METHOD FOR REAL-TIME FRACTURES DETECTION USING DRILL BIT AS SOURCE

    公开(公告)号:US20250060499A1

    公开(公告)日:2025-02-20

    申请号:US18450174

    申请日:2023-08-15

    Abstract: Methods and systems for training a machine learning (ML) network to predict a likelihood of a presence of a geological fracture from an observed drill-bit seismic dataset are disclosed. The method may include obtaining, using a seismic processing system, a plurality of geophysical models, where each geophysical model includes a location of a drill bit. The method may further include simulating, for each geophysical model a corresponding simulated drill-bit seismic dataset for seismic waves emanating from the drill bit and recorded by at least one seismic receiver and forming a training dataset including a plurality of training pairs, with each training pair including a geophysical model from the plurality of geophysical models and the corresponding simulated drill-bit seismic dataset. The method may still further include training, using the training dataset, the ML network to predict the likelihood of the presence of the geological fracture from the observed drill-bit seismic dataset.

    ADAPTIVE MULTISCALE NEAR-WELLBORE STRESS AND STABILITY ANALYSIS METHOD

    公开(公告)号:US20250059887A1

    公开(公告)日:2025-02-20

    申请号:US18451705

    申请日:2023-08-17

    Abstract: A computer-implemented method for determining near-wellbore stress and state in a drilled well includes: importing input data of a form of data files; calculating stress and pressure parameters along a wellbore path from the input data imported; displaying one or more of the input data and the calculated stress and pressure parameters along a well path of the drilled well; receiving, by a graphical user interface (GUI), a user selection of a depth at which distribution of the near-wellbore stress and state around a wellbore is determined; in response to receiving the user selection, calculating near-wellbore parameters describing the near-wellbore stress and state around the wellbore; and displaying, by the GUI, the calculated near-wellbore parameters around the wellbore.

    APPARATUS FOR GAS IDENTIFICATION USING HIGH FREQUENCY MICROWAVE CAVITIES

    公开(公告)号:US20250035566A1

    公开(公告)日:2025-01-30

    申请号:US18358626

    申请日:2023-07-25

    Abstract: Described is an apparatus for gas identification using a re-entrant microwave cavity. The re-entrant microwave cavity includes a tubular body having an exterior wall, a top portion, and a bottom portion. An inner conductor is positioned within the tubular body. A measurement conduit is positioned within the central conductor and extends from the bottom portion to the top portion of the tubular body. A cavity entry in connection with a first end of the measurement conduit is formed proximate the bottom portion of the tubular body to receive one or more gases from below the tubular body. A cavity exit in connection with a second end of the measurement conduit is formed proximate the top portion of the tubular body to release the one or more gases from the tubular body. A high frequency connector is configured to connect the tubular body to a microwave source.

    EVALUATION OF CEMENT SHEATH DAMAGE IN UNDERGROUND STORAGE CAVITY DURING EARTHQUAKE

    公开(公告)号:US20250004163A1

    公开(公告)日:2025-01-02

    申请号:US18344632

    申请日:2023-06-29

    Inventor: Yanhui Han

    Abstract: A method for evaluating potential damage to a cement sheath in an underground gas storage facility during an earthquake. A ground surface earthquake (EQ) wave is obtained on which a deconvolution analysis is performed, producing a subsurface EQ wave. Static and dynamic mechanical properties of a casing-cement-rock well system are obtained, and a computational model of the underground gas storage facility is generated. A gas pressure value is applied to the model, and, after boundary conditions are applied, a static equilibrium state is simulated. The subsurface EQ wave and boundary conditions are applied to the model, and, based on the gas pressure value, a dynamic seismic event is simulated. Based on the effect of the seismic simulation on the integrity of the underground gas storage facility, at least one parameter related to the operation of the underground gas storage facility may be adjusted.

    SYSTEMS AND METHODS TO DETERMINE PERMEABILITY OF ROCK UNDER ANISOTROPIC STRESS

    公开(公告)号:US20240393223A1

    公开(公告)日:2024-11-28

    申请号:US18324857

    申请日:2023-05-26

    Abstract: Methods and systems are disclosed. The methods may include determining a first sequence of permeabilities by subjecting a rock sample to a first sequence of confining stress, axial stress, pore pressure (CSASPP) triplets and determining a first rock parameter using the first sequence of permeabilities, the first sequence of CSASPP triplets, and a first permeability model. The methods may further include determining a second sequence of permeabilities by subjecting the rock sample to a second sequence of CSASPP triplets and determining a second rock parameter using the second sequence of permeabilities, the second sequence of CSASPP triplets, and the first permeability model. The method may still further include determining an in situ permeability for an in situ rock based on an initial permeability, a second stress sensitivity parameter, a first stress sensitivity parameter, a confining stress value, axial stress values, a pore pressure value, and a second permeability model.

    FAST ADMITTANCE MEASUREMENT METHOD FOR PIEZOELECTRIC LEAF CELL SENSOR ARRAY IN MULTIPHASE GAS-OIL-WATER FLOW METERING

    公开(公告)号:US20240393218A1

    公开(公告)日:2024-11-28

    申请号:US18321320

    申请日:2023-05-22

    Abstract: An apparatus for fluid measurement is disclosed. The apparatus includes a leaf cell sensor having one or more piezoelectric radial components connected to a circumferential component, a first electrode positioned on a distal face of at least one radial component, a second electrode positioned on a proximal face of the at least one radial component, a voltage source having a negative terminal and a positive terminal, the negative terminal being connected to the first electrode and the positive terminal being connected to the second electrode, an electric current measurement device connected to the first and second electrode to measure current flowing between the first and second electrode, and a processor of a computing device that determines, from the measured current, one or more properties of the fluid, where the voltage source couples electrical energy into the one or more piezoelectric radial components at multiple frequencies concurrently.

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