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公开(公告)号：US10801302B2
公开(公告)日：2020-10-13
申请号：US16533468
申请日：2019-08-06
Applicant: China University of Petroleum—Beijing
Inventor： Jin Yang , Qishuai Yin , Shanshan Shi
Abstract: The present invention provides an inner start-up tool of a conduit bearing capacity reinforcing device and a using method thereof, the inner start-up tool comprising: an outer cylinder in which a pressure bearing disc is axially movably provided, a lower end of the pressure bearing disc being elastically connected with a balance block, and a first ring block and a second ring block being movably diametrically disposed through a lower cylinder walls of the outer cylinder; a first link mechanism having a first vertical rod and a first horizontal rod rotatably connected to the first vertical rod, the first vertical rod being rotatably connected to the balance block, the first horizontal rod being rotatably connected to the first ring block; a second link mechanism having a second vertical rod and a second horizontal rod rotatably connected to the second vertical rod, the second vertical rod being rotatably connected to the balance block, the second horizontal rod being rotatably connected to the second ring block. The inner start-up tool of the conduit bearing capacity reinforcing device and the using method thereof according to the present invention can be used for efficiently operating the conduit bearing capacity reinforcing device, is simple in structure and convenient in use.
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公开(公告)号：US20200278069A1
公开(公告)日：2020-09-03
申请号：US16870830
申请日：2020-05-08
Applicant: CHINA UNIVERSITY OF PETROLEUM-BEIJING
Inventor： Yi Xiong , Da Yu , Kunpeng Zhao
Abstract: The disclosure provides a pipeline deformation detection PIG, including: a detection body and a foam body; the detection body is arranged in the foam body, and the detection body includes: a pressure sensing element; and the pressure sensing element includes: a pressure sensor and a pressure coupling unit. The detection body of the pipeline deformation detection PIG of the present disclosure is provided in the foam body, the inner side surface of the pressure coupling unit is in contact with the force receiving surface of the pressure sensor, and the outer side surface is in contact with the inner wall of the pipeline to be detected, the pressure coupling unit can translate the pipeline deforms into pressure according to coupling deformation, and meanwhile solve the stuck problem of the existing detection PIG in a large deformation pipeline.
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83.发明申请公开(公告)号：US20200263511A1
公开(公告)日：2020-08-20
申请号：US16761497
申请日：2018-11-12
Applicant: China University of Mining and Technology , XUZHOU OLIVINE GEOSCIENCE & GEOTECH CO., LTD , CHINA UNIVERSITY OF PETROLEUM, EAST CHINA , ANHUI UNIVERSITY OF SCIENCE AND TECHNOLOGY , WUHAN INSTITUTE OF TECHNOLOGY
Inventor： Shuxun SANG , Xiaozhi ZHOU , Liweng CAO , Shiqi LIU , Haiwen WANG , Huihu LIU , Zicheng LI , Jinlong JIA , Huazhou HUANG , Changjiang LIU , Hongjie XU , Ran WANG , Shuyun ZHU
Abstract: A simulation test method for gas extraction from a tectonically-deformed coal seam in-situ by depressurizing a horizontal well cavity. A coal series stratum structure reconstruction and similar material simulation subsystem simulates a tectonically-deformed coal reservoir. A horizontal well drilling and reaming simulation subsystem constructs a U-shaped well in which a horizontal well adjoins a vertical well, and performs a reaming process on a horizontal section thereof. A horizontal well hole-collapse cavity-construction depressurization excitation simulation subsystem performs pressure-pulse excitation and stress release on the horizontal well, and hydraulically displaces a coal-liquid-gas mixture such that the mixture is conveyed towards a vertical well section. A product lifting simulation subsystem further pulverizes the coal and lifts the mixture. A gas-liquid-solid separation simulation subsystem separates the coal, liquid and gas. A monitoring and control subsystem detects and controls the operation and the execution processes of equipment in real time.
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公开(公告)号：US20200181478A1
公开(公告)日：2020-06-11
申请号：US16212529
申请日：2018-12-06
Applicant: CHINA UNIVERSITY OF PETROLEUM - BEIJING
Inventor： LIZHI XIAO , INFANT RAJ , GUANGZHI LIAO
Abstract: The invention provides a modified MoS2 nano material and a preparation method thereof. The modified MoS2 nanomaterial is comprised of a hydrophilic MoS2 nanosheet linked with hydrophobic alkyl amine chain, the hydrophobic alkyl amine chain is provided by an alkylamine compound. The modified MoS2 nano material provided by the invention can be formulated into a nanofluid i.e. oil-displacement agent at a lower concentration, and is applied to the tertiary recovery in oil recovery, thereby greatly reducing the environmental pollution in the tertiary recovery, reducing the cost and improving the oil recovery.
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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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Patent Agency Ranking
公开(公告)号：US10647902B1
公开(公告)日：2020-05-12
申请号：US16394753
申请日：2019-04-25
Applicant: China University of Petroleum (East China)
Inventor： Weian Huang , Jingwen Wang , Ming Lei , Jiaqi Zhang , Gongrang Li , Kaihe Lv , Xiongjun Wu , Zhengsong Qiu
Abstract: The present invention discloses temporary plugging agent for drilling fluid and preparation method thereof, and water-based drilling fluid and use thereof. The temporary plugging agent for drilling fluid is obtained by controlling gelatinized starch and a vinyl grafted monomer to have a polymerization reaction in an activator solution in the presence of a cross-linking agent and an initiator; the vinyl grafted monomer comprises acrylic acid, acrylamide, and 2-acrylamide-2-methyl propanesulfonic acid; the gelatinized starch is obtained by adding starch into deionized water to have a gelatinization reaction.
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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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90.发明申请公开(公告)号：US20200003751A1
公开(公告)日：2020-01-02
申请号：US16455789
申请日：2019-06-28
Applicant: China University of Petroleum (East China)
Inventor： Xiaorong LI , Chuanliang YAN , Yang LI , Yuanfang CHENG , Zhongying HAN , Benjian SONG , Xiaohui ZHOU
Abstract: A laboratory device for simulating the cement sheath consolidation in the frozen soil strata includes the main body, the pressure system and the measuring system. The main body includes the fixing plate, the detachable plate and the base plate. The circular hole is provided in the center of the base. The central column or the heat insulating casing is mounted on the base through the circular hole. The fixing plate, the detachable plate, the base plate and the central column or the heat insulating casing form a cavity for preparing the core and the cement sheath. During use, the device is placed in a low temperature context, and then the frozen soil core with a hollow cylinder can be artificially fabricated. Further, the heat insulating casing holder is placed, and the cement is added to simulate the state of the cement sheath consolidation under the actual strata conditions.
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