Non-Condensable Gas

Non-Condensable Gas

Definition(s)

Non-Condensable Gas

Gas or vapour that remains in the gaseous state at the temperature and pressure expected. Sources: API STD 521, Pressure-relieving and Depressuring Systems, Fifth Edition, January 2007 (Addendum May 2008). Global Standards 
IJ

IJ

Definition(s)

IJ

Integral joint tubing connection. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  

IJ

API Spec 5B integral tubing connection. Source: API SPEC 5CT, Specification for Casing and Tubing, Upstream Segment, Ninth Edition, July 2011 (Errata September 2012). Global Standards  
FLVI

FLVI

Definition(s)

FLVI

Full-length visual inspection. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  
FLMPI

FLMPI

Definition(s)

FLMPI

Full length magnetic particle inspection (wet or dry MPI). Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  
Maximum Allowable Working Pressure (MAWP)

Maximum Allowable Working Pressure (MAWP)

Definition(s)

Maximum Allowable Working Pressure

The maximum internal pressure permitted in the piping system for continued operation at the most severe condition of coincident internal or external pressure and temperature (minimum or maximum) expected during service. It is the same as the design pressure, as defined in ASME B31.3 and other code sections, and is subject to the same rules relating to allowances for variations of pressure or temperature or both. If the piping system is being rerated, the new MAWP shall be the rerated MAWP.

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 Standards

Maximum Allowable Working Pressure (MAWP)

Maximum gauge pressure permissible at the top of a completed vessel in its normal operating position at the designated coincident temperature specified for that pressure. cf. design pressure (3.23). NOTE The MAWP is the least of the values for the internal or external pressure as determined by the vessel design rules for each element of the vessel using actual nominal thickness, exclusive of additional metal thickness allowed for corrosion and loadings other than pressure. The MAWP is the basis for the pressure setting of the pressure-relief devices that protect the vessel. Source: API STD 521, Pressure-relieving and Depressuring Systems, Fifth Edition, January 2007 (Addendum May 2008). Global Standards 
FLEMI

FLEMI

Definition(s)

FLEMI

Full-length electromagnetic inspection. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  
FLD

FLD

Definition(s)

FLD

Full-length drifted. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  
EW

EW

Definition(s)

EW

Electric-welded casing or tubing (including attached couplings). Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  

EW

Electric-welded process. Source: API SPEC 5CT, Specification for Casing and Tubing, Upstream Segment, Ninth Edition, July 2011 (Errata September 2012). Global Standards  
EU

EU

Definition(s)

EU

External upset tubing connection. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  

EU

API Spec 5B external upset tubing connection. Source: API SPEC 5CT, Specification for Casing and Tubing, Upstream Segment, Ninth Edition, July 2011 (Errata September 2012). Global Standards  

EU

External upset. Source: API SPEC 5DP, Specification for Drill Pipe, First Edition, August 2009. Global Standards  

EU

European Union. 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 Guidelines  

Eu

Young’s modulus of clay in undrained condition.

Source: ABS Guidance Notes on Geotechnical Performance of Spudcan Foundations, January 2017. Global Standards
EBW

EBW

Definition(s)

EBW

Effective beam width. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards Source: API RP 7G-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition, August 2009. Global Standards  

EBW

Exploding Bridgewire Detonator, (see definition above). Source: API RP 67, Recommended Practice for Oilfield Explosives Safety, Upstream Segment, Second Edition, May 2007. Global Standards  
DP

DP

Definition(s)

DP

Design Pressure. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards

DP

Plain end drill pipe. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  

DP

Dynamically positioned. Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards Source: Commercial Diving Projects Offshore, Diving at Work Regulations 1997, Approved Code of Practice (UK HSE L103), First Edition, 1998. Regulatory Guidance Source: Oil & Gas UK, Guidelines on subsea BOP systems, Issue 1, July 2012, Global Standards  

DP

Drillpipe or Dynamic Positioning. Source: Deepwater Well Control Guidelines. IADC Guidelines  

DP

Dynamic positioning. Source: API  Bulletin 97, Well Construction Interface Document Guidelines, First Edition, December 2013. Global Standards 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 Guidelines Source: ISO 19901-7:2013, Petroleum and natural gas industries – Specific requirements for offshore structures – Part 7: Stationkeeping systems for floating offshore structures and mobile offshore units. Global Standards Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards Source: NORSOK D-010, Well integrity in drilling and well operations, Rev. 3, August 2004. Global Standards Source: OGP Report No. 476, Recommendations for enhancements to well control training, examination and certification, International Association of Oil & Gas Producers, October 2012. Global Standards  

DP

Stationkeeping technique consisting primarily of a system of automatically controlled on-board thrusters, which generate appropriate thrust vectors to counter the mean and slowly varying induced actions. Source: ISO 19901-7:2013, Petroleum and natural gas industries – Specific requirements for offshore structures – Part 7: Stationkeeping systems for floating offshore structures and mobile offshore units. Global Standards
DSC Block

