Filtrate

Filtrate

Definition(s)

Filtrate

Liquid that is forced out of a cement slurry during a fluid loss test. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards Source: API SPEC 10A, Specification for Cements and Materials for Well Cementing, Twenty-fourth Edition, December 2010. Global Standards  
Equivalent Sack

Equivalent Sack

Definition(s)

Equivalent Sack

Mass of the blend of Portland cement and fly ash or pozzolan that has the same absolute volume as 42,63 kg (94 lbs) of Portland cement. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  
Continuous-Pumping Squeeze-Cementing Operation

Continuous-Pumping Squeeze-Cementing Operation

Definition(s)

Continuous-Pumping Squeeze-Cementing Operation

Squeeze-cementing operation that does not involve cessation of pumping. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  
Consistometer

Consistometer

Definition(s)

Consistometer

Device used to measure the thickening time of a cement slurry under specified temperature and pressure. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  

Consistometer

Device used to measure the thickening time of a cement slurry under temperature and under pressure. Source: API SPEC 10A, Specification for Cements and Materials for Well Cementing, Twenty-fourth Edition, December 2010. Global Standards  
Compressive Strength

Compressive Strength

Definition(s)

Compressive Strength

Strength of a set cement sample measured by the force required to crush it. NOTE It is expressed as force per unit area. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  

Compressive Strength

Force per unit area required to cause a set cement sample to fail under compression. Source: API SPEC 10A, Specification for Cements and Materials for Well Cementing, Twenty-fourth Edition, December 2010. Global Standards  
Compatibility

Compatibility

Definition(s)

Compatibility

Capacity to form a fluid mixture that does not undergo undesirable chemical and/or physical reactions. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  
Clinker

Clinker

Definition(s)

Clinker

Fused materials from the kiln in cement manufacturing that are interground with calcium sulfate to make cement. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  

Clinker

Fused materials produced in the kiln during cement manufacturing that are interground with calcium sulfate to make cement. Source: API SPEC 10A, Specification for Cements and Materials for Well Cementing, Twenty-fourth Edition, December 2010. Global Standards  
Cement Blend

Cement Blend

Definition(s)

Cement Blend

Mixture of dry cement and other dry materials. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards Source: API SPEC 10A, Specification for Cements and Materials for Well Cementing, Twenty-fourth Edition, December 2010. Global Standards  
Cement Grade

Cement Grade

Definition(s)

Cement Grade

Designation achieved using the ISO system for denoting the sulfate resistance of a particular cement. NOTE See ISO 10426-1 for further information. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  

Cement Grade

Designation achieved under the ISO system for denoting the sulfate resistance of a particular cement. Source: API SPEC 10A, Specification for Cements and Materials for Well Cementing, Twenty-fourth Edition, December 2010. Global Standards  
Cement Class (or Cement Type)

Cement Class (or Cement Type)

Definition(s)

Cement Class (or Cement Type)

Designation achieved using the ISO system of classifications of well cement in accordance with its intended use. NOTE See ISO 10426-1 for further information. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  
Casing Cementing

Casing Cementing

Definition(s)

Casing Cementing

Complete or partial annular cementing of a full casing string. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  
Bulk Density

Bulk Density

Definition(s)

Bulk Density

Mass per unit volume of a dry material containing entrained air. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  
Batch Mixing

Batch Mixing

Definition(s)

Batch Mixing

Process of mixing and holding a volume of cement slurry prior to placement in the wellbore. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  
Assumed Surface Temperature

Assumed Surface Temperature

Definition(s)

Assumed Surface Temperature (TAS)

Assumed temperature at surface used for calculating a pseudo-temperature gradient. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards  
Additive

Additive

Definition(s)

Additive

Any chemical substance or combination of substances, including a proppant, contained in a hydraulic fracturing fluid that is intentionally added to a base fluid for a specific purpose whether or not the purpose of any such substance or combination of substances is to create fractures in a formation. Source: Oil and Gas Division, Texas Administrative Code, Title 16, Chapter 3, February 2013. Regulations  

Additive

Material added to a cement slurry to modify or enhance some desired property.
  • NOTE: Properties that are commonly modified include setting time (by use of retarders or accelerators), fluid loss, viscosity, etc.
Source: API SPEC 10A, Specification for Cements and Materials for Well Cementing, Twenty-fourth Edition, December 2010. Global Standards

Additive

Material added to a cement slurry to modify or enhance some desired property.
  • NOTE: Common properties that are modified include: setting time (by use of retarders or accelerators), fluid loss control, viscosity, etc.
Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards
Absolute Volume

Absolute Volume

Definition(s)

Absolute Volume

Reciprocal of absolute density. NOTE It is expressed as volume per unit mass. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards
Water-Wetting Capability

Water-Wetting Capability

Definition(s)

Water-Wetting Capability

Capability of a fluid to alter the quality or state of being water-wetted. NOTE A fully water-wet state is considered most desirable to provide cement bonding. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards
Rate of Penetration (ROP)

Rate of Penetration (ROP)

Definition(s)

Rate of Penetration (ROP)

Common term for drilling rate; usually expressed in units of ft/hour or m/hour. Source: API STD 65 – Part 2, Isolating Potential Flow Zones During Well Construction, Upstream Segment, Second Edition, December 2010. Global Standards  
PWD

PWD

Definition(s)

PWD

Pressure while drilling. Source: API STD 65 – Part 2, Isolating Potential Flow Zones During Well Construction, Upstream Segment, Second Edition, December 2010. Global Standards  
Pressure While Drilling (PWD)

Pressure While Drilling (PWD)

Definition(s)

Pressure While Drilling (PWD)

The measurement of downhole pressure while drilling by a tool installed in the BHA. Source: API STD 65 – Part 2, Isolating Potential Flow Zones During Well Construction, Upstream Segment, Second Edition, December 2010. Global Standards  
RT

RT

Definition(s)

RT

Radiographic examination (method) or radiography. 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

RT

Radiographic 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
PSL

PSL

Definition(s)

PSL

Categories of design requirements based on the application.

