The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2020
Filed:
Aug. 09, 2019
China University of Petroleum (Beijing), Beijing, CN;
China University of Petroleum (Beijing), Beijing, CN;
Abstract
The present disclosure provides a horizontal fracture prediction method, device and equipment. The method comprises: acquiring primary wave velocities and shear wave velocities of first and second incidence angle directions of seismic waves at a target fracture location, wherein a first incidence angle is smaller than a second incidence angle, and the incidence angles are included angles between propagation directions of the seismic waves and a surface normal direction of a target fracture; calculating a first primary wave/shear wave velocity ratio and a first shear wave splitting (SWS) coefficient of the first incidence angle direction; calculating a second primary wave/shear wave velocity ratio of the second incidence angle direction; and determining that the target fracture is a horizontal fracture under the condition that the first SWS coefficient is smaller than a first preset value and a ratio of the first primary wave/shear wave velocity ratio to the second primary wave/shear wave velocity ratio is smaller than a second preset value. According to embodiments of the present disclosure, whether the target fracture is the horizontal fracture or not is determined through calculating the primary wave/shear wave velocity ratio and the first SWS coefficient of the first incidence angle direction and the primary wave/shear wave velocity ratio of the second incidence angle direction, so that effective data are provided for exploration and development of coal-bed gas and shale gas.