DSC Block

Definition(s)

DSC Block

Distance sensitivity calibration block. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  
DC-Block

DC-Block

Definition(s)

DC-Block

Distance calibration block. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  
CPLG

CPLG

Definition(s)

CPLG

Unattached couplings. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  
BC

BC

Definition(s)

BC

Buttress thread casing. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  

BC

API Spec 5B buttress thread casing connection. Source: API SPEC 5CT, Specification for Casing and Tubing, Upstream Segment, Ninth Edition, July 2011 (Errata September 2012). Global Standards  
Marked Burst Pressure or Rated Burst Pressure (Rupture Disk)

Marked Burst Pressure or Rated Burst Pressure (Rupture Disk)

Definition(s)

Marked Burst Pressure or Rated Burst Pressure (Rupture Disk)

Burst pressure, established by tests for the specified temperature and marked on the disk tag by the manufacturer. NOTE The marked burst pressure can be any pressure within the manufacturing design range unless otherwise specified by the customer. The marked burst pressure is applied to all of the rupture disks of the same lot. Source: API STD 521, Pressure-relieving and Depressuring Systems, Fifth Edition, January 2007 (Addendum May 2008). Global Standards 
ALTFLD

ALTFLD

Definition(s)

ALTFLD

Full-length alternate drifted. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  
Yoke

Yoke

Definition(s)

Yoke

U-shaped piece of soft magnetic material, either solid or laminated, around which a coil is wound to carry a magnetizing current. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Wetting Agent

Wetting Agent

Definition(s)

Wetting Agent

Substance which lowers the surface tension of a liquid. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Vernier Calliper

Vernier Calliper

Definition(s)

Vernier Calliper (or Dial Calliper)

Measuring device, usually with two legs or jaws, that can be adjusted to measure the thickness, diameter, and distance between surfaces. NOTE Vernier callipers have a vernier scale readout whereas dial callipers have a dial readout. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Vanish Point

Vanish Point

Definition(s)

Vanish Point

Location where the external thread runs out or terminates on the OCTG outside surface. NOTE The vanish point is the point where the lead of the chaser tool makes its final cut. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Upset

Upset

Definition(s)

Upset (Noun)

Forged metal end of OCTG with increased wall thickness and diameter, later to be threaded or welded. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  

Upset

A pipe end with increased wall thickness. The outside diameter may be increased, or the inside diameter may be reduced, or both. Upsets are usually formed by hot forging the pipe end. Source: API RP 7G, Recommended Practice for Drill Stem Design and Operating Limits, Upstream Segment, Sixteenth Edition, August 1998 (Addendum 2: September 2009). Global Standards  

Upset

Forged end of a drill pipe tube used to increase wall thickness. Source: API RP 7G-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition, August 2009. Global Standards
Ultrasonic Velocity

Ultrasonic Velocity

Definition(s)

Ultrasonic Velocity

Speed at which ultrasonic sound waves travel through a medium. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Ultrasonic

Ultrasonic

Definition(s)

Ultrasonic

Having a frequency above the audible range, i.e. above 20 kHz. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Ultrasonic Test

Ultrasonic Test

Definition(s)

Ultrasonic Test

NDT method using high-frequency sound waves. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Transverse

Transverse

Definition(s)

Transverse

Across, usually circumferential or substantially circumferential in direction. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Transducer

Transducer

Definition(s)

Transducer

Device which converts one form of energy to another. EXAMPLES Ultrasonic probes, search coils, eddy-current probes and most other detectors. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  

Transducer

See sensor. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Tolerance

Tolerance

Definition(s)

Tolerance

Permissible deviation from the specified value. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  

Tolerance

The amount of variation permitted. Source: API RP 7G, Recommended Practice for Drill Stem Design and Operating Limits, Upstream Segment, Sixteenth Edition, August 1998 (Addendum 2: September 2009). Global Standards Source: API RP 7G-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition, August 2009. Global Standards  

Tolerance

Amount of variation permitted. Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global Standards  

Tolerance

The amount of skim hydrocarbons that may be recovered before the produced water disposal system operator must allocate to the producing property. Source: Oil and Gas Division, Texas Administrative Code, Title 16, Chapter 3, February 2013. Regulations
Threshold

Threshold

Definition(s)

Threshold

Investigation level established during EMI or UT inspection, above which indications are further investigated. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Thread Protector

Thread Protector

Definition(s)

Thread Protector

Protection device placed on the end of OCTG to protect threads and seals from damage. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards  

Thread Protector

Cap or insert used to protect threads and seals during handling, transportation and storage. Source: API SPEC 5CT, Specification for Casing and Tubing, Upstream Segment, Ninth Edition, July 2011 (Errata September 2012). Global Standards Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards