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1.发明授权公开(公告)号：US12111441B2
公开(公告)日：2024-10-08
申请号：US17936803
申请日：2022-09-29
发明人： Wei Shao , Songhua Chen , Huiwen Sheng
摘要： System and methods of petrophysical modeling are disclosed. Measurements of formation parameters are received from one or more measurement tools during a first stage of a downhole operation within a reservoir formation. A correlation between each of the formation parameters and a target parameter of the formation is determined based on the measurements. One or more formation parameters are selected as input parameters for a symbolic regression model, based on the correlation. A symbolic regression model is trained to generate candidate formation models representing the target parameter, based on the selected input parameters. One or more optimizations are applied to the candidate models to determine a target petrophysical model of the formation. Values of the target parameter are estimated for at least one formation layer, based on the target petrophysical model. A second stage of the downhole operation is performed within the formation layer(s) based on the estimated values.
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公开(公告)号：US12060782B2
公开(公告)日：2024-08-13
申请号：US17990537
申请日：2022-11-18
CPC分类号： E21B43/2401 , E21B43/25
摘要： A system for electrical treatment in a reservoir with gas wells is disclosed. The system includes a first well in the reservoir configured to act as an electrode, the reservoir having a plurality of pore spaces saturated by water, and a second well in the reservoir configured to act as a second electrode hydraulically connected to the first well. A power unit is connected to the first and second wells by a cable configured to emit an electric current to the first well and the second well into the reservoir. The electric current enlarges the plurality of pore spaces in the reservoir, facilitating a production of gas from the water. A transformer is connected to the power unit by the cable, the transformer being configured to step down a voltage from a power supply to the power unit. The power supply is connected to the transformer by the cable.
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公开(公告)号：US20240167379A1
公开(公告)日：2024-05-23
申请号：US17991099
申请日：2022-11-21
CPC分类号： E21B43/25 , E21B49/003 , E21B49/087
摘要： The present disclosure describes methods and systems, including computer-implemented methods, computer program products, and computer systems, for managing corrosions in oil and gas pipelines. One computer-implemented method includes: obtaining, by one or more hardware processors, a first dataset and a second dataset; performing, by one or more hardware processors, a feature mapping operation that matches one or more corrosion features in the first dataset to corresponding features in the second dataset, wherein the feature mapping operation comprises a joint matching process, a girth weld coordinate transformation process, and an iterative closet point (ICP) process; determining, by one or more hardware processors, a corrosion growth rate based on an output of the feature mapping operation; and outputting, by one or more hardware processors, the output of the feature mapping operation in a user interface.
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公开(公告)号：US20240159131A1
公开(公告)日：2024-05-16
申请号：US17978538
申请日：2022-11-01
CPC分类号： E21B43/25 , C09K8/602 , C09K8/68 , C09K8/703 , C09K2208/30
摘要： The stability of foams containing a viscoelastic surfactant of an amine or amidoamine oxide and exhibiting thermal resistance at bottomhole temperatures greater than 300° F. may be enhanced by including in the foam a microemulsion containing a nonionic surfactant and a terpene.
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公开(公告)号：US20240151870A1
公开(公告)日：2024-05-09
申请号：US18407032
申请日：2024-01-08
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：US20240124763A1
公开(公告)日：2024-04-18
申请号：US18472513
申请日：2023-09-22
发明人： Andrew Bryce Conway
IPC分类号： C09K8/60 , C09K8/52 , C09K8/528 , C09K8/62 , E21B43/25 , E21B43/26 , E21B43/267 , E21B43/27 , E21B43/28
CPC分类号： C09K8/605 , C09K8/52 , C09K8/528 , C09K8/602 , C09K8/62 , E21B43/25 , E21B43/26 , E21B43/267 , E21B43/27 , E21B43/28 , C09K8/72
摘要： Formulations and methods for stimulating the production from wells in nano-darcy shale formations. In one embodiment, the method includes injecting a treatment mixture containing a metal complexing agent into a nano-darcy shale formation adjacent to a well at a pressure below the fracture pressure of the formation. A sufficient contact time is allowed and then the treatment mixture is pumped from the subsurface. This has been shown to stimulate well production in shale formations. Without being held to a particular theory it appears that the metal complexing agent is binding with naturally occurring metals in the shale formation, and particularly divalent metal ions, which are then extracted with the spent fluid. This removal of naturally occurring metals may be increasing the permeability of the formation in the contact region adjacent to the well, thereby causing the observed increased production.
