Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Cargo Area
Definition(s)
Cargo Area
Cargo area is that part of the ship that contains cargo tanks, slop tanks, cargo pump-rooms including pump-rooms, cofferdams, ballast or void spaces adjacent to cargo tanks or slop tanks and also deck areas throughout the entire length and breadth of the part of the ship over the above-mentioned spaces. Where independent tanks are installed in hold spaces, cofferdams, ballast or void spaces at the after end of the aftermost hold space or at the forward end of the forward-most hold space are excluded from the cargo area. Source: Resolution MEPC.119(52), 2004 amendments to the International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (IBC Code), 15 October 2004. Regulatory guidance, International Maritime OrganizationCargo Area
Cargo area is that part of the ship that contains cargo tanks, slop tanks, cargo pump-rooms including pump-rooms, cofferdams, ballast or void spaces adjacent to cargo tanks or slop tanks and also deck areas throughout the entire length and breadth of the part of the ship over the above-mentioned spaces. Where independent tanks are installed in hold. Source: Resolution MEPC.119(52), 2004 amendments to the International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (IBC Code), 15 October 2004. Regulatory guidance, International Maritime OrganizationCargo Area
Cargo area is that part of the ship that contains cargo holds, cargo tanks, slop tanks and cargo pump-rooms including pump-rooms, cofferdams, ballast and void spaces adjacent to cargo tanks and also deck areas throughout the entire length and breadth of the part of the ship over the above-mentioned spaces. <Chapter II-2, part A, regulation 3>. Source: IMO Resolution MSC.99(73), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 5 December 2000, International Maritime Organization. LegislationWorkover
Definition(s)
Workover
Remedial work done to the equipment within a well, the well pipe work, or relating to attempts to increase the rate of flow. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsWorkover
“Workover” means a procedure the operator undertakes that is intended to increase production but is not routine maintenance and includes:- re-entry into the well to drill deeper, to sidetrack to a different location, to recomplete for production or to restore production from a zone that has been temporarily abandoned;
- recompletion by re-perforation of a zone from which gas or oil has been produced or by perforation of a different zone;
- repair or replacement of faulty or damaged casing or related downhole equipment;
- fracturing, acidizing or installing compression equipment; or
- squeezing, cementing or installing equipment necessary for removal of excessive water, brine or condensate from the well bore in order to establish, continue or increase production from the well.
Workover
an operation in which a well is re-entered for the purpose of maintaining or repairing it. Regulation 2, DCR. Source: Oil & Gas UK, Guidelines on subsea BOP systems, Issue 1, July 2012, Global StandardsWorkover
“Workover” means an operation on a completed well that requires removal of the Christmas tree or the tubing (reconditionnement. 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. RegulationsSAR
Definition(s)
SAR
“SAR” means the sodium adsorption ratio. Source: Oil and Gas, New Mexico Administrative Code Title 19, Chapter 15, January 2013. RegulationsSAR
Search and Rescue. Source: NOGEPA Industrial Guideline No. 20, Alerting Procedure SAR Helicopter for Drifting Vessel (NUC) Offshore, Netherlands, Version 0, January 2009. Global Standards Source: NOGEPA Guideline 14, Helideck Operations and Procedures Manual, Netherlands, Version 2, December 2011. Global StandardsCasing Liner
Definition(s)
Casing Liner
Casing string with its uppermost point inside a previous casing string and not in the wellhead.Source: ISO 16530-1:2017, Petroleum and natural gas industries - Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards
Casing Liner
“Casing liner” means a casing that is suspended from a string of casing previously installed in a well and does not extend to the wellhead (tubage partiel). 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. RegulationsNORM
Definition(s)
NORM
“NORM” means the naturally occurring radioactive materials regulated by 20.3.14 NMAC. Source: Oil and Gas, New Mexico Administrative Code Title 19, Chapter 15, January 2013. RegulationsNORM
Naturally Occurring Radioactive Material(s). Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global Standards Source: NOGEPA Industrial Guideline No. 16, Working with Naturally Occurring Radioactive Materials (NORM), Netherlands, Version 1, January 2009. Global Standards 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 GuidanceNORM
Radioactive materials that are present in facilities and installations in the E&P industry are known as NORM, which stands for Naturally Occurring Radioactive Materials. This is a general term for materials that consist of elements or compounds that occur naturally and are a source of ionising radiation as a natural property. This term is used to distinguish between substances that have been made radioactive by artificial means. Another acronym that is used is LSA, which stands for Low Specific Activity. Source: NOGEPA Industrial Guideline No. 16, Working with Naturally Occurring Radioactive Materials (NORM), Netherlands, Version 1, January 2009. Global StandardsNORM
NORM stands for Naturally Occurring Radioactive Materials and is a general term for naturally occurring radioactive substances that may be present in gas- and oil treatment plants. Traces of natural radioactive substances have existed since the formation of the earth. These traces are still present in gas and oil bearing formations and are brought to surface together with gas, oil and especially water. NORM may be found on the insides of installations in the form of scale on the walls, or as dust between flanges and in the sludge on the bottom of vats and tanks. Closed installation: NORM can be present on the inside but not on the outside so there is no radiation risk on closed installations. NORM stands for radioactive substances, so working with it may introduce a certain risk, which not related to radiation but only to internal contamination. This risk is especially relevant when NORM is present in the air as dust and if it can inhaled. Special precautions are to be taken when working on opened installations, such as wearing disposable overalls, rubber boots, gloves and if necessary, breathing protection. Source: NOGEPA Industrial Guideline No. 16, Working with Naturally Occurring Radioactive Materials (NORM), Netherlands, Version 1, January 2009. Global StandardsCPD
