Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Periodic
Definition(s)
Periodic:
Periodic means occurring or recurring at regular intervals. Each lessee must specify the intervals for periodic training and periodic assessment of training needs in their training programs. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsYour
Definition(s)
Your:
You or your — the lessee or the operator or other lessees' representative engaged in operations in the Outer Continental Shelf (OCS). Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsI or You
Definition(s)
I or you:
I or you means the lessee engaged in oil, gas, or sulphur operations in the Outer Continental Shelf (OCS). Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsID
Relative density.
Source: ABS Guidance Notes on Geotechnical Performance of Spudcan Foundations, January 2017. Global StandardsEmployee
Definition(s)
Employee
A person who is employed by, or contracted to perform work under the supervision of, an employer and includes a dependent contractor. Note: OSH (NL) 1.1; OSH (NS) Element 1, Part 1, Section 1.1. 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: Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. RegulationsEmployee
“Employee” means a person employed by or contracted to perform work under the supervision of an employer. Source: Atlantic Canada Offshore Petroleum Industry, Standard Practice for the Training and Qualifications of Personnel, 2013, Canadian Association of Petroleum Producers, Global Standards Source: Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. RegulationEmployee
Employee means direct employees of the lessees who are assigned well control, deepwater well control, or production safety duties. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsEmployee
Employee, in relation to an employer, means an employee of that employer. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationEmployee
"Employee" means a person permitted to work by an employer in employment for wages, salary or commission. Source: State of Wyoming Occupational Safety and Health Rules and Regulations for Oil and Gas Well Drilling, Revised January 8, 2013. RegulationsEmployee
Under the Working Conditions Act (in Dutch: ‘Arbowet’), an employee of the operator is: a. A person who performs activities on the basis of a labour contract with the operator (per definition from the ‘Arbowet’); b. Subcontracted personnel; the “extra hands”, trainees and volunteers who do not have their own labour contracts with the operator, but who do work under his supervision (per definition from the ‘Arbowet’; c. A person that performs activities under the supervision of the operator, which means that the operator has full control over his activities (evaluation of “under the supervision of” is based on the real situation, regardless of the agreement that forms the basis for the person’s employment). NOTE: Only in these cases, the operator is also employer of the particular employee. Source: NOGEPA Industrial Guideline No. 5, Reporting Accidents and Incidents Mining Activities, Netherlands, Version 3, March 2010. Global StandardsEmployee
Means a person employed by any other person to do any work for hire or reward. Source: Guidelines for Occupational Diving 2004, Occupational Safety and Health Service, New Zealand, updated October 2010. Regulatory GuidanceEmployee
Employee includes employees of other participants also i.e those of contractors, service providers etc. as defined at rule 2(1)(l). Source: Guidance Notes on Petroleum and Natural Gas (Safety in Offshore Operations) Rules, 2008, Oil Industry Safety Directorate (India), 2012. Regulatory GuidanceEmployee
In these regulations, employee,— (a) in relation to a person who controls a place of work, means a person lawfully at work in the place; and (b) in relation to a principal, means an employee of a contractor or subcontractor or, if a contractor or subcontractor is an individual, the contractor or subcontractor. Source: Health and Safety in Employment (Petroleum Exploration and Extraction) Regulations 2013, SR 2013/208, New Zealand, as of May 2013. RegulationsEmployee
Employee, subject to sections 3C to 3F, means any person of any age employed by an employer to do any work (other than residential work) for hire or reward under a contract of service and, in relation to any employer, means an employee of the employer. Source: Health and Safety in Employment Act 1992, Public Act 1992 No 96, New Zealand, as of 1 July 2011. LegislationEmployee
Employee: (a) in relation to an operation, means an employee of the operation; and (b) in relation to a person who controls a place of work, means a person working in the place of work employer includes a person who controls a place of work. Source: Health and Safety in Employment (Mining Administration) Regulations 1996, SR 1996/220, New Zealand, as of January 2011. RegulationsEmployees
An individual on the payroll of a company, including corporate and management personnel. An individual employed under a short-term or part-time contract is considered an employee provided they are paid directly by the company. 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 StandardsEmployees
“Employees” means employees of the operator and those of other participants. Source: Petroleum and Natural Gas (Safety in Offshore Operations) Rules, 2008, India, 18th June 2008. RegulationsDeepwater Well Control
Definition(s)
Deepwater well control:
Deepwater well control means well control when you are using a subsea BOP system. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsViolator
Definition(s)
Violator:
Violator means a person responsible for a violation. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsViolation
Definition(s)
Violation:
