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公开(公告)号：US20200132659A1
公开(公告)日：2020-04-30
申请号：US16389481
申请日：2019-04-19
Applicant: PetroChina Company Limited
Inventor： Guangyou ZHU , Shunlin TANG
Abstract: The present disclosure relates to a method and device for detecting mercury isotopes in crude oil. The device comprises an enrichment-absorption system and a secondary purification-enrichment system for mercury isotopes, wherein the enrichment-absorption system includes an air-background mercury absorption system, a pyrolysis/cracking system, a mercury-sample absorption system connected in series with pipe lines, and a vacuum pump, and the vacuum pump is connected to the mercury-sample absorption system through a pipe line; the secondary purification-enrichment system includes a nitrogen-gas cylinder, a collection bottle with potassium permanganate absorption liquid, and a secondary enrichment-absorption bottle connected in series with pipe lines, wherein the secondary purification-enrichment system further includes a stannous-chloride storage bottle, which is connected to a pipe line between the nitrogen-gas cylinder and the collection bottle with potassium-permanganate absorption liquid via a peristaltic pump and through a pipe line.
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公开(公告)号：US20200071183A1
公开(公告)日：2020-03-05
申请号：US16554862
申请日：2019-08-29
Applicant: PetroChina Company Limited
Inventor： Xu Jin , Jianming Li , Xiaoqi Wang , Hang Jiao , Liang Sun , Xiaodan Liu
Abstract: The present invention provides a nanostructured titanic acid salt and a preparation process and use thereof. The process comprises preparing a dispersion containing titanium peroxy complex; slowly adding a metal compound to the dispersion containing the titanium peroxy complex to form a solution; adding an alcohol to the solution under normal temperature and normal pressure to produce the nanostructured titanic acid salt precursor precipitate in the solution, and separating the precipitate to obtain the titanic acid salt precursor; drying the precursor, and then heat treating it to obtain the nanostructured titanic acid salt product. The present invention provides a process for preparing a titanic acid salt with simple preparation process, easy control for process parameters and easy large-scale industrial production.
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公开(公告)号：US20190293822A1
公开(公告)日：2019-09-26
申请号：US16108848
申请日：2018-08-22
Applicant: PetroChina Company Limited
Inventor： Chuang LI , Jianguo PAN , Hongbin WANG , Jianguo ZHAO , Linjun HUANG , Dong SUN , Chao FENG , Qingzhou YAO , Yanfang GAO
Abstract: The present disclosure disclose a method, an apparatus and a system for eliminating a frequency dispersion effect, wherein the method comprises: testing a core sample to obtain logging band velocities and seismic band velocities under different pressures; fitting a relationship between a stratum pressure and the logging band velocity using the logging band velocities under different pressures, and fitting a relationship between the stratum pressure and the seismic band velocity using the seismic band velocities under different pressures; and eliminating a frequency dispersion effect in a target area using the relationship between the stratum pressure and the logging band velocity and the relationship between the stratum pressure and the seismic band velocity.
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84.发明申请公开(公告)号：US20190276731A1
公开(公告)日：2019-09-12
申请号：US16240107
申请日：2019-01-04
Applicant: PetroChina Company Limited
Inventor： Lijun Mu , Xianwen Li , Hongjun Lu , Zhiying Deng , Yong Wang , Bin Yao , Zhenning Ji , Suiwang Zhang , Xiaobing Lu , Zhaojie Song , Erzhen Wang , Lei Sui
Abstract: The present disclosure provides a diverting agent for diversion acidizing in water injection wells and a preparation method thereof. The diverting agent for diversion acidizing in water injection wells has a raw material composition including: 3%-6% of ethylenediamine, 12%-25% of bromododecane, 10%-20% of a solvent, 10%-20% of an assistant, 14%-28% of oleic acid, 5%-10% of stearic acid salt, 1%-2% of a dispersing agent and a balance of water. The present disclosure also provides a method for preparing the above-mentioned diverting agent for diversion acidizing in water injection wells. The diverting agent for diversion acidizing in water injection wells of the present disclosure can be used for temporary plugging diverting of acid solution in on-line acidification of water injection wells or in acidification operation of oil reservoir with a greater heterogeneity, which has good compatibility with the acid solution and can be used for temporary plugging of high-permeability zones.
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85.发明申请公开(公告)号：US20190265142A1
公开(公告)日：2019-08-29
申请号：US16062309
申请日：2017-04-19
Applicant: PetroChina Company Limited
Inventor： Zhonghua Liu , Lianteng Song , Haitao Zhang , Jixin Deng , Xia Li , Chao Yuan , Xiaoming Yang , Xiangzhi Cheng
Abstract: A method for obtaining a conversion relationship between dynamic and static elastic parameters includes: Step S1, acquiring horizontal cores at different depths of the destination formation; Step S2, measuring the dynamic elastic parameters of the horizontal core under different pressures; Step S3, measuring the static elastic parameters of the horizontal core under different pressures; Step S4, measuring the clay content of the horizontal core; Step S5 establishing a function relationship of the ratio between the dynamic and static elastic parameters with the formation pressure and clay content; and completing the conversion between the dynamic and static elastic parameters. The technical solution provided by the present invention takes full account of the influence of the formation stress and the clay content on the conversion rule of dynamic and static elastic parameters and is of great significance for improving the logging evaluation accuracy of rock mechanical parameters.
