Secondary Marking

Secondary Marking

Definition(s)


Secondary marking

Secondary marking is defined as the marking used within a major system or location to identify components such as valves, hydraulically operated components, local tapping points used for sensing equipment, probes, etc. A character height of 50 mm (1,969 in) to 150 mm (5,906 in) should be used. Smaller sizes may be used when the specified size is impractical. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards  
SXT

SXT

Definition(s)


SXT

Surface tree. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards  
SUT

SUT

Definition(s)


SUT

Subsea umbilical termination. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards  
SUDU

SUDU

Definition(s)


SUDU

Subsea umbilical distribution unit. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards  
SSP

SSP

Definition(s)


SSP

site safety plan. Source: API RP 98, Personal Protective Equipment Selection for Oil Spill Responders, First Edition, August 2013. Global Standards

SSP

Subsea processing. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards  

SSP

Plan that addresses the specific safety and health hazards of the site and the requirements and procedures for responder protection. NOTE Site safety plan is also referred to as site safety and health plan and should encompass all phases of the operation and be kept on site. Source: API RP 98, Personal Protective Equipment Selection for Oil Spill Responders, First Edition, August 2013. Global Standards
SSIV

SSIV

Definition(s)


SSIV

Subsea isolation valve. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards  

SSIV

Sub-Sea Isolation Valve. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards Source: ISO 13702:2015, Petroleum and natural gas industries — Control and mitigation of fires and explosions on offshore production installations — Requirements and guidelines, Second Edition, August 2015. Global Standards
SITHP

SITHP

Definition(s)


SITHP

Shut-in tubing head pressure. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards  
SIL

SIL

Definition(s)


SIL

Safety integrity level. Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards Source: API STD 521, Pressure-relieving and Depressuring Systems, Sixth Edition, January 2014. Global Standards Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards Source: NORSOK D-002, Well intervention equipment, Rev. 2, June 2013. Global Standards Source: ANSI/ISA–99.00.01–2007, Security for Industrial Automation and Control Systems, Part 1: Terminology, Concepts, and Models, 29 October 2007. National Standard

SIL

Discrete integrity level of a safety instrumented function in a safety instrumented system.
  • NOTE: SILs are categorized in terms of probability of failure; see Annex E.
Source: API STD 521, Pressure-relieving and Depressuring Systems, Sixth Edition, January 2014. Global Standards

SEM

SEM

Definition(s)


SEM

Subsea electronic module. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
SCSSV

SCSSV

Definition(s)


SCSSV

Surface controlled subsurface safety valve. Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards

SCSSV

Surface-controlled sub-surface safety valve. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards Source: API SPEC 14A, Specification for Subsurface Safety Valve Equipment, Eleventh Edition, October 2005 (Reaffirmed June 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 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards Source: IADC UBO / MPD Glossary, December 2011. Global Standards Source: 117 OLF, Norwegian Oil and Gas Association recommended guidelines for Well Integrity, No. 117, Revision No. 4, June 2011. Global Standards
SCM

SCM

Definition(s)


SCM

Subsea control module. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards  

SCM

Satellite control module. Source: API RP 17H, Remotely Operated Vehicle (ROV) Interfaces on Subsea Production Systems, First Edition, July 2004 (Reaffirmed January 2009). Global Standards  

SCM

Screwshaft Condition Monitoring Source: API RP 17H, Remotely Operated Vehicle (ROV) Interfaces on Subsea Production Systems, First Edition, July 2004 (Reaffirmed January 2009). Global Standards
SAS

SAS

Definition(s)


SAS

Safety and automation system. Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards
Spool

Spool

Definition(s)


Spool

Short segment of rigid pipe with a connector half at either end. NOTE A spool is commonly used to connect flowlines and/or subsea facilities together, e.g. a subsea tree to a subsea manifold. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards
Section 9 Vessel

Section 9 Vessel

Definition(s)


Section 9 vessel

A pressure vessel which is exempted from the rules set forth in Section 6 of this document. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards  
Strip Lining

Strip Lining

Definition(s)


Strip Lining

Strips of metal plates that are welded to the inside of the vessel wall for the purpose of protecting the vessel construction material from interaction with process fluids. Normally the strips are of a more corrosion resistant or erosion resistant alloy than the vessel wall and provide additional corrosion/erosion resistance. This is similar to plate lining except narrower strips are used instead of larger plates.