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公开(公告)号：US11821309B2
公开(公告)日：2023-11-21
申请号：US17182635
申请日：2021-02-23
CPC分类号： E21B49/087 , E21B43/25 , G01N33/24 , G01V11/00 , E21B2200/20
摘要： Systems and methods include a method for determining perforation cluster points of a reservoir. A rock type of a geological formation of a reservoir is determined using petrophysical data. The transmissible sublayers of the reservoir are determined by grouping the petrophysical data into different subset transmissible layers based on cut-off criteria. Net transmissible reservoir footage for the transmissible sublayers are generated based on averages of parameters for minimum and maximum measured depths. Potential stages for the reservoir are determined using a conditional formatting on the transmissible reservoir footage. Potential perforation cluster points selected based on the potential stages for the reservoir are received from input of an engineer.
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公开(公告)号：US11808121B2
公开(公告)日：2023-11-07
申请号：US16540842
申请日：2019-08-14
申请人： Fervo Energy Company
发明人： Jack Norbeck , Timothy Latimer
CPC分类号： E21B43/126 , E21B43/16 , E21B43/25 , E21B43/26
摘要： A controlled rate of propagation of the fluid saturation front or thermal front is desired in may oil and gas and geothermal operations. Natural fractures and fractures created during hydraulic stimulation may have heterogeneous hydraulic properties resulting in uneven flow distributions, therefore leading to short-circuiting and breakthrough issues. The present invention relates to wellbores connected hydraulically by multiple fracture zones; methods are directed to control for even flow distribution among fractures, regardless of heterogeneities in fracture hydraulic properties, and to control propagation of saturation fronts and thermal fronts in subsurface reservoirs.
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公开(公告)号：US11802234B2
公开(公告)日：2023-10-31
申请号：US17526802
申请日：2021-11-15
发明人： Andrew Bryce Conway
IPC分类号： C09K8/52 , E21B43/25 , E21B43/16 , C09K8/60 , E21B43/267 , C09K8/62 , C09K8/528 , E21B43/26 , E21B43/27 , E21B43/28 , C09K8/72
CPC分类号： C09K8/605 , C09K8/52 , C09K8/528 , C09K8/602 , C09K8/62 , E21B43/25 , E21B43/26 , E21B43/267 , E21B43/27 , E21B43/28 , C09K8/72 , C09K2208/32
摘要： Formulations and methods for stimulating the production from wells in nano-darcy shale formations. In one embodiment, the method includes injecting a treatment mixture containing a metal complexing agent into a nano-darcy shale formation adjacent to a well at a pressure below the fracture pressure of the formation. A sufficient contact time is allowed and then the treatment mixture is pumped from the subsurface. This has been shown to stimulate well production in shale formations. Without being held to a particular theory it appears that the metal complexing agent is binding with naturally occurring metals in the shale formation, and particularly divalent metal ions, which are then extracted with the spent fluid. This removal of naturally occurring metals may be increasing the permeability of the formation in the contact region adjacent to the well, thereby causing the observed increased production.
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公开(公告)号：US11795369B2
公开(公告)日：2023-10-24
申请号：US17222312
申请日：2021-04-05
IPC分类号： C09K8/035 , C09K8/52 , E21B21/00 , C08F220/54 , C09K8/508 , C09K8/512 , E21B37/00 , E21B37/08 , E21B43/08 , E21B43/10 , E21B43/25 , C08F220/56 , C09K8/12 , G01V3/20 , G01V3/34 , C08F228/02
CPC分类号： C09K8/52 , C08F220/54 , C08F220/56 , C09K8/035 , C09K8/12 , C09K8/5083 , C09K8/512 , E21B21/003 , E21B37/00 , E21B37/08 , E21B43/082 , E21B43/10 , E21B43/25 , G01V3/20 , G01V3/34 , C08F228/02 , C09K2208/26 , C08F220/56 , C08F220/585
摘要： A wellbore fluid includes a base fluid; and a crosslinked and branched polymeric fluid loss control agent formed from at least an acrylamide monomer and a sulfonated anionic monomer; wherein the fluid loss control agent has an extent of crosslinking that is selected so that the fluid loss control agent has a viscosity that is within a peak viscosity response of the viscosity response curve.
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