further, the example method involves analyzing the ionized portion of the sample to determine a parameter of the downhole fluid sample.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: July 31, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Ernest N. Sumrall, Anthony Goodwin, Erik Quam, Chengli Dong, Oliver C. Mullins
  • Publication number: 20120147704
    Abstract: Integrated formation modeling systems and methods are described. An example method of performing seismic analysis of a subterranean formation includes obtaining seismic data of the formation, obtaining fluid from the formation and analyzing at least some of the fluid to determine a fluid parameter. The example method additionally includes generating a model of the formation based at least on the seismic data and modifying the model based on the fluid parameter.
    Type: Application
    Filed: November 13, 2011
    Publication date: June 14, 2012
    Inventors: ChengGang Xian, Chengli Dong, Oliver C. Mullins, Ricardo R. Vasques
  • Patent number: 8039791
    Abstract: An example method for determining a partial density of a compound in a downhole fluid may comprise exposing the downhole fluid to an electromagnetic radiation, and measuring a spectrum of radiation absorption by the downhole fluid. An absorption peak of the compound may be identified in the measured spectrum. A first parameter indicative of radiation absorption by the downhole fluid may be determined in the identified absorption peak. Second and third parameters indicative of radiation absorptions by the downhole fluid may be determined essentially out of the identified absorption peak. A weighted combination of the second and third parameters may be computed, and the partial density of the compound may be determined from a difference between the weighted combination and the first parameter.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: October 18, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Chengli Dong, Oliver C. Mullins, Micheal O'Keefe
  • Patent number: 8024125
    Abstract: Apparatus and methods to monitor contamination levels in a formation fluid are disclosed. An example method involves obtaining first property data indicative of a first fluid property of a formation fluid and second property data indicative of a second fluid property of the formation fluid. A correlation between the first and second property data is generated and third data is fitted to the correlation. A fitting parameter is determined based on the third data indicative of an amount of change of the first property data relative to an amount of change of the second property data.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: September 20, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Kai Hsu, Peter S. Hegeman, Chengli Dong, Ricardo Vasques
  • Patent number: 7996154
    Abstract: A method and system for characterizing asphaltene gradients of a reservoir of interest and analyzing properties of the reservoir of interest based upon such asphaltene gradients. The analysis employs a correlation that relates insoluble asphaltene concentration to spectrophotometry measurement data measured at depth.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: August 9, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Youxiang (Julian) Zuo, Oliver C. Mullins, Jinglin Gao, Abdel M. Kharrat, Kentaro Indo, Michael O'Keefe, Soraya S. Betancourt, Chengli Dong, Francois Dubost
  • Patent number: 7966273
    Abstract: Apparatus and methods to perform downhole fluid analysis using an artificial neural network are disclosed. A disclosed example method involves obtaining a first formation fluid property value of a formation fluid sample from a downhole fluid analysis process. The first formation fluid property value is provided to an artificial neural network, and a second formation fluid property value of the formation fluid sample is generated by means of the artificial neural network.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: June 21, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Peter Hegeman, Chengli Dong, Charles Woodburn, Graham Birkett, Nikos Varotsis, Vassilis Gaganis
  • Publication number: 20110061439
    Abstract: Methods of calibrating a fluid analyzer for use in a wellbore are described. An example method of generating calibration data for a fluid analyzer for use in a downhole tool involves lowering a downhole tool including a fluid analyzer to a location in a wellbore, measuring, via the fluid analyzer, a characteristic value of a calibration fluid or a vacuum while the fluid analyzer is at the location, obtaining an expected characteristic value for the calibration fluid or the vacuum at the location, and comparing the measured characteristic value to the expected characteristic value to generate a calibration value for the fluid.
    Type: Application
    Filed: July 3, 2008
    Publication date: March 17, 2011
    Inventors: Chengli Dong, Ricardo R. Vasques, Michael O'Keefe, Peter S. Hegeman, Oliver C. Mullins, Go Fujisawa, Stephane Vannuffelen, Richard Jackson, Ahmad Saputra
  • Publication number: 20100313647
    Abstract: A downhole characterization apparatus for formation fluids is provided. The apparatus comprises a downhole tool including a flowline for flowing the formation fluids capable of isolating a quantity of the formation fluids in a portion thereof; and a pump unit for depressurizing the isolated formation fluids; and a measurement controller which controls the downhole tool. The measurement controller includes a rough value estimation unit which estimates a rough value of the bubble point pressure of the formation fluids; and a speed controller which controls the depressurizing speed of the pump unit such that the isolated formation fluids are depressurized at a first speed to a certain pressure which is a predetermined value higher than said estimated rough value, and the isolated fluids are depressurized at a second speed which is slower than said first speed in order to measure a precise value of the bubble point pressure.
    Type: Application
    Filed: August 2, 2010
    Publication date: December 16, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Toru Terabayashi, Tsutomu Yamate, Hideki Kinjo, Akihito Chikenji, Takeaki Nakayama, Oliver C. Mullins, Soraya S. Betancourt, Michael O'Keefe, Chengli Dong
  • Publication number: 20100282959
    Abstract: An example method for determining a partial density of a compound in a downhole fluid may comprise exposing the downhole fluid to an electromagnetic radiation, and measuring a spectrum of radiation absorption by the downhole fluid. An absorption peak of the compound may be identified in the measured spectrum. A first parameter indicative of radiation absorption by the downhole fluid may be determined in the identified absorption peak. Second and third parameters indicative of radiation absorptions by the downhole fluid may be determined essentially out of the identified absorption peak. A weighted combination of the second and third parameters may be computed, and the partial density of the compound may be determined from a difference between the weighted combination and the first parameter.
    Type: Application
    Filed: May 7, 2009
    Publication date: November 11, 2010
    Inventors: Chengli Dong, Oliver C. Mullins, Michael O'Keefe
  • Patent number: 7788972
    Abstract: A method of downhole characterization of formation fluids is provided. The method includes: estimating a rough value of the bubble point pressure of the formation fluids; depressurizing the formation fluids at a first speed to a certain pressure which is a predetermined value higher than the estimated rough value while the formation fluids are isolated in a portion of the flowline; and depressurizing the isolated fluids at a second speed which is slower than the first speed in order to measure a precise value of the bubble point pressure.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: September 7, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Toru Terabayashi, Tsutomu Yamate, Hideki Kinjo, Akihito Chikenji, Takeaki Nakayama, Oliver C. Mullins, Soraya S. Betancourt, Michael O'Keefe, Chengli Dong