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公开(公告)号：US10677947B1
公开(公告)日：2020-06-09
申请号：US16536402
申请日：2019-08-09
Applicant: China University of Petroleum (Beijing)
Inventor： Pinbo Ding , Bangrang Di , Jianxin Wei
Abstract: The present disclosure provides a horizontal fracture prediction method, device and equipment. The method comprises: acquiring primary wave velocities and shear wave velocities of first and second incidence angle directions of seismic waves at a target fracture location, wherein a first incidence angle is smaller than a second incidence angle, and the incidence angles are included angles between propagation directions of the seismic waves and a surface normal direction of a target fracture; calculating a first primary wave/shear wave velocity ratio and a first shear wave splitting (SWS) coefficient of the first incidence angle direction; calculating a second primary wave/shear wave velocity ratio of the second incidence angle direction; and determining that the target fracture is a horizontal fracture under the condition that the first SWS coefficient is smaller than a first preset value and a ratio of the first primary wave/shear wave velocity ratio to the second primary wave/shear wave velocity ratio is smaller than a second preset value. According to embodiments of the present disclosure, whether the target fracture is the horizontal fracture or not is determined through calculating the primary wave/shear wave velocity ratio and the first SWS coefficient of the first incidence angle direction and the primary wave/shear wave velocity ratio of the second incidence angle direction, so that effective data are provided for exploration and development of coal-bed gas and shale gas.
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公开(公告)号：US20200038848A1
公开(公告)日：2020-02-06
申请号：US16525503
申请日：2019-07-29
Applicant: CHINA UNIVERSITY OF PETROLEUM - BEIJING
Inventor： HAIYAN LIU , TAO ZHENG , ZHICHANG LIU , XIANGHAI MENG , RUI ZHANG , CHUNMING XU
Abstract: The present application provides a ZSM-35 molecular sieve and a preparation method thereof. The ZSM-35 molecular sieve is an aggregated ZSM-35 molecular sieve having a hierarchical macro-meso-microporous pore structure. Raw materials for the preparation method do not include an organic template agent and a crystal seed, and the preparation method includes the following steps: preparing a reactant gel where a molar ratio of SiO2, Al2O3, Na2O, K2O, oxygen-containing acid radical and H2O is (20-40):1.0:(1.5-2.0):(4.0-6.5):(1.0-4.0):(600-1200); sequentially performing an aging treatment and a crystallization treatment on the reactant gel, washing and drying a resulting synthetic product. The ZSM-35 molecular sieve provided by the present application may be obtained by synthesizing without using an organic template agent and crystal seed, and because it has a hierarchical pore structure, it is favorable for material diffusion and mass transfer.
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公开(公告)号：US10550688B2
公开(公告)日：2020-02-04
申请号：US15858283
申请日：2017-12-29
Applicant: China University of Petroleum—Beijing
Abstract: Apparatus and method for a physical simulation experiment of fracturing an unconventional oil and gas reservoir layer by layer by spiral perforation via a horizontal well bore. The apparatus includes an outer wellbore provided with at least three layers of spiral perforations, and an inner wellbore provided with at least three layers of through-holes. The method includes injecting fracturing fluid into the inner wellbore, and opening a first layer cracks of a stratum by the fracturing fluid passing the first through-hole layer and the first spiral perforation layer, opening a second layer cracks of the stratum by the fracturing fluid passing second through-hole layer and second spiral perforation layer and opening a third layer cracks of the stratum by the fracturing fluid passing third through-hole layer and third spiral perforation layer.
