Calibrating a diversion model for a hydraulic fracturing well system
US11449645B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2019 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Sep 13, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The disclosure presents a process for calibrating a diversion model for a treatment stage of a hydraulic fracturing well site. The process can pump a portion of the proppant into the wellbore, flush the wellbore with clean HF fluid, and then perform a diagnostic test to determine a near-wellbore (NWB) flow resistance parameter. Next, diverter material can be distributed into the wellbore and the amount of diverter material delivered to each active perforation cluster can be estimated. A second diagnostic test can be performed followed by computing diversion model parameters such as a near-wellbore zone length parameter for perforation clusters capable of receiving HF fluid. In another aspect, a system is disclosed that can direct operations of a well site pump and collect data from surface and downhole diagnostic sensors, and then use the collected data for the diversion model calibration process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.