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公开(公告)号：US11821310B2
公开(公告)日：2023-11-21
申请号：US16610786
申请日：2018-11-30
CPC分类号： E21B49/0875 , E21B49/086 , G01N21/31 , G01N21/8851 , G01N21/94 , G01N33/2823 , G01N2021/8887
摘要： A method and a system for determining fluid contamination. The method may comprise monitoring a fluid sample, wherein the fluid sample comprises a reservoir fluid contaminated with a well fluid, and obtaining input parameters, wherein the input parameters comprise fluid properties obtained from measurement of the fluid sample and mud filtrate composition. The method may further comprise representing a mud composition as a Gaussian distribution, selecting a plurality of input data during a pumpout, determining calculated fluid properties of the reservoir fluid using an equation of state filtrate analysis, and further obtaining updated vales of iterative parameters for use in a mole fraction distribution function. The system may comprise a downhole fluid sampling tool operable to obtain fluid samples of a reservoir fluid contaminated with a well fluid while the downhole fluid sampling tool is disposed in a wellbore, and a processor.
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62.发明公开公开(公告)号：US20230340876A1
公开(公告)日：2023-10-26
申请号：US17727580
申请日：2022-04-22
IPC分类号： E21B49/08
CPC分类号： E21B49/088 , E21B49/0875 , E21B2200/20
摘要： Methods and systems for determining an estimated reservoir property using a determined desorption stage are disclosed. The method includes determining a fluid property and composition of a first fluid sample obtained from a reservoir, determining a measured relative volume of gas components and isotope ratios of gas components of the sample, and determining an equation of state. The method also includes obtaining a second and third sample at two later times, determining a composition, a measured relative volume of gas components, and isotope ratios of gas components of the later samples, and calibrating the equation of state utilizing the fluid composition and measured relative volume of gas components. The method further includes predicting a relative volume of gas components from the equation of state, determining a desorption stage, determining a critical pressure, an extent of desorption and a quantity of produced desorbed gas and determining the estimated reservoir property.
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公开(公告)号：US11796529B2
公开(公告)日：2023-10-24
申请号：US16578570
申请日：2019-09-23
申请人： M-I L.L.C. , SCHLUMBERGER NORGE AS
发明人： Colin Stewart , Zakhar Chizhov , Jerry Thomas Connaughton , Neil McPherson , Truls Fossdal , Rahul Sheladia , Ragnar Melz
CPC分类号： G01N33/2823 , E21B49/088 , G01N11/14 , E21B49/0875 , G01F1/74 , G01N9/36
摘要： A system includes a fluid conduit, a fluid chamber in communication with the fluid conduit, a rheology sensor in communication with the fluid chamber, and an electric temperature controller in communication with the fluid chamber. The fluid chamber is cooled or heated in response to a first control signal from the electric temperature controller.
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64.发明公开公开(公告)号：US20230313680A1
公开(公告)日：2023-10-05
申请号：US18330267
申请日：2023-06-06
发明人： Christopher Jones , Ralph Engel Piazza , Anthony H. Van Zuilekom , Megan Renee Pearl , Luiz Alexandre Sacorague , Alexandre Jaime Mello Vieira
CPC分类号： E21B49/088 , G01V8/10 , E21B49/0875
摘要： A method and system may include receiving, via one or more sensors in a wellbore formed in a subsurface formation, measurements of a concentration of an interactive component and a concentration of a non-interactive component in a formation fluid from the subsurface formation, wherein the non-interactive component and the interactive component comprise a component in the formation fluid that is non-interactive and interactive, respectively, with respect to a drilling fluid. The method and system may further include determining a level of contamination from a drilling fluid filtrate that contaminates the formation fluid based on the non-interactive component concentration in the formation fluid and the interactive component concentration in the formation fluid.
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公开(公告)号：US11773718B2
公开(公告)日：2023-10-03
申请号：US15115639
申请日：2014-03-07
IPC分类号： G01N33/00 , G01N33/24 , G01N1/20 , G01N1/14 , E21B49/08 , E21B47/06 , G01N1/12 , G01N1/16 , E21B47/07
CPC分类号： E21B49/0875 , E21B47/06 , E21B47/07 , E21B49/081 , E21B49/084 , G01N1/12 , G01N1/14 , G01N1/16 , G01N1/2035 , G01N33/0044 , G01N33/24 , G01N2001/205 , G01N2001/2071
摘要： Disclosed herein are methods and system for formation fluid sampling. In at least some embodiments, the method includes pumping formation fluid from a public flow line of a downhole tool via a private flow line into a detachable sample chamber. The method also includes isolating the private flow line from the public flow line. The method also includes collecting measurements of the formation fluid in the private flow line. The method also includes associating the measurements with the detachable sample chamber.
