Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Accommodation Installation
Definition(s)
Accommodation Installation
“Accommodation installation” means an installation that is used to accommodate persons at a production site or drill site and that functions independently of a production installation, drilling installation or diving installation, and includes any associated dependent diving system (installation d’habitation) Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013. Regulations Source: Nova Scotia Offshore Certificate of Fitness Regulations, SOR/95-187, Canada, current to May 31, 2012. Regulations Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. RegulationsAccommodation Space
Definition(s)
Accommodation space
Accommodation space includes, sleeping, mess, hospital, recreational, toilet, washing and shower spaces, and corridors. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsAccommodation space
Accommodation spaces are those used for public spaces, corridors, lavatories, cabins, offices, hospitals, cinemas, games and hobbies rooms, pantries containing no cooking appliances and similar spaces. ‘Public spaces’ are those portions of the accommodation which are used for halls, dining rooms, lounges and similar permanently enclosed spaces. Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 7, Safety Systems, Hazardous Areas and Fire, June 2013, Lloyd’s Register, Global StandardsAccord Acts
Definition(s)
Accord Acts
“Accord Acts” means- the Canada-Newfoundland Atlantic Accord Implementation Act, and
- the Canada-Nova Scotia Offshore Petroleum Resources Accord Implementation Act; lois de mise en oeuvre.
Accord Acts
The Canada-Nova Scotia Offshore Petroleum Resources Accord Implementation Act and Canada-Nova Scotia Offshore Petroleum Resources Accord Implementation (Nova Scotia) Act, Canada-Newfoundland Atlantic Accord Implementation Act and the Canada Newfoundland and Labrador Atlantic Accord Implementation (Newfoundland and Labrador) Act. Source: Incident Reporting and Investigation Guidelines, The Canada-Nova Scotia Offshore Petroleum Board and Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada, November 30, 2012. Regulatory Guidance 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: Safety 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 Guidance Source: Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. RegulationsAccreditation
Definition(s)
Accreditation
Third-party attestation related to a conformity assessment body conveying formal demonstration of its competence to carry out specific conformity assessment tasks- Note: 1 to entry: Accreditation refers to conformity assessment bodies only, and not to persons.
Accreditation
Official recognition by the body for accreditation of a natural person's or legal entity's authority to perform works in a certain sphere of compliance evaluation. Source: Federal Law on Technical Regulation, No. 184-FZ, Russian Federation, December 2002 (amended September 2010). RegulationsAccreditation
Third-party attestation related to a conformity assessment body conveying formal demonstration of its competence to carry out specific conformity assessment tasks. Source: ISO/IEC 17011:2004, Conformity assessment – General requirements for accreditation bodies accrediting conformity assessment bodies. Global StandardsAccredited Laboratory
Definition(s)
Accredited Laboratory
A laboratory as defined in Texas Water Code, §5.801. Source: Oil and Gas Division, Texas Administrative Code, Title 16, Chapter 3, February 2013. RegulationsAcidizing
Definition(s)
Acidizing
“Acidizing” means the act of pumping an acidic solution into a wellbore to remove any materials from the perforations, pipe, and walls of the producing formation and includes the act of pumping the substance into formations to improve permeability. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. RegulationsAcidizing
The act of pumping an acidic solution into a wellbore to remove materials from the perforations, pipe, and walls of the producing formation or pumping the solution into formations to improve permeability. Source: API RP 54, Recommended Practice for Occupational Safety for Oil and Gas Well Drilling and Servicing Operations, Third Edition, August 1999 (2007). Global StandardsAcoustic Signal
Definition(s)
Acoustic Signal
“Acoustic signal” means a coded sound signal which is released and transmitted by a device designed for that purpose, without the use of a human or artificial voice. Source: The Offshore Installations (Prevention of Fire and Explosion, and Emergency Response) Regulations 1995, S.I. 1995/743, 1995. RegulationsAct
Definition(s)
Act
“Act” means the Canada Oil and Gas Operations Act (Loi). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Drilling and Production Regulations, SOR/2009-315, February 2013. Regulations Source: Canada Oil and Gas Geophysical Operations Regulations, SOR/96-117, Canada, current to April 29, 2013. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013. Regulations 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 GuidanceACT
The assumed malevolent scenario under study.
