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公开(公告)号：US11770975B2
公开(公告)日：2023-09-26
申请号：US16866747
申请日：2020-05-05
发明人： Chung Chang , Jing Jin , Richard Timothy Coates
CPC分类号： H10N30/302 , B06B1/0215 , B06B1/0614 , E21B47/00 , G01N29/2437 , G01N29/30 , G01N2291/044 , G01V2001/526
摘要： Methods, systems and devices are disclosed for controlling self-induced acoustic interference. In one embodiment, a first piezoelectric transducer to which a first excitation signal is applied, generates back side acoustic waves that are transmitted from a back side of the first piezoelectric transducer into a backing material layer. A second piezoelectric transducer coupled to a back side of the backing material layer generates a first calibration response to the back side acoustic waves. An interference signal profile is generated based, at least in part, on the first calibration response and may be used to filter interference signal components and/or to generate a control signal to be applied to the second piezoelectric transducer during measurement cycles.
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公开(公告)号：US11762121B2
公开(公告)日：2023-09-19
申请号：US17183361
申请日：2021-02-24
发明人： Wei Shao , Songhua Chen
CPC分类号： G01V3/38 , G01N24/081 , G01R33/448 , G01V3/32
摘要： A method includes generating a temperature-corrected nuclear magnetic resonance (NMR) measurement-derived value corresponding to a target temperature using a correlation model that is based on a difference between the target temperature and a sample temperature. The method also includes determining a formation property based on the temperature-corrected NMR measurement-derived value corresponding to the target temperature.
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公开(公告)号：US11746936B2
公开(公告)日：2023-09-05
申请号：US16481129
申请日：2018-12-28
发明人： James Dan Vick, Jr.
IPC分类号： F16L15/00 , E21B17/042
CPC分类号： F16L15/007 , F16L15/009 , E21B17/042
摘要： A threaded joint (200) provides for metal-to-metal sealing on the ends of concentrically positioned inner and outer tubes when joining the concentric tubes to a single tube (107). A threaded coupling (105) secures the inner and outer tubes and joins both tubes to a single tube. The threaded connection leverages metal-to-metal sealing on the ends of each tube. The inner tube (102) may differ in length from the outer tube (101) and contains a single thread (211) at its for receiving the threaded coupling. Threading the coupling onto the inner tube establishes four flexing metal-to-metal seals (209A-D) between the threaded joint components. The inner and outer tubes maintain contact at the internal shoulder (104) as a result of preloading. If the tubes are of varying thicknesses, a nut (407) is placed between the internal shoulder and the threaded coupling to preserve contact between the tubes at the internal shoulder.
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公开(公告)号：US11746599B2
公开(公告)日：2023-09-05
申请号：US17184223
申请日：2021-02-24
发明人： William M. Moeny , Kirk Slenes
IPC分类号： E21B7/15 , E21B10/00 , E21B7/00 , H01G4/224 , H01G4/30 , H01G4/40 , H01G4/232 , H01G4/12 , H01G4/14
CPC分类号： E21B7/15 , E21B7/00 , E21B10/00 , H01G4/1227 , H01G4/1245 , H01G4/14 , H01G4/224 , H01G4/30 , H01G4/40 , H01G4/232
摘要： A downhole drilling system is disclosed. The downhole drilling system may include a drill bit including a first electrode and a second electrode. The downhole drilling system may also include a pulse-generating circuit coupled to the first electrode and the second electrode. A capacitor within the pulse-generating circuit may include a plurality of electrode sheets and a plurality of dielectric sheets interleaved with the plurality of electrode sheets. Each of the dielectric sheets may include a composite material including a polymer matrix formed from a polymer component and a nanoparticle component that increases the dielectric constant of the composite material above that of the polymer component.
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公开(公告)号：US11733419B2
公开(公告)日：2023-08-22
申请号：US16499452
申请日：2018-12-27
CPC分类号： G01V1/50 , G01V1/303 , G01V1/364 , G06F17/18 , G01V2210/324 , G01V2210/6222
摘要： Ringdown noise can be estimated and removed from a waveform captured by a downhole tool. Ringdown may be estimated by calculating a median of waveforms from a number of tool firings. The estimated ringdown may then be subtracted from a waveform currently being processed. The resulting waveform contains a more accurate representation of a true echo signal reflected from the borehole wall or formation. In some embodiments, the acoustic transducer's deterministic waveform may be learned by statistical analysis of other waveforms near in time to the presently measured waveform. In other embodiments, the deterministic waveform may be learned via previously acquired waveforms now stored in memory, or through predictive waveforms developed in laboratory testing conditions similar to those experienced downhole.