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

Strip Lining

Strips of metal plates that are welded to the inside of the vessel wall. Normally the strips are of a more corrosion resistant or erosion resistant alloy than the vessel wall and provide additional corrosion/erosion resistance. This is similar to plate lining except strips are used instead of larger plates. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards
SHI

SHI

Definition(s)


Substance hazard index (SHI)

The substance hazard index (SHI) is an index developed to identify objectively the toxic chemicals or substances that could be involved in a catastrophic release. The index is a simple function of vapor pressure and toxicity: the higher a substance’s vapor pressure, the more readily it will enter the atmosphere in the event of a release. The greater a substance’s toxicity, the lower the concentration required to present a hazard, and the higher its SHI. A more detailed definition, along with an illustrative list of substances and their SHIs, is presented in Appendix C. Source: API RP 750, Management of Process Hazards, First Edition, January 1990. Global Standards  
Steering Gear Power Unit

Steering Gear Power Unit

Definition(s)


Steering Gear Power Unit

Steering gear power unit means, in the case of: 1. electric steering gear, an electric motor and its associated electrical equipment; 2. electrohydraulic steering gear, an electric motor and its associated electrical equipment and connected pump; 3. Other hydraulic gear, a driving engine and connected pump. Source: IMO Resolution A.1023(26), Code for the Construction and Equipment of Mobile Offshore Drilling Units (2009 MODU Code), 2009. Global Standards  

Steering Gear Power Unit

Steering gear power unit is:
  1. in the case of electric steering gear, an electric motor and its associated electrical equipment;
  2. in the case of electrohydraulic steering gear, an electric motor and its associated electrical equipment and connected pump; or
  3. in the case of other hydraulic steering gear, a driving engine and connected pump. <Chapter II-1, regulation 3>.
Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 5, Main and Auxiliary Machinery, June 2013, Lloyd’s Register, Global Standards
Service Spaces

Service Spaces

Definition(s)


Service Spaces

Service spaces are those used for galleys, pantries containing cooking appliances, lockers and store-rooms, workshops other than those forming part of the machinery spaces, and similar spaces and trunks to such spaces. Source: IMO Resolution A.1023(26), Code for the Construction and Equipment of Mobile Offshore Drilling Units (2009 MODU Code), 2009. Global Standards  

Service Spaces

Service spaces are those spaces used for galleys, pantries containing cooking appliances, lockers, mail and specie rooms, store-rooms, workshops other than those forming part of the machinery spaces and similar spaces and trunks to such spaces.<Chapter II-2, part A, regulation 3> 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, International Maritime Organization. Regulatory Guidance Source: IMO Resolution MSC.99(73), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 5 December 2000, International Maritime Organization. Legislation  

Service Spaces

Service spaces are those used for galleys, pantries containing cooking appliances, lockers and storerooms, workshops other than those forming part of the machinery spaces, and similar spaces and trunks to such spaces. Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 7, Safety Systems, Hazardous Areas and Fire, June 2013, Lloyd’s Register, Global Standards
Survival Craft

Survival Craft

Definition(s)


Survival Craft

Survival craft means a craft capable of sustaining the lives of persons in distress after abandoning the unit on which they were carried. The term includes lifeboats and liferafts, but does not include rescue boats. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). Regulations  

Survival Craft

Survival craft has the same meaning as defined in SOLAS regulation III/3. Source: IMO Resolution A.1023(26), Code for the Construction and Equipment of Mobile Offshore Drilling Units (2009 MODU Code), 2009. Global Standards  