Source:API STANDARD 780, Security Risk Assessment Methodology for the Petroleum and Petrochemical Industries, First Edition, May 2013. Global StandardsAct
“Act” means the Oil and Gas Production and Conservation Act (Loi). Source: Canada Oil and Gas Diving Regulations, SOR/88-600, February 2013. RegulationsAct
“Act” means Part II of the Canada Labour Code (Loi). Source: Canada Oil and Gas Occupational Safety and Health Regulations, SOR/87-612, February 2013. Regulations Source: Oil and Gas Occupational Safety and Health Regulations, SOR/87-612, Canada, current to April 29, 2013. RegulationsAct
ACT shall mean the Oil and Gas Conservation Act of the State of Colorado. Source: Oil and Gas Conservation Commission, Practice and Procedure, Code of Colorado Regulations, 2 CCR 404-1, February 2013. RegulationsAct
“ACT” means automatic custody transfer. Source: Oil and Gas, New Mexico Administrative Code Title 19, Chapter 15, January 2013. RegulationsAct
Act means the OCS Lands Act, as amended (43 U.S.C. 1331 et seq.). Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsAct
Act means the Outer Continental Shelf Lands Act of 1953 (43 U.S.C. 1331 et seq. ), as amended by the Outer Continental Shelf Lands Act Amendments of 1978 (Pub. L. 95-372). Source: Outer Continental Shelf Activities, 33 CFR 140-147 (2013). RegulationsAct
"Act" means State of Wyoming Occupational Health and Safety Act, as amended 1992. Source: State of Wyoming Occupational Safety and Health Rules and Regulations for Oil and Gas Well Drilling, Revised January 8, 2013. RegulationsAct
Act means the Health and Safety in Employment Act 1992. Source: Health and Safety in Employment (Petroleum Exploration and Extraction) Regulations 2013, SR 2013/208, New Zealand, as of May 2013. RegulationsACT
Automatic custody transfer. API RP 500, Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1 and Division 2, Third Edition, December 2012, Global StandardsAct
Act—The Oil and Gas Act (58 P. S. § § 601.101—601.605). Source: Oil and Gas Wells, Pennsylvania Code, Title 25, Chapter 78, December 2012. RegulationsAct
Act means the Canada-Nova Scotia Offshore Petroleum Resources Accord Implementation Act. Source: Nova Scotia Offshore Area Petroleum Geophysical Operations Regulations, SOR/95-144, Canada, current to May 31, 2012. Regulations Source: Nova Scotia Offshore Certificate of Fitness Regulations, SOR/95-187, Canada, current to May 31, 2012. Regulations Source: Nova Scotia Offshore Area Petroleum Diving Regulations, SOR/95-189, Canada, current to May 31, 2012. Regulations Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. Regulations Source: Nova Scotia Offshore Petroleum Drilling and Production Regulations, SOR/2009-317, Canada, current to May 31, 2012. 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 Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. RegulationsAct
Act means the Canada Newfoundland Atlantic Accord Implementation Act. 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 GuidanceAct
The Accord Acts and the Canada Oil and Gas Operations Act. 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 GuidanceAct
Act means the Offshore Petroleum and Greenhouse Gas Storage Act 2006. Source: Offshore Petroleum and Greenhouse Gas Storage (Environment) Regulations 2009 (Statutory Rules 1999 No. 228 as amended), Australia, prepared on 1 January 2012. Regulations Source: Offshore Petroleum and Greenhouse Gas Storage (Resource Management and Administration) Regulations 2011 (Select Legislative Instrument 2011 No. 54 as amended), Australia, prepared on 1 January 2012. Regulations Source: Offshore Petroleum and Greenhouse Gas Storage (Safety) Regulations 2009 (Select Legislative Instrument 2009 No. 382 as amended), Australia, prepared on 1 January 2012. RegulationsThis Act
This Act includes the regulations. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationAct, The
The enabling legislation that creates NOPSEMA, provides its functions and powers for its OHS inspectors and imposes duties on those who are regulated by NOPSEMA. The Act has changed over time:- From 1st January 2005 to 30th June 2008: The Petroleum (Submerged Lands) Act 1967
- From 1st July 2008 to 20th November 2008 The Offshore Petroleum Act 2006
- From 21st November 2008: The Offshore Petroleum and Greenhouse Gas Storage Act 2006
Act
The Canada Oil and Gas Operations Act, the Canada-Nova Scotia Atlantic Accord Implementation Act and the Canada-Newfoundland and Labrador Atlantic Accord Implementation Act. Source: Safety 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 GuidanceAct
Act means the Health and Safety in Employment Act 1992. Source: Health and Safety in Employment (Mining Administration) Regulations 1996, SR 1996/220, New Zealand, as of January 2011. RegulationsAct
