API 11.1 Calculations

Why API 11.1 Calculations?
Calculate Net Inventory
Assess asset value through one integrated system.
Audit Field Measurement
Ensure accurate post-purchase measurement data.
Validate Flow Computers
Record flow rates with precision and consistency.
Generate Custody Transfer Tickets
Verify crude oil transfers with compliance and ease.
Why FLOWCAL Sets the Standard for Measurement Compliance
Gain confidence in every measurement—streamline audits, reduce risk, and stay ahead of regulatory demands with a system built for your operations.
“It gives you the validation of, I’m going to get the right answer if I use this app.”
- Tim Harwell, Sr. Manager Crude Data Services

4
Methods of utilization
to meet your needs
123
Unique Customers Utilizing API
11.1 Through Quorum Software
80%
North American Midstream Users Depend
on FLOWCAL and the Field Applications
How to Access the API 11.1 Calculations
Available as a secure PDF or a hardcover document.
The Microsoft Windows-based application is designed to calculate the Volume Correction Factor (VCF) tables outlined in API MPMS Ch. 11.1. The VCF application can be used to calculate net corrected volumes quickly and easily.
The subroutines for API MPMS Ch. 11.1 are available in electronic form as a Microsoft Excel add-in, dynamic-link library (DLL), C-Code (source code), or the combined VCF software suite.