Southwest Petroleum University

University of Electronic Science and Technology of China

China University of Geosciences (wuhan)

Xuri Huang

Lei Chen

Kun Zhang

Xueying Wang

Xinyang He

Bin Li

Yipeng Liu

Fengli Han

Hengfeng Gou

Xuefei Yang

Jingru Ruan

Shu Jiang

Xiong Ding

Jun Peng

Pei Liu

Binsong Zheng

Jinhua Liu

Xuejiao Yuan

Haoyuan Li

Mengyu Ren

Moyan Li

Xinwang Li

Hong Liu

Xiangyu Fan

Weiping Cao

Ran Yang

Hu Zhao

Mengcheng Li

Xiaoqing Cui

Luo Li

Sheng Yang

The present disclosure discloses a denoising method and a system for preserving amplitude variation with offset (AVO) features of pre-stack seismic data. The method includes: acquiring seismic wave data at at least one receiving point through a seismic signal acquisition device, and storing the seismic wave data in a memory; in response to ending of an acquisition operation of the seismic signal with the seismic signal acquisition device, determining, based on the seismic wave data in the memory, pre-denoising angle gather data through a processing device; and obtaining and outputting a denoised angle gather signal through inputting the pre-denoising angle gather data to a denoising device and performing denoising processing on the pre-denoising angle gather data based on the denoising device. In the present disclosure, an abnormal signal is identified in the memory, then the angle gather signal is denoised, and a user also use a user terminal to view signals before and after denoising and compare a denoising effect, which can improve denoising efficiency and accuracy.

Denoising methods and systems for preserving amplitude variation with offset (AVO) features of pre-stack seismic data

Provided is an analysis method for determining gas-bearing situation of an unknown shale reservoir, includes: S, selecting a shale reservoir of a target interval of a place; and collecting data of parameters of cores of each of a known gas-bearing shale reservoir A and a known water-bearing shale reservoir B; S, calculating average values of the parameters of each of the reservoirs A and B respectively; S, calculating average differences of the parameters of each of the reservoirs; S, calculating covariance values of the parameters of each of the reservoirs; S, establishing, according to the covariance values, an equation group and resolving discriminant coefficients; S, establishing a discriminant equation according to the discriminant coefficients and solving a discriminant index; and S, obtaining values of parameters of cores of a sample of the unknown shale reservoir, calculating a discriminant value, and determining gas-bearing situation of the unknown shale reservoir.

Analysis method for determining gas-bearing situation of unknown shale reservoir

Growing community of inventors

Chengdu, China

Xuri Huang