Survival Craft

Craft capable of sustaining the lives of persons in it from the time of abandoning the installation. Source: ISO 15544:2000, Petroleum and natural gas industries – Offshore production installations – Requirements and guidelines for emergency. Global Standards  

Survival Craft

Survival craft is a craft capable of sustaining the lives of persons in distress from the time of abandoning the ship.  <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. Legislation
Steel or Equivalent Material

Steel or Equivalent Material

Definition(s)


Steel or Equivalent Material

Steel or equivalent material has the same meaning as defined in SOLAS regulation II-2/3. Source: IMO Resolution A.1023(26), Code for the Construction and Equipment of Mobile Offshore Drilling Units (2009 MODU Code), 2009. Global Standards  

Steel or Other Equivalent Material

Steel or other equivalent material means any non-combustible material which, by itself or due to insulation provided, has structural and integrity properties equivalent to steel at the end of the applicable exposure to the standard fire test (e.g. aluminium alloy with appropriate insulation). <Chapter II-2, part A, regulation 3>. Source: IMO Resolution MSC.99(73), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 5 December 2000, International Maritime Organization. Legislation
SOLAS

SOLAS

Definition(s)


SOLAS

SOLAS means the International Convention for the Safety of Life at Sea, 1974, as amended. Source:IMO MSC.1/Circ.1002, Guidelines on alternative design and arrangements for fire safety, 26 June 2001, International Maritime Organization. Regulatory Guidance Source: IMO MSC.1/Circ.1212, Guidelines on alternative design and arrangements for SOLAS chapters II-1 and III, 15 December 2006, International Maritime Organization. Regulatory Guidance Source: IMO Resolution A.1023(26), Code for the Construction and Equipment of Mobile Offshore Drilling Units (2009 MODU Code), 2009. Global Standards Source: IMO Resolution MSC.253(83), Recommendation on Performance Standards for Navigation Lights, Navigation Light Controllers and associated equipment, 8 October 2007, International Maritime Organization. Regulatory Guidance Source: IMO Resolution MSC.266(84), Code of Safety for Special Purpose Ships, 2008 (2008 SPS Code), 13 May 2008, International Maritime Organization. Regulatory Guidance  

SOLAS

Safety of Life at Sea, International Maritime Organization. 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  

SOLAS

International Convention of the International Maritime Organization, dealing with safety of life at sea. 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  

SOLAS

Safety Of Life At Sea (Conference). Source: ISO 15544:2000, Petroleum and natural gas industries – Offshore production installations – Requirements and guidelines for emergency. Global Standards  

SOLAS

SOLAS means the International Convention for the Safety of Life at Sea, 1974, as amended. 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, International Maritime Organization. Regulatory Guidance
Substance Hazard Index

Substance Hazard Index

Definition(s)


Substance hazard index (SHI)

The substance hazard index (SHI) is an index developed to identify objectively the toxic chemicals or substances that could be involved in a catastrophic release. The index is a simple function of vapor pressure and toxicity: the higher a substance’s vapor pressure, the more readily it will enter the atmosphere in the event of a release. The greater a substance’s toxicity, the lower the concentration required to present a hazard, and the higher its SHI. A more detailed definition, along with an illustrative list of substances and their SHIs, is presented in Appendix C. Source: API RP 750, Management of Process Hazards, First Edition, January 1990. Global Standards  
Serious Danger

Serious Danger

Definition(s)


Serious danger

Serious danger refers to the potential for serious injury to persons within and outside the workplace, including permanent injury to health, whether resulting immediately from the catastrophic release or as a delayed effect. Source: API RP 750, Management of Process Hazards, First Edition, January 1990. Global Standards  
Significant Injury/illness

Significant Injury/illness

Definition(s)


