中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

66 records (took 0.022 seconds)

    Fluid Analysis Methods and Apparatus for Determining Gas-Oil Ratio
    51.
    发明申请
    Fluid Analysis Methods and Apparatus for Determining Gas-Oil Ratio 审中-公开
    用于确定气油比的流体分析方法和装置

    公开(公告)号：US20150226063A1

    公开(公告)日：2015-08-13

    申请号：US14620659

    申请日：2015-02-12

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Vinay K. Mishra ,  Oliver C. Mullins

    IPC: E21B49/08 ,  G01N33/28

    CPC classification number: G01N33/2841 ,  E21B49/08 ,  E21B2049/085

    Abstract: The present disclosure relates to methods and apparatus for determining a gas-oil ratio based on downhole fluid analysis measurements and calibrated gas-oil ratio parameters. According to certain embodiments, the parameters for calculating the gas-oil ratio may be calibrated using historical data from the reservoir. For example, previously determined gas-oil ratios may be employed to calibrate the parameters to the reservoir. The calibrated parameters may then be employed during sampling operations to determine the gas-oil ratio.

    Abstract translation: 本公开涉及基于井下流体分析测量和校准的瓦斯 - 油比参数来确定瓦斯 - 油比的方法和装置。 根据某些实施例，可以使用来自储层的历史数据来校准用于计算瓦斯 - 油比的参数。 例如，可以使用先前确定的瓦斯 - 油比来校准到储层的参数。 然后可以在采样操作期间采用经校准的参数来确定瓦斯 - 油比。

    Asphaltene Gradient Modeling Methods
    52.
    发明申请
    Asphaltene Gradient Modeling Methods 审中-公开
    沥青质梯度建模方法

    公开(公告)号：US20150185360A1

    公开(公告)日：2015-07-02

    申请号：US14571660

    申请日：2014-12-16

    Applicant: Schlumberger Technology Corporation

    Inventor： Denise E. Freed ,  Oliver C. Mullins ,  Youxiang Zuo

    IPC: G01V11/00 ,  E21B43/00

    CPC classification number: G01V99/005 ,  E21B43/00 ,  E21B49/087 ,  G01N33/2823 ,  G01V11/00 ,  G06F17/5009

    Abstract: The present disclosure relates to methods and systems for developing an equation of state model for petroleum fluids. In one embodiment, formation fluid from a plurality of depths within a wellbore may be analyzed to determine a change in a gas oil ratio with respect to depth. The change in the gas oil ratio may be employed to determine a ratio of solubility and entropy terms to a gravity term. The resulting ratio can be used to develop the equation of state model.

    Abstract translation: 本公开涉及用于开发用于石油流体的状态模型方程式的方法和系统。 在一个实施例中，可以分析来自井眼内的多个深度的地层流体以确定相对于深度的瓦斯油比的变化。 可以使用瓦斯油比的变化来确定溶解度和熵项与重力项的比率。 所得比例可用于开发状态模型方程。

    Downhole Fluid Analysis Methods
    53.
    发明申请
    Downhole Fluid Analysis Methods 有权
    井下流体分析方法

    公开(公告)号：US20140238667A1

    公开(公告)日：2014-08-28

    申请号：US13829097

    申请日：2013-03-14

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Hadrien Dumont ,  Michael O'Keefe ,  Beatriz E. Barbosa ,  Oliver C. Mullins ,  Youxiang Zuo ,  Vinay Mishra

    IPC: E21B49/08

    CPC classification number: E21B49/082 ,  E21B2049/085

    Abstract: Fluid analysis measurements may be performed during withdrawal of a downhole tool to the surface. Fluid may be collected within a fluid analysis system of the downhole tool and the collected fluid may be exposed to the wellbore pressure during withdrawal of the downhole tool. Measurements for the collected fluid, such as optical density, the gas oil ratio, fluid density, fluid viscosity, fluorescence, temperature, and pressure, among other, may be recorded continuously or at intervals as the downhole tool is brought to the surface. The measurements may be employed to determine properties of the collected fluid, such as the saturation pressure and the asphaltene onset pressure.

    Abstract translation: 在将井下工具撤回到表面时，可以进行流体分析测量。 流体可以被收集在井下工具的流体分析系统内，并且收集的流体可能在井下工具撤出期间暴露于井眼压力。 当井下工具被带到表面时，连续地或间隔地记录所收集的流体的测量，例如光密度，瓦斯油比，流体密度，流体粘度，荧光，温度和压力。 可以使用测量来确定所收集的流体的性质，例如饱和压力和沥青质起始压力。

    Processes and systems for determining if downhole fluids are in equilibrium or non-equilibrium
    54.
    发明授权
    Processes and systems for determining if downhole fluids are in equilibrium or non-equilibrium 有权

