TITLE 62: MINING
CHAPTER I: DEPARTMENT OF NATURAL RESOURCES
PART 240 THE ILLINOIS OIL AND GAS ACT
SUBPART A: GENERAL PROVISIONS
Section 240.10 Definitions
Section 240.20 Prevention of Waste (Repealed)
Section 240.30 Jurisdiction (Repealed)
Section 240.40 Enforcement of Act (Repealed)
Section 240.50 Delegation of Authority (Repealed)
Section 240.60 Right of Inspection (Repealed)
Section 240.70 Right of Access (Repealed)
Section 240.80 Sworn Statements (Repealed)
Section 240.90 Additional Reports (Repealed)
Section 240.100 When Rules Become Effective (Repealed)
Section 240.110 Notice of Rules (Repealed)
Section 240.120 Forms (Repealed)
Section 240.125 Notice
Section 240.130 Hearings--Notices (Repealed)
Section 240.131 Unitization Hearings
Section 240.132 Integration Hearings
Section 240.133 Hearings to Establish Pool-Wide Drilling Units
Section 240.134 Lease Validation Petitions
Section 240.135 Falsification or Misstatement of Information
Section 240.140 Notice of Noncompliance
Section 240.150 Notice of Violation
Section 240.155 Civil Complaint
Section 240.160 Director's Decision
Section 240.170 Cessation Order (Repealed)
Section 240.180 Enforcement Hearings
Section 240.185 Cessation of Operations Orders
Section 240.186 Cessation of Conditions Creating an Imminent Danger to Public Health and Safety and the Environment (Repealed)
Section 240.190 Temporary Relief Hearings
Section 240.195 Subpoenas
SUBPART B: PERMIT APPLICATION PROCEDURES FOR PRODUCTION WELLS
Section 240.200 Applicability
Section 240.210 Application for Permit to Drill, Deepen or Convert to a Production Well
Section 240.220 Contents of Application
Section 240.230 Authority of Person Signing Application
Section 240.240 Additional Requirements for Directional Drilling
Section 240.245 Additional Requirements for Horizontal Drilling
Section 240.250 Issuance of Permit to Drill or Operate
Section 240.251 Revocation of Permit to Drill
Section 240.255 Conversion of a Production Well to a Water Well
Section 240.260 Change of Well Location
Section 240.270 Application for Approval of Enhanced Recovery Injection and Disposal Operations (Repealed)
Section 240.280 Duration of Underground Injection Well Orders (Repealed)
SUBPART C: PERMIT APPLICATION PROCEDURES FOR CLASS II UIC WELLS
Section 240.300 Applicability
Section 240.305 Transfer of Management (Recodified)
Section 240.310 Application for Permit to Drill, Deepen, or Convert or Amend to a Class II UIC Well
Section 240.311 Application for Freshwater Aquifer Exemption
Section 240.312 Freshwater Aquifer Exemptions
Section 240.320 Contents of Application
Section 240.330 Authority of Person Signing Application
Section 240.340 Proposed Well Construction and Operating Parameters
Section 240.350 Groundwater and Potable Water Supply Information
Section 240.360 Area of Review
Section 240.370 Public Notice
Section 240.380 Issuance of Permit
Section 240.385 Conversion of a Class II Well to a Water Well
Section 240.390 Permit Amendments
Section 240.395 Update of Class II UIC Well Permits Issued Prior to July 1, 1987
SUBPART D: SPACING OF WELLS
Section 240.400 Definitions
Section 240.410 Drilling Units
Section 240.420 Well Location Exceptions within Drilling Unit
Section 240.425 Change of a Permitted Drilling Location
Section 240.430 Drilling Unit Exceptions
Section 240.440 More Than One Well on a Drilling Unit
Section 240.450 Directional Drilling
Section 240.455 Horizontal Drilling
Section 240.460 Modified Drilling Unit
Section 240.465 Special Drilling Unit
Section 240.470 Establishment of Pool-Wide Drilling Units Based Upon Reservoir Characteristics
SUBPART E: WELL DRILLING, COMPLETION AND WORKOVER REQUIREMENTS
Section 240.500 Definitions
