Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Basic Sediment Pit
Definition(s)
Basic Sediment Pit
"Basic sediment pit" means a pit used in conjunction with a tank battery for storage of basic sediment removed from a production vessel or from the bottom of an oil storage tank. Source: Corporation Commission, Oil and Gas Conservation, Oklahoma Administrative Code 165:10, February 2013. RegulationsBasic Sediment Pit
Pit used in conjunction with a tank battery for storage of basic sediment removed from a production vessel or from the bottom of an oil storage tank. Basic sediment pits were formerly referred to as burn pits. Source: Oil and Gas Division, Texas Administrative Code, Title 16, Chapter 3, February 2013. RegulationsAssociated Gas
Definition(s)
Associated Gas
"Associated gas" means any gas produced from a Commission ordered combination oil and gas reservoir in which allowed rates of production are based upon volumetric withdrawals. Source: Corporation Commission, Oil and Gas Conservation, Oklahoma Administrative Code 165:10, February 2013. RegulationsMineable Coal Seam
Definition(s)
Mineable Coal Seam
“Mineable coal seam” means any underground coal seam, of sufficient thickness, that may be economically mined by current mining methods. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsSqueeze
Definition(s)
Squeeze
“Squeeze” means the pumping of a cement slurry under pressure through perforations to seal the back side of casing. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsNatural Invironment
Definition(s)
Natural Invironment
“Natural environment” means the physical and biological environment (milieu naturel). Source: Canada Oil and Gas Drilling and Production Regulations, SOR/2009-315, February 2013. Regulations Source: Drilling and Production Guidelines, The Canada-Nova Scotia Offshore Petroleum Board and Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada, March 31, 2011. Regulatory Guidance Source: Nova Scotia Offshore Petroleum Drilling and Production Regulations, SOR/2009-317, Canada, current to May 31, 2012. RegulationsNatural Invironment
The physical and biological environment. Note: Excerpted from section 1.(1) of the Regulations. Source: Environmental Protection Plan Guidelines, The Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada-Nova Scotia Offshore Petroleum Board, and National Energy Board, Canada, March 31, 2011. Regulatory Guidance Source: Offshore Waste Treatment Guidelines, The Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada-Nova Scotia Offshore Petroleum Board, and National Energy Board, Canada, December 15, 2010. Regulatory GuidanceBig Lime
Definition(s)
Big Lime
“Big lime” means all rock units above the Silurian Rochester Shale and below the Devonian Olentangy Shale. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsIdentification Tag
Definition(s)
Identification Tag
“Identification tag” means brass or steel plate with the initials ODNR, and the permit number legibly braised, burned or stamped in the surface, and affixed on top of the casing. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsMulti-pool Well
Definition(s)
Multi-pool Well
“Multi-pool well” means a well that is completed in more than one pool (puits à gisements multiples). Source: Canada Oil and Gas Drilling and Production Regulations, SOR/2009-315, February 2013. Regulations Source: Drilling and Production Guidelines, The Canada-Nova Scotia Offshore Petroleum Board and Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada, March 31, 2011. Regulatory Guidance Source: Nova Scotia Offshore Petroleum Drilling and Production Regulations, SOR/2009-317, Canada, current to May 31, 2012. RegulationsBrush And Stone Bridge
Definition(s)
Brush And Stone Bridge
“Brush and stone bridge” means an obstruction, made of timber and stone, and placed in a well bore to form an effective base for plugging material. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsMechanical Bridge
Definition(s)
Mechanical Bridge
“Mechanical” bridge means a manufactured device designed to seal the well bore or inside diameter of various sizes of casing that may be used as a base for approved plugging material. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsMinor Injury
Definition(s)
Minor Injury
“Minor injury” means an employment injury for which medical treatment or first aid is provided and excludes a lost or restricted workday injury (blessure sans gravité). Source: Canada Oil and Gas Drilling and Production Regulations, SOR/2009-315, February 2013. Regulations Source: Drilling and Production Guidelines, The Canada-Nova Scotia Offshore Petroleum Board and Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada, March 31, 2011. Regulatory Guidance Source: Nova Scotia Offshore Petroleum Drilling and Production Regulations, SOR/2009-317, Canada, current to May 31, 2012. RegulationsMinor Injury
“Minor injury” means an employment injury or an occupational disease for which first aid or medical treatment is provided and excludes a disabling injury. Source: Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. Regulations Source: Oil and Gas Occupational Safety and Health Regulations, SOR/87-612, Canada, current to April 29, 2013. RegulationsPrecast Concrete Plug
Definition(s)
Precast Concrete Plug
“Precast concrete plug” means a tapered plug, constructed of concrete and precast in various sizes, expressly for creating a bridge on a casing seat or ripped casing. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsMouse Hole
Definition(s)
Mouse Hole
Opening in the rig floor near the rotary table, in which joints of drill pipe are temporarily placed for later connection to the drill string.- Note: 1 to entry: The mouse hole is usually fitted underneath with a length of casing, usually with a bottom.