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Patent Agency Ranking
86.发明申请公开(公告)号：US20190137648A1
公开(公告)日：2019-05-09
申请号：US16095432
申请日：2017-05-15
Applicant: PETROCHINA COMPANY LIMITED
Inventor： Ning LI , Kewen WANG , Yujiang SHI , Hongliang WU , Taiping ZHAO , Qingfu FENG , Zhou FENG , Haitao ZHANG , Baoding ZHU , Xiaoming YANG
Abstract: The present application provides a method and a system for determining a saturation exponent of a heterogeneous carbonate reservoir. The method comprises: dividing a target reservoir into at least two reservoir types in accordance with a predetermined rule; obtaining a correspondence relationship between a saturation exponent and a bound water saturation in each of the reservoir types; determining the reservoir type to which a to-be-measured core belongs in accordance with the predetermined rule; obtaining a bound water saturation of the to-be-measured core; and calculating the saturation exponent of the to-be-measured core according to the bound water saturation of the to-be-measured core on the basis of the correspondence relationship of the reservoir type to which the to-be-measured core belongs.
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87.发明申请公开(公告)号：US20190113649A1
公开(公告)日：2019-04-18
申请号：US16157480
申请日：2018-10-11
Applicant: PetroChina Company Limited
Inventor： Hua TIAN , Shuichang ZHANG , Shaobo LIU , Caineng ZOU , Keyu LIU , Xuesong LU , Mengjun ZHAO , Lin JIANG , Xingzhi MA , Bin ZHANG , Junjia FAN , Peiqiang YANG
IPC: G01V3/32 , G01N24/08 , G01R33/561 , G01R33/44 , G01R33/54 , G01R33/483
Abstract: A method and an apparatus for measuring oil content of a tight reservoir based on nuclear magnetic resonance includes applying a pulse sequence to a tight reservoir rock, and after applying a first pulse and a last pulse in the pulse sequence, applying a gradient magnetic field to the tight reservoir rock, respectively, directions of the two applied gradient magnetic fields being opposite to each other, wherein the pulse sequence is composed of three 90° pulses; acquiring a nuclear magnetic resonance signal of the tight reservoir rock; and determining oil content of the tight reservoir rock according to an intensity of the nuclear magnetic resonance signal. The method can accurately distinguish an oil phase nuclear magnetic resonance signal and a water phase nuclear magnetic resonance signal in nanopores of tight reservoir rock, thereby effectively improving the accuracy of the detection result of the oil content of the tight reservoir rock.
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88.发明申请公开(公告)号：US20190046939A1
公开(公告)日：2019-02-14
申请号：US15941712
申请日：2018-03-30
Applicant: PetroChina Company Limited
Inventor： Jianhui Luo , Bo Jiang , Lipeng He , Pingmei Wang , Baoliang Peng , Jie Yang , Bin Ding , Yuanyang Li , Xiangfei Geng
IPC: B01F17/54
Abstract: The present invention provides a nano-silica dispersion having amphiphilic properties and a double-particle structure and its production method. The production method comprises: producing a lipophilically modified nano-silica alcosol which is denoted as a first reaction solution by adding a silane coupling agent containing a lipophilic group to a nano-silica alcosol as a raw material; producing a hydrophilically modified nano-silica alcosol which is denoted as a second reaction solution by adding a silane coupling agent containing a hydrophilic group into a nano-silica alcosol as a raw material; producing the nano-silica dispersion having amphiphilic properties and a double-particle structure by adding 3-aminopropyltriethoxysilane to the first reaction solution, stirring, then mixing the resultant with the second reaction solution. The present invention further provides a nano-silica dispersion having amphiphilic properties and a double-particle structure produced by the above production method. It has both hydrophilic and lipophilic properties, and has the double-particle structure, with a particle size of less than 100 nm. The production process is simple and low in cost.
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公开(公告)号：US20180372892A1
公开(公告)日：2018-12-27
申请号：US16016710
申请日：2018-06-25
Inventor： Dewen ZHENG , Zhide WU , Guosheng DING , Huayin ZHU , Jianfeng LIU , Lina RAN , Tong LIN
IPC: G01V1/135
Abstract: The invention discloses a monitoring system for deformations and destructions of a gas storage, including an acoustic emission sensor installed in a borehole of a monitored rock mass and a ground workstation. The acoustic emission sensor includes an acoustic emission probe and a probe installation mechanism for installing the acoustic emission probe and a transmission mechanism for transmitting the probe installation mechanism. The probe installation mechanism includes a shell, a probe sleeve and two sets of pistons hydro-cylinder components. The present invention realizes the control of the moving direction of the shell and the probe sleeve by the piston hydro-cylinder component and the hydraulic pump, thus solving the problem of effective installation and coupling of the acoustic emission probe, ensuring the effective coupling between the acoustic emission probe and the wall of the borehole.
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公开(公告)号：US20180246999A1
公开(公告)日：2018-08-30
申请号：US15749290
申请日：2016-10-10
Applicant: PetroChina Company Limited
Inventor： Zhou Feng , Ning Li , Hongliang Wu , Huafeng Wang , Qingfu Feng , Kewen Wang
CPC classification number: G06F17/5009 , E21B41/0092 , E21B49/00 , E21B49/02 , G01V99/00 , G06F17/50
Abstract: The present invention provides a stratum component optimization determination method and device, which fall within the technical field of oil-gas exploration well logging. The method comprises: establishing a stratum rock component model according to core analysis data and geological conditions of a stratum to be detected, and determining a well logging curve determined by a participation model; determining a well logging response equation expression corresponding to the well logging curve determined by the participation model; parsing, recording and storing the well logging response equation expression, establishing a target function of an optimization problem, and solving the target function through an iteration algorithm to determine an optimal component content of the stratum to be detected. By establishing the stratum rock component model, determining corresponding well logging response equation, and parsing through an expression parsing method and recording and storing the well logging response equation expression, and then, establishing the target function of the optimization problem, and obtaining the optimal component content of the stratum to be detected through the iteration algorithm, the present invention can not only optimizes the self-defined well logging response equation expression of the user, but achieves a high processing precision.
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