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66.发明公开公开(公告)号：US20230272715A1
公开(公告)日：2023-08-31
申请号：US17683116
申请日：2022-02-28
CPC分类号： E21B49/0875 , E21B49/088 , E21B43/16 , E21B2200/20 , E21B2200/22
摘要： A method to improve production of condensate is disclosed. The method includes obtaining a condensate fluids sample from a gas condensate reservoir, generating, from a laboratory pressure, volume and temperature (PVT) experiment of the condensate fluids sample, a liquid dropout curve, performing simulation of the laboratory PVT experiment based on Equations of State (EoS) of the condensate to generate a simulated liquid dropout curve, where the EoS is adjusted to match the simulated liquid dropout curve and the liquid dropout curve generated by the laboratory PVT experiment, performing, based on the adjusted EoS, a reservoir simulation of the gas condensate reservoir under injection of flue gas, where the reservoir simulation models a condensate banking phenomenon to generate an optimal flue gas ratio that maximizes a measure of condensate production, and facilitating, based on the optimal flue gas ratio, the production of the condensate in the gas condensate reservoir.
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公开(公告)号：US11741275B2
公开(公告)日：2023-08-29
申请号：US17508331
申请日：2021-10-22
发明人： John Paul Bir Singh , Siva Rama Krishna Jandhyala , Michelle Kan , Ernst Rudolf Man Schnell , Travis Allen Patterson , Megan McDaniel , K V V N Krishna Babu Yerubandi
IPC分类号： G06F30/20 , E21B33/12 , E21B49/08 , E21B47/07 , G06F119/14
CPC分类号： G06F30/20 , E21B33/12 , E21B47/07 , E21B49/0875 , E21B2200/08 , G06F2119/14
摘要： A system and method including modeling wellbore conditions and plug properties to predetermine the dissolution time of a plug under wellbore conditions for use in a well operation. The system and method provide an estimate of how long a dissolvable plug will remain viable based on its composition and the conditions in the wellbore. Once a plug has been selected or once wellbore conditions have been determined, the plug and/or conditions can be tested in the lab to confirm suitability prior to use downhole.
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68.发明授权公开(公告)号：US11740381B2
公开(公告)日：2023-08-29
申请号：US17372161
申请日：2021-07-09
CPC分类号： G01V3/32 , E21B49/02 , E21B49/0875 , G01N24/081 , G01N33/241 , E21B2200/20
摘要： A method for determining maximum recoverable hydrocarbon (EMR) in a tight reservoir is disclosed. The method includes determining, based on downhole logs, a total measure of hydrocarbon amount within the tight reservoir, determining, by at least attributing fluid loss during core surfacing of the core sample to hydrocarbons, a non-recoverable measure of hydrocarbon amount within a core sample of the tight reservoir, and determining an EMR measure based on the total measure of hydrocarbon amount and the non-recoverable measure of hydrocarbon amount, wherein during the core surfacing pore pressure reduces from a reservoir condition to a surface condition.
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69.发明公开公开(公告)号：US20230258082A1
公开(公告)日：2023-08-17
申请号：US17863698
申请日：2022-07-13
发明人： Xiaohua TAN , Xiaobing HAN , Xiaoping LI , Mingqing KUI , Zihan ZHAO , Xixiang LIU , Tao LI , Youjie XU , Yumin LI , Yongqiang JIN
CPC分类号： E21B49/0875 , E21B47/06 , E21B2200/20
摘要： An intelligent identification method of aquifer distribution in complex edge-water oil and gas reservoirs is provided. The problem, that targeted water control countermeasures cannot be proposed due to unclear identification of edge-water distribution in complex edge-water reservoirs, is resolved. Based on geological data and production data of a single well, establish a numerical simulation model of a water influx unit for simulating inflow dynamic of complex edge-water influx; by a genetic algorithm, correct characteristic parameters of an aquifer unit, including volume and water influx of the aquifer unit; automatically fit dynamic production data calculated by the model with actual dynamic production data, to obtain optimal characteristic parameters of the aquifer unit; and assign the characteristic parameters to the aquifer unit for inversion to determine aquifer distribution. The method has simple steps and accuracy by comparing the result of aquifer distribution inversion and that of numerical simulator.
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70.发明公开公开(公告)号：US20230250721A1
公开(公告)日：2023-08-10
申请号：US17666946
申请日：2022-02-08
CPC分类号： E21B49/0875 , E21B47/06
摘要： The determination of subsurface three-phase saturation (that is, oil, water, and gas saturation) across perforations and open completions of production wells using production rates and pressure measurements. A process may use the surface production rates of oil, water, and gas and measured pressures to determine well fractional flows. The subsurface three-phase saturation may be determined using the cell fractional flows calculated from the well fractional flows. Computer-readable media and systems for determining subsurface three-phase saturation are also provided.
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