公开(公告)号：US20210199830A1

公开(公告)日：2021-07-01

申请号：US17133649

申请日：2020-12-24

Applicant: Chengdu University of Technology

Inventor： Xuehua CHEN ,  Jie ZHANG ,  He XU ,  Wei JIANG ,  Xin LUO

IPC: G01V1/36

Abstract: A method of low-frequency seismic data enhancement for improving the characterization precision of a deep carbonate reservoir includes: first performing inversions on an input seismic data set to obtain the corresponding reflection coefficients and average seismic wavelet; then constructing a seismic wavelet with rich low-frequency information; and finally, performing convolution on the seismic wavelet with rich low-frequency information and the reflection coefficients to obtain seismic data with rich low-frequency information and enhanced low-frequency energy. In the present invention, changes of the seismic data in a work area in transverse and longitudinal directions are taken into consideration, and processing parameters can be quickly determined according to actual conditions of the work area to obtain an optimal processing effect. In this way, the characterization quality of geological anomalies, such as a fault, a fracture system, or the like, in a deep carbonate reservoir can be improved significantly.

公开(公告)号：US20220342100A1

公开(公告)日：2022-10-27

申请号：US17721531

申请日：2022-04-15

Applicant: CHENGDU UNIVERSITY OF TECHNOLOGY

Inventor： Huaguo WEN ,  Xin LUO ,  Cai PENG ,  Yun LI ,  Yan WEI

IPC: G01V1/30

Abstract: A method for identifying a reef-shoal reservoir in a faulted lacustrine basin based on a basement structure-paleogeomorphology-seismic facies progressive constraint, including: analyzing a basement structure of a work area; establishing a paleogeomorphology classification standard according to thickness, reflection structure and stratigraphic dip; based on well-seismic calibration and forward modeling, establishing a seismic facies classification standard for reef-shoal facies belts under different paleo-geomorphic conditions, and quantitatively predicting and describing a reservoir in the reef-shoal facies belts using seismic facies-controlled inversion; and according to analysis results of basement structure characteristic, paleogeomorphology classification and seismic facies, establishing a method for predicting a favorable reservoir.

公开(公告)号：US20200158900A1

公开(公告)日：2020-05-21

申请号：US16690050

申请日：2019-11-20

Applicant: Chengdu University of Technology

Inventor： Xuehua CHEN ,  Jie ZHANG ,  Xin LUO ,  Wei JIANG ,  Chen ZHOU ,  Wei XIANG

IPC: G01V1/30

Abstract: The invention relates to petroleum seismic exploration, and more specifically to a method for gas-bearing reservoir characterization using logging information. In the method, logging information is used as a constraint to indirectly characterize the distribution range of the gas-bearing reservoir by determining the upper and lower boundaries. In addition, this method enables the automatic determination of the optimal calculation parameters according to the characteristics of input data, allowing for more accurate results.