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公开(公告)号：US11353442B2
公开(公告)日：2022-06-07
申请号：US16663616
申请日：2019-10-25
Applicant: PetroChina Company Limited
Inventor： Xuan Xu , Xizhe Li , Yong Hu , Yongxin Han , Yunsheng Wei , Yujin Wan , Chunyan Jiao , Zhenhua Guo , Haifa Tang , Weigang Huang , Guangzhen Chu , Yunhe Su
Abstract: The invention provides a physical simulation experimental device and method for water invasion and drainage gas recovery in gas reservoir, and the experimental device includes: a heterogeneous reservoir model having a first core holder, a second core holder, a third core holder and a fourth core holder, wherein the third core holder is connected between the first core holder and the second core holder, and the fourth core holder is connected between an outlet end of the first core holder and an outlet end of the second core holder; a gas injection mechanism having a gas injection bottle and a gas injection cylinder; a water body simulation mechanism having a water storage tank and a water injection pump. The invention can simulate and reveal different drainage gas recovery modes, timings, scales and their influences on the recovery ratio of the gas reservoir.
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12.发明授权公开(公告)号：US11313223B2
公开(公告)日：2022-04-26
申请号：US16470539
申请日：2018-12-10
Applicant: PETROCHINA COMPANY LIMITED
Inventor： Hongliang Wu , Ning Li , Zhou Feng , Changlin Lan , Tao Lv , Kewen Wang , Qingfu Feng
Abstract: A gamma ray spectrum unfolding method for elemental capture spectroscopy logging and a device therefor including the steps of first preprocessing the data obtained from an elemental capture spectrometry instrument; constructing a primary element group and an auxiliary element group according to the degree of interactions among the elements via theoretical analysis and numerical calculation of spectrum profiles, characteristic peak channels, and backgrounds of different elements; unfolding by using the least square method based on the construction of the primary element group and the auxiliary element group; and finally reconstructing the spectrum based on theory according to the yield of each element obtained by unfolding with the least square method, and comparing the measured gamma ray spectrum with the reconstructed gamma ray spectrum for error control, thereby improving the spectrum unfolding precision.
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13.发明授权公开(公告)号：US11175207B2
公开(公告)日：2021-11-16
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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公开(公告)号：US11010629B2
公开(公告)日：2021-05-18
申请号：US16507270
申请日：2019-07-10
Applicant: PetroChina Company Limited
Inventor： Zhou Feng , Ning Li , Hongliang Wu , Kewen Wang , Peng Liu , Yusheng Li , Huafeng Wang , Chen Wang
Abstract: A method and an apparatus for automatically extracting image features of electrical imaging well logging, wherein the method comprises the steps of: 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 and marking a typical geological feature in the electrical imaging well logging image covering the full hole, obtaining a processed image, and determining the processed image as a training sample according to types of the geological features; 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; using the trained deep learning model, recognizing type of a geological feature of an electrical imaging well logging image of a well section to be recognized, and performing morphological optimization processing on the recognition result to obtain a feature optimization recognition result. The solution can automatically, quickly and accurately recognize the typical geological features in the electrical imaging well logging image.
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公开(公告)号：US11008830B2
公开(公告)日：2021-05-18
申请号：US16529694
申请日：2019-08-01
Applicant: PetroChina Company Limited
Inventor： Gaixing Hu , Hongjun Lu , Bin Yao , Yafeng Ju , Jiuzheng Yu , Lingzhi Yang , Fuwei Bi , Zijian Wang , Loulou Li
Abstract: The present invention provides a stratified waterflooding apparatus, which comprises: a water distribution unit, which comprises two water distributors, the water distributor having an inner side wall and an outer side wall, the inner and outer side walls forming a first annular cavity therebetween and being respectively provided with a water inlet and a water outlet which are communicated with the first annular cavity, the first annular cavity accommodates a driving mechanism and an adjustable blocking member, the adjustable blocking member having a first operating position in which it blocks the water inlet or the water outlet and a second operating position in which it releases the blocking of the water inlet and the water outlet; and a controller in communication connection with the driving mechanism. The stratified waterflooding apparatus can realize intelligent and automatic regulation of an aperture of the water distributors in the stratified waterflooding process.
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Patent Agency Ranking
公开(公告)号：US10995599B2
公开(公告)日：2021-05-04
申请号：US16508752
申请日：2019-07-11
Applicant: PetroChina Company Limited
Inventor： Lianhua Hou , Caineng Zou , Suyun Hu , Jinhua Fu , Xianyang Liu , Xia Luo , Jinghong Wang , Lijun Zhang , Senhu Lin , Zhi Yang , Songtao Wu , Jingwei Cui
Abstract: Embodiments of the present disclosure disclose a shale oil in-situ lightening development method, apparatus and system, wherein the method comprises: determining an effective shale interval according to an interval with a total organic carbon greater than a first lower limit value in a target stratum; determining a favorable region for shale oil in-situ lightening development according to a thickness of the effective shale interval and an effective layer thickness ratio, wherein the effective layer thickness ratio includes a ratio of the thickness of the effective shale interval to a thickness of a shale section, and the shale section includes the effective shale intervals and interlayers therebetween. By utilizing the embodiments of the present disclosure, the benefit of the shale oil in-situ lightening development can be improved.
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17.发明申请公开(公告)号：US20210010368A1
公开(公告)日：2021-01-14
申请号：US16830723
申请日：2020-03-26
Applicant: PetroChina Company Limited
Inventor： Chuan HAI , Chengwen XIAO , Qiang CHEN , Shengqiang ZHANG , Zhenyuan LUO , Peng LIU , Ni LIU , Hongbo GUO
IPC: E21B47/047 , G01V9/00 , E21B47/06 , E21B47/022 , G01N33/28
Abstract: The present invention provides a method and an apparatus for determining an oil-gas-water interface based on the formation pressure equivalent density. The method comprises determining working parameters of the wireline modular formation tester based on the acquired conventional logging data of a block to be studied; acquiring a series of formation pressure and corresponding depth data based on the working parameter; computing formation pressure equivalent densities at different depths based on the formation pressure and the corresponding depth data; drawing a crossplot of the formation pressure equivalent density and the depth according to the formation pressure equivalent density and the corresponding depth data at the different depths; and determining the oil-gas-water interface according to the position of breaking point of the formation pressure equivalent density on the crossplot of the formation pressure equivalent density and the depth.
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18.发明授权公开(公告)号：US10884155B2
公开(公告)日：2021-01-05
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: G01N24/08 , G01R33/483 , G01R33/44 , G01R33/54 , G01R33/561 , G01R33/31 , G01R33/48 , G01R33/563 , G01V3/32
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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19.发明申请公开(公告)号：US20200326442A1
公开(公告)日：2020-10-15
申请号：US16843152
申请日：2020-04-08
Applicant: PetroChina Company Limited
Inventor： Mingjun Su , Zhong Hong , Qingyun Han , Tao Deng , Xiangli Cui , Feng Qian , Guangmin Hu , Yunze Xu
Abstract: There is disclosed in the present disclosure a seismic full horizon tracking method, a computer device and a computer-readable storage medium. The method includes: acquiring three-dimensional seismic data; extracting horizon extreme points from the three-dimensional seismic data to construct a sample space; equally dividing the sample space into a plurality of sub-spaces with overlapping portions, and performing a clustering process on the horizon extreme points in each sub-space to obtain horizon fragments corresponding to each horizon of the three-dimensional seismic data; establishing a topological consistency between the horizon fragments; and fusing the horizon fragments corresponding to each horizon of the three-dimensional seismic data based on the topological consistency, to obtain a full horizon tracking result of the three-dimensional seismic data. In the disclosure, a layer crossing phenomenon occurring in seismic full horizon tracking can be avoided, and a better full horizon tracking effect can be achieved.
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公开(公告)号：US10759819B2
公开(公告)日：2020-09-01
申请号：US16412768
申请日：2019-05-15
Applicant: PETROCHINA COMPANY LIMITED
Inventor： Jianhui Lou , Yongge Wei , Bin Ding , Jiangwei Zhang , Pingmei Wang , Jin Zhang , Xiangfei Geng , Zheyu Wei , Baoliang Peng , Lipeng He
IPC: C07F11/00
Abstract: The present disclosure provides a single-side modified β-Anderson-type heteropolymolybdate organic derivative having an anionic moiety with a general formula represented by: β-{[RC(CH2O)3]M(OH)3Mo6O18}3−; β represents a non-planar folded structure; R=substituted or unsubstituted phenyl, CnH2nX (n is an integer from 0 to 22; X═H, OH, NH(CH2)3SO3H, NHCH2COOH, NH2, or NO2); M=Cr3+. The single-side modified β-Anderson-type heteropolymolybdate organic derivative can be prepared under hydrothermal conditions.
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