FOREWORD This Model Form of Unit Agreement@ as well as the Model Form of Unit Operating Agreement@ has been formulated by the Subcommittee on Unit Agreements (of the API Steering Committee on Production Practice)@ composed of operating and legal representatives from all producing areas of the United States.
API 416-1957 history
1974API 416-1974 MODEL FORM OF UNIT OPERATING AGREEMENT FOR STATUTORY UNITIZATION (FIRST EDITION; Includes Supplement)
1970API 416-1970 MODEL FORM OF UNIT OPERATING AGREEMENT (Third Edition; Supp 1: May 1974)
1961API 416-1961 MODEL FORM OF UNIT OPERATING AGREEMENT (Second Edition; Incorporates Supplement: 01/1961)
1957API 416-1957 MODEL FORM OF UNIT AGREEMENT (First Edition)