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公开(公告)号：US11966828B2
公开(公告)日：2024-04-23
申请号：US16787245
申请日：2020-02-11
CPC分类号： G06N20/20 , G01V1/306 , G01V1/50 , G01V2210/6169 , G01V2210/6246
摘要： Permeability values are estimated based on well logs using regression algorithms, such as gradient boosting and random forest. The training data is selected from well logs for which core-analysis-based permeability values are available. The estimated permeability values are used to plan hydrocarbon production. The well logs used to build the depth blended model may include total porosity, gamma ray, volume of calcite, density, resistivity, and neutron logs. Selecting the training data may include grouping the well logs according to regions expected to have similar characteristics, choosing a subset of the well logs corresponding to wells expected to provide stable models according to pre-determined criteria, and/or identifying training zones on the chosen well logs according to one or more rules. Validation and consistency checks may also be performed.
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12.发明授权公开(公告)号：US11965411B2
公开(公告)日：2024-04-23
申请号：US17080763
申请日：2020-10-26
发明人： Geoff Steel , Mark Walsh , Stephen John Mayo
IPC分类号： E21B47/005 , E21B47/085 , E21B47/095 , G01V1/28 , G01V1/30 , G01V1/40 , G01V1/48 , G01V1/50
CPC分类号： E21B47/005 , E21B47/085 , E21B47/095 , G01V1/284 , G01V1/306 , G01V1/40 , E21B2200/22
摘要： Implementations described and claimed herein provide systems and methods for isolation detection. In one implementation, an axial acoustic signal is obtained. The axial acoustic signal is captured using an axial sensor deployed in a structure in a subterranean surface. The axial acoustic signal is separated into a first wave region and a second wave region by applying velocity filtering. An axial symmetry of a portion of the structure is determined based on at least one of the first wave region or the second wave region.
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公开(公告)号：US11959376B2
公开(公告)日：2024-04-16
申请号：US16689216
申请日：2019-11-20
IPC分类号： E21B47/005 , G01V1/50
CPC分类号： E21B47/005 , G01V1/50
摘要： A method and system for determining cement bonding, or other materials attached to a pipe string. A well measurement system for determining cement bonding or other materials attached to a pipe string may comprise an acoustic logging tool, wherein the acoustic logging tool comprises at least one receiver and at least one transmitter. The well measurement system may further comprise an information handling system, wherein the information handling system is configured to broadcast a signal with the transmitter, record the reflected signal with a receiver; and determine an integrity of a cement using a Quintero Wellbore Index.
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公开(公告)号：US20240111068A1
公开(公告)日：2024-04-04
申请号：US17932374
申请日：2022-09-15
发明人： Hikmet ANDIC , Stephane HOAREAU , Arsene VILLEMIN
CPC分类号： G01V1/50 , G01V1/18 , G01V1/46 , G01V1/523 , G01V2210/624
摘要： A system including a sensor housing including a channel, and cantilever beam connected to the sensor housing and disposed within the channel. The system also includes an actuator connected to the cantilever beam and configured to cause the cantilever beam to vibrate. A sensor is connected to the cantilever beam and is configured to generate a first signal representing a cantilever beam vibration of the cantilever beam. The system also includes an accelerometer connected to at least one of the sensor and the sensor housing, the accelerometer configured to generate a second signal representing an external vibration of the sensor housing. The external vibration changes the cantilever beam vibration. The system also includes a signal processor configured to receive, as input, the first signal and the second signal and to generate, as output, a filtered signal that reduces an effect of the external vibration on the cantilever beam vibration.
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公开(公告)号：US11946364B2
公开(公告)日：2024-04-02
申请号：US16922513
申请日：2020-07-07
发明人： Yao Ge , Ruijia Wang , Philip William Tracadas , Yi Yang Ang , Xiang Wu
IPC分类号： E21B47/107 , G01N29/38 , G01N29/40 , G01N29/42 , G01V1/50
CPC分类号： E21B47/107 , G01N29/38 , G01N29/40 , G01N29/42 , G01V1/50
摘要： A method for removing a guided wave noise in a time-domain may include recording one or more acoustic signals with one or more receivers at a first location, wherein the one or more acoustic signals are raw data. The method may further include determining a slowness range, estimating a downward guided wave noise by stacking the one or more acoustic signals based at least in part on a positive slowness, estimating an upward guided wave noise by stacking the one or more acoustic signals based at least in part on a negative slowness, and identifying a dominant direction of propagation. The method may further include identifying a slowness from a highest stacked amplitude for the dominant direction of propagation, estimating a downward guided wave noise with the slowness, estimating an upward guided wave noise with the slowness, and subtracting the downward guided wave noise and the upward guided wave noise.
