-
公开(公告)号：US20220381130A1
公开(公告)日：2022-12-01
申请号：US17735727
申请日：2022-05-03
发明人： Songhua Chen , Wei Shao
摘要： System and methods of petrophysical modeling are disclosed. Training data for modeling a reservoir formation surrounding a wellbore drilled within the reservoir formation is received via a network from one or more data sources. A machine learning model is trained using symbolic regression to determine a formation model representing the reservoir formation, based on the training data received from the data source(s). At least one property of the reservoir formation is estimated, based on the formation model. A downhole operation is performed along the wellbore within the reservoir formation, based on the at least one estimated property.
-
42.发明授权公开(公告)号：US11204400B2
公开(公告)日：2021-12-21
申请号：US16937586
申请日：2020-07-24
IPC分类号： G01R33/30 , G01N24/08 , E21B25/08 , E21B47/00 , E21B49/02 , G01V3/14 , E21B25/00 , E21B49/06 , G01R33/44 , E21B49/08 , E21B10/02
摘要： Pressure coring where the core apparatus drills the core sample and seals the core sample at its native downhole pressure (e.g., several thousand psi) may be expanded to include nuclear magnetic resonance (NMR) imaging components to produce a pressurized NMR core holder that allows for NMR imaging of the core samples having been maintained in a downhole fluid saturation state. NMR imaging performed may include 1H and also 19F imaging depending on the chamber fluid used in the pressurized NMR core holder.
-
公开(公告)号：US20210356619A1
公开(公告)日：2021-11-18
申请号：US16335988
申请日：2018-04-11
发明人： Songhua Chen , Lilong Li
摘要： The present disclosure is directed to a method of determining wettability characteristics of a sub-surface formation within a wellbore utilizing nuclear magnetic resonance (NMR) and bulk fluid measurements at various stages of fluid saturation at that wellbore location. In another aspect, the pumping pressure is incrementally changed within the wellbore, measuring injection fluid and hydrocarbon saturation data values between the incremental pump pressure changes. In another aspect, a measuring and sampling tool is disclosed to execute the method and produce wettability characteristics. In another aspect, a system is disclosed that can operate NMR devices, bulk fluid equipment, pump systems, and other devices to collect data and to determine wettability characteristics on the collected data.
-
公开(公告)号：US11002875B2
公开(公告)日：2021-05-11
申请号：US15580583
申请日：2016-06-30
发明人： Songhua Chen , Wei Shao
摘要： An apparatus comprising a data acquisition tool including NMR sensors, a data acquisition processor communicatively coupled with the NMR sensors, and a first memory storing instructions that cause the data acquisition processor to perform operations comprising acquiring data of earth formation fluid, varying at least one of a magnetic field gradient and an inter-echo time, and acquiring additional data. The apparatus further comprises a data processing unit comprising a second memory storing instructions that cause the data processor to perform operations comprising receiving data acquired by the data acquisition tool, constructing a mathematical model of the data, conducting a first inversion of the mathematical model to obtain a first set of NMR responses, performing a forward model of the first set of NMR responses obtained from the first inversion, conducting a second inversion to obtain a second set of NMR responses, and determining earth formation fluid properties.
-
公开(公告)号：US10983077B2
公开(公告)日：2021-04-20
申请号：US15540553
申请日：2015-01-29
发明人： Songhua Chen , Magdalena Traico Sandor , Cato Russell McDaniel , Jason Glen Bell , William W. Shumway
摘要： A method for monitoring the oleophilic fluid to aqueous fluid ratio of a drilling fluid includes selecting a sample of the drilling fluid that has been recirculated, measuring the NMR response of the sample of the drilling fluid and determining the oleophilic fluid to aqueous fluid ratio of the drilling fluid based at least in part on the NMR response.
-
公开(公告)号：US10895659B2
公开(公告)日：2021-01-19
申请号：US16388372
申请日：2019-04-18
摘要： Methods, devices, and systems for tracking lateral motion of a nuclear magnetic resonance (NMR) tool are disclosed. In some embodiments, a phase shift for one or more spin-echo signals received by the NMR tool is detected during a velocity measurement sequence that corresponds to at least one formation measurement sequence. A lateral velocity of the NMR tool is determined based, at least in part, on the detected phase shift.
-
公开(公告)号：US20200333501A1
公开(公告)日：2020-10-22
申请号：US16746452
申请日：2020-01-17
摘要： An NMR logging system is disclosed which continues logging without interruption despite switching activation sets to adapt to changes in formation properties. Based on detection of an approaching or encountered geological boundary, an appropriate activation set is transmitted to the downhole NMR tool while the NMR tool continues logging. This system optimizes NMR data collection for each formation and associated formation fluid properties while reducing the need to stop the tool string movement while switching the activation set, and reduces incomplete collection of NMR and non-NMR logging tool data.
-
公开(公告)号：US10795044B2
公开(公告)日：2020-10-06
申请号：US16063212
申请日：2018-02-22
摘要： A method and system for downhole, real-time determination of relative permeability with nuclear magnetic resonance and formation testing measurements is provided. The method includes introducing a nuclear magnetic (NMR) tool and a formation testing tool into a well bore penetrating a subterranean formation. The method also includes measuring a saturation of a fluid in the subterranean formation from the NMR tool, measuring a mobility of the fluid from the formation testing tool, and measuring a viscosity of the fluid. The method includes calculating a relative permeability of the subterranean formation based on the measured saturation, the measured viscosity and the measured mobility. The method also includes providing a reservoir production prediction metric based on the calculated relative permeability of the subterranean formation for facilitating a well completion operation in the wellbore.
-
公开(公告)号：US10739490B2
公开(公告)日：2020-08-11
申请号：US15745686
申请日：2016-08-08
发明人： Lilong Li , Songhua Chen , Arcady Reiderman
摘要： A subterranean characterization and fluid sampling device includes a tool body, a probing module, and a permanent magnet. The tool body includes a fluid testing module configured to retain a fluid sample and an internal radio frequency coil disposed within the tool body and drivable to generate RF magnetic field B2. The probing module is coupled to the tool body and configured to withdraw the fluid sample from a formation and deliver the fluid sample to the fluid testing module. The probing module comprises an external antenna drivable to generate RF magnetic field B1. The permanent magnet induces static magnetic field B0. The permanent magnet is coupled to the tool body and external to the probing module.
-
50.发明授权公开(公告)号：US10605950B2
公开(公告)日：2020-03-31
申请号：US15565735
申请日：2017-04-17
发明人： Wei Shao , Songhua Chen
摘要： A formation evaluation system reduces inversion matrixes used to determine formation properties, thereby increasing the memory management and processing efficiency of the evaluation system. NMR data is acquired from a wellbore and expressed mathematically by the system as a least squares solution to a linear system. The least squares solution is approximated using a numerical decomposition method and the evaluation system determines a formation property using the approximated least squares solution. Thereafter, a downhole operation may be planned, analyzed or conducted using the determined formation property.
-
-
-
-
-
-
-
-
-
搜索结果
106 条记录 (耗时 0.026 秒)