Section 240.510 Department Permit Posted
Section 240.520 Drilling Fluid Handling and Storage
Section 240.525 Saltwater or Oil Based Drilling Fluid Handling and Storage
Section 240.530 Completion Fluid and Completion Fluid Waste Handling and Storage
Section 240.540 Drilling and Completion Pit Restoration
Section 240.550 Disposal of General Oilfield Wastes and Other Wastes
SUBPART F: WELL CONSTRUCTION, OPERATING, AND REPORTING REQUIREMENTS FOR PRODUCTION WELLS
Section 240.600 Applicability
Section 240.605 Drilled Out Plugged Hole (DOPH) Notification
Section 240.610 Construction Requirements for Production Wells
Section 240.620 Remedial Cementing of Leaking Wells
Section 240.630 Operating Requirements
Section 240.640 Reporting Requirements
Section 240.650 Confidentiality of Well Data
Section 240.655 Mechanical Integrity Testing for Class II Injection Wells (Repealed)
Section 240.660 Monitoring and Reporting Requirements for Enhanced Recovery Injection and Disposal Wells (Repealed)
Section 240.670 Avoidable Waste of Gas (Repealed)
Section 240.680 Escape of Unburned Gas Prohibited (Repealed)
SUBPART G: WELL CONSTRUCTION, OPERATING AND REPORTING REQUIREMENTS FOR CLASS II UIC WELLS
Section 240.700 Applicability and Definitions
Section 240.710 Surface and Production Casing Requirements for Newly Drilled Class II UIC Wells
Section 240.720 Surface and Production Casing Requirements for Conversion to Class II UIC Wells
Section 240.730 Surface and Production Casing Requirements for Existing Class II UIC Wells
Section 240.740 Other Construction Requirements for Class II UIC Wells
Section 240.750 Operating Requirements for Class II UIC Wells
Section 240.760 Establishment of Internal Mechanical Integrity for Class II UIC Wells
Section 240.770 Establishment of External Mechanical Integrity for Class II UIC Wells
Section 240.780 Reporting Requirements for Class II UIC Wells
Section 240.790 Confidentiality of Well Data
Section 240.795 Commercial Saltwater Disposal Well
Section 240.796 Operating and Reporting Requirements, Hydraulic Fracturing Operations, Seismicity
SUBPART H: LEASE OPERATING REQUIREMENTS
Section 240.800 Definitions
Section 240.805 Lease and Well Identification
Section 240.810 Tanks, Tank Batteries and Containment Dikes
Section 240.815 Permanent Well Site Equipment Setback
Section 240.820 Flowlines
Section 240.830 Power Lines
Section 240.840 Equipment Storage
Section 240.850 Concrete Storage Structures
Section 240.860 Pits
Section 240.861 Existing Pit Exemption For Continued Production Use
Section 240.862 Existing Pit Exemption For Alternative Use
Section 240.870 Leaking Unpermitted Drill Hole
Section 240.875 Leaking Previously Plugged Well
Section 240.880 Initial Spill Notification
Section 240.890 Crude Oil Spill Remediation Requirements
Section 240.891 Crude Oil Spill Waste Disposal and Remediation
Section 240.895 Produced Water Spill Remediation Requirements
SUBPART I: LIQUID OIL FIELD WASTE HANDLING AND DISPOSAL
Section 240.900 Definitions
Section 240.905 Application for Permit to Operate a Liquid Oilfield Waste Transportation System
Section 240.906 Application for a Liquid Oilfield Waste Transportation Vehicle Permit
Section 240.910 Inspection of Vehicles (Tanks)
Section 240.920 Issuance of Liquid Oilfield Waste Transportation System and Vehicle Permits
Section 240.925 Liquid Oilfield Waste Recordkeeping Requirements
Section 240.926 Liquid Oilfield Waste Transportation System and Vehicle Operating Requirements
Section 240.930 Produced Water
Section 240.940 Crude Oil Bottom Sediments
Section 240.945 Lease Road Oiling
Section 240.950 Crude Oil Spill Waste Disposal (Repealed)
Section 240.960 Oil Field Brine Hauling Permit Conditions (Repealed)
