Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Force Majeure Event
Definition(s)
Force majeure event:
An event beyond your control such as war, act of terrorism, crime, or act of nature which prevents you from operating the wells and meters on your OCS facility. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsCompositional Analysis
Definition(s)
Compositional Analysis:
Separating mixtures into identifiable components expressed in mole percent. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsAllocation Meter
Definition(s)
Allocation meter:
A meter used to determine the portion of hydrocarbons attributable to one or more platforms, leases, units, or wells, in relation to the total production from a royalty or allocation measurement point. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsProduction Facility
Definition(s)
Production Facilities
the equipment used for the production of oil or gas located on a production installation, and includes separation, treating and processing facilities, equipment and facilities used in support of production operations, storage areas or tanks and dependent personnel accommodations. Source: Atlantic Canada Offshore Petroleum Industry, Standard Practice for the Training and Qualifications of Personnel, 2013, Canadian Association of Petroleum Producers, Global StandardsProduction Facilities
Production facilities means OCS facilities that receive hydrocarbon production either directly from wells or from other facilities that produce hydrocarbons from wells. They may include processing equipment for treating the production or separating it into its various liquid and gaseous components before transporting it to shore. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsProduction Facilities
“Production facility” means equipment for the production of oil or gas located at a production site, including separation, treating and processing facilities, equipment and facilities used in support of production operations, landing areas, heliports, storage areas or tanks and dependent personnel accommodations, but not including any associated platform, artificial island, subsea production system, drilling equipment or diving system (matériel de production). Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. Regulations 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 Drilling and Production Regulations, SOR/2009-317, Canada, current to May 31, 2012. RegulationsProduction Facilities
“Production facility” means production, separating, treating and processing equipment and facilities necessary in production operations, including airstrips, helicopter landing areas and field accommodation (installation de production). 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. RegulationsProduction Facilities
“Production facility” means production, separating, treating and processing equipment and facilities necessary in support of production, including helicopter landing areas and field accommodation. Source: Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. RegulationsProduction Facility
Typically, an area where production wells, stock tanks, separators, lease automatic custody transfer (LACT) units and other production equipment are located. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. RegulationsOut-of-service Pipeline
Definition(s)
Out-of-service pipelines:
Out-of-service pipelines are those pipelines that have not been used to transport oil, natural gas, sulfur, or produced water for more than 30 consecutive days. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsLease Term Pipeline
Definition(s)
Lease term pipelines:
Lease term pipelines are those pipelines owned and operated by a lessee or operator and are wholly contained within the boundaries of a single lease, unitized leases, or contiguous (not cornering) leases of that lessee or operator. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsDOT Pipeline
Definition(s)
DOT pipelines:
DOT pipelines include:- Transporter-operated pipelines currently operated under DOT requirements governing design, construction, maintenance, and operation;
- Producer-operated pipelines that DOI and DOT have agreed are to be regulated under DOT requirements governing design, construction, maintenance, and operation; and
- Producer-operated pipelines downstream (generally shoreward) of the last valve (including associated safety equipment) on the last production facility on the OCS that do not connect to a transporter-operated pipeline on the OCS before crossing into State waters and that are regulated under 49 CFR parts 192 and 195.
DOI Pipeline
Definition(s)
DOI pipelines:
DOI pipelines include:- Producer-operated pipelines extending upstream (generally seaward) from each point on the OCS at which operating responsibility transfers from a producing operator to a transporting operator;
- Producer-operated pipelines extending upstream (generally seaward) of the last valve (including associated safety equipment) on the last production facility on the OCS that do not connect to a transporter-operated pipeline on the OCS before crossing into State waters;
- Producer-operated pipelines connecting production facilities on the OCS;
- Transporter-operated pipelines that DOI and DOT have agreed are to be regulated as DOI pipelines; and
- All OCS pipelines not subject to regulation under 49 CFR parts 192 and 195.
