New York Codes, Rules and Regulations
Title 6 - DEPARTMENT OF ENVIRONMENTAL CONSERVATION
Chapter V - RESOURCE MANAGEMENT SERVICES
Subchapter B - Mineral Resources
Part 556 - Operating Practices
Section 556.6 - Lease and well identification

Any owner or operator of a lease or unit containing one or more producing or producible oil or gas wells shall cause a weatherproof sign to be conspicuously placed where the principal lease road enters the lease or on the tank battery or other lease facilities. Said signs shall show the name of the lease owner or operator, the name of the lease and the lease location as to township. In addition, a legible identifying numeral shall be attached or painted on the wellhead, pumping unit or jack of each well or alternatively, a legible identifying sign shall be placed near each well. In the case of a multiple completion, each wellhead connection shall be appropriately identified.