Section 240.970 Inspection of Vehicles (Repealed)
Section 240.980 Transfer of Permits (Repealed)
Section 240.985 Revocation of Oil Field Brine Hauling Permit (Repealed)
Section 240.990 Records and Reporting Requirements (Repealed)
Section 240.995 Bonds--Blanket Surety Bond (Repealed)
Section 240.1000 Definitions
SUBPART J: VACUUM
Section 240.1005 Applicability
Section 240.1010 Application for Vacuum Permit
Section 240.1020 Contents of Application
Section 240.1030 Authority of Person Signing Application
Section 240.1040 Notice and Hearing
Section 240.1050 Issuance of Permit
Section 240.1060 Permit Amendments
SUBPART K: PLUGGING OF WELLS
Section 240.1105 Plugging of Non-Productive Wells (Repealed)
Section 240.1110 Definitions
Section 240.1115 Plugging Responsibility
Section 240.1120 Plugging of Uncased Wells
Section 240.1130 Plugging and Temporary Abandonment of Inactive Production Wells
Section 240.1131 Extension of Future Use Status for Production Wells (Repealed)
Section 240.1132 Plugging and Temporary Abandonment of Inactive Class II UIC Wells
Section 240.1140 General Plugging Procedures and Requirements
Section 240.1150 Specific Plugging Procedures
Section 240.1151 Procedures for Plugging Coal Seams
Section 240.1160 Plugging Fluid Handling and Storage
Section 240.1170 Plugging Fluid Waste Disposal and Well Site Restoration
Section 240.1180 Lease Restoration
Section 240.1181 Lease Restoration Requirements (Repealed)
Section 240.1190 Filing Plugging Report
SUBPART L: REQUIREMENTS FOR TEST WELLS
Section 240.1200 Applicability
Section 240.1205 Application for Permit to Drill a Test Well or Drill Hole
Section 240.1210 Contents of Application for Permit to Drill or Convert to an Observation, Gas Storage Well or Service Well (Repealed)
Section 240.1220 Contents of Application for Coal Test Hole, Mineral Test Hole, Structure Test Hole, or Coal or Mineral Groundwater Monitoring Well
Section 240.1230 Authority of Person Signing Application
Section 240.1240 Issuance of Permit
Section 240.1250 When Wells Shall Be Plugged and Department Notification
Section 240.1260 Plugging and Restoration Requirements
Section 240.1270 Confidentiality
Section 240.1280 Converting to Water Well
SUBPART M: PROTECTION OF WORKABLE COAL BEDS
Section 240.1300 Introduction
Section 240.1305 Permit Requirements in Mine Areas
Section 240.1310 Workable Coal Beds Defined
Section 240.1320 Mining Board May Determine Presence of Coal Seams
Section 240.1330 Well Locations Prohibited
Section 240.1340 Notice to Mining Board
Section 240.1350 Casing and Protective Work
Section 240.1360 Operational Requirements Over Active Mine
Section 240.1370 Inspection of Vehicles (Recodified)
Section 240.1380 Transfer of Permits (Recodified)
Section 240.1385 Revocation of Oil Field Brine Hauling Permit (Recodified)
Section 240.1390 Records and Reporting Requirements (Recodified)
Section 240.1395 Bonds--Blanket Surety Bond (Recodified)
SUBPART N: ISSUANCE OR TRANSFER OF PERMIT TO OPERATE
Section 240.1400 Definitions
Section 240.1405 Transfer of Management (Repealed)
Section 240.1410 Applicability
Section 240.1420 Notification of Transfer
Section 240.1425 Authority of Person Signing Notification of Transfer
Section 240.1430 Responsibilities of Current Permittee
Section 240.1440 Responsibilities of New Permittee
Section 240.1450 Authority of Person Signing Notification of Acceptance
Section 240.1460 Conditions for and Effect of Issuance or Transfer of Permit to Operate
Section 240.1465 Condition for and Effect of Transfer of PRF Wells
Section 240.1470 Revocation of Permit to Operate
Section 240.1480 Involuntary Transfer
Section 240.1485 Administrative Record Correction