Significant injury/illness

A work-related case involving any of the following diagnoses by a physician or other licensed health care professional:
  1. Cancer;
  2. Chronic irreversible disease;
  3. Punctured ear drum; or
  4. Fractured or chipped bone.
Source: API RP 75, Recommended Practice for Development of a Safety and Environmental Management Program for Offshore Operations and Facilities: Upstream Segment, Third Edition, May 2004. Global Standards  
Surface Casing

Surface Casing

Definition(s)


Surface Casing

Casing that is run inside the conductor casing to protect shallow water zones and weaker formations
  • Note: 1 to entry: Surface casing can be cemented within the conductor casing and is often cemented back to the mud-line or surface.
  • Note: 2 to entry: The surface wellhead is normally installed on this casing for surface wells.
[SOURCE: API RP 90, modified] Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards

Surface Casing

See casing. Source: API RP 54, Recommended Practice for Occupational Safety for Oil and Gas Well Drilling and Servicing Operations, Third Edition, August 1999 (2007). Global Standards  

Surface Casing

The first string of casing to be set and cemented in a well, the principal purpose of which is to protect fresh water aquifers. It also prevents lost circulation while drilling deeper, supports blowout prevention equipment (if used), and supports deeper casing strings and the tubing. Source: API BULLETIN E3, Environmental Guidance Document: Well Abandonment and Inactive Well Practices for U.S. Exploration and Production Operations, First Edition, January 1993 (Reaffirmed June 2000). Global Standards  

Surface

Casing including HPWHH (first casing string attached to subsea BOPs. Normal clearance casing OD in.: 20. Tight clearance casing OD in.: 22. NOTE These are examples only. Each well can have variations in number of casing strings and sizes. Naming conventions can vary. The heavy-wall surface casing designs may allow 13 5/8 in. to be run as a liner and not tied back. Source: API RP 96, Deepwater Well Design and Construction, First Edition, March 2013. Global Standards  

Surface Casing

"Surface casing" means a string of casing set and cemented in a well to prevent lost circulation while drilling deeper and to protect strata known or reasonably expected to serve as a source of drinking water for human consumption; usually "surface casing" is the first string of casing upon which BOPE is set. Source: Alaska Oil and Gas Conservation Commission, Definitions, Alaska Admin. Code tit. 20, § 25.990, December 7, 2012. Regulations  

Surface Casing

“Surface casing” means the casing that is installed in a well to a sufficient depth, in a competent formation, to establish well control for the continuation of the drilling operations (tubage de surface). Source: Canada Oil and Gas Drilling and Production Regulations, SOR/2009-315, February 2013. Regulations Source: Drilling and Production Guidelines, The Canada-Nova Scotia Offshore Petroleum Board and Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada, March 31, 2011. Regulatory Guidance Source: Nova Scotia Offshore Petroleum Drilling and Production Regulations, SOR/2009-317, Canada, current to May 31, 2012. Regulations  

Surface Casing

“Surface casing” means a string of casing set and cemented to isolate and protect the deepest underground source of drinking water and to serve as a base for well control equipment. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. Regulations  

Surface Casing

“Surface casing” means any casing placed in the well bore for the purpose of protecting fresh water strata and other reservoir rock, and/or for the prevention of the invasion of fresh water into the well bore. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. Regulations  

Surface Casing

"Surface casing" means the first casing string designed and run to protect the treatable water formations and/or control fluid or gas flow from the well. Source: Corporation Commission, Oil and Gas Conservation, Oklahoma Administrative Code 165:10, February 2013. Regulations  

Surface Casing

"Surface casing—A string or strings of casing used to isolate the wellbore from fresh groundwater and to prevent the escape or migration of gas, oil or other fluids from the wellbore into fresh groundwater. The surface casing is also commonly referred to as the water string or water casing. Source: Oil and Gas Wells, Pennsylvania Code, Title 25, Chapter 78, December 2012. Regulations  