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公开(公告)号：US11732577B2
公开(公告)日：2023-08-22
申请号：US17303311
申请日：2021-05-26
CPC分类号： E21B47/12 , E21B17/028 , G01V11/002 , H04B3/36
摘要： A control module for operation of downhole well tools and apparatuses is disclosed. The control module can control multiple tools, electronics, subs, etc. based on one electronic input and optionally one hydraulic input from the wellhead or surface. The control module can transmit along selected electronic lines and optionally hydraulic lines in order to control specific apparatuses of the downhole well tools. By allowing a single electronic line from the surface or shut in to control multiple tools, total electronic complexity is reduced. A three conductor control module can control operations of up to twelve downhole tools, and a two conductor control module can control operations of up to six downhole tools, in some embodiments.
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公开(公告)号：US11714932B2
公开(公告)日：2023-08-01
申请号：US17006562
申请日：2020-08-28
发明人： Shilin Chen , Shiwei Qin
CPC分类号： G06F30/17 , E21B10/62 , E21B10/54 , E21B2200/20
摘要： A drill bit design generator uses drill bit metrics to generate drill bit designs with reduced 3D coupled vibration. The drill bit design generator generates an initial set of drill bit designs that are simulated in a deployed or artificial environment. Simulated drill bits according to the initial drill bit designs have gyroscopic sensors that detect the presence of 3D coupled vibration. A drill bit simulator tracks metrics such as side cutting efficiency and drilling efficiency during simulations and correlates these metrics with 3D coupled vibration. The drill bit design generator determines thresholds for these metrics using correlations with 3D coupled vibration and generates updated/new drill bit designs using the metric thresholds.
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公开(公告)号：US11681069B1
公开(公告)日：2023-06-20
申请号：US17646748
申请日：2022-01-03
IPC分类号： G01V5/10
CPC分类号： G01V5/102
摘要： In some embodiments, a method includes emitting, from a transmitter positioned in a wellbore formed in a subsurface formation, a pulse of neutrons into the subsurface formation and detecting gamma ray emissions at a near field and a far field generated in response to the pulse of neutrons being emitted into the subsurface formation. The method includes determining a single elemental decay for one chemical element of a number of chemical elements present in the subsurface formation based on the gamma ray emissions and determining at least one geophysical property of the subsurface formation based on the single elemental decay of the one chemical element.
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公开(公告)号：US11680447B2
公开(公告)日：2023-06-20
申请号：US17454432
申请日：2021-11-10
发明人： Nagaraja K. Pai , Ana Beatriz Martins Aguiar , Camila Elias Almeida , Boguslaw Wiecek , Diego Pereira Dias
CPC分类号： E21B7/15 , E21B41/0085 , E21B4/04 , H02J7/345 , H02J2207/50 , H02M3/33573
摘要： A power condition system is disclosed for conditioning power for charging of at least one capacitive element of a pulse power electrode, where the electrical power is received from at least one of a downhole alternator or generator. The received electrical power is rectified and controlled for both voltage and current amplitude. The electrical power is then split into two parallel square wave signals. The electrical power is then transformed, using parallel high frequency high voltage transformers, to a high voltage signal. The high voltage signals are rejoined and rectified to produce a high voltage DC signal. The DC signal is smoothed at a high capacity inductor and output via a switching element to at least one capacitive element of the pulse power electrodes.
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公开(公告)号：US11676000B2
公开(公告)日：2023-06-13
申请号：US16611817
申请日：2018-08-31
发明人： Ajay Pratap Singh , Roxana Nielsen , Satyam Priyadarshy , Ashwani Dev , Geetha Gopakumar Nair , Suresh Venugopal
IPC分类号： G06N3/042 , E21B10/62 , E21B12/02 , G06N3/08 , E21B10/46 , G06N3/02 , G06N20/00 , G06F30/27 , E21B4/06
CPC分类号： G06N3/042 , E21B10/46 , E21B10/62 , E21B12/02 , G06F30/27 , G06N3/02 , G06N3/08 , G06N20/00 , E21B4/06 , E21B2200/20 , E21B2200/22
摘要： The subject disclosure provides for a mechanism implemented with neural networks through machine learning to predict wear and relative performance metrics for performing repairs on drill bits in a next repair cycle, which can improve decision making by drill bit repair model engines, drill bit design, and help reduce the cost of drill bit repairs. The machine learning mechanism includes obtaining drill bit data from different data sources and integrating the drill bit data from each of the data sources into an integrated dataset. The integrated dataset is pre-processed to filter out outliers. The filtered dataset is applied to a neural network to build a machine learning based model and extract features that indicate significant parameters affecting wear. A repair type prediction is determined with the applied machine learning based model and is provided as a signal for facilitating a drill bit operation on a cutter of the drill bit.
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