Revised OCS Plan
Definition(s)
Revised OCS plan:
Revised OCS plan means an EP, DPP, or DOCD that proposes changes to an approved OCS plan, such as those in the location of a well or platform, type of drilling unit, or location of the onshore support base (see 30 CFR 550.283(a)). Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsExpected Surface Pressure
Definition(s)
Expected surface pressure:
Expected surface pressure means the highest pressure predicted to be exerted upon the surface of a well. In calculating expected surface pressure, you must consider reservoir pressure as well as applied surface pressure. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsSupplemental OCS Plan
Definition(s)
Supplemental OCS plan:
Supplemental OCS plan means an EP, DPP, or DOCD that proposes the addition to an approved OCS plan of an activity that requires approval of an application or permit (see 30 CFR 550.283(b)). Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsResubmitted OCS Plan
Definition(s)
Resubmitted OCS plan:
Resubmitted OCS plan means an EP, DPP, or DOCD that contains changes you make to an OCS plan that BOEM has disapproved (see 30 CFR 550.234(b), 550.272(a), and 550.273(b)). Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsOffshore Vehicle
Definition(s)
Offshore vehicle:
Offshore vehicle means a vehicle that is capable of being driven on ice. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsNon-conventional Production or Completion Technology
Definition(s)
Non-conventional production or completion technology:
Non-conventional production or completion technology includes, but is not limited to, floating production systems, tension leg platforms, spars, floating production, storage, and offloading systems, guyed towers, compliant towers, subsea manifolds, and other subsea production components that rely on a remote site or host facility for utility and well control services. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsNew or Unusual Technology
Definition(s)
New or unusual technology:
New or unusual technology means equipment or procedures that:- Have not been used previously or extensively in a BSEE OCS Region;
- Have not been used previously under the anticipated operating conditions; or
- Have operating characteristics that are outside the performance parameters established by this part.
Amendment
Definition(s)
Amendment:
Amendment means a change you make to an EP, DPP, or DOCD that is pending before BOEM for a decision (see 30 CFR 550.232(d) and 550.267(d)). Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsOCS
Definition(s)
OCS
Outer continental shelf. Source: API RP 2SIM, Structural Integrity Management of Fixed Offshore Structures, First Edition, November 2014. Global Standards Source: API RP 49, Recommended Practice for Drilling and Well Servicing Operations Involving Hydrogen Sulfide, Third Edition, May 2001. Global StandardsOCS
Outer continental shelf (Gulf of Mexico). Source: Deepwater Well Control Guidelines. IADC GuidelinesOCS
OCS means Outer Continental Shelf. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsNTL
Definition(s)
NTL
NTL means Notice to Lessees and Operators. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsNTL
Notice to Lessees. Source: Deepwater Well Control Guidelines. IADC GuidelinesNPDES
Definition(s)
NPDES:
NPDES means National Pollutant Discharge Elimination System. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). Regulations Source: Deepwater Well Control Guidelines. IADC GuidelinesEP
Definition(s)
EP
Equivalent P-number. Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global StandardsEP
EP means Exploration Plan. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsEP
Explosion-proof. Source: API RP 14F, Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class 1, Division 1 and Division 2 Locations, Fifth Edition, July 2008. Global StandardsEIA
Definition(s)
EIA
EIA means Environmental Impact Analysis. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsEIA
Environmental Impact Assessment. 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 GuidelinesDWOP
Definition(s)
DWOP:
DWOP means Deepwater Operations Plan. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). Regulations Source: Deepwater Well Control Guidelines. IADC GuidelinesDPP
Definition(s)
DPP:
Drill pipe pressure. Source: Deepwater Well Control Guidelines. IADC GuidelinesDPP:
DPP means Development and Production Plan. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsDOCD
Definition(s)
DOCD:
DOCD means Development Operations Coordination Document. Source: Deep Water Well Control Guidlines. IADC Guidelines Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsCZMA
Definition(s)
CZMA:
CZMA means Coastal Zone Management Act. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsCID
Definition(s)
CID
Chemical injection – downhole. Source: API SPEC 17D, Design and Operation of Subsea Production Systems—Subsea Wellhead and Tree Equipment, Upstream Segment, Second Edition May 2011 (Errata September 2011). Global StandardsCID:
CID means Conservation Information Document. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsCID
Isotropically consolidated drained test. Source: ABS Guidance Notes on Geotechnical Performance of Spudcan Foundations, January 2017. Global StandardsBSEE
Definition(s)
BSEE
Bureau of Safety and Environmental Enforcement.Source:API RP T-1, Creating Orientation Programs for Personnel Going Offshore, Fifth Edition, November 2016. Global Standards