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公开(公告)号：US20200018671A1
公开(公告)日：2020-01-16
申请号：US16354604
申请日：2019-03-15
Applicant: China University of Petroleum - Beijing
Inventor： Guangqing Zhang , Xuelin Zheng , Yuanyuan Wang , Cankun Lin
Abstract: The present invention relates to a visualized supercritical carbon dioxide fracturing physical simulation test method, comprising: preparing a rock sample, preparing a prefabricated fracture; curing the rock sample; fixing the cured rock sample in a confining pressure chamber, and applying a preset three-way confining pressure and pore pressure to the rock sample; turning on a high-speed camera, injecting supercritical carbon dioxide fracturing fluid to the central hole, and continuously recording a fluid injection pressure and test surface image information of the rock sample until the test is ended; observing a hydraulic fracture inside. Through this method, it is possible to obtain images in the whole process of initiation and extension of the artificial fracture during supercritical carbon dioxide fracturing, and distribution rules of parameters, such as stress, strain and pore pressure on the surfaces of the rock sample.
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公开(公告)号：US20190321833A1
公开(公告)日：2019-10-24
申请号：US16055321
申请日：2018-08-06
Inventor： Chunxi Lu , Sihong Gao , Yiping Fan , Dandan Zhang , Min Dai , Lijun Zhou
Abstract: A separation device, comprising: a third-stage cyclone housing, a separating unit, and a granule recycle and regeneration unit, wherein, the separating unit is disposed inside the third-stage cyclone housing and comprises: a cyclone separator and a moving bed coupled to each other; the granule recycle and regeneration unit comprises: a riser, a spouted bed regenerator, and a regeneration pipe connecting the spouted bed regenerator with the moving bed; the spouted bed regenerator has upper and lower ends opposing to each other, wherein, the upper end of the spouted bed regenerator is provided with a sleeve which opens downwardly, the sleeve divides an interior of the spouted bed regenerator into a fountain area and an annular gap area, and a regenerating gas outlet which is in communication with the annular gap area is provided on a side wall of the spouted bed regenerator. A centrifugal separation and intercepting filtration of the moving granular bed to fine particles can separate fine particles under low pressure drop, and can continuously separate the captured dust particles and the moving bed granules ensuring a sustainable recycling of the moving bed granules.
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Patent Agency Ranking
36.发明申请公开(公告)号：US20190277996A1
公开(公告)日：2019-09-12
申请号：US16238409
申请日：2019-01-02
Applicant: CHINA UNIVERSITY OF PETROLEUM - BEIJING
Inventor： LIZHI XIAO , GUANGZHI LIAO , WEI LIU
Abstract: Provided is a radio frequency antenna receiving method and device for a downhole three-dimensional scanning nuclear magnetic resonance imager. The device comprises: an array antenna for receiving an echo signal, an antenna interface circuit, a receiving and amplifying circuit for amplifying the echo signal, an analog-to-digital conversion circuit, a signal collecting circuit and a control circuit, which are sequentially connected; the array antenna comprises N antenna units, where N≥4; four ports of the control circuit are respectively connected to the antenna interface circuit, the receiving and amplifying circuit, the analog-to-digital conversion circuit and the signal collecting circuit so as to control them, and the control circuit is connected to a logging ground acquisition system; the antenna interface circuit selects one antenna unit in the array antenna. The method and device of the present invention can perform signal detection in a circumferentially multi-directional sensitive region.
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37.发明申请公开(公告)号：US20190224652A1
公开(公告)日：2019-07-25
申请号：US16237857
申请日：2019-01-02
Applicant: China University of Petroleum-Beijing
Inventor： Haiyan Liu , Lina Zhang , Xiaojun Bao
IPC: B01J29/00 , B01J21/16 , B01J29/85 , B01J29/40 , B01J21/04 , B01J21/12 , B01J21/08 , B01J37/00 , B01J37/30 , B01J35/08 , B01J35/02 , B01J37/02 , B01J37/06 , B01J37/04 , B01J37/08 , B01J37/03 , C07C1/24
Abstract: The present invention relates to a composite catalytic material of SAPO-34/ZSM-5@kaolin microspheres and its preparation and use, the method comprises the steps of: 1) processing kaolin into kaolin microspheres, and baking them to obtain activated kaolin microspheres; 2) mixing the activated kaolin microspheres obtained in step 1), water, a phosphorus source, and a template agent to prepare a gel; 3) mixing the gel obtained in step 2) and a ZSM-5 molecular sieve, and carrying out aging, crystallization, and separation to obtain a composite material of SAPO-34/ZSM-5@kaolin; 4) subjecting the composite material obtained in step 3) to ammonium exchange treatment and baking, to obtain the composite catalytic material of SAPO-34/ZSM-5@kaolin microspheres. The present invention not only greatly shortens the preparation route for the catalyst and reduces the cost of catalyst preparation, but also allows adjustment of the fractions of SAPO-34 and ZSM-5 molecular sieves in the composite material by adjustment of the synthesis conditions.
