Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Nip Point
Definition(s)
Nip Point
“Nip point” means the point where the wire line becomes tangent to a sheave. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. RegulationsHot Oil Operation
Definition(s)
Hot Oil Operation
“Hot oil operations” means the treatment of a producing well with heated oil to melt accumulated paraffin in the tubing and annulus. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. RegulationsFlow Line
Definition(s)
Flow Line
The piping that exits the bell nipple and conducts drilling fluid and cuttings to the shale shaker and drilling fluid pits. Source: API RP 64, Recommended Practice for Diverter Systems Equipment and Operations, Second Edition, November 2001 (March 1, 2007). Global StandardsFlow Line
Conduit for well returns routed from the wellhead to the choke manifold and from the wellhead to processing equipment. Considerations of design include size, connections, geometry, and pressure rating and anticipated flow conditions. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsFlow Line
“Flow line” means the surface pipe which carries drilling fluid from surface tanks or other storage. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. RegulationsDraw Works
Definition(s)
Draw Works
“Draw works” means the hoisting mechanism on a drilling, well servicing, or workover rig. It is essentially a large winch that spools off or takes in the hoisting line. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. RegulationsDrawworks
Any assembly of power transmission equipment and machine parts used in the rotary method of drilling or well servicing, for hoisting and lowering the drill pipe, casing, tubing and drilling tools used in a well. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. RegulationsDerrick Board
Definition(s)
Derrick Board
“Derrick board” means the platform on which the derrickmen work. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. RegulationsCrown Block
Definition(s)
Crown Block
“Crown block” means an assembly of sheaves or pulleys mounted on beams at the top of the derrick or mast over which a hoisting line is reeved. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. RegulationsBleed-off Line or Blooey Line
Definition(s)
Bleed-off Line or Blooey Line
“Bleed-off line” or “blooey line” means a pipe used to discharge materials or release pressure away from a well or pressurized equipment. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. RegulationsAnchor
Definition(s)
Anchor
“Anchor” means a device that is used to secure, fasten, or stabilize. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. RegulationsAnchor
Device used to secure items of equipment, important in the context of UBD where vibration is a factor or concern. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsAir, Gas, or Mist Drilling
Definition(s)
Air, Gas, or Mist Drilling
“Air, gas, or mist drilling” means a method of rotary drilling using compressed air or gas as its primary circulation medium. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. RegulationsProduced Water Injection Project
Definition(s)
Produced Water Injection Project
Produced Water Injection Project―project approved in accordance with R.S. 47:633.5 and the rules adopted herein for the purpose of increasing the recovery of hydrocarbons therefrom. Source: Natural Resources, Office of Conservation – General Operations, Louisiana Administrative Code, Title 43, Part XIX, March 2013. RegulationsPertinent Data
Definition(s)
Pertinent Data
Pertinent Data―with respect to any unit proceedings, all basic factual information available from wells drilled or drilling which can reasonably be utilized in determining the unit configuration, including but not limited to:- electric logs, porosity logs and dipmeter logs;
- tests, completion and production data; and
- core data. All data that will be employed at a hearing shall be considered pertinent data.