Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
PT
Definition(s)
PT
Liquid-penetrant technique. 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 StandardsPT
Penetrant Test. 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 StandardsPT
Liquid penetrant examination technique. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global StandardsPT
Liquid penetrant inspection. Source: API RP 7G-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition, August 2009. Global StandardsPT
Liquid penetrant testing. Source: API RP 8B, Recommended Practice for Procedures for Inspections, Maintenance, Repair and Remanufacture of Hoisting Equipment, Seventh Edition, March 2002 (Reaffirmed: August 2012). Global Standards Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global StandardsPTFE
Definition(s)
PTFE
Polytetrafluoroethylene. Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards 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 SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global Standards Source: ISO 21457:2010, Petroleum and natural gas industries — Materials selection and corrosion control for oil and gas production systems, First Edition,September 2010. Global StandardsPTL
Definition(s)
PTL
Perfect thread length. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global StandardsPTW
Definition(s)
PTW
Permit to Work. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards Source: NOPSEMA Guidance note: Safety Case Lifecycle Management, N04300-GN0087, Australia, Revision 5, December 2012. Regulatory Guidance Source: NOPSEMA Guidance Note: Control Measures and Performance Standards, N-04300 GN0271, Australia, Revision 3, December 2011. Regulatory Guidance Source: NOPSEMA Guidance Note: Noise Management—Principles of Assessment and Control, N-09000-GN0401, Australia, Revision 3, December 2011. Regulatory Guidance Source: NOPSEMA Guidance Note: Safety Management Systems, N04300-GN1052, Australia, Revision 0, December 2012. Regulatory Guidance 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: OGP Report No. 456, Process Safety – Recommended Practice on Key Performance Indicators, International Association of Oil & Gas Producers, November 2011. Global StandardsPU
Definition(s)
PU
Polyurethane. Source: API RP 17B, Recommended Practice for Flexible Pipe, Fourth Edition, July 2008. Global Standards Source: Rules for Classification and Construction, IV Industrial Services, 6 Offshore Technology, 9 Guideline for Personnel Transfers by Means of Lifting Appliances, Edition 2011, Germanischer Lloyd SE, Global StandardsPublic Key
Definition(s)
Public Key
A cryptographic key that may be widely published and is used to enable the operation of an asymmetric (public key) cryptographic algorithm. Extended Definition: The public part of an asymmetric key pair that is uniquely associated with an entity and that may be made public. Adapted from: CNSSI 4009, NIST SP 800-63 Rev 1, FIPS 201-2, FIPS 140-2, Federal Bridge Certificate Authority Certification Policy 2.25. Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies (https://niccs.us-cert.gov/glossary) as of 11 November 2015, Global StandardsPublic Key Cryptography
Definition(s)
Public Key Cryptography
A branch of cryptography in which a cryptographic system or algorithms use two uniquely linked keys: a public key and a private key (a key pair). Adapted from: CNSSI 4009, FIPS 140-2, InCommon Glossary. Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies (https://niccs.us-cert.gov/glossary) as of 11 November 2015, Global StandardsPublic Key Encryption
Definition(s)
Public Key Encryption
A branch of cryptography in which a cryptographic system or algorithms use two uniquely linked keys: a public key and a private key (a key pair). Adapted from: CNSSI 4009, FIPS 140-2, InCommon Glossary. Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies (https://niccs.us-cert.gov/glossary) as of 11 November 2015, Global StandardsPublic Key Infrastructure
Definition(s)
Public Key Infrastructure
A framework consisting of standards and services to enable secure, encrypted communication and authentication over potentially insecure networks such as the Internet. Extended Definition: A framework and services for generating, producing, distributing, controlling, accounting for, and revoking (destroying) public key certificates. Adapted from: CNSSI 4009, IETF RFC 2828, Federal Bridge Certificate Authority Cross-certification Methodology 3.0, InCommon Glossary, Kantara Identity Assurance Framework 1100, NIST SP 800-63 Rev 1. Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies (https://niccs.us-cert.gov/glossary) as of 11 November 2015, Global StandardsPull Test
Definition(s)
Pull Test
A load that is applied to the crane structure that will not exceed 100 % of the crane’s onboard rated capacity as identified on the crane’s load chart. NOTE This is not a load test as described in 4.7.2 and Annex D. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global StandardsPull Test
A “pull test” is defined as a load that is applied to the crane structure that will not exceed 100% of the crane’s onboard rated capacity as identified on the crane’s load chart. THIS IS NOT A LOAD TEST AS DESCRIBED IN 3.5.3 AND APPENDIX E. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global StandardsPull-in Head