Section 240.1490 Transfer Hearings
SUBPART O: BONDS
Section 240.1500 When Required, Amount and When Released
Section 240.1510 Definitions
Section 240.1520 Bond Requirements
Section 240.1530 Forfeiture of Bonds
SUBPART P: WELL PLUGGING AND RESTORATION PROGRAM
Section 240.1600 Definitions
Section 240.1610 Plugging Leaking or Abandoned Wells
Section 240.1620 Plugging Orphaned Wells
Section 240.1625 Plugging Abandoned Wells Through Landowner Grant
Section 240.1630 Emergency Well Plugging, Emergency Repair Work, Emergency Projects
Section 240.1635 Emergency Well Plugging and Emergency Project Reimbursement
Section 240.1640 Repayment of Funds
Section 240.1650 Authorization for a Permittee to Operate Its Wells Placed into the Plugging and Restoration Fund Program for Abandonment
Section 240.1660 Authorization for a Permittee to Operate Their Wells Placed into the Plugging and Restoration Fund Program for Non-payment of Annual Well Fees
SUBPART Q: ANNUAL WELL FEES
Section 240.1700 Fee Liability
Section 240.1705 Amount of Assessment
Section 240.1710 Annual Permittee Reporting
Section 240.1720 When Annual Well Fees are Due
Section 240.1730 Opportunity to Contest Billing
Section 240.1740 Delinquent Permittees
SUBPART R: REQUIREMENTS IN UNDERGROUND GAS STORAGE FIELDS AND FOR GAS STORAGE AND OBSERVATION WELLS
Section 240.1800 Applicability
Section 240.1805 Definitions
Section 240.1810 Submission of Underground Gas Storage Field Map
Section 240.1820 Permit Requests in a Underground Gas Storage Field
Section 240.1830 Application for Permit to Drill or Convert Wells
Section 240.1835 Contents of Application for Permit to Drill or Convert to an Observation or Gas Storage Well
Section 240.1840 Authority of Person Signing Application
Section 240.1850 Issuance of Permit
Section 240.1851 Gas Storage and Observation Well Safety, Construction, and Operating Requirements
Section 240.1852 Inspection and Maintenance Plan
Section 240.1853 Gas Storage and Observation Well Records and Reporting Requirements
Section 240.1854 Notice of Probable Violation, Complaints, Hearings and Civil Penalties
Section 240.1855 Civil Complaint
Section 240.1856 Determination of Penalty
Section 240.1857 Director's Approval of Penalty or Agreed Compromise
Section 240.1858 Enforcement Hearings
Section 240.1859 Emergency Abatement Orders
Section 240.1860 Temporary Relief Hearings
Section 240.1861 Subpoenas
Section 240.1862 Well Drilling Completion and Workover Requirements
Section 240.1865 Liquid Oilfield Waste Disposal
Section 240.1870 Plugging of Gas Storage and Observation Wells
Section 240.1880 Sole Source Aquifer: Natural Gas Incident Notice to Department
Section 240.1890 Sole Source Aquifer: Inspection Fees for Underground Natural Gas Storage Fields
Section 240.1892 Sole Source Aquifer: When Annual Inspection Fees Are Due
Section 240.1894 Sole Source Aquifer: Opportunity to Contest Billing
Section 240.1898 Waiver
SUBPART S: REQUIREMENTS FOR SERVICE WELLS
Section 240.1900 Applicability
Section 240.1905 Application for Permit to Drill or Convert to Other Types of Wells or Drill Holes
Section 240.1910 Contents of Application for Permit to Drill or Convert to a Service Well
Section 240.1920 Authority of Person Signing Application
Section 240.1930 Issuance of Permit
Section 240.1940 When Wells Shall Be Plugged and Department Notification
Section 240.1950 Plugging and Restoration Requirements
Section 240.1960 Converting to Water Well
AUTHORITY: Implementing and authorized by the Illinois Oil and Gas Act [225 ILCS 725], the Illinois Underground Natural Gas Storage Safety Act [415 ILCS 160], and Section 5-45 of the Illinois Administrative Procedure Act [5 ILCS 100].