“Act” means the Oilfields (Regulation and Development) Act, 1948 (53 of 1948. Source: Petroleum and Natural Gas (Safety in Offshore Operations) Rules, 2008, India, 18th June 2008. RegulationsAct
Act: Mijnbouwwet. Source: Mining Decree of the Netherlands, Netherlands, 2003 (as amended in 2007). LegislationAct
“Act” means the Petroleum Act, 1934 (30 of 1934). Source: The Petroleum Rules, 2002, India, 13th March 2002. RegulationsAct
“Act” means the Petroleum Act, 1934 (30 of 1934. Source: The Petroleum Rules, 1976, India, 1976. RegulationsActing Manager
Definition(s)
Acting Manager
Acting manager means the employee designated for the purpose referred to in regulation 7(1)(b). Source: Health and Safety in Employment (Mining Administration) Regulations 1996, SR 1996/220, New Zealand, as of January 2011. RegulationsActing Manager
Acting manager means the employee designated for the purpose referred to in the Health and Safety in Employment (Mining Administration) Regulations 1996. Source: Health and Safety in Employment (Mining—Underground) Regulations 1999, SR 1999/331, New Zealand, as of 8 October 1999. RegulationsActive Operation
Definition(s)
Active Operation
Regular and continuing activities related to the production of oil and gas for which the operator has all necessary permits. In the case of a well that has been inactive for 12 consecutive months or longer and that is not permitted as a disposal or injection well, the well remains inactive for purposes of this section, regardless of any minimal activity, until the well has reported production of at least 10 barrels of oil for oil wells or 100 mcf of gas for gas wells each month for at least three consecutive months. Source: Oil and Gas Division, Texas Administrative Code, Title 16, Chapter 3, February 2013. RegulationsActive Underground Mine
Definition(s)
Active Underground Mine
“Active underground mine” means an underground excavation of coal or industrial minerals in any phase of the mining operation which is required to be permitted by the division of mineral resources management, regularly and routinely examined by state-certified forepersons, and inspected quarterly by mine safety inspectors of the division of mineral resources management for compliance with mine safety laws, including the active workings of a mine, any and all sealed or unsealed boreholes, shafts, drifts, slopes or any other openings to the surface, and any and all in-seam contiguous, abandoned areas physically connected to but separated by permanently constructed seals from the current active workings where miners are able to work or travel. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsActivities Associated With The Exploration, Development, And Production Of Oil Or Gas Or Geothermal Resources
Definition(s)
Activities Associated With The Exploration, Development, And Production Of Oil Or Gas Or Geothermal Resources
Activities associated with: (A) the drilling of exploratory wells, oil wells, gas wells, or geothermal resource wells; (B) the production of oil or gas or geothermal resources, including:- activities associated with the drilling of injection water source wells that penetrate the base of usable quality water;
- activities associated with the drilling of cathodic protection holes associated with the cathodic protection of wells and pipelines subject to the jurisdiction of the commission to regulate the production of oil or gas or geothermal resources;
- activities associated with gasoline plants, natural gas or natural gas liquids processing plants, pressure maintenance plants, or repressurizing plants;
- activities associated with any underground natural gas storage facility, provided the terms "natural gas" and "storage facility" shall have the meanings set out in the Texas Natural Resources Code, §91.173;
- activities associated with any underground hydrocarbon storage facility, provided the terms "hydrocarbons" and "underground hydrocarbon storage facility" shall have the meanings set out in the Texas Natural Resources Code, §91.201; and
- activities associated with the storage, handling, reclamation, gathering, transportation, or distribution of oil or gas prior to the refining of such oil or prior to the use of such gas in any manufacturing process or as a residential or industrial fuel;
Activities Associated With The Exploration, Development, And Production Of Oil Or Gas Or Geothermal Resources
Activities associated with: (A) the drilling of exploratory wells, oil wells, gas wells, or geothermal resource wells; (B) the production of oil, gas, or geothermal resources, including:- activities associated with the drilling of injection water source wells that penetrate the base of usable quality water;
- activities associated with the drilling of cathodic protection holes associated with the cathodic protection of wells and pipelines subject to the jurisdiction of the commission to regulate the production of oil, gas, or geothermal resources;