Source: API Standard 2CCU, Offshore Cargo Carrying Units, First Edition, August 2017. Global Standards

PSL

Product specification level. Source: API Standard 2CCU, Offshore Cargo Carrying Units, First Edition, August 2017. Global Standards 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 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 Source: API SPEC 5CT, Specification for Casing and Tubing, Upstream Segment, Ninth Edition, July 2011 (Errata September 2012). Global Standards Source: API SPEC 5DP, Specification for Drill Pipe, First Edition, August 2009. Global Standards Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards Source: API SPEC 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, April 2012. Global Standards Source: API SPEC 17D, Design and Operation of Subsea Production Systems—Subsea Wellhead and Tree Equipment, Upstream Segment, Second Edition May 2011 (Errata September 2011). Global Standards Source: API SPEC 17J, Specification for Unbonded Flexible Pipe, Third Edition, July 2008. Global Standards
Testing

Testing

Definition(s)

Testing

Procedures used to determine pressure tightness, material hardness, strength, and notch toughness.
  • EXAMPLE: Example: Pressure testing, whether performed hydrostatically, pneumatically, or a combination of hydrostatic/pneumatic or mechanical testing.
  • NOTE: Testing does not refer to NDE using techniques such as PT, MT, etc.
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

Testing

Within this document, testing generally refers to either pressure testing, whether performed hydrostatically, pneumatically, or a combination hydrostatic/pneumatic, or mechanical testing to determine such data as material hardness, strength, and notch toughness. Testing, however, does not refer to NDE using techniques such as liquid penetrant examination (PT), magnetic particle examination (MT), ultrasonic examination (UT), radiographic examination (RT), etc.

Source: API 510, Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration, Tenth Edition, May 2014, with Addendum May 2017. Global Standards

Testing

Action carried out on a piece of equipment to ensure that it can perform a required function. 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  

Testing

Within this document, testing generally refers to either pressure testing whether performed hydrostatically, pneumatically or a combination hydrostatic/pneumatic, or mechanical testing to determine such data as material hardness, strength and notch toughness. Testing, however, does not refer to NDE using techniques such as PT, MT, etc. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards
Special Process

Special Process

Definition(s)

Special Process

Operation that can change or affect the mechanical properties, including toughness, of the materials used in equipment. 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  

Special Process

Operation that may change or affect the mechanical properties, including toughness, of the materials used in the equipment. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global Standards  

Special Process

An operation that can change or affect the mechanical properties, including toughness, of the materials used in the equipment. Source: API SPEC 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, April 2012. Global Standards  

Special Process

Operation which converts or affects material properties. Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards  

Special Process

A process where some aspects of the required quality cannot be assured by subsequent inspection of the processed material alone. Manufacturing special processes include welding, forming and the application of protective treatments. Inspection and testing processes classified as special processes include non-destructive examination and pressure and leak testing. Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 4, Steel Unit Structures, June 2013, Lloyd’s Register, Global Standards
Serviceability

Serviceability

Definition(s)

Serviceability

Condition of a piece of equipment at any point in time that affects the ability of the equipment to perform its function(s) as intended. 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  

Serviceability

Ability of a structure or structural component to perform adequately for normal functional use. 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
Primary-Load-Carrying Component

Primary-Load-Carrying Component

Definition(s)

Primary-Load-Carrying Component

Component of the equipment through which the primary load is carried. 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 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global Standards Source: API SPEC 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, April 2012. Global Standards
Primary Load

Primary Load

Definition(s)

Primary Load

Axial load to which the equipment is subjected in operation. 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  

Primary Load

Load which is independent of structural deformation in the riser and induces an internal force that is necessary to satisfy the laws of static equilibrium. NOTE The internal force acts as long as the load is applied, and does not diminish when yielding occurs. EXAMPLE Internal pressure, external hydrostatic pressure, self-weight, contents and buoyancy of the riser. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards  

Primary Load

Load that arises within the equipment when the equipment is performing its primary design function. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global Standards  

Primary Load

Axial load that equipment is subjected to in operations. Source: API SPEC 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, April 2012. Global Standards
Load Test

Load Test

Definition(s)

Load Test

Test wherein a load is applied under controlled and monitored conditions to verify the serviceability of equipment. 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  
Expendable Parts

Expendable Parts

Definition(s)

Expendable Parts

Parts normally used up or consumed in service. EXAMPLES Seals, gaskets, filters, packing, V-belts, covers, guards, breathers, drains and miscellaneous hardware and fasteners. 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    
μW

μW

Definition(s)

μW

Microwatts. Source: API RP 7G-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition, August 2009. Global Standards