Education & Industry Service

International School of Hydrocarbon Measurement

W.L. Walker Co. has supported the International School of Hydrocarbon Measurement for generations through school leadership, committee service, technical instruction, exhibits, and hands-on petroleum measurement experience.

Hydrocarbon Measurement Education

ISHM remains one of the petroleum industry’s most important forums for hydrocarbon measurement education. The school brings together measurement professionals, instructors, exhibitors, standards participants, and field personnel to support practical training in oil and gas measurement.

ISHM Front Desk Cox Center watercolor by Anne W. Brackett
International School of Hydrocarbon Measurement
Watercolor by Anne W. Brackett
W.L. Walker & ISHM

A Longstanding Commitment

For decades, the Walker family and W.L. Walker Co. have participated in ISHM as instructors, committee members, exhibitors, and supporters of practical measurement education. That involvement reflects the company’s broader commitment to accurate custody transfer and field measurement.

Anne Walker Brackett

Leadership, Instruction & Service

Anne Walker Brackett served the school and the measurement community for many years, helping carry forward W.L. Walker’s role in petroleum measurement education. Her work connected practical field experience with standards-based instruction and support for the school’s mission.

John Brackett

Continuing the Work

John Brackett continues W.L. Walker’s involvement in hydrocarbon measurement education through API and ASTM standards work, ISHM participation, and support of field-focused training for petroleum measurement professionals.

Training Topics

Measurement Areas We Support

  • Manual tank gauging and field measurement practice
  • Temperature determination and portable electronic thermometers
  • Hydrometers, density, and laboratory measurement support
  • Crude oil sampling and custody transfer equipment
  • Centrifuge testing for sediment and water
  • Traceability, verification, and standards-based procedures
99th School

2026 School Attendance

The 2026 International School of Hydrocarbon Measurement marked the 99th school and welcomed 1,774 attendees, continuing ISHM’s role as a major training and technical exchange event for the hydrocarbon measurement community.

100th School

Looking Ahead to 2027

The next International School of Hydrocarbon Measurement is scheduled for mid-May 2027 and will mark the 100th school. Registration and event updates are available through the official ISHM website.

Why ISHM Matters: Hydrocarbon measurement depends on trained people, repeatable procedures, practical field knowledge, and equipment that supports defensible measurement. ISHM helps connect those pieces through classroom instruction, exhibits, proceedings, and direct industry participation.
W.L. Walker’s Role: W.L. Walker’s continued participation in ISHM reflects the company’s broader commitment to petroleum measurement standards, custody transfer practice, temperature determination, gauging, sampling, density measurement, and sediment and water testing.
Technical Resources & Registration

ISHM Papers, References & 100th School Registration

Continue your research through W.L. Walker’s industry resource page, visit the Measurement Library for technical papers and proceedings, or go directly to ISHM for registration and school updates.

W.L. Walker Resources

Industry Resources

View curated links to API MPMS terms, API standards, ASTM petroleum standards, Measurement Library references, and other petroleum measurement resources.

View Industry Resources
External Library

Measurement Library

Visit the Measurement Library to search flow measurement papers, school proceedings, and technical references related to hydrocarbon measurement.

Visit Measurement Library
ISHM 2027

100th ISHM Registration

Visit the official ISHM website for registration, school dates, exhibitor information, proceedings, lodging, and updates for the 100th International School of Hydrocarbon Measurement.

Visit ISHM.info
Note: ISHM and Measurement Library are external resources. Registration, proceedings, school dates, document access, and event details are managed by their respective organizations.