SOURCE: Adopted November 7, 1951; emergency amendment at 6 Ill. Reg. 903, effective January 15, 1982, for a maximum of 150 days; amended at 6 Ill. Reg. 5542, effective April 19, 1982; codified at 8 Ill. Reg. 2475; amended at 11 Ill. Reg. 2818, effective January 27, 1987; amended at 14 Ill. Reg. 2317, effective January 25, 1990; recodified at 14 Ill. Reg. 3053; amended at 14 Ill. Reg. 13620, effective August 8, 1990; amended at 14 Ill. Reg. 20427, effective January 1, 1991; amended at 15 Ill. Reg. 2706, effective January 31, 1991; recodified at 15 Ill. Reg. 8566; recodified at 15 Ill. Reg. 11641; emergency amendment at 15 Ill. Reg. 14679, effective September 30, 1991, for a maximum of 150 days; amended at 15 Ill. Reg. 15493, effective October 10, 1991; amended at 16 Ill. Reg. 2576, effective February 3, 1992; amended at 16 Ill. Reg. 15513, effective September 29, 1992; expedited correction at 16 Ill. Reg. 18859, effective September 29, 1992; emergency amendment at 17 Ill. Reg. 1195, effective January 12, 1993, for a maximum of 150 days; amended at 17 Ill. Reg. 2217, effective February 8, 1993; amended at 17 Ill. Reg. 14097, effective August 24, 1993; amended at 17 Ill. Reg. 19923, effective November 8, 1993; amended at 18 Ill. Reg. 8061, effective May 13, 1994; emergency amendment at 18 Ill. Reg. 10380, effective June 21, 1994, for a maximum of 150 days; amended at 18 Ill. Reg. 16361, effective November 18, 1994; amended at 19 Ill. Reg. 10981, effective July 14, 1995; amended at 21 Ill. Reg. 7164, effective June 3, 1997; emergency amendment at 22 Ill. Reg. 988, effective December 22, 1997, for a maximum of 150 days; amended at 22 Ill. Reg. 8422, effective April 28, 1998; amended at 22 Ill. Reg. 8845, effective April 28, 1998; amended at 22 Ill. Reg. 22314, effective December 14, 1998; amended at 25 Ill. Reg. 9045, effective July 9, 2001; amended at 35 Ill. Reg. 13281, effective July 26, 2011; amended at 38 Ill. Reg. 18717, effective August 29, 2014; amended at 38 Ill. Reg. 22052, effective November 14, 2014; amended at 40 Ill. Reg. 7051, effective April 22, 2016; expedited correction at 40 Ill. Reg. 11042, effective April 22, 2016; emergency amendment at 40 Ill. Reg. 13265, effective September 1, 2016, for a maximum of 150 days; emergency expired January 28, 2017; amended at 41 Ill. Reg. 2957, effective February 21, 2017; amended at 42 Ill. Reg. 5811, effective March 14, 2018; emergency amendment at 43 Ill. Reg. 4650, effective April 4, 2019, for a maximum of 150 days; emergency expired August 31, 2019; amended at 43 Ill. Reg. 10459, effective September 6, 2019; amended at 43 Ill. Reg. 11524, effective September 24, 2019; amended at 45 Ill. Reg. 13907, effective October 25, 2021; amended at 46 Ill. Reg. 20013, effective January 1, 2023; amended at 48 Ill. Reg. 5734, effective March 27, 2024; amended at 49 Ill. Reg. 565, effective December 30, 2024.
SUBPART A: GENERAL PROVISIONS
Section 240.10 Definitions
"Act" – means the Illinois Oil and Gas Act [225 ILCS 725].
"Annular or Casing Injection/Disposal Well" – means a well into which fluids are injected between the surface casing and the well bore, the surface casing and the production casing, and/or the production casing and the tubing, or a well into which fluids are injected which does not have production casing, tubing and packer.
"Cement" – means all petroleum industry cements meeting the requirements set forth in "Specifications for Oil Well Cements and Cement Additives", API Standard 10A, January 1974, published by the American Petroleum Institute, 1220 L Street, Northwest, Washington DC 20005 (this incorporation does not include any later publications or editions), except as provided in Subpart K.
"Class II Fluids" means:
Produced water and/or other fluids brought to the surface in connection with drilling, completion, workover and plugging of oil and natural gas wells; enhanced recovery operations; or natural gas storage operations;
Produced water and/or other fluids from above, that prior to re-injection have been:
used on site for purposes integrally associated to oil and natural gas well drilling, completion, workover and plugging, oil and gas production, enhanced recovery operations or natural gas storage;
chemically treated or altered to the extent necessary to make them usable for purposes integrally related to oil and natural gas well drilling, completion, workover and plugging, oil and gas production, enhanced recovery operations, or natural gas storage operations;
commingled with fluid wastes resulting from fluid treatments outlined above, provided the commingled fluid wastes do not constitute a hazardous waste under the Resource Conservation and Recovery Act (42 USC 6901 et seq. (RCRA));
Fresh water from groundwater or surface water sources that is used for purposes integrally related or associated with oil and natural gas well drilling, completion, workover and plugging, oil and gas production, enhanced recovery operations or natural gas storage;
Waste fluids from gas plants (including filter backwash, precipitated sludge, iron sponge, hydrogen sulfide and scrubber liquid) that are an integral part of oil and gas production operations; and waste fluids from gas dehydration plants (including glycol-based compounds and filter backwash) that are an integral part of natural gas storage operations, unless the gas plant or gas dehydration plant wastes are classified as hazardous under RCRA.
"Class II UIC Well" – means an injection, disposal or commercial disposal well into which fluids are injected:
That are brought to the surface in connection with natural gas storage operations, or conventional oil or natural gas production, and may be commingled with wastewaters from gas plants that are an integral part of production operations, unless those waters are classified as a hazardous waste at the time of injection;
For enhanced recovery of oil or natural gas; and
For storage of hydrocarbons that are liquid at standard temperature and pressure.
"Commercial Disposal Well" – means a permitted Class II well for which the permittee receives deliveries of Class II fluids by tank truck and charges a fee for the specific purpose of disposal of Class II fluids.
"Commercial Production" − means oil and/or gas has been produced and sold from a well.
"Convert" – means to change an oil, gas, Class II UIC, water supply, observation or gas storage well to another of those types of wells, requiring the issuance of a new permit.
"Department" – means the Department of Natural Resources (Section 1 of the Act), with main offices located at One Natural Resources Way, Springfield IL 62702.
"Directional Drilling" – means the controlled directional drilling when the bottom of the well bore is directed away from the vertical position.
"Director" – means the Director of the Department of Natural Resources or his or her designee.
"Disposal Well" – means a Class II UIC well into which fluids brought to the surface in connection with oil or natural gas production are injected into a non-productive oil or gas zone for purposes other than enhanced oil recovery.
"District Office" – means the Department's office for the district in which the well is located.
"Enhanced Oil Recovery" – means any secondary or tertiary recovery method used in an effort to recover hydrocarbons from a pool by injection of fluids, gases or other substances to maintain, restore or augment natural reservoir energy, or by introducing gases, chemicals, other substances or heat or by in-situ combustion, or by any combination thereof. (Section 1 of the Act)
"Enhanced Oil Recovery Injection Well" – means a Class II UIC well used for enhanced oil recovery.
"Flowline" – means all injection, produced water, oil or gas flowlines located within the boundaries of a lease or unit, or gathering lines between leases to a centralized storage area, or to the point where the lines connect with a primary transportation pipeline.
"Fresh water" – means surface and subsurface water in its natural state useful for drinking water for human consumption, domestic livestock, irrigation, industrial, municipal and recreational purposes, and that will support aquatic life and contains less than 10,000 ppm total dissolved solids.
"General Oilfield Waste" – means oily rags, chemical containers including any unused chemicals, oil filters and gaskets, used motor oil, lubricating oils, hydraulic fluids, diesel fuels, paint and solvent wastes and other similar wastes generated during drilling, completion, production and plugging activities and that are not exempt from the provisions of Subtitle C of RCRA.
"Injection Well" – means an enhanced oil recovery injection well or disposal well.
"Liquid Oilfield Waste" – means oilfield brines, produced waters, Class II fluids, tank and pit crude oil bottom sediments, and drilling and completion fluids, to the extent those wastes are now or hereafter exempt from the provisions of Subtitle C of the Federal Resource Conservation Recovery Act of 1976. (Section 8c of the Act)
"Liquid Oilfield Waste Hauler" – means a person holding a permit to operate a liquid oilfield waste transportation system.
"Material Misrepresentation" – means knowingly submitting any untrue, misstated, misleading or deceptive information, or a document containing that information, or with knowledge of the concealment, suppression or omission of any information, in or from an application, permit, required record, or any other document required by the Act or this Part, that causes the Department to act differently than it would have if it had known the undisclosed or true information.
"Office" – means the Office of Oil and Gas Resource Management within the Department of Natural Resources.
