Part 240: THE ILLINOIS OIL AND GAS ACT

Section 240.312 Freshwater Aquifer Exemptions a) The following aquifer exemptions have been approved by the U.S. Environmental Protection Agency. b) Siloam pool located in Township 2 South, Range 4 West in Brown County consisting of: 1) SE/4 SE/4 of Section 7; and 2) S/2 NE/4 and…

Section 240.320 Contents of Application The application for a permit to drill, deepen or convert shall include: a) The name of the well. b) The well location surveyed by an Illinois licensed land surveyor or Illinois registered professional engineer, the GPS (Global Positioning S…

Section 240.330 Authority of Person Signing Application a) All applications for permits to drill, deepen, or convert to a Class II UIC well shall identify whether the owner of the right to drill and to operate the well is an individual, partnership, corporation or other entity, a…

Section 240.340 Proposed Well Construction and Operating Parameters a) Well Construction Records for Conversion Wells If the application is for the conversion of a previously drilled well, the applicant shall: 1) submit a complete copy of all available geophysical logs run on the…

Section 240.350 Groundwater and Potable Water Supply Information a) The applicant shall submit a statement certifying there are no potable water wells located within 200 feet of the proposed Class II UIC well, and there are no municipal water supply wells located within 2500 feet…

Section 240.360 Area of Review a) The area of review shall include all wells located within 1/4 mile of the proposed Class II UIC well, including directionally and horizontally drilled wells, which penetrate the injection interval within 1/4 mile of the proposed Class II UIC well…

Section 240.370 Public Notice a) Contents of Notice and Publication Public notice shall be given no earlier than 30 days prior to the filing of the application. A notice that an application for a permit to drill, deepen or convert to a Class II UIC well has been or will be filed …

Section 240.380 Issuance of Permit a) If the applicant satisfies the requirements of the Act and this Part, the Department shall issue a permit. b) A permit shall not be issued to an applicant not in compliance with Section 240.250(b). c) Permits shall expire 1 year from the date…

Section 240.385 Conversion of a Class II Well to a Water Well Class II wells may not be converted to a livestock or domestic use water well that is required to have a permit from the Illinois Department of Public Health. Class II wells converted to livestock or domestic use water…

Section 240.390 Permit Amendments a) Change of Injection Interval 1) The permittee shall not change to an unpermitted injection interval without obtaining a permit amendment from the Department. 2) The permittee shall make application for amendment on a form provided by the Depar…

Section 240.395 Update of Class II UIC Well Permits Issued Prior to July 1, 1987 a) All Class II UIC wells permitted as injection or disposal wells prior to July 1, 1987 that have not previously been reviewed in conjunction with the Department's Class II UIC Program shall be revi…

Section 240.40 Enforcement of Act (Repealed) (Source: Repealed at 14 Ill. Reg. 2317, effective January 25, 1990)

Section 240.400 Definitions For the purposes of this Subpart: "Gas" means a mixture of hydrocarbons and varying quantities of non-hydrocarbons in a gaseous state which may or may not be associated with oil, including those liquids resultant from condensation, but not including ca…

Section 240.410 Drilling Units a) Oil Wells 1) The Department shall not issue a permit for the drilling or deepening of a well for the production of oil within the State of Illinois unless the proposed well location and spacing are within 10 acres of surface area lying within the…

Section 240.420 Well Location Exceptions within Drilling Unit a) Whenever the conditions of a drilling unit render it impractical to drill an oil or gas well at a location conforming to the requirements of Section 240.410, an oil or gas well may be drilled at a nonconforming loca…

Section 240.425 Change of a Permitted Drilling Location a) If, after a permit is issued but prior to the commencement of drilling, the permittee determines that the permitted location is impractical to drill: 1) The permittee is allowed, without prior approval from the Department…

Section 240.430 Drilling Unit Exceptions a) In the case of irregular sections containing more or less than 640 acres, in those areas where the United States Government has not made an official survey, in areas covered by the old French Surveys and Grants, in meandered lands, in g…

Section 240.440 More Than One Well on a Drilling Unit More than one well may be drilled on a drilling unit to different reservoirs, allocating the acreage in the drilling unit for each producing reservoir as specified in Section 240.410. (Source: Added at 15 Ill. Reg. 15493, effe…

Section 240.450 Directional Drilling a) A directional drilled well is a wellbore which is purposely deviated from the vertical and intersects the planned zone of production at a projected surface location other than the surface location of the well specified on the permit. b) For…

Section 240.455 Horizontal Drilling a) For purposes of this Subpart, a horizontal well is a wellbore that has an overall length within the reservoir of twice the thickness of the reservoir. b) An oil or gas production well may be developed with one or more horizontal drainholes d…

Section 240.460 Modified Drilling Unit a) The Department shall schedule a hearing to consider a petition for modification of the location of the standard drilling unit described in Section 240.410, based on geologic or engineering characteristics of the reservoir, relative to the…

Section 240.465 Special Drilling Unit a) The Department shall consider a petition to establish a special drilling unit based on whether: 1) the well density specified in Section 240.430(a) is maintained; and 2) a standard drilling unit cannot be formed utilizing the integration p…

Section 240.470 Establishment of Pool-Wide Drilling Units Based Upon Reservoir Characteristics a) Upon application of any person having an interest in oil or gas in all or a portion of a reservoir, the Department shall consider the establishment of pool-wide drilling units other …

