North Dakota Administrative Code
Title 33.1 - Department of Environmental Quality
Article 33.1-15 - Air Pollution Control
Chapter 33.1-15-20 - Control of Emissions from Oil and Gas Well Production Facilities
Section 33.1-15-20-01 - General provisions

a. "Actively producing" means a well has been producing for thirty days or more from initial production through the wellhead equipment.

b. "Casinghead gas" means any gas or vapor, or both gas and vapor, indigenous to and produced from a pool classified as an oil pool by the North Dakota state industrial commission.

c. "Completion" means an oil well must be considered completed when the first oil is produced through wellhead equipment into lease tanks from the ultimate producing interval after casing has been run. A gas well must be considered complete when the well is capable of producing gas through wellhead equipment from the ultimate producing zone after casing has been run. A dry hole must be considered complete when all North Dakota state industrial commission provisions of plugging are complied with.

d. "Condensate" means the liquid hydrocarbons recovered at the surface that result from condensation due to reduced pressure or temperature of petroleum hydrocarbons existing in a gaseous phase in the reservoir.

e. "Continuous burning pilot" means a stable auxiliary flame supported by a reliable fuel source which is independent of wellhead production.

f. "Cubic foot of gas" means that volume of gas contained in one cubic foot [28.32 liters] of space and computed at a pressure of fourteen and seven-tenths pounds per square inch [1,034 grams per square centimeter] absolute at a base temperature of sixty degrees Fahrenheit [15.5 degrees Celsius].

g. "Gas well" means a well producing gas or natural gas from a common source of gas supply as determined by the North Dakota state industrial commission.

h. "Natural gas or gas" means and includes all natural gas and all other fluid hydrocarbons not herein defined as oil.

i. "Oil" means and includes crude petroleum oil and other hydrocarbons regardless of specific gravity which are produced at the wellhead in liquid form and the liquid hydrocarbons known as distillate or condensate recovered or extracted from gas, other than gas produced in association with oil and commonly known as casinghead gas.

j. "Oil well" means any well capable of producing oil or oil and casinghead gas from a common source of supply as determined by the North Dakota state industrial commission.

k. "Operator" means any person or persons who, duly authorized, is in charge of the development of a lease or the operation of a producing property.

l. "Owner" means the person who has the right to drill into and produce from a pool and to appropriate the oil or gas the person produces.

m. "Pool" means an underground reservoir containing a common accumulation of oil or gas or both; each zone of a structure which is completely separated from any other zone in the same structure is a pool.

n. "Production facility" means all equipment, wells, flow lines, separators, treaters, tanks, flares, gathering lines, and auxiliary nontransportation-related equipment used in the exploration, development, or subsequent production or handling of oil and gas from an oil or gas well or wells which are located on one or more contiguous or adjacent surface properties, and are under the control of the same person (or persons under common control).

o. "Recomplete" or "recompletion" means the subsequent completion of a well in a different pool from the pool in which it was originally completed.

p. "Reservoir" means pool or common source of supply.