"Orphan Well" – means a well for which:
no fee assessment under Section 19.7 of the Act has been paid or no other bond coverage has been provided for 2 consecutive years;
no oil or gas has been produced from the well or from the lease or unit on which the well is located for 2 consecutive years; and
no permittee or owner can be identified or located by the Department. Orphaned wells include wells that may have been drilled for purposes other than those for which a permit is required under the Act if the well is a conduit for oil or saltwater intrusions into freshwater zones or onto the surface which may be caused by oil and gas operations. (Section 1 of the Act)
"Owner" – means the person who has the right to drill into and produce from any pool, and to appropriate the production either for the person or for the person and another, or others, or solely for others, excluding the mineral owner's royalty if the right to drill and produce has been granted under an oil and gas lease. An owner may also be a person granted the right to drill and operate an injection (Class II UIC) well independent of the right to drill for and produce oil or gas. When the right to drill, produce, and appropriate production is held by more than one person, then all persons holding these rights may designate the owner by a written operating agreement or similar written agreement. In the absence of such an agreement, and subject to the provisions of Sections 22.2 and 23.1 through 23.16 of the Act, the owner shall be the person designated in writing by a majority in interest of the persons holding these rights. (Section 1 of the Act)
"Permit" – means the Department's written authorization allowing:
a well or test hole to be drilled, deepened, converted and/or operated by an owner (Section 1 of the Act); or
a tank battery or concrete storage structure to be constructed and operated; or
operation of a liquid oilfield waste transportation system or engage in lease road oiling.
"Permittee" – means the owner holding or required to hold the permit, and who is also responsible for paying assessments in accordance with Section 19.7 of the Act and, where applicable, executing and filing the bond associated with the well as principal and who is responsible for compliance with all statutory and regulatory requirements pertaining to the well. When the right and responsibility for operating a well is vested in a receiver or trustee appointed by a court of competent jurisdiction, the permit shall be issued to the receiver or trustee. (Section 1 of the Act) Permittee also means the owner or person required to hold the permit for a tank battery, pit, or concrete storage structure or a permit to engage in liquid oilfield waste hauling, lease road oiling, or test well and test hole drilling.
"Person" – means any natural person, corporation, association, partnership, governmental agency or other legal entity, receiver, trustee, guardian, executor, administrator, fiduciary or representative of any kind. (Section 1 of the Act)
"PRF" − means the Department's Plugging and Restoration Fund, established under Section 6 of the Act.
"Pool" – means a natural underground reservoir containing, in whole or in part, a natural accumulation of oil or gas, or both. Each productive zone or stratum of a general structure, which is completely separated from any other zone or stratum in the structure, is deemed a separate "pool". (Section 1 of the Act)
"Primary Oil Recovery" – means the initial drilling of a well in the effort to recover hydrocarbons for a pool that is not currently, nor was previously, subject to enhanced oil recovery.
"Post-Primary Oil Recovery" – means the drilling of a well in an effort to recover hydrocarbons from a pool that was previously subject to primary oil recovery or to enhanced oil recovery.
"Produced Water" – means water regardless of chloride and total dissolved solids (TDS) content that is produced in conjunction with oil and/or natural gas production and natural gas storage operations.
"Production Casing" – means the string of casing placed in a well and used for the purpose of isolating the production or injection formation.
"Repressure" – means to increase the reservoir pressure by the introduction of gas, air or water or other fluid into the reservoir.
"Reservoir" – for the purpose of this Part, is interchangeable with the term "pool".
"Rotary Drilling" – means the hydraulic process of drilling a well for oil or gas as that method is commonly used in the industry.
"Shooting" – means the exploding of nitroglycerin or other high explosives in a well for the purpose of increasing the production of oil or gas.
"Surface Waters" – means any river, stream, lake, pond or intermittent stream.
"Tank" – means a vessel into which oil or water is gathered, produced or stored.
"Tank Battery" – means one or more open or closed top tanks, of any capacity, that are located on a lease, unit or adjacent property, for the purpose of collecting, separating and/or storing crude oil and/or other liquid oilfield wastes that are generated as a result of oil and gas production operations.
"Undeveloped Limits of a Mine" – means that portion of a mine where the entries have not been driven to the boundaries of the mine property.
"Vacuum" – means pressure that is reduced below the pressure of the atmosphere.
"Water Drainage Way" – means any drainage ditch, roadside ditch, grassy waterway or any other natural or manmade surface or underground water drainage system.
"Well" – means any drill hole required to be permitted under Section 6(2) of the Act, including coal or mineral groundwater monitoring wells, structure test holes, coal test holes, and mineral test holes, and any other well required to be permitted under Sections 6 and 12 of the Act, including oil and gas production wells, water supply wells, Class II UIC injection wells, gas storage and gas storage monitoring wells, orphan wells, unpermitted leaking drill holes and plugged wells.
(Source: Amended at 40 Ill. Reg. 7051, effective April 22, 2016)
