Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Qualified Part
Definition(s)
Qualified Part
Part manufactured under a recognized quality assurance programme and, in the case of replacement, produced to meet or exceed the performance of the original part produced by the original equipment manufacturer (OEM). NOTE ISO 9001 is an example of a recognized quality assurance programme. [ISO 10417]. Source: API SPEC 14A, Specification for Subsurface Safety Valve Equipment, Eleventh Edition, October 2005 (Reaffirmed June 2012). Global StandardsProof Test
Definition(s)
Proof Test
A test performed on a lifting set to a specific multiple of the rated load.
Source: API Standard 2CCU, Offshore Cargo Carrying Units, First Edition, August 2017. Global StandardsProof Test
A test performed on a CCU in which the unit’s pad eyes and primary structure is subjected to a specific load.
Source: API Standard 2CCU, Offshore Cargo Carrying Units, First Edition, August 2017. Global StandardsProof Test
Test specified by the manufacturer which is performed to verify that the SSSV meets those requirements of the technical specification which are relevant to the validation testing performance. Source: API SPEC 14A, Specification for Subsurface Safety Valve Equipment, Eleventh Edition, October 2005 (Reaffirmed June 2012). Global StandardsProfile
Definition(s)
Profile
Feature that is designed for the reception of a locking mechanism. Source: API SPEC 14A, Specification for Subsurface Safety Valve Equipment, Eleventh Edition, October 2005 (Reaffirmed June 2012). Global StandardsMass Loss Corrosion
Definition(s)
Mass Loss Corrosion
weight loss corrosion (deprecated term) loss of metal in areas exposed to fluids which contain water or brine and carbon dioxide (CO2), oxygen (O2) or other corrosive agents NOTE The term “weight” is commonly incorrectly used to mean mass, but this practice is deprecated. Source: API SPEC 14A, Specification for Subsurface Safety Valve Equipment, Eleventh Edition, October 2005 (Reaffirmed June 2012). Global StandardsInterchangeable
Definition(s)
Interchangeable
Specified, timed sequence of controlled heating and cooling of materials for the purpose of changing physical or mechanical properties. Source: API SPEC 14A, Specification for Subsurface Safety Valve Equipment, Eleventh Edition, October 2005 (Reaffirmed June 2012). Global StandardsFunctional Test
Definition(s)
Functional Test
Test process performed to confirm proper operation of a tool.
Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global StandardsFunctional Test
Test performed to confirm proper operation of equipment. Source: API SPEC 14A, Specification for Subsurface Safety Valve Equipment, Eleventh Edition, October 2005 (Reaffirmed June 2012). Global StandardsBean Or Orifice
Definition(s)
Bean Or Orifice
Designed restriction causing the pressure drop in velocity-type SSCSVs. Source: API SPEC 14A, Specification for Subsurface Safety Valve Equipment, Eleventh Edition, October 2005 (Reaffirmed June 2012). Global StandardsNBS
Definition(s)
NBS
National Bureau of Standards. Source: API SPEC 13A, Specification for Drilling Fluids Materials, Eighteenth Edition, February 2010. Global StandardsOCMA
Definition(s)
OCMA
Oil Companies' Materials Association. Source: API SPEC 13A, Specification for Drilling Fluids Materials, Eighteenth Edition, February 2010. Global StandardsCMC-LVT
Definition(s)
CMC-LVT
Carboxymethylcellulose — Low-viscosity, technical-grade. Source: API SPEC 13A, Specification for Drilling Fluids Materials, Eighteenth Edition, February 2010. Global StandardsCMC-HVT
Definition(s)
CMC-HVT
Carboxymethylcellulose — High-viscosity, technical-grade. Source: API SPEC 13A, Specification for Drilling Fluids Materials, Eighteenth Edition, February 2010. Global StandardsEDTA
Definition(s)
EDTA
Ethylenediaminetetraacetic acid. Source: API SPEC 13A, Specification for Drilling Fluids Materials, Eighteenth Edition, February 2010. Global StandardsAPME
Definition(s)
APME
Association of Plastic Manufacturers in Europe. Source: API SPEC 13A, Specification for Drilling Fluids Materials, Eighteenth Edition, February 2010. Global StandardsACS
Definition(s)
ACS
American Chemical Society. Source: API SPEC 13A, Specification for Drilling Fluids Materials, Eighteenth Edition, February 2010. Global StandardsACS
Anti-collision (zone management) system. Source: NORSOK D-001, Drilling facilities, Rev. 3, December 2012. Global StandardsFlash Side
Definition(s)
Flash Side
Side containing residue (“flash”) from stamping, or the side with concave indentation. Source: API SPEC 13A, Specification for Drilling Fluids Materials, Eighteenth Edition, February 2010. Global StandardsMTR
Definition(s)
MTR
Material test report. Source: API Standard 2CCU, Offshore Cargo Carrying Units, First Edition, August 2017. Global Standards Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global Standards Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsMTR
Material test report (mill test report). Source: API 570, Piping Inspection Code: In-service Inspection, Rating, Repair, and Alteration of Piping Systems, Fourth Edition, February 2016, with Addendum May 2017. Global StandardsCOC
Definition(s)
COC
Document in which the manufacturer certifies that the assembly or part is in conformance to the mentioned standard(s), specifications, and guidelines in accordance with the original product definition. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global StandardsCOC
Certificate of Conformance. Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards Source: API Standard 2CCU, Offshore Cargo Carrying Units, First Edition, August 2017. Global Standards Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global StandardsCOC
Certificate of compliance (or conformance). Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global StandardsCOC
Certificate of compliance. Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsCOC
Certificate of competency. Source: IMO Resolution A.1079(28), Recommendations for the Training and Certification of Personnel on Mobile Offshore Units (MOUs), Adopted on 4 December 2013, International Maritime Organization, Regulatory GuidanceType 2 Component 〈Weld〉
Definition(s)
Type 2 Component 〈Weld〉
Component that does not meet the criteria of a type 1 component (3.41). Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsType 1 Component 〈Weld〉
Definition(s)
Type 1 Component 〈Weld〉
Component that isolates pressure and/or may be loaded in tension as the result of axial loads on the packer or bridge plug during run-in, setting, in situ, or retrieval. Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsTemperature Range
Definition(s)
Temperature Range
Specified range of temperature over which the product is designed to operate. Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsTemperature-Cycle Range
Definition(s)
Temperature-Cycle Range
Specified range of temperature fluctuation over which the product is designed to operate. NOTE The temperature-cycle range is applicable anywhere within the product’s temperature range. Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsSubstantive Design Change
Definition(s)
Substantive Design Change
Change to the design, identified by the supplier/manufacturer, that affects the performance of the product in the intended service condition. Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsStandard Service
Definition(s)
Standard Service
Packer (3.26) or bridge plug (3.2) whose components might or might not be manufactured from materials that comply with ISO 15156 (all parts). Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsShear Device
Definition(s)
Shear Device
Component designed to part under a predetermined load.
Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global StandardsShear Device
Component designed to disconnect under a predetermined load. Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsRetrievable Packer or Retrievable Bridge Plug
Definition(s)
Retrievable Packer or Retrievable Bridge Plug
Bridge plug (3.2) or packer (3.26) that has a design feature facilitating its removal from the conduit substantially intact. Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsRepositionable Packer or Repositionable Bridge Plug
Definition(s)
Repositionable Packer or Repositionable Bridge Plug
Bridge plug (3.2) or packer (3.26) that meets the definition of retrievable packer (retrievable bridge plug) (3.33) and has a design feature facilitating its relocation inside the conduit (without removal) while reestablishing its intended function. Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsPressure Reversal
Definition(s)
Pressure Reversal
Change from predominant pressure in the annulus to predominant pressure in the work string bore or vice versa.
Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global Standards