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1.发明授权公开(公告)号：US11840914B1
公开(公告)日：2023-12-12
申请号：US18228739
申请日：2023-08-01
Inventor： Tianqiao Mao , Xiao Li , Guanfang Li , Shouding Li , Yanzhi Hu , Bo Zheng
IPC: E21B43/263 , E21B43/116 , E21B23/08 , E21B47/09
CPC classification number: E21B43/263 , E21B43/116 , E21B23/08 , E21B47/09
Abstract: A multi-stage perforation and shock wave combined device and method for initial fracture enhancement are provided. The multi-stage perforation and shock wave combined device for initial fracture enhancement includes a perforating gun and a shock wave excitation nipple, where the perforating gun is configured to fire perforating bullets into a formation to form initial fractures; the shock wave excitation nipple is connected to the perforating gun, and includes an energetic rod capable of exploding after excitation and a feeding assembly; the feeding assembly includes a pushing head, a reciprocating spring, and a feeding spring; and the reciprocating spring is configured to push the pushing head, so as to push a spare energetic rod into a target position.
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公开(公告)号：US11499407B2
公开(公告)日：2022-11-15
申请号：US16943811
申请日：2020-07-30
Inventor： Shouding Li , Xiao Li , Sijing Wang , Yiming Sun
IPC: E21B43/295 , C09K8/80 , C09K8/594 , E21B41/00
Abstract: A method for exploiting a natural gas hydrate reservoir includes drilling a borehole entering the natural gas hydrate reservoir; perforating the borehole to form perforations; fracturing the natural gas hydrate reservoir via the perforations by using a gas containing calcium oxide powder having a particle size 0.001 to 10 mm to generate a fracture; and collecting natural gas released by the natural gas hydrate. The method is easy to operate, cost-effective, and suitable for commercial applications.
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3.发明申请公开(公告)号：US20180306736A1
公开(公告)日：2018-10-25
申请号：US16025088
申请日：2018-07-02
Inventor： Shouding Li , Zhongming Zhou , Xiao Li , Jianming He , Yanhui Liu
IPC: G01N23/046
CPC classification number: G01N23/046 , G01N23/04 , G01N2223/616
Abstract: A method for enhanced interventional imaging for cracks, improving the precision in observing cracks in rock hydraulic fracturing test, benefiting for scientifically understanding regular pattern of development of hydraulically fractured cracks in rocks. The technical solution comprises: hydraulically fracturing the rock with aqueous solutions containing nanoscale interventional contrast-enhanced agent which has a high atomic number; forming hydraulically fractured cracks, wherein the difference in mass attenuation coefficient μ/ρ of x-ray between the cracks and the rock is improved by the interventional contrast-enhanced agent in the cracks, moreover, the difference in mass energy absorption coefficient μen/ρ of x-ray between the cracks and the rock is improved, then the linear attenuation coefficient of the reception of detector is changed, improving the imaging resolution for hydraulically fractured cracks in the rock.
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4.发明授权公开(公告)号：US11041819B1
公开(公告)日：2021-06-22
申请号：US17189268
申请日：2021-03-02
Inventor： Xiao Li , Bo Zheng , Shouding Li , Jianming He , Zhaobin Zhang , Tianqiao Mao , Guanfang Li , Yanfang Wu
IPC: G01N23/00 , G01N23/046 , G05D23/19
Abstract: A visual test system for a secondary generation or decomposition of a hydrate includes a hydrate conveying device, a computerized tomography (CT) imaging device, a temperature control device, a pressure control device and a flow control device. The hydrate conveying device includes an annular pipeline structure composed of a plurality of straight pipeline sections and a plurality of curved pipeline sections. The straight pipeline section is able to rotate around an axis thereof under the drive of a pipeline driving device. The CT imaging device is used to perform a three-dimensional (3D) detection inside the pipeline, and includes a turntable, a ray source and a detector. The ray source is able to rotate under the drive of the turntable driving device. The temperature control device, the pressure control device and the flow control device are used to control a gas-liquid mixture's temperature, pressure and flow rate, respectively.
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公开(公告)号：US10234407B2
公开(公告)日：2019-03-19
申请号：US16025088
申请日：2018-07-02
Inventor： Shouding Li , Zhongming Zhou , Xiao Li , Jianming He , Yanhui Liu
Abstract: The present invention improves the precision in observing cracks in rocks during a hydraulic fracturing test, improving a scientific understanding of the regular pattern of development cracks in of hydraulically fractured rocks. The technical solution includes: hydraulically fracturing the rock with aqueous solutions containing an interventional contrast-enhanced agent, forming hydraulically fractured cracks, wherein the difference in a mass attenuation coefficient μ/ρ of x-rays between the cracks and the rock is improved by the interventional contrast-enhanced agent in the cracks, moreover, the difference in mass energy absorption coefficient μen/ρ of x-rays between the cracks and the rock is improved, then the linear attenuation coefficient of the reception of the detector is changed, improving the imaging resolution for hydraulically fractured cracks in the rock.