- activities associated with natural gas or natural gas liquids processing plants or reservoir pressure maintenance or repressurizing plants;
- activities associated with any underground natural gas storage facility, provided the terms "natural gas" and "storage facility" shall have the meanings set out in Texas Natural Resources Code, §91.173;
- activities associated with any underground hydrocarbon storage facility, provided the terms "hydrocarbons" and "underground hydrocarbon storage facility" shall have the meanings set out in Texas Natural Resources Code, §91.201; and
- activities associated with the storage, handling, reclamation, gathering, transportation, or distribution of oil or gas prior to the refining of such oil or prior to the use of such gas in any manufacturing process or as a residential or industrial fuel;
Activity
Definition(s)
Activity
Defined work of an asset, business or company that results in specific, measurable outputs. "Activities" in this guidance is a general term that may include individual tasks or groups of tasks, or it may define entire operations, initiatives or projects of the company. For the petroleum sector, example activities at the company level include oil and gas exploration, drilling, production, and processing, refining, and transport and marketing of products. Activities should also be considered for all periods of the asset or business lifecycle – for example, construction and decommissioning projects. 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 StandardsActivity
“Activity” includes, unless the context otherwise requires, a diving project and standing a vessel by. Source: The Health and Safety at Work etc. Act 1974 (Application outside Great Britain) Order 2001, UK S.I. 2013/214, 2013. RegulationsActivity
Activity means a petroleum activity or a greenhouse gas activity. Source: Offshore Petroleum and Greenhouse Gas Storage (Environment) Regulations 2009 (Statutory Rules 1999 No. 228 as amended), Australia, prepared on 1 January 2012. RegulationsActivity
A reference in these Regulations to an activity includes, where the context permits, a reference to:- a proposed activity; and
- any stage of an activity.
Activity
Work to be carried out as part of a process characterized by a set of specific inputs and tasks that produce a set of outputs to meet customer requirements. Source: International Association of Drilling Contractors, Appendix 2 to Health, Safety and Environment Case Guidelines for Offshore Drilling Contractors, Issue 3.3.2, February 2010. IADC GuidelinesActivity
Preparation for and implementation of operations. Source: NORSOK D-010, Well integrity in drilling and well operations, Rev. 3, August 2004. Global StandardsActivity In Connection With An Installation
Definition(s)
Activity In Connection With An Installation
Any reference in these Regulations to an activity in connection with an installation is a reference to any activity in connection with an installation, or any activity which is immediately preparatory thereto, whether carried on from the installation itself, in or from a vessel or in any other manner, other than—- transporting, towing or navigating the installation; and
- any activity in or from a vessel which is ready to give assistance in the event of an emergency on or near the installation.
Additive
Definition(s)
Additive
Any chemical substance or combination of substances, including a proppant, contained in a hydraulic fracturing fluid that is intentionally added to a base fluid for a specific purpose whether or not the purpose of any such substance or combination of substances is to create fractures in a formation. Source: Oil and Gas Division, Texas Administrative Code, Title 16, Chapter 3, February 2013. RegulationsAdditive
Material added to a cement slurry to modify or enhance some desired property.- NOTE: Properties that are commonly modified include setting time (by use of retarders or accelerators), fluid loss, viscosity, etc.
Additive
Material added to a cement slurry to modify or enhance some desired property.- NOTE: Common properties that are modified include: setting time (by use of retarders or accelerators), fluid loss control, viscosity, etc.
Adequate
Definition(s)
Adequate
Adequate: equal to the requirement or occasion; fully sufficient, suitable or fit (The Macquarie Dictionary Online © 2007). Source: NOPSEMA Guidance note: Safety Case Content and Level of Detail, N-04300-GN0106, Australia, Revision 5, December 2012. Regulatory GuidanceAdequate
- in relation to ventilation, means where the concentration of the inflammable gas in gas-air mixture does not reach the lower inflammable limit, or
- where applied to provision of facilities for fire-fighting means the facilities so provided are in accordance with the prevalent recognized standards or codes safety.