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1.发明授权公开(公告)号：US11965845B2
公开(公告)日：2024-04-23
申请号：US17860570
申请日：2022-07-08
Applicant: Institute of Geology and Geophysics, Chinese Academy of Sciences , Northeast Petroleum University
Inventor： Likuan Zhang , Xiaorong Luo , Jianzhao Yan , Yuhong Lei , Ming Cheng , Naigui Liu
CPC classification number: G01N24/081 , G01N15/088 , G01N24/082 , G01R33/448 , G01V3/32 , G01V3/38
Abstract: The present invention provides a device and a method for measuring fluid saturation in nuclear magnetic resonance (NMR) on-line displacement, the method comprising: measuring a nuclear magnetic resonance (NMR) T2 spectrum under the dead volume filling of the on-line displacement system as displacing phase fluid and the core to be measured as saturated nuclear magnetic detection phase fluid to generate a calibrated T2 spectrum; measuring a nuclear magnetic resonance (NMR) T2 spectrum of a process in which the core to be measured is converted from a saturated displaced phase fluid into a displacing phase fluid to generate a displacement process T2 spectrum; generating the fluid saturation of the on-line displacement system in real time according to the generated calibrated T2 spectrum and the displacement process T2 spectrum. The present invention achieves the purpose of improving measurement precision of fluid saturation in the on-line displacement process.
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公开(公告)号：US20230152200A1
公开(公告)日：2023-05-18
申请号：US17582157
申请日：2022-01-24
Applicant: Northeast Petroleum University
Inventor： Zhejun PAN , Tong WU
CPC classification number: G01N15/0826 , G01N15/0806 , G01N33/24
Abstract: The present disclosure provides a high-pressure helium shale porosity testing device and method. The device comprises a reference cylinder, a pressure cylinder, a sample cylinder, a differential pressure sensor, a pressure gauge, an venting and vacuumizing system, a temperature control system and a tubing and valve system, wherein the reference cylinder is respectively connected with a helium source, the pressure cylinder and the sample cylinder through the tubing and valve system, the differential pressure sensor is configured to measure changes of pressure difference between the sample cylinder and the pressure cylinder, the pressure gauge is configured to measure pressure at the pressure cylinder, the sample cylinder is further connected with the venting and vacuumizing system through the tubing and valve system, and the temperature control system is used for controlling the temperature of the whole device.
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公开(公告)号：US20220059191A1
公开(公告)日：2022-02-24
申请号：US17017121
申请日：2020-09-10
Applicant: Northeast Petroleum University
Inventor： Shansi TIAN , Bo LIU , Fang ZENG , Xiaofei FU , Ya'ao CHI , Tong WU , Haiyang YAN
Abstract: A method and system for detecting an amount of shale oil based on an occurrence state, wherein an occurrence-state-based shale oil quantification model is established in accordance with a kerogen swelled amount, an amount of kerogen absorbed oil, an amount of free oil in an organic pore, an amount of adsorbed oil by an inorganic mineral and an amount of free oil in an inorganic pore, and detects an amount of shale oil is detected in accordance with the occurrence-state-based shale oil quantification model, such that the accuracy of the evaluation of shale oil mobility is improved.
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公开(公告)号：US20220058303A1
公开(公告)日：2022-02-24
申请号：US17024223
申请日：2020-09-17
Applicant: Northeast Petroleum University
Inventor： Bo Liu , Shansi Tian , Fang Zeng , Xiaofei Fu , Boyang Wang , Longhui Bai , Haiyang Yan
IPC: G06F30/17
Abstract: A method and system for quantitatively evaluating kerogen swelling oil in shale is provided. The method includes: establishing different types of kerogen molecular models, and loading each of the kerogen molecular models into a graphene slit-type pore composed of a lamellar structure; performing energy minimization (EM), relaxation and annealing to obtain a kerogen slit-type pore; loading a shale oil molecule into the kerogen slit-type pore to obtain an initial model of swelling and adsorption of shale oil in kerogen; assigning a value to a force field of the shale oil molecule and the kerogen molecule in the swelling and adsorption model to obtain a density of the kerogen and the shale oil; plotting a density curve of the kerogen and the shale oil; calculating kerogen swelling oil mass; determining per-unit kerogen swelling oil mass; and determining the kerogen swelling oil mass in different evolution stages.
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公开(公告)号：US20220057199A1
公开(公告)日：2022-02-24
申请号：US17061550
申请日：2020-10-01
Applicant: Northeast Petroleum University
Inventor： Shansi Tian , Bo Liu , Xiaofei Fu , Fang Zeng , Xu Dong , Yifei Gao , Zhenjie Luo
Abstract: The present invention relates to a method and system for quantitatively evaluating surface roughness of an organic pore of kerogen in shale. The method includes: making a shale sample; applying a circle of silver-painted conductive tape on the edge of the shale sample to obtain a processed sample; conducting image scanning on the processed sample to obtain a scanned image; determining a kerogen area according to the scanned image; determining an organic pore area according to the kerogen area; carrying out gridding treatment on the organic pore area to obtain multiple grid cells; adopting double integral calculation on each of the grid cells to obtain the areas of the multiple grid cells; summing each of the areas to obtain the surface area of the organic pore; and evaluating surface roughness of the organic pore according to the surface area of the pore.
