M/B

M/B

Definition(s)

M/B

Make-up/break-out. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
LP

LP

Definition(s)

LP

Liquid Penetrant. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards Source: API SPEC 16RCD, Specification for Drill Through Equipment—Rotating Control Devices, Upstream Segment, First Edition, February 2005. Global Standards

LP

Load point. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  

LP

Low pressure. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards Source: Deepwater Well Control Guidelines. IADC Guidelines
LL

LL

Definition(s)

LL

Limit load. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
Lb

Lb

Definition(s)

Lb

Pound mass. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
ksi

ksi

Definition(s)

ksi

1000 lbs force per square inch. Source: API Technical Report 17TR7, Verification and Validation of Subsea Connectors, First Edition, April 2017. Global Standards

ksi

1 000 lbf (pound-force) per square inch. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  

KSI.

1000 pounds per square inch stress. Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards  
kips

kips

Definition(s)

kips

1000 lbs force. Source: API Technical Report 17TR7, Verification and Validation of Subsea Connectors, First Edition, April 2017. Global Standards

kips

1000 lbf (pound-force). Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  

kips

Unit of Measure:- 1,000 lb. Source: Deepwater Well Control Guidelines. IADC Guidelines
FMU

FMU

Definition(s)

FMU

Final make-up specimen condition. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
EUE

EUE

Definition(s)

EUE

External upset end. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (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  
CEYP

CEYP

Definition(s)

CEYP

Capped end yield pressure. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
CEPL

CEPL

Definition(s)

CEPL

Capped end pressure load (tension). Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
CW

CW

Definition(s)

CW

Clockwise direction. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  

CW

Clockwise. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards  
ACP

ACP

Definition(s)

ACP

Access Control Point.

Source: API RP 781 Security Plan Methodology for the Oil and Natural Gas Industries.1st Ed. September 2016. Global Standards

ACP

Annular casing pressure. Source: API STD 65 – Part 2, Isolating Potential Flow Zones During Well Construction, Upstream Segment, Second Edition, December 2010. Global Standards 
CCW

CCW

Definition(s)

CCW

Counter-clockwise direction. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
CCS

CCS

Definition(s)

CCS

Critical cross-section. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
Thread Seal

Thread Seal

Definition(s)

Thread Seal

Seal or sealing system, which relies on intimate fitting of the thread-form and usually entrapment of the thread compound within the thread-form to achieve a seal CAL Connection application level for which the successfully tested pipe [size, mass (label: weight), grade] and connections are intended to be used. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards
Thread Lot

Thread Lot

Definition(s)

Thread Lot

All products manufactured on a given machine during a continuous production cycle that is not interrupted by a catastrophic tool failure or injurious machine malfunction (excluding worn tools or minor tool breakage), tool holder change (except rough boring bar) or any other malfunction of either threading equipment or inspection gauges. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards
Test Load Envelope

Test Load Envelope

Definition(s)

Test Load Envelope

Extremes of loads (axial load, pressure, bending) and temperature within which the connection will perform cyclically. NOTE The manufacturer has the primary responsibility for defining the test load envelope for their connection products (see 4.1). Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards
Specimen

Specimen

Definition(s)

Specimen

Connection between two pieces of pipe. NOTE The specimen can be composed of one coupling and two pins for coupled connections, or one pin and one box for integral connections. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards
Single Seal

Single Seal

Definition(s)

Single Seal

One barrier or multiple barriers that cannot be physically differentiated in their function. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards
Seal Ovality

Seal Ovality

Definition(s)

Seal Ovality

Maximum seal diameter minus the minimum seal diameter divided by the average seal diameter multiplied by 100. NOTE Seal ovality is expressed as a percentage. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards
Resilient Seal

Resilient Seal

Definition(s)

Resilient Seal

Seal or sealing system, which relies on entrapment of a seal ring within a section of the connection (e.g. in the thread-form, on a seal area, etc.) to achieve a seal. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards
Hybrid System

Hybrid System

Definition(s)

Hybrid System

Hybrid systems are those in which the rate of temperature rise due to an unwanted reaction can be tempered by liquid boiling at system pressure, but can also give rise to the generation of non-condensable gas. Source: API STD 521, Pressure-relieving and Depressuring Systems, Fifth Edition, January 2007 (Addendum May 2008). Global Standards 
Pup Joint

Pup Joint

Definition(s)

Pup Joint

Riser joint that is shorter than standard length.

Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards

Pup Joint

Short tubular element used to join two threaded connections.

Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global Standards

Pup Joint

Joint of pipe or tubing shorter than standard length. Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards

Pup Joint

Short pipe length usually with threaded ends. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  

Pup Joint

A shorter than standard length riser joint. Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards  

Pup Joint

Joint of pipe or tubing shorter than standard length. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards  

Pup Joint

Casing or tubing shorter than range 1. Source: API SPEC 5CRA, Specification for Corrosion Resistant Alloy Seamless Tubes for Use as Casing, Tubing and Coupling Stock, Upstream Segment, First Edition, February 2010 (Errata August 2011). Global Standards  

Pup Joint

Casing or tubing of length shorter than Range 1, see Table C.27 or Table E.27. Source: API SPEC 5CT, Specification for Casing and Tubing, Upstream Segment, Ninth Edition, July 2011 (Errata September 2012). Global Standards  

Pup Joint

Shorter than standard length riser joint. 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
Pipe String

Pipe String

Definition(s)

Pipe String

Pipe body and the connection. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
Multiple Seals

Multiple Seals

Definition(s)

Multiple Seals

Sealing system, which consists of more than one independent barrier, and of which each barrier forms a seal itself. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
Mother Joint

Mother Joint

Definition(s)

Mother Joint

Length of pipe or coupling stock from which short lengths are cut for machining connection test specimens. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
Metal-to-Metal Seal

Metal-to-Metal Seal

Definition(s)

Metal-to-Metal Seal

Seal or sealing system that relies on intimate and usually high contact stress of mating metal surfaces to achieve a seal. NOTE The thread compound can affect, both beneficially and detrimentally, the performance of a metal seal. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
Lot

Lot

Definition(s)

LOT

Application of pressure by superimposing a surface pressure on a fluid column in order to determine the pressure at which the exposed formation accepts whole fluid [SOURCE: API RP 59, modified]. Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards

Lot

Lengths of pipe with the same specified dimensions and grade from the same heat of steel which are heat-treated as part of a continuous operation (or batch). Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  

LOT

Leak-off test. Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards Source: API  Bulletin 97, Well Construction Interface Document Guidelines, First Edition, December 2013. Global Standards Source: API RP 96, Deepwater Well Design and Construction, First Edition, March 2013. Global Standards Source: Deepwater Well Control Guidelines. IADC Guidelines  

Lot

Definite quantity of product manufactured under conditions that are considered uniform for the attribute being inspected. Source: API SPEC 5DP, Specification for Drill Pipe, First Edition, August 2009. Global Standards  

Lot

Pieces of steel, with the same nominal dimensions and from a single heat, which are subsequently heattreated as part of the same continuous operation (or batch). Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global Standards  

Lot

One lot is defined as all material from the same heat processed at one time. Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global Standards
Limit Load

Limit Load

Definition(s)

Limit Load

Load combination extreme (axial load and/or pressure) which defines the failure conditions for the connection or maximum load resulting in large permanent deformation (such as buckling) prior to catastrophic failure. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards  
Leak

Leak

Definition(s)

Leak

Unintended and undesired movement of fluids. Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards

Leak

Any positive displacement of fluid in the measuring system during hold periods. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards