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公开(公告)号：US10739477B2
公开(公告)日：2020-08-11
申请号：US15965438
申请日：2018-04-27
Applicant: PetroChina Company Limited
Inventor： Likang Chen
Abstract: The invention discloses an omnidirectional vector geophone, comprising: eight wave detectors and support structures thereof, the support structures are used for supporting the eight wave detectors such that bottom surfaces of each two wave detectors are on one of regular triangle surfaces of a regular tetrahedron, crossing points of working shafts of the two wave detectors that are on the same regular triangle surface that cross with the regular triangle surface are both on an angular bisector of an angle of the regular triangle surface and are symmetric with respect to the center of the regular triangle surface. In the invention, based on divergence and curl equations of field theory, a particular spatial motion full-vector detection structure is designed to realize detection of full information including frequency, amplitude, phase, vibration direction of the seismic wave field, especially divergence and curl of a wave force field, to form a completely new omnidirectional vector geophone structure.
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22.发明授权公开(公告)号：US10731451B2
公开(公告)日：2020-08-04
申请号：US16284594
申请日：2019-02-25
Applicant: PetroChina Company Limited
Inventor： Yonggui Mei , Quanjiang Zhang , Biyun Zhu , Xianzhi Wang , Jian Guo , Wuchang Zhang , Xiaohua Lian , Shengfa Mao , Zhanxin Xue , Liuping Deng
Abstract: An exploitation method and an exploitation well pattern for coalbed methane in a low-permeability coalbed. The method comprises: determining a maximum principal stress direction in a low-permeability coalbed; disposing at least two large-roadway horizontal wells in the low-permeability coalbed; disposing a plurality of production wells on two sides of a horizontal segment of each of the at least two large-roadway horizontal wells, wherein a diameter of each of the production wells is smaller than a diameter of the horizontal segment; exploiting the coalbed methane in the low-permeability coalbed through the at least two large-roadway horizontal wells and the plurality of production wells. Through the horizontal segments of the large-roadway horizontal wells perpendicular to the maximum principal stress direction, it promotes stress release in low-permeability coalbed to form more fracture channels, thereby improving the exploitation efficiency of the coalbed methane in the low-permeability coalbed.
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公开(公告)号：US10718875B2
公开(公告)日：2020-07-21
申请号：US15965379
申请日：2018-04-27
Applicant: PetroChina Company Limited
Inventor： Likang Chen
Abstract: The invention discloses an omnidirectional vector electrostatic levitation geophone, comprising: a regular tetrahedron hollowed-out structure, and an inner hollowed-out base and an outer hollowed-out base that are provided inside and outside the regular tetrahedron hollowed-out structure and at equal distance from the regular tetrahedron hollowed-out structure, and have the same structure as and different size from the regular tetrahedron hollowed-out structure; the regular tetrahedron hollowed-out structure has a solid part and a hollowed-out part of each surface thereof, the solid part is a quadrangle divided from angular bisectors of two angles on each surface and an isosceles triangle that abuts the solid part by a surface central point, and the hollowed-out part is two triangles that are divided from the angular bisectors of the two angles and abut each other by a surface center. In the invention, a spatial full-vector detection structure is designed, a completely new omnidirectional vector geophone technology is realized, thereby completing detection of full information including frequency, amplitude, phase, vibration direction of the seismic wave field, especially divergence and curl of a wave force field.
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公开(公告)号：US10705238B2
公开(公告)日：2020-07-07
申请号：US15882779
申请日：2018-01-29
Applicant: PetroChina Company Limited
Inventor： Guangrong Zhang , Fusen Xiao , Qi Ran , Shirong Zhang , Yi Yu , Qi Liao , Bo Ma , Han Liang , Kang Chen , Xuan Zhang , Xiaomin Lu
Abstract: The present disclosure discloses a method and an apparatus for processing seismic data, and belongs to the field of geological surveys. The method comprises: stacking seismic trace gathers in a predetermined range among S seismic trace gathers after a Normal Move Out (NMO) correction processing to obtain a model trace, S being an integer; calculating a correlation coefficient of each seismic trace gather with the model trace, and selecting a K-th seismic trace gather with a maximum correlation coefficient; calculating an optimum point of each seismic trace gather from the K-th seismic trace gather to two sides orderly; and performing a residual NMO correction of the seismic trace gathers according to the optimum points.
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25.发明申请公开(公告)号：US20200208045A1
公开(公告)日：2020-07-02
申请号：US16691969
申请日：2019-11-22
Applicant: PetroChina Company Limited
Inventor： Xiangfei GENG , Bin DING , Jianhui LUO , Bo HUANG , Jianyong XIE , Pingmei WANG , Yang GAO , Baoliang PENG
IPC: C09K8/60 , C07C309/49 , C07C303/06
Abstract: The present invention discloses a N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and the synthesis method thereof. It has a structural formula of: and is prepared in a two-step reaction comprising: S1. subjecting 4,4′-diaminodiphenyl ether and bromododecane to an amine alkylation reaction to obtain N,N,N′,N′-tetradodecyl-substituted diphenyl ether; and S2. sulfonating the N,N,N′,N′-tetradodecyl-substituted diphenyl ether with concentrated sulfuric acid to produce the target product, N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate. The surfactant of the present invention has a high surface activity and can be synthesized with a simple procedure under mild reaction conditions, and can be easily separated and purified. The surfactant of the present invention is promising in applications for alkaline/surfactant in tertiary oil recovery, for polymer/surfactant binary compound flooding, alkaline/surfactant/polymer tertiary compound flooding, microemulsion emulsifier, and the like, and may also be compounded with common surfactants to lower the cost, thereby enabling its application in a large scale.