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Patent Agency Ranking
公开(公告)号：US11361193B2
公开(公告)日：2022-06-14
申请号：US16897952
申请日：2020-06-10
Applicant: Northeast Petroleum University
Inventor： Shansi Tian , Bo Liu , Fang Zeng , Xiaofei Fu , Zhiwei Hu , Ya'ao Chi , Haiyang Yan
Abstract: A method for identifying mineral pore types in mud shale includes: determining an inorganic mineral pore image and a kerogen region image of a mud shale Scanning Electron Microscopy (SEM) gray-scale image; performing an expansion operation on the inorganic mineral pore image to obtain an expanded inorganic mineral pore image; comparing the inorganic mineral pore image with the expanded inorganic mineral pore image, and determining an extra region in the expanded inorganic mineral pore image as an expansion region; collecting statistics about the number of pixel points of a siliceous mineral, a calcareous mineral, and a clay mineral; calculating the proportion of each mineral according to the number of pixel points of the minerals; drawing a mineral pore triangular image chart according to the proportions of minerals; and determining the mineral type corresponding to the pores in the inorganic mineral pore image according to the mineral pore triangular image chart.
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公开(公告)号：US20210363835A1
公开(公告)日：2021-11-25
申请号：US17377862
申请日：2021-07-16
Applicant: Northeast Petroleum University
Inventor： Jinchao Xu , Wei Li , Siqi Li , Jingming Gai , Wenfeng Sun , Huan Zhao
Abstract: The invention relates to a composite shock absorber for a polycrystalline diamond compact bit, comprising a drilling tool body having a water inlet, an impact body having a water outlet and forming a shock absorption cavity, a disc spring group having an annular pressing sleeve, a cylindrical torsion bar spring which has an external thread and a spline, is connected to the drilling tool body through threads and extended into an impactor and connected thereto through the spline, and the annular pressing sleeve, wherein bit vibration impact force is transmitted therebetween through a torsion transmission joint, and a bearing group is arranged between the lower end surface of the annular pressing sleeve and an annular step of the impact body. The composite shock absorber can weaken damage of the slippage effect to polycrystalline diamond compact cutting teeth, absorb axial vibration from a drill stem and prolong the service life of the bit.
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公开(公告)号：US11078572B2
公开(公告)日：2021-08-03
申请号：US16247443
申请日：2019-01-14
Applicant: NORTHEAST PETROLEUM UNIVERSITY
Inventor： Huaiyuan Wang , Ziyi Hu , Yanji Zhu , Yixing Zhu , Chijia Wang
IPC: C25D11/34 , C23C18/16 , C23C18/50 , C23C18/18 , C25D5/48 , C25D5/08 , C25D17/00 , C25D5/14 , C25D7/04 , C25D5/50 , C25D5/34 , C25D5/44 , C25D15/00 , C25D3/18 , C25D5/20 , C25D5/36 , C23C18/36
Abstract: Method for preparing high-strength and durable super-hydrophobic film layer on inner wall of elongated metal tube includes roughening treatment of inner wall of a metal tube, electrodepositing preparation of nickel-phosphorus alloy layer and functional coating, heat treatment, subsequent anodizing and low surface energy modification. The method greatly reduces the influence of local mass transfer resistance, and a uniform nanocrystalline film layer is electroplated under the ultrasound induction. Since only electroplating solution is filled in the tube during the preparation process, the consumption of device and raw materials is greatly reduced. Also, since silica particles are added to the electroplating solution in preparing the nanocrystalline film layer, the surface morphology can be made more uniform and denser in terms of the microscopic morphology. Nano-scale channels structures are etched, so that the super-hydrophobic inner surface can have a better ability to store air, and its water flow impact resistance is greatly enhanced.
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公开(公告)号：US10968361B2
公开(公告)日：2021-04-06
申请号：US16248751
申请日：2019-01-15
Applicant: NORTHEAST PETROLEUM UNIVERSITY
Inventor： Huaiyuan Wang , Zhanjian Liu , Xiguang Zhang , Yanji Zhu , Chijia Wang , Chongjiang Lv
IPC: C09D127/16 , C09D163/00 , C09D7/65 , C09D7/61 , C09D7/63 , C09D5/00 , C09D177/00 , C09D181/06 , C08K3/28 , C08K3/08 , C08K3/30 , C08K5/098 , C08K3/24 , C08K5/092 , C08K3/04 , C08K3/16 , C08K5/00 , C08K5/07 , C08K5/20 , C08L83/04
Abstract: A long-acting super-hydrophobic coating resistant to water pressure impact and preparation method thereof. The long-acting super-hydrophobic coating includes a conductive substrate and the following raw materials in parts by weight: 1 part to 10 parts of titanium source or zinc source, 40 parts to 100 parts of deionized water, 20 parts to 50 parts of hydrochloric acid or 20 parts to 40 parts of sodium hydroxide, 1 part to 10 parts of electrolyte, 1 part to 10 parts of low surface energy modifier, 10 parts to 20 parts of high molecular polymer, 1 part to 5 parts of carbon nanotube and 70 parts to 100 parts of organic solvent. The long-acting super-hydrophobic coating has an organic-inorganic nano-interpenetrating network structure, which improves the stability of the multi-stage nano-micro structure, so that the super-hydrophobic coating surface has a good high-pressure water impact resistance and high-pressure static water resistance.
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公开(公告)号：US12094577B2
公开(公告)日：2024-09-17
申请号：US17017121
申请日：2020-09-10
Applicant: Northeast Petroleum University
Inventor： Shansi Tian , Bo Liu , Fang Zeng , Xiaofei Fu , Ya'ao Chi , Tong Wu , Haiyang Yan
Abstract: A method and system for detecting an amount of shale oil based on an occurrence state, wherein an occurrence-state-based shale oil quantification model is established in accordance with a kerogen swelled amount, an amount of kerogen absorbed oil, an amount of free oil in an organic pore, an amount of adsorbed oil by an inorganic mineral and an amount of free oil in an inorganic pore, and detects an amount of shale oil is detected in accordance with the occurrence-state-based shale oil quantification model, such that the accuracy of the evaluation of shale oil mobility is improved.
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