Section 240.50 Delegation of Authority (Repealed) (Source: Repealed at 14 Ill. Reg. 2317, effective January 25, 1990)

Section 240.500 Definitions For the purpose of this Subpart the term: "Completion Fluids" means liquids that are used to complete or workover a well including saltwater, crude oil, frac fluids, acids and other treatment chemicals. "Completion Fluid Waste" means completion fluids …

Section 240.510 Department Permit Posted During well drilling, deepening or conversion operations a copy of the permit shall be kept at the well site. (Source: Section repealed at 15 Ill. Reg. 15493, effective October 10, 1991, new Section added at 16 Ill. Reg. 15513, effective S…

Section 240.520 Drilling Fluid Handling and Storage a) Cable Tool or Air Rotary Drilling When drilling with cable tools or air rotary equipment the permittee shall provide at least one (1) sediment pit or above ground container into which drill cuttings and drilling fluids shall …

Section 240.525 Saltwater or Oil Based Drilling Fluid Handling and Storage a) When initiating drilling operations using saltwater or oil drilling fluids, the permittee shall provide at least one (1) lined sediment pit or above ground, portable container into which drill cuttings …

Section 240.530 Completion Fluid and Completion Fluid Waste Handling and Storage a) Completion Fluid Handling and Storage Prior to Use If completion fluids are temporarily stored at the well site prior to use in completion activities, the fluids shall be stored in a lined complet…

Section 240.540 Drilling and Completion Pit Restoration a) Sediment, drilling fluid circulation and reserve pits, except sediment pits used as completion pits, shall be filled and leveled within 6 months after drilling ceases. Drilling fluid wastes may be disposed of by on-site b…

Section 240.550 Disposal of General Oilfield Wastes and Other Wastes All general oilfield wastes generated during drilling, completion and workover activities shall be temporarily stored in on-site containers, and shall be removed from the site prior to or at the conclusion of th…

Section 240.60 Right of Inspection (Repealed) (Source: Repealed at 14 Ill. Reg. 2317, effective January 25, 1990)

Section 240.600 Applicability The provisions of this Subpart apply to wells drilled for the production of oil or gas, or wells drilled for water supply in connection with an enhanced oil recovery project. (Source: Added at 15 Ill. Reg. 15493, effective October 10, 1991)

Section 240.605 Drilled Out Plugged Hole (DOPH) Notification The permittee shall notify the District Office for the county in which the well is located 24 hours prior to commencing drilling of a drilled out plugged hole (DOPH). (Source: Added at 21 Ill. Reg. 7164, effective June …

Section 240.610 Construction Requirements for Production Wells a) Surface Casing Requirements for Wells Drilled After May 13, 1994 1) Steel surface casing or fiberglass casing meeting API standards (Fiberglass Casing and Tubing; 15AR, May 1987, published by the American Petroleum…

Section 240.620 Remedial Cementing of Leaking Wells If the Department determines through field observation that any well is leaking well bore fluid into the freshwater zone or onto the surface, remedial cementing shall be required. The remedial cementing shall be accomplished by:…

Section 240.630 Operating Requirements a) The well shall be maintained and operated in accordance with all permit conditions or be subject to permit revocation in accordance with Section 240.251. b) The well and wellhead shall be maintained in a leak-free condition. c) All spills…

Section 240.640 Reporting Requirements a) Well Completion Reports 1) Contents The Well Completion Report shall be completed on a form prescribed by the Department and shall contain: A) the name and location of the well; B) information on the construction of the well; C) informati…

Section 240.650 Confidentiality of Well Data When requested in writing by the permittee, the Well Completion Report, Well Drilling Report, geophysical logs, and drill cuttings shall be kept confidential for two (2) years from the date of issuance of the permit for the particular …

Section 240.655 Mechanical Integrity Testing for Class II Injection Wells (Repealed) (Source: Repealed at 15 Ill. Reg. 15493, effective October 10, 1991)

Section 240.660 Monitoring and Reporting Requirements for Enhanced Recovery Injection and Disposal Wells (Repealed) (Source: Repealed at 15 Ill. Reg. 15493, effective October 10, 1991)

Section 240.670 Avoidable Waste of Gas (Repealed) (Source: Repealed at 15 Ill. Reg. 15493, effective October 10, 1991)

Section 240.680 Escape of Unburned Gas Prohibited (Repealed) (Source: Repealed at 15 Ill. Reg. 15493, effective October 10, 1991) SUBPART G: WELL CONSTRUCTION, OPERATING AND REPORTING REQUIREMENTS FOR CLASS II UIC WELLS

Section 240.70 Right of Access (Repealed) (Source: Repealed at 14 Ill. Reg. 2317, effective January 25, 1990)

Section 240.700 Applicability and Definitions The provisions of this Subpart apply to all Class II UIC wells - including commercial saltwater disposal wells. "Commercial Saltwater Disposal Well Facility" means a commercial saltwater disposal well and all associated Class II stora…

Section 240.710 Surface and Production Casing Requirements for Newly Drilled Class II UIC Wells a) Surface Casing 1) Steel surface casing shall be set to a depth of at least 100 feet, or 50 feet below the base of the freshwater zone, whichever is deeper, unless an alternative sur…

Section 240.720 Surface and Production Casing Requirements for Conversion to Class II UIC Wells a) Surface Casing For conversions of existing production wells which do not have surface casing completely covering the fresh water zone, further cementing is not required unless it is…