Mouse Hole
“Mouse hole” means a shallow hole into which a length of drill pipe is placed temporarily for later connection to drill string. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsLost or Restricted Workday Injury
Definition(s)
Lost or Restricted Workday Injury
“Lost or restricted workday injury” means an injury that prevents an employee from reporting for work or from effectively performing all the duties connected with the employee’s regular work on any day subsequent to the day on which the injury occurred whether or not that subsequent day is a working day for that employee (blessure entraînant une perte de temps de travail). Source: Canada Oil and Gas Drilling and Production Regulations, SOR/2009-315, February 2013. Regulations Source: Drilling and Production Guidelines, The Canada-Nova Scotia Offshore Petroleum Board and Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada, March 31, 2011. Regulatory Guidance Source: Nova Scotia Offshore Petroleum Drilling and Production Regulations, SOR/2009-317, Canada, current to May 31, 2012. RegulationsRat Hole
Definition(s)
Rat Hole
“Rat hole” means a shallow hole into which the kelly and swivel are placed when hoisting operations are in progress. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsRat Hole
“Rathole” or “mousehole” means the temporary storage space that is used to store the kelly or drill pipe while adding a new section of pipe to the drill string at some rotary drilling rigs. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsSulfate Resistant Cement
Definition(s)
Sulfate Resistant Cement
“Sulfate resistant cement” means a cement-additive blend that resists deterioration in the presence of hydrogen sulfide. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsPrepared Clay
Definition(s)
Prepared Clay
“Prepared clay” means a commercially processed, finely ground composite extracted from, a Pennsylvanian underclay, Pleistocene glacial clay or other materials as approved by the chief. The chief shall establish standards and conduct tests as necessary to identify approved sources of prepared clay. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsDrilling Mud
Definition(s)
Drilling Mud
“Drilling Mud” means any mixture of water, bentonite, and/or clay to form a slurry as commonly used in the oil and gas industry. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsLong String
Definition(s)
Long String
“Long string” means any casing placed in the well bore for the purpose of protecting the producing zones. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsIntermediate String
Definition(s)
Intermediate String
“Intermediate string” means any casing placed in the well bore after the surface casing but before the long string for operational reasons. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsFresh Water Strata
Definition(s)
Fresh Water Strata
"Fresh water strata" means a strata from which fresh water may be produced in economical quantities. Source: Corporation Commission, Oil and Gas Conservation, Oklahoma Administrative Code 165:10, February 2013. RegulationsFresh Water Strata
“Fresh water strata” means all unconsolidated rock material or sedimentary rock containing water with less than ten thousand milligrams per liter total of dissolved solids. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsReservoir Rock
Definition(s)
Reservoir Rock
“Reservoir rock” means a body of rock sufficiently porous to permit the accumulation of water, petroleum, natural gas or other fluids. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsExempt From Burial
Definition(s)
Exempt From Burial
“Exempt from burial” means any pipeline used solely for the purpose of transporting oil or gas from the leasehold facilities, shall be laid on the surface of the ground. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsPipelines Used To Transport Leasehold Gas
Definition(s)
Pipelines Used To Transport Leasehold Gas
“Pipelines used to transport leasehold gas” means any pipeline used solely for the purpose of transporting gas from the leasehold facilities, to points or places where said gas may be utilized on said premises. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsPipelines Used In The Producing Of Oil And/Or Natural Gas Wells
Definition(s)
Pipelines Used In The Producing Of Oil And/Or Natural Gas Wells
“Pipelines used in the producing of oil and/or natural gas wells” means any pipeline used to produce oil and/or natural gas for sale or to transport to storage tanks or a point of delivery for the purpose of sale. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsFormation Flow Test
Definition(s)
Formation Flow Test
“Formation flow test” means an operation- to induce the flow of formation fluids to the surface of a well to procure reservoir fluid samples and determine reservoir flow characteristics; or
- to inject fluids into a formation to evaluate injectivity (essai d’écoulement de formation).