Start of Injection Line

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The Start of Injection line is located on the Data Chart on the Production Editor tab.

The Minifrac Models section contains a brief discussion about the placement of the start of the injection line. The Start of Injection line is usually placed at breakdown; however, some people prefer to place it after the wellbore fill-up. The placement of the Start of Injection line impacts the time functions for Pre-Closure and the Nolte After-Closure Analyses. In addition, the injected volume is calculated as the cumulative injection from the Start of Injection line to shut-in. The injected volume is used in the Nolte and Soliman / Craig After-Closure Analyses and the Soliman / Craig models.