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38.发明申请公开(公告)号：US20190219649A1
公开(公告)日：2019-07-18
申请号：US16238369
申请日：2019-01-02
Applicant: CHINA UNIVERSITY OF PETROLEUM - BEIJING
Inventor： LIZHI XIAO , GUANGZHI LIAO , WEI LIU , YAO WEI , YANGYANG XU
Abstract: Provided is an array antenna driving method and device for a three-dimensional scanning nuclear magnetic resonance imager, wherein each antenna to be operated is driven to transmit a nuclear magnetic pulse signal by receiving a control command sent by a control system; parsing the control command to generate a pulse transmission timing signal and an antenna switching control signal; processing an externally inputted high voltage signal according to the pulse transmission timing signal to output high voltage radio frequency pulses of a plurality of channels; and selecting a high voltage radio frequency pulse of at least one channel and the antenna to be operated in the nuclear magnetic resonance pulse array antenna according to the antenna switching control signal, and superposing the selected high voltage radio frequency pulse. The device of the present invention can improve multi-layer slice information detection of signals in circumferentially different azimuth zones.
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39.发明申请公开(公告)号：US20190153809A1
公开(公告)日：2019-05-23
申请号：US16242099
申请日：2019-01-08
Applicant: China University of Petroleum - Beijing
Inventor： Yiqun Zhang , Ya Liu , Gensheng Li , Zhongwei Huang , Huaizhong Shi , Xianzhi Song , Mao Sheng , Lu Ji
Abstract: An energy-gathered bundle type nesting plugging and wall reinforcing device and an application thereof in karst cave plugging. The energy-gathered bundle type nesting plugging and wall reinforcing device comprises an external slotted metal pipe (1) and an internal nesting blasting tool, wherein the slotted metal pipe (1) has spiral slits (2) or straight slits (3) cut on a pipe wall thereof; the nesting blasting tool is a mandrel (5) having a surface provided with a plurality of explosive grooves (4) in which explosives are placed; the slotted metal pipe (1) is disposed to sleeve the mandrel (5) and fixed, with a movable fit therebetween. The present invention can solve the difficulty that the plugging material cannot easily reside to form a bridge, and effectively improving the plugging success rate.
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公开(公告)号：US10287172B2
公开(公告)日：2019-05-14
申请号：US15527969
申请日：2014-11-19
Inventor： Xiaojun Bao , Yuanyuan Yue , Jinbiao Yang , Haiyan Liu , Pei Yuan
Abstract: The present invention provides a preparation method of Beta molecular sieve, comprising: activating a mineral having low silica-to-alumina ratio and a mineral having high silica-to-alumina ratio, respectively, wherein the mineral having low silica-to-alumina ratio is activated via a sub-molten salt medium, and the mineral having high silica-to-alumina ratio is activated via means of high-temperature calcination; mixing the activated minerals with sodium chloride, potassium chloride, water and template agent for hydrothermal crystallization, wherein the charged amounts of the raw materials satisfies a molar ratio of: 0.03-0.18 Na2O: 0.01-0.03 K2O: 0.1-0.4 (TEA)2O: 1 SiO2: 0.01-0.5 Al2O3: 12-40 H2O; cooling the crystallized product and removing the mother liquor by filtration, washing the resulting filter cake with water to neutral and drying it to obtain the Beta molecular sieve.
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