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:
Jul. 01, 2025
Filed:
Jun. 18, 2024
Southwest Petroleum University, Chengdu, CN;
Xiandong Jiang, Chengdu, CN;
Nutao Wang, Chengdu, CN;
Chengyang Zhang, Chengdu, CN;
Hang Li, Chengdu, CN;
Min Wei, Chengdu, CN;
Southwest Petroleum University, Chengdu, CN;
Abstract
A method for determining well wall collapse of a single well for a fractured-vuggy reservoir is provided. The method includes following steps: S, treating the single well of the fractured-vuggy reservoir as an isolated reservoir; S, calculating a water influx rate for the fractured-vuggy reservoir; S, substituting a formula of the water influx rate into a material balance equation; S, calculating a change of an oil productivity index without considering the well wall collapse; S, establishing an optimizing model for obtaining the oil productivity index; S, calculating the formation pressure at any time in production through step S; S, calculating the oil productivity index at any time through the formation pressure, and establishing an optimal objective function; and S, calculating a difference between the oil productivity index at any time and the theoretically calculated oil productivity index at any time, and determining whether the difference meets an accuracy requirement.