Surface Casing

Casing run inside the conductor casing to protect shallow water zones and weaker formations and may be cemented within the conductor string and is often cemented back to the mudline. The surface wellhead is normally installed on this string for surface wells. Source: API RP 90, Annular Casing Pressure Management for Offshore Wells, Upstream Segment. First Edition, August 2006. Global Standards
Supervisor

Supervisor

Definition(s)


Supervisor

Person who has been given the control, direction, or supervision of work performed by one or more personnel. Source: API RP 54, Recommended Practice for Occupational Safety for Oil and Gas Well Drilling and Servicing Operations, Third Edition, August 1999 (2007). Global Standards Source: API RP 74, Recommended Practice for Occupational Safety for Onshore Oil and Gas Production Operation, First Edition, October 2001 (March 2007). Global Standards  

Supervisor

“Supervisor” means a person appointed in writing by a diving contractor, pursuant to subsection 9(3), as a diving supervisor or an ADS supervisor to supervise a diving operation (directeur). Source: Canada Oil and Gas Diving Regulations, SOR/88-600, February 2013. Regulations Source: Nova Scotia Offshore Area Petroleum Diving Regulations, SOR/95-189, Canada, current to May 31, 2012. Regulations  

Supervisor

“Supervisor” means a person who has charge of a workplace or authority over a worker. Source:  Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. Regulations  

Supervisor

"Supervisor" means a person who has been given the control, direction and/or supervision of work performed by one or more employees. Source: State of Wyoming Occupational Safety and Health Rules and Regulations for Oil and Gas Well Drilling, Revised January 8, 2013. Regulations  

Supervisor

“Supervisor” means a person appointed to supervise under regulation 6(2)(b). Source: The Diving at Work Regulations 1997, UK S.I. 1997/2776, 1997. Regulations  
Stabbing a Valve

Stabbing a Valve

Definition(s)


Stabbing a valve

Aligning and screwing a valve onto the end of a pipe. Source: API RP 54, Recommended Practice for Occupational Safety for Oil and Gas Well Drilling and Servicing Operations, Third Edition, August 1999 (2007). Global Standards  

Stabbing a valve

“Stabbing a valve” means aligning and screwing a valve onto the end of a pipe. [Mich. Admin. Code R 408 (2013)]. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. Regulations  
Special Services

Special Services

Definition(s)


Special services

Those operations utilizing specialized equipment and personnel to perform work processes to support well drilling and servicing operations. Source: API RP 54, Recommended Practice for Occupational Safety for Oil and Gas Well Drilling and Servicing Operations, Third Edition, August 1999 (2007). Global Standards  

Special services

“Special services” means those operations requiring specialized equipment and personnel to perform work processes to support well drilling and servicing operations. [Mich. Admin. Code R 408 (2013)]. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. Regulations  
Swabbing

Swabbing

Definition(s)


Swabbing

Lifting of well fluids to the surface using a piston-like device installed on a wireline. Swabbing may inadvertently occur due to piston action as pipe or assemblies are pulled from the well. Source: API RP 54, Recommended Practice for Occupational Safety for Oil and Gas Well Drilling and Servicing Operations, Third Edition, August 1999 (2007). Global Standards  

Swabbing

The lowering of the hydrostatic pressure in the well bore due to upward movement of tubulars and/or tools. Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global Standards  

Swabbing

“Swabbing” means the planned lifting of well fluids to the surface using a piston like-like device installed on a wire line. Swabbing may inadvertently occur due to piston action as pipe or assemblies are pulled from the well. [Mich. Admin. Code R 408 (2013)]. Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. Regulations  
Swingline

Swingline

Definition(s)


Swingrope (swingline)

A vertically suspended rope knotted on the lower end to provide hand grips, hung above the boat landing on an offshore platform, and used to facilitate personnel transfer between boat and platform and vice versa. Source: API RP 54, Recommended Practice for Occupational Safety for Oil and Gas Well Drilling and Servicing Operations, Third Edition, August 1999 (2007). Global Standards