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16.发明公开公开(公告)号：US20240103193A1
公开(公告)日：2024-03-28
申请号：US18483044
申请日：2023-10-09
发明人： Yao Ge , Ruijia Wang , Xiang Wu
CPC分类号： G01V1/50 , G01V1/48 , E21B47/005
摘要： A method and system for generating an acoustic log. The method may comprise disposing an acoustic logging tool in a wellbore, broadcasting a shaped signal with the acoustic logging tool such that the shaped signal interacts with a boundary of a casing and a material, recording a result signal from the boundary with the acoustic logging tool, and decomposing the result signal into a resonance mode. The method may further comprise applying a bandpass filter to the resonance mode to form a filtered signal, selecting a baseline signal from the filtered signal, removing the baseline signal from the filtered signal, and generating a log from the filtered signal. The system may comprise an acoustic logging tool. The acoustic logging tool may comprise at least one transmitter and at least one receiver. The system may further comprise a conveyance and an information handling system communicatively connected to the acoustic logging tool.
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公开(公告)号：US11940584B2
公开(公告)日：2024-03-26
申请号：US17012646
申请日：2020-09-04
申请人： Silviu Livescu , Oladele Bello
发明人： Silviu Livescu , Oladele Bello
摘要： Examples described herein provide a computer-implemented method that includes analyzing a first dataset by applying the first dataset to a first model to generate a first result. The method further includes analyzing a second dataset by applying the second dataset to a second model to generate a second result. The method further includes performing validation on the first model and the second model by comparing the first result to the second result. The method further includes, responsive to determining that the first result and the second result match, modifying an operational action of a surface assembly based on at least one of the first result or the second result. The method further includes, responsive to determining that the first result and the second result do not match, updating at least one of the first model or the second model.
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18.发明授权公开(公告)号：US11927711B2
公开(公告)日：2024-03-12
申请号：US17601990
申请日：2019-05-21
发明人： Ruijia Wang , Baichun Sun
CPC分类号： G01V1/50 , E21B49/00 , G01V1/46 , G01V1/52 , E21B2200/20 , G01V2210/1299 , G01V2210/1429 , G01V2210/324 , G01V2210/47 , G01V2210/614 , G01V2210/6222 , G01V2210/66
摘要： Apparatus, methods, and systems for determining body wave slowness values for a target formation zone. A method includes selecting a target axial resolution based on the size of a receiver array, obtaining a plurality of waveform data sets corresponding to a target formation zone and each acquired at a different shot position, reconstructing the plurality of waveform data sets to generate a plurality of subarray data sets corresponding to the target formation zone, determining a slowness value for each subarray data set and determining a slowness versus offset value for each subarray data set. The method may also include generating a borehole model having at least one alteration formation zone and a virgin formation zone and generating a slowness versus offset model based at least in part on the borehole model. The method may also include determining a radial depth of the alteration formation zone.
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公开(公告)号：US11921248B2
公开(公告)日：2024-03-05
申请号：US16308641
申请日：2017-06-20
CPC分类号： G01V1/50 , E21B43/25 , E21B47/06 , E21B47/18 , E21B49/006 , G01V1/42 , G01V1/48 , G01V2210/163 , G01V2210/6222 , G01V2210/6248
摘要： A pressure wave is generated within a first well extending into a subterranean formation. A pressure response associated with the pressure wave is detected from a second well extending into the formation. Information is then determined, based on the pressure response in the second well, wherein the information is associated with at least one of the formation and a fracture connected to at least one of the first well and the second well.
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公开(公告)号：US11920467B2
公开(公告)日：2024-03-05
申请号：US17575214
申请日：2022-01-13
发明人： Yunlai Yang , Wei Li
CPC分类号： E21B49/003 , G01R23/17 , G01V1/46 , G01V1/50 , G01V2200/16 , G01V2210/1216
摘要： Systems and methods include a computer-implemented method for determining normalized apparent power. Drilling acoustic signals corresponding to a time domain and generated during drilling of a well. A fast Fourier transformation (FFT) is performed using the drilling acoustic signals to generate FFT data. Normalized FFT data is generated using normalization parameters and a drill string rotation rate record of a drill string used to drill the well. The drill string rotation rate is received during drilling. Normalized apparent power is determined from data points of a predetermined top percentage of the normalized FFT data within a lithological significant frequency range. The normalized apparent power is a measure of the power of the drilling acoustic signals and it is a function of the amplitude and frequency of the normalized FFT data. The lithological significant frequency range is a frequency range within which the drill sounds are more closely related with lithology.
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