Violation means failure to comply with the Outer Continental Shelf Lands Act (OCSLA) or any other applicable laws, with any regulations issued under the OCSLA, or with the terms or provisions of leases, licenses, permits, rights-of-way, or other approvals issued under the OCSLA. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsReviewing Officer
Definition(s)
Reviewing Officer:
Reviewing Officer means a BSEE employee assigned to review case files and assess civil penalties. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsCivil Penalty
Definition(s)
Civil penalty:
Civil penalty means a fine. It is a BSEE regulatory enforcement tool used in addition to Notices of Incidents of Noncompliance and directed suspensions of production or other operations. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsCase File
Definition(s)
Case file:
Case file means a BSEE document file containing information and the record of evidence related to the alleged violation. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsVerification/Calibration
Definition(s)
Verification/Calibration:
Testing and correcting, if necessary, a measuring device to ensure compliance with industry accepted, manufacturer's recommended, or regulatory required standard of accuracy. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsTemperature Base
Definition(s)
Temperature base:
The temperature at which gas and liquid hydrocarbon volumes and quality are reported. The standard temperature base is 60 °F. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsSurface Commingling
Definition(s)
Surface commingling:
The surface mixing of production from two or more leases and/or unit participating areas prior to royalty measurement. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsStandard Conditions
Definition(s)
Standard conditions:
Atmospheric pressure of 14.73 pounds per square inch absolute (psia) and 60 °F. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsSales Meter
Definition(s)
Sales meter:
A meter at which custody transfer takes place (not necessarily a royalty meter). Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsRun Ticket
Definition(s)
Run ticket:
The invoice for liquid hydrocarbons measured at a royalty point. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsRoyalty Tank
Definition(s)
Royalty tank:
An approved tank in which liquid hydrocarbons are measured and upon which royalty volumes are based. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsRoyalty Meter
Definition(s)
Royalty meter:
A meter approved for the purpose of determining the volume of gas, oil, or other components removed, saved, or sold from a Federal lease. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsProve
Definition(s)
Prove:
To determine (as in meter proving) the relationship between the volume passing through a meter at one set of conditions and the indicated volume at those same conditions. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsPressure Base
Definition(s)
Pressure base
The pressure at which gas volumes and quality are reported. The standard pressure base is 14.73 psia. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsPressure base
Assumed atmospheric pressure used in calculations requiring "absolute" pressure. (DATUM. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPipeline (Retrograde) Condensate
Definition(s)
Pipeline (retrograde) condensate:
Liquid hydrocarbons which drop out of the separated gas stream at any point in a pipeline during transmission to shore. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsOperating Meter
Definition(s)
Operating meter:
A royalty or allocation meter that is used for gas or liquid hydrocarbon measurement for any period during a calibration cycle. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsNatural Gas
Definition(s)
Natural gas
Typical composition is (approximate percentages) 80% methane, 7% Ethane, 6% Propane, 2.5% Butane, 1.5% Isobutane, and 3% Pentane. Used in UB Drilling where it is available from local pipelines or other sources at reasonable cost. Has advantage of eliminating downhole corrosion and combustion problems, but surface handling presents safety issues during connections and tripping.
Natural gas
“Natural gas” means all kinds of gaseous hydrocarbons, whether wet or dry, produced from oil or gas wells; and also includes the residue gas remaining after the extraction of liquid hydrocarbons or by-products from wet gas. Source: Law of Information Energy, Petroleum Act B.E. 2514 (1971), Thailand, as of June 2013. LegislationNatural gas
A highly compressible, highly expandable mixture of hydrocarbons which occurs naturally in a gaseous form and passes a meter in vapor phase. Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsNatural gas
A highly compressible, highly expandable mixture of hydrocarbons which occurs naturally in a gaseous form and passes a meter in vapor phase. Source: The Oil Industry (Development) Act, 1974, Act No. 47 of 1974, India, as amended as of May 2013. LegislationNatural Gas
“Natural gas” means gas obtained from bore-holes and consisting primarily of hydrocarbons. Source: The Petroleum and Natural Gas Rules, 1959 (As amended from time to time), India, as amended as of May 2013. RegulationsNatural Gas
“Natural gas” means gas obtained from bore- holes and consisting primarily of hydrocarbons and includes-- gas in liquid state, namely, liquefied natural gas and regasified liquefied natural gas,
- compressed natural gas,
- gas imported through transnational pipe lines, including CNG or liquefied natural gas,
- gas recovered from gas hydrates as natural gas, (v) methane obtained from coal seams, namely, coal bed methane, but does not include helium occurring in association with such hydrocarbons.