公开(公告)号：US12044609B2

公开(公告)日：2024-07-23

申请号：US17763733

申请日：2020-10-02

申请人： TOTAL S.E. ,  THE REGENTS OF THE UNIVERSITY OF MICHIGAN

发明人： Yogesh B. Gianchandani ,  Tao Li ,  Partha Dutta ,  Alexander Benken ,  John-Richard Ordonez-Varela

IPC分类号： G01N15/08 ,  G01L15/00 ,  G01L19/00 ,  G01N33/24

CPC分类号： G01N15/0826 ,  G01L15/00 ,  G01L19/0038 ,  G01N15/0806 ,  G01N33/24 ,  G01N2203/0232 ,  G01N2203/0617

摘要： Investigating the permeability and porosity of geological samples is a routine element of geological studies, and is of particular interest in the oil and gas industry. Core-flood experiments are commonly performed on rock samples to measure transport characteristics in the laboratory. This disclosure reports the design and implementation of a high resolution distributed pressure measurement system for core-flood experiments. A series of microfabricated pressure sensors can be embedded in bolts that are housed within the pressurized polymer sheath that encases a rock core. A feedthrough technology has been developed to provide lead transfer between the sensors and system electronics across a 230-bar pressure difference. The system has been successfully benchtop tested with fluids such as synthetic oil and/or gas. Pressure measurements were recorded over a dynamic range of 20 bar with a resolution as small as 0.3 mbar.

公开(公告)号：US11647959B2

公开(公告)日：2023-05-16

申请号：US16958165

申请日：2019-01-02

申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN

发明人： Duxin Sun ,  Yogesh B. Gianchandani ,  Tao Li ,  Jinhui Liao ,  Qisen Cheng ,  Johnathan Lewis ,  Ryan Meredith ,  Jeremy Felton

IPC分类号： A61B5/145 ,  A61B10/00 ,  A61B5/01 ,  A61B5/03 ,  A61B5/00 ,  A61B5/07

CPC分类号： A61B5/6861 ,  A61B5/01 ,  A61B5/036 ,  A61B5/073 ,  A61B5/14539 ,  A61B10/0045 ,  A61B5/4255 ,  A61B2010/0061 ,  A61B2560/0214 ,  A61B2562/06 ,  A61B2562/162

摘要： An ingestible electronic capsule for the collection of samples along a gastric intestinal tract and methods relating thereto are provided. The ingestible electronic capsule includes a housing and a cap that form an interior chamber. The cap includes a sampling port and one or more sample collection chambers are disposed within the interior chamber. A motor is also disposed within the interior chamber and is configured to rotate one of the cap and the one or more sample collection chambers so to align one or the one or more sample collection chambers and the sampling port of the cap so to allow for sample collection. A microcontroller is also disposed within the interior chamber and is in communication with at least the motor. The microcontroller is configured to control the selective alignment of the sampling port and one of the one or more sample collection chambers and induce gastric intestinal fluid sampling.

公开(公告)号：US10782446B2

公开(公告)日：2020-09-22

申请号：US15410724

申请日：2017-01-19

申请人： The Regents of the University of Michigan

发明人： Tao Li ,  Yogesh Gianchandani ,  Yu Sui ,  Ryan Meredith

IPC分类号： G01V11/00

摘要： An environmental logging system that includes a housing and an electronic logging circuit sealed within the housing. The logging circuit includes an energy source, transducer, charging circuit, trigger circuit, electronic control unit (ECU), and transmitter. The energy source is charged by the charging circuit using electricity from the transducer in response to external energy applied to the transducer. Commands may also be received by the circuit via the transducer. The ECU includes a processor, memory, and one or more sensors, and it operates under power from the energy source to store data from the sensor(s). The transmitter is coupled to the ECU and transmits the data via electromagnetic radiation outside the housing. The trigger circuit supplies operating power to the processor only when the voltage level of the energy source is above a minimum threshold. The housing may be a tubular shell filled with a polymeric material.

公开(公告)号：US09950922B2

公开(公告)日：2018-04-24

申请号：US15127237

申请日：2015-03-17

申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN

发明人： Yogesh Gianchandani ,  Tao Li ,  Yushu Ma

IPC分类号： B81B7/00 ,  B81B7/02 ,  B81C3/00 ,  H01L23/043 ,  H01L23/053

CPC分类号： B81B7/0048 ,  B81B7/0032 ,  B81B7/0045 ,  B81B7/02 ,  B81B2201/0264 ,  B81C3/00 ,  B81C3/002 ,  B81C3/004 ,  H01L23/043 ,  H01L23/053

摘要： A sub-millimeter packaged microsystem includes a microsystem located in a sealed cavity defined between first and second portions of a micropackage. One or both micropackage portions can be fabricated from a metal suitable for use in a harsh environment, such as an oil well environment. The microsystem includes electronic components and can be configured to communicate with external components through a wall of the micropackage by wireless communication or by conductive feedthroughs. Pluralities of microsystems, first micropackage portions, and/or second micropackage portions are simultaneously placed during a batch assembly process. The assembly process may include micro-crimping the first and second micropackaging portions together without the need for bonding materials and related process steps.