Definition(s)
Pull-in head
End of pipeline acting as attachment point for the pull-in wire. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global StandardsPull-in head
Device used for terminating the end of a flowline or umbilical so that it can be loaded/offloaded from a vessel and pulled along the seabed and/or through an I-tube or J-tube. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global StandardsPull-in head
Device used during flexible pipe installation to connect the flexible pipe end fitting to a pull-in wire, consisting of structure that connects to end-fitting and a connection that interfaces with lifting equipment. Source: API RP 17L2, Recommended Practice for Flexible Pipe Ancillary Equipment, First Edition, March 2013. Global StandardsPull-in heads
Pull-in heads typically consist of a flanged structure that bolts directly onto the flexible pipe end fitting, as shown in Figure 37. A pad-eye is usually welded to the other end and is used to connect to a pull-in wire. Some pull-in heads may incorporate vents to facilitate pressure testing. They are generally a nonstandard item, since they need to be dimensionally compatible with the particular end fitting being used. Thus, they are seldom re-used. Source: API RP 17L2, Recommended Practice for Flexible Pipe Ancillary Equipment, First Edition, March 2013. Global StandardsPull-in Method
Definition(s)
Pull-in method
This method (see Figure A.25) aligns the flowline or umbilical by pulling it toward its connection point using a wire rope(s) fastened to the flowline end (pull-in head, see 3.1.8). Final alignment and positioning typically requires special tools and/or alignment frames. Temporary buoyancy or flexible jumpers can be used to reduce pull-in forces and moments. In diverless situations, the pull-in is conducted through the use of ROTs. These tools are designed with enough power to pull, lift, bend and rotate the line into its final position at the connection point. The same tool can also assist in locking the flowline or umbilical to the connection point and testing the connection. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global StandardsPulse
Definition(s)
Pulse
Wave of short duration. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global StandardsPulse Duration
Definition(s)
Pulse Duration
Time from initial current flow until the magnetization current has decayed to one-half the peak magnitude. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global StandardsPulser
Definition(s)
Pulser
Electronic device and probe for generating a controlled-magnitude magnetic pulse, used for standardizing transducers. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global StandardsPump Capacity
Definition(s)
Pump Capacity
Flow rate of a pump at a particular head as read off the pump head-capacity curve. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPump Curve
Definition(s)
Pump Curve
Graph that shows the relationship between flow, head, horsepower, efficiency, and NPSHR of a pump. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPump Differential
Definition(s)
Pump Differential
Total pressure output of a pump minus its suction pressure. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPump Differential Head
Definition(s)
Pump Differential Head
Difference in total head between the suction and discharge of the pump. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPump Head
Definition(s)
Pump Head
Amount of the increase in total head across the pump. Also referred to as pump differential head.. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPump Head-capacity Curve
Definition(s)
Pump Head-capacity Curve
Graphical representation of pressure produced by the pump vs. flow rate. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPump Horsepower Capacity Curve
Definition(s)
Pump Horsepower Capacity Curve
Graphical representation of required power versus flow. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPump Run Out
Definition(s)
Pump Run Out
Flow rate that produces little to no head. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPump Station
Definition(s)
Pump Station
One of the installations built at intervals along a liquid line or vessel to route and increase the flow contains pumps and other equipment.
Pump Unit Lockout
Definition(s)
Pump Unit Lockout
Removal from service of a shutdown pump unit. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPump Unit Shutdown
Definition(s)
Pump Unit Shutdown
Temporary loss of a pump unit, indicates exceeded one or more of the pump's operating parameters. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPump-Room
Definition(s)
Pump-Room
Pump-room is a space, located in the cargo area, containing pumps and their accessories for the handling of ballast and oil fuel. Source: Resolution MEPC.119(52), 2004 amendments to the International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (IBC Code), 15 October 2004. Regulatory guidance, International Maritime OrganizationPump-through
Definition(s)
Pump-through
Capability of a device/tool with a closure mechanism to be partially opened by the application of differential pressure in the opposite direction of sealing, thus allowing fluid to be pumped through the tool.
Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global Standards