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公开(公告)号：US11175422B2
公开(公告)日：2021-11-16
申请号：US16023226
申请日：2018-06-29
Applicant: PetroChina Company Limited
Inventor： Yongqiang Qu , Jianguo Pan , Lu Yin , Guodong Wang , Duonian Xu , Tuanyu Teng , Bin Wang , Jianhua Qu , Dezi Li , Linjun Huang , Yongping Ma , Xuezhen Chen
Abstract: Identifying a low permeable conglomerate diagenetic trap can be implemented according to a method that comprises: determining a first relation curve between a depth and a critical physical property of a known diagenetic trap in a target work area, and a second relation curve between a reservoir physical property of the known diagenetic trap and a designated seismic attribute; determining a third relation curve between the depth and the critical physical property in the target work area and the designated seismic attribute according to the first relation curve and the second relation curve; and performing a diagenetic trap identification of the target work area according to the third relation curve. Identification accuracy of a low permeable conglomerate diagenetic trap can thereby be improved.
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公开(公告)号：US10921477B2
公开(公告)日：2021-02-16
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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公开(公告)号：US20190041535A1
公开(公告)日：2019-02-07
申请号：US15878254
申请日：2018-01-23
Applicant: PetroChina Company Limited
Inventor： Chao Feng , Tuanyu Teng , Qingzhou Yao , Delong Ma , Han Zhang , Lu Yin , Linjun Huang
Abstract: A method and device of identifying a fracture are provided in the embodiments of the present application. The method comprises: determining three components of structure quantification for each data point in a seismic data volume; constructing a structure quantification matrix of the data point according to the three components of structure quantification for each of the data points; determining feature value and feature vector of the structure quantification matrix of each of the data points; determining fracture attribute value of the data point according to the feature value and feature vector of the structure quantification matrix of each of the data points; constructing a data volume of the fracture attribute according to the fracture attribute values of respective data points; and performing a fracture extraction for the data volume of the fracture attribute according to the feature vectors of the structure quantification matrix of the respective data points. The embodiments of the present application can improve the accuracy of identifying a minor fracture, so as to realize an effective identification of the minor fracture.
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