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Patent Agency Ranking
公开(公告)号：US10139355B1
公开(公告)日：2018-11-27
申请号：US16025065
申请日：2018-07-02
Inventor： Shouding Li , Linan Liu , Xiao Li , Zhongming Zhou , Zhenxing Zhang , Yanhui Liu
IPC: G01N3/46 , G01N23/046 , G01N1/28
Abstract: A method for imaging three-dimensional topography with high precision, which overcomes the disadvantage and deficiency of low precision in observing three-dimensional topography of hydraulically fractured cracks of rocks, improve the precision in observing three-dimensional topography of cracks in rock hydraulic fracturing test, and benefit for scientifically understanding regular pattern of development of hydraulically fractured cracks of rocks. The technical solution comprises: hydraulically fracturing the rock with aqueous solution containing fluorine nuclides; forming hydraulically fractured cracks; in the process of fracturing, loading a fracturing apparatus while rotating the same; emitting an x-ray beam from an x-ray source, which penetrates the rock and reaches a CT detector; optical signals transmitted by the fluorine nuclides inside the rock being received by a high resolution planar array SiPM detector for nuclides; performing image fusion of nuclides tomographic scanning data and CT data to implement high precision imaging for three-dimensional topography of cracks in rocks.
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公开(公告)号：US11815496B2
公开(公告)日：2023-11-14
申请号：US17480772
申请日：2021-09-21
Inventor： Shouding Li , Xiao Li , Zhongming Zhou , Bo Zheng
CPC classification number: G01N3/12 , G01N3/36 , G01N2203/0019 , G01N2203/0048 , G01N2203/0256
Abstract: A rock mechanics triaxial testing machine includes an outer pressure chamber and an inner pressure chamber located inside the outer pressure chamber, and a side wall of the inner pressure chamber is provided with a communication hole communicating with the outer pressure chamber; an upper pressure head and a lower pressure head which may be placed inside the inner pressure chamber; an axial pressure driving member, the axial pressure driving member may drive the upper pressure head and lower pressure head to approach each other to squeeze the rock sample; an axial deformation sensor, a radial deformation sensor, a lifting mechanism, the lifting mechanism may drive the inner pressure chamber to rise and fall. In the rock mechanics triaxial testing machine, the inner pressure chamber and the outer pressure chamber are nested indoors and outdoors, and the inner pressure chamber is used to quickly mount rock test samples.
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公开(公告)号：US11421493B2
公开(公告)日：2022-08-23
申请号：US17248910
申请日：2021-02-12
Inventor： Jianming He , Zhaobin Zhang , Jian Huo , Yanfang Wu , Shouding Li , Xiao Li
Abstract: A device and a method for transferring and storing a deep in-situ core in a sealed and pressure-maintaining manner includes a pressure vessel, a sealed storage vessel, a control system, a pressure regulation system and at least one spherical valve. The pressure vessel includes a first barrel and a first end sealing piston mounted at a first end of the first barrel and being slidable in the pressure vessel. The sealed storage vessel includes a second barrel and a second end sealing piston which is mounted at a first end of the second barrel. At least one spherical valve is connected between the first barrel and the second barrel. The pressure regulation system is configured for regulating an amount of water in the second barrel. The control system includes a first pressure sensor, a second pressure sensor, and a controller.
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公开(公告)号：US11048002B1
公开(公告)日：2021-06-29
申请号：US17195763
申请日：2021-03-09
Inventor： Tianqiao Mao , Xiao Li , Shouding Li , Zhaobin Zhang , Jianming He , Guanfang Li , Yanfang Wu , Pengfei He , Bo Zheng
Abstract: A visualization system for simulating excavation of a fluid-structure interaction tunnel includes a fluid-structure interaction tunnel model system, a tunnel model solution supply system, a detection system and an excavation system. The tunnel model solution supply system is configured to inject a nuclide solution to simulate a fluid pressure. The detection system is configured to detect a 3D deformation state of a tunnel surrounding rock and a 3D migration process of the nuclide solution. The excavation system is provided between the detection system and the tunnel model system to simulate tunnel excavation. During the tunnel excavation, a lifting device in the excavation system controls a drilling device to ascend to a set height for operation. During 3D detection, the lifting device controls the drilling device to descend to an initial height to avoid affecting the detection of a detection device.
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公开(公告)号：US12065923B2
公开(公告)日：2024-08-20
申请号：US17219386
申请日：2021-03-31
Inventor： Shouding Li , Xiao Li , Dong Chen , Siyuan Wu
CPC classification number: E21B44/005 , E21B49/003 , E21B2200/22
Abstract: A drilling method and a drilling apparatus are provided. In the method, the feature parameter of the stratum around the well, the feature parameter of the stratum in front of the drill bit, the preset drilling parameter, the preset trajectory parameter, the current pose of the drill bit and the current rate of penetration of the drill bit are obtained; the feature parameter of the reservoir in front of the drill bit is determined based on the feature parameter of the stratum around the well and the feature parameter of the stratum in front of the drill bit; the above parameters are inputted to the pre-trained drilling parameter modification model to obtain drilling trajectory parameter and drilling speed parameters; and the drilling direction and the rate of penetration are regulated based on the above parameters.
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