    公开(公告)号：US12123863B2

    公开(公告)日：2024-10-22

    申请号：US18043616

    申请日：2021-09-02

    Applicant: Schlumberger Technology Corporation

    Inventor： Melanie Jensen ,  Lalitha Venkataramanan ,  Sandip Bose ,  Peter Tilke ,  Oliver C. Mullins ,  Li Chen ,  Denise E. Freed

    IPC: G01N33/28 ,  E21B49/08

    CPC classification number: G01N33/2823 ,  E21B49/081

    Abstract: Processes and systems for determining asphaltene equilibrium between two or more downhole geographic locations are provided. In some embodiments, the process can include measuring one or more fluid properties of a plurality of fluid samples at varying downhole depths to generate a one or more downhole fluid analysis measurement data points; selecting an asphaltene diameter distribution based on prior knowledge; utilizing the asphaltene diameter distribution to fit a first set of one or more equation of state curves to the one or more downhole fluid analysis measurement data points to define a first model of fitted equation of state curves and to determine one or more posterior distributions of asphaltene diameters; and determining if the varying downhole depths are in an asphaltene equilibrium by determining whether the one or more posterior distributions of asphaltene diameters is consistent with that of asphaltenes in equilibrium.

    Method for characterization of hydrocarbon reservoirs
    55.
    发明授权
    Method for characterization of hydrocarbon reservoirs 有权

    公开(公告)号：US11280191B2

    公开(公告)日：2022-03-22

    申请号：US14373019

    申请日：2013-01-17

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Oliver C. Mullins ,  Francois Xavier Dubost ,  Cosan Ayan ,  Wael Abdallah ,  Andrew E. Pomerantz ,  Dingan Zhang

    IPC: E21B49/08 ,  E21B49/00 ,  E21B49/02

    Abstract: A methodology that performs fluid sampling within a wellbore traversing a reservoir and fluid analysis on the fluid sample(s) to determine properties (including asphaltene concentration) of the fluid sample(s). At least one model is used to predict asphaltene concentration as a function of location in the reservoir. The predicted asphaltene concentrations are compared with corresponding concentrations measured by the fluid analysis to identify if the asphaltene of the fluid sample(s) corresponds to a particular asphaltene type (e.g., asphaltene clusters common in heavy oil). If so, a viscosity model is used to derive viscosity of the reservoir fluids as a function of location in the reservoir. The viscosity model allows for gradients in the viscosity of the reservoir fluids as a function of depth. The results of the viscosity model (and/or parts thereof) can be used in reservoir understanding workflows and in reservoir simulation.

    Asphaltene phase instability analysis in gas charges into oil reservoirs
    57.
    发明授权
    Asphaltene phase instability analysis in gas charges into oil reservoirs 有权

    公开(公告)号：US11188689B2

    公开(公告)日：2021-11-30

    申请号：US15196128

    申请日：2016-06-29

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Shu Pan ,  Yi Chen ,  Kang Wang ,  Oliver C. Mullins

    IPC: G06G7/48 ,  G06F30/20 ,  E21B49/08 ,  G06F111/10

    Abstract: A method includes placing a downhole acquisition tool in a wellbore in a geological formation containing a reservoir fluid. The method includes performing downhole fluid analysis using the downhole acquisition tool to determine at least one measurement of the reservoir fluid. The method includes using a processor to estimate at least one fluid component property by using an equation of state based at least in part on the at least one measurement of the reservoir fluid and to simulate a diffusion process using a diffusion model that takes into account the at least one estimated fluid property to generate a composition path. The method includes using a processor to estimate one or more phase envelopes based in part on the at least one fluid property and compare the one or more phase envelopes with the composition path. The method includes outputting a visualization identify potential areas of asphaltene instability.

    Method for reservoir evaluation employing non-equilibrium asphaltene component
    58.
    发明授权
    Method for reservoir evaluation employing non-equilibrium asphaltene component 有权

    公开(公告)号：US10100638B2

    公开(公告)日：2018-10-16

    申请号：US14945800

    申请日：2015-11-19

    Applicant: Schlumberger Technology Corporation

    Inventor： Kang Wang ,  Youxiang Zuo ,  Yi Chen ,  Oliver C. Mullins

    IPC: G01V1/40 ,  G06G7/48 ,  E21B49/08 ,  G01V99/00 ,  E21B49/10

    Abstract: The present disclosure relates to a method for characterizing a hydrocarbon reservoir of interest traversed by at least one wellbore that includes (a) using a numerical model to simulate over geological time a non-equilibrium concentration of an asphaltene component as a function of location within the wellbore, (b) analyzing fluid samples acquired from at least one wellbore that traverses the reservoir of interest to measure concentration of the asphaltene component as a function of location within the wellbore, (c) comparing the non-equilibrium concentration of the asphaltene component as a function of location within the wellbore resulting from the simulation of (a) to the concentration of the asphaltene component as a function of location within the wellbore as measured in (b), and characterizing the reservoir of interest based upon the comparing of (c).

Patent Agency Ranking