Definition(s)
CPD
Current Product Definition. Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global StandardsCPD
Complete design verified and validated definition of the requirements for the current assembled product, single equipment unit, or component part, including specified limits, tolerances, health requirements, safety requirements, environmental requirements, limitations of use, customer-specific requirements, design acceptance criteria, materials of construction, materials processing requirements, physical properties, physical dimensions, requirements for manufacturing process controls, inspection, assembly, testing, marking, handling, storage, maintenance, service, and record requirements. Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global StandardsCPD
“CPD” means central point delivery. Source: Oil and Gas, New Mexico Administrative Code Title 19, Chapter 15, January 2013. RegulationsBS&W
Definition(s)
BS&W
Base sediment and water. Source: ISO 16530-1:2017, Petroleum and natural gas industries - Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global StandardsBS&W
"BS&W" means basic sediment and water which is that portion of fluids and/or solids that settle in the bottom of storage tanks and/or treating vessels and is unsaleable to the first purchaser in its present form. BS&W usually consists of water, paraffin, sand, scale, rust, and other sediments. Source: Corporation Commission, Oil and Gas Conservation, Oklahoma Administrative Code 165:10, February 2013. RegulationsBS&W
“BS&W” means basic sediments and water. Source: Oil and Gas, New Mexico Administrative Code Title 19, Chapter 15, January 2013. RegulationsOffset
Definition(s)
Offset
Horizontal component of control path length. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global StandardsOffset
Measureable outcomes resulting from actions designed to compensate for significant residual impacts arising from project development and persisting after appropriate prevention and mitigation measures have been taken. Adapted from the definition of "Biodiversity offsets" in Business and 'Biodiversity Offsets Programme ('BBOP) Glossary. 2nd ed. Washington, D.C.: BBOP, 2012. Available from http://www.forest-trends.org Source: IOGP Report No. 510, Operating Management System Framework for controlling risk and delivering high performance in the oil and gas industry, International Association of Oil & Gas Producers, June 2014. Global StandardsOffset
"Offset" means a well drilled on a forty-acre [16.19-hectare] tract cornering or contiguous to a forty-acre [16.19-hectare] tract having an existing oil well, or a well drilled on a one hundred sixty-acre [64.75-hectare] tract cornering or contiguous to a one hundred sixty acre [64.75-hectare] tract having an existing gas well; provided, however, that for wells subject to a fieldwide spacing order, "offset" means any wells located on spacing units cornering or contiguous to the spacing unit or well which is the subject of an inquiry or a hearing. Source: Oil and gas Conservation, North Dakota Administrative Code, Chapter 43-02-03, April 2012. RegulationsCondensate
Definition(s)
Condensate
Light hydrocarbon liquid obtained by condensation of hydrocarbon vapors. Consists of varying proportions of butane, propane, pentane, and heavier fractions with little or no ethane or methane. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsCondensate
"Condensate" means a liquid hydrocarbon which:- Was produced as a liquid at the surface,
- Existed as gas in the reservoir, and
- Has an API gravity greater than or equal to fifty degrees, unless otherwise proven.
Condensate
“Condensate” means liquid hydrocarbons that were originally in the gaseous phase in the reservoir. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsCondensate
"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. Source: Oil and gas Conservation, North Dakota Administrative Code, Chapter 43-02-03, April 2012. RegulationsCondensate
“Condensate” means the liquid recovered at the surface that results from condensation due to reduced pressure or temperature of petroleum hydrocarbons existing in a gaseous phase in the reservoir. Source: Oil and Gas, New Mexico Administrative Code Title 19, Chapter 15, January 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. 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 StandardsStripper Well
Definition(s)
Stripper Well
A well having minimal hydrocarbon production. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsStripper Well
Stripper Well―shall have the ordinary meaning as that term is generally understood in the oil and gas industry, but shall not be construed to include naturally flowing or artificial gas-lift oil wells. Source: Natural Resources, Office of Conservation – General Operations, Louisiana Administrative Code, Title 43, Part XIX, March 2013. RegulationsProducts
Definition(s)
Products
The result of activity represented in the form of materials or articles and intended for further utilisation for economic or other purposes. Source: Federal Law on Technical Regulation, No. 184-FZ, Russian Federation, December 2002 (amended September 2010). RegulationsProducts
Person, Producer, Oil, Illegal Oil, and Product―the meaning prescribed for each of said words as defined in R.S. 30:3. Source: Natural Resources, Office of Conservation – General Operations, Louisiana Administrative Code, Title 43, Part XIX, March 2013. RegulationsProducts
Person, Producer, Gas, and Products―shall have the meaning prescribed for each of said words as defined in R.S. 30:3. Source: Natural Resources, Office of Conservation – General Operations, Louisiana Administrative Code, Title 43, Part XIX, March 2013. RegulationsInterested Party
Definition(s)
Interested Party
“Interested party” means, in respect of an environmental assessment, any person or body having an interest in the outcome of the environmental assessment for a purpose that is neither frivolous nor vexatious; partie intéressée. Source: Canadian Environmental Assessment Act, 1992, c. 37, Canada, as consolidated November 2003. LegislationInterested Party
Person or organization that can affect, be affected by, or perceive themselves to be affected by a decision or activity. Source: ISO/IEC 27000:2014, Information technology — Security techniques — Information security management systems — Overview and vocabulary, Third Edition, January 2014. Global StandardsInterested Party
Individual, group or organization affected by the performance of a certified person or the certification body EXAMPLE Certified person; user of the services of the certified person; employer of the certified person; consumer; governmental authority.- Note 1 to entry: Interested parties can be stakeholders.