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Patent Agency Ranking
公开(公告)号：US10682619B2
公开(公告)日：2020-06-16
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
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：US10598595B2
公开(公告)日：2020-03-24
申请号：US15693380
申请日：2017-08-31
Applicant: PetroChina Company Limited
Inventor： Hua Tian , Keyu Liu , Caineng Zou , Shuichang Zhang , Shaobo Liu , Xuesong Lu , Junjia Fan , Xiuli Li , Mengjun Zhao , Qingong Zhuo , Yanjie Gong
Abstract: The invention provides a method for determining oil contents in rocks. The method comprises steps of: measuring a plurality of calibration oil samples having different oil contents, and acquiring a holographic fluorescence spectral intensity corresponding to the calibration oil samples; acquiring a fit relation between the holographic fluorescence spectral intensity and the oil contents of the calibration oil, according to the oil contents of the plurality of calibration oil samples and a plurality of three-dimensional fluorescence spectral intensities corresponding thereto; adding a certain amount of the calibration oil after dilution to rocks to be measured, acquiring a sample of the rocks to be measured and performing a holographic fluorescence measurement of the rock sample to be measured; and introducing the holographic fluorescence spectral intensity of the rock sample to be measured to the fit relation, thus an oil content of the rock sample to be measured is obtained. Accordingly, oil is detectable together with an organic solvent without volatilization of the organic solvent, which not only saves time, but also address a low-detection-limit problem for oil content resulting from volatilization of oil when the organic solvent is volatilized in the conventional method.
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28.发明申请公开(公告)号：US20200071184A1
公开(公告)日：2020-03-05
申请号：US16556224
申请日：2019-08-29
Applicant: PETROCHINA COMPANY LIMITED
Inventor： Xu JIN , Jianming LI , He LIU , Hang JIAO , Xiaoqi WANG , Liang SUN , Xiaodan LIU
Abstract: A preparation method of a nanotube hierarchically structured lithium titanate includes the steps of: S1. dispersing a titanium source into an aqueous solution containing lithium hydroxide and hydrogen peroxide and stirring to obtain a mixed solution; S2. subjecting the mixed solution obtained in step S1 to a reaction by heating to obtain a precursor having a nanowire-like structure; S3. subjecting the precursor having a nanowire-like structure obtained in step S2 to separation and drying; S4. subjecting the precursor having a nanowire-like structure after separation and drying to a low-temperature annealing treatment; S5. subjecting the precursor having a nanowire-like structure after the low-temperature annealing treatment to a liquid thermal reaction to obtain the nanotube hierarchically structured lithium titanate. The method includes a simple process and easily controllable process parameters, and may be easily scaled-up for industrial production.
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公开(公告)号：US10578757B2
公开(公告)日：2020-03-03
申请号：US15965503
申请日：2018-04-27
Applicant: PetroChina Company Limited
Inventor： Shitai Dong , Likang Chen , Xiaodong Zheng , Yan Zhang , Zhan'an Xie
Abstract: The invention discloses an omnidirectional vector seismic data processing method and apparatus, a computer readable storage medium and a device, applied to an omnidirectional vector geophone. Wherein the method comprises: collecting omnidirectional vector seismic data of the omnidirectional vector geophone, and performing a pre-processing operation on the omnidirectional vector seismic data; performing pressure and shear waves separation operation on the omnidirectional vector seismic data after the data is subject to the pre-processing operation, to obtain pressure wave data and shear wave data; sequentially performing space vector calculation, a wave field recovery operation and an imaging operation on the pressure wave data and the shear wave data, and then performing modeling to obtain a pressure wave velocity model and a shear wave velocity model. The invention solves the problem of the existing seismic exploration technology that cannot measure and process divergence data and curl data of seismic wave field, so as to improve construction, lithology, fluid exploration accuracy and reliability and promote seismic exploration to be developed from structural exploration to lithology exploration and fluid exploration.
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30.发明申请公开(公告)号：US20200065620A1
公开(公告)日：2020-02-27
申请号：US16506891
申请日：2019-07-09
Applicant: PetroChina Company Limited
Inventor： Zhou Feng , Hongliang Wu , Ning Li , Kewen Wang , Peng Liu , Yusheng Li , Huafeng Wang , Binsen Xu
Abstract: A method and an apparatus for automatically recognizing an electrical imaging well logging facies, wherein the method comprises: acquiring historical data of electrical imaging well logging; pre-processing the historical data of the electrical imaging well logging to generate an electrical imaging well logging image covering a full hole; recognizing a typical imaging well logging facies in the electrical imaging well logging image covering the full hole, and determining the electrical imaging well logging image covering the full hole as a training sample in accordance with a category of the imaging well logging facies; constructing a deep learning model including an input layer, a plurality of hidden layers, and an output layer; training the deep learning model using the training sample to obtain a trained deep learning model; and recognizing the well logging facies of the electrical imaging well logging image of the well section to be recognized using the trained deep learning model.
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