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API and ISO Standards for Gas Lift

In this article, the last updated list of API and ISO standards for Gas Lift is presented. These standards can be considered as reference documents as well as a basis for training classes in the subject of Gas Lift.


API Specification 11V1 – Gas lift valves, orifices, dummies

Specifications for manufacture and functional testing of gas lift valves, orifices, reverse flow valves, and dummy valves.

This API standard has been replaced by the following ISO standards:

      ISO 17078.1 (Part 1: Side-pocket mandrels mandrels):

This standard was last reviewed and confirmed in 2014. Therefore this version remains current.

Abstract:

ISO 17078:2004 provides requirements for side-pocket mandrels used in the petroleum and natural gas industry. This part of ISO 17078 includes specifying, selecting, designing, manufacturing, quality control, testing, and preparation for shipping of side-pocket mandrels.

This part of ISO 17078:2004 does not address nor include requirements for end connections between the side-pocket mandrels and the well conduit. The installation and retrieval of side-pocket mandrels is outside the scope of this part of ISO 17078:2004. Additionally, this part of ISO 17078:2004 does not include specifications for centre-set mandrels, or mandrels that employ or support tubing-retrievable flow control devices.

This part of ISO 17078:2004 does not include gas-lift or any other flow-control valves or devices, latches, and/or associated wire line equipment that can or cannot be covered in other ISO specifications.

The side-pocket mandrels to which this part of ISO 17078:2004 refers are independent devices that can accept installation of flow-control or other devices down-hole.

      ISO 17078.2 (Part 2: Flow-control devices for side-pocket mandrels):

This standard was last reviewed and confirmed in 2014. Therefore this version remains current.

Abstract:

ISO 17078-2:2007 provides requirements for subsurface flow-control devices used in side-pocket mandrels (hereafter called flow-control devices) intended for use in the worldwide petroleum and natural gas industry. This includes requirements for specifying, selecting, designing, manufacturing, quality-control, testing and preparation for shipping of flow-control devices. Additionally, it includes information regarding performance testing and calibration procedures.

The installation and retrieval of flow-control devices is outside the scope of ISO 17078-2:2007. Additionally, ISO 17078-2:2007 is not applicable to flow-control devices used in centre-set mandrels or with tubing-retrievable applications.

ISO 17078-2:2007 does not include requirements for side-pocket mandrels, running, pulling, and kick-over tools, and latches that might or might not be covered in other ISO specifications. Reconditioning of used flow-control devices is outside of the scope of ISO 17078-2:2007.

      ISO 17078.3 (Part3: Running tools, pulling tools and kick-over tools and latches for side-pocket mandrels):

This standard was last reviewed and confirmed in 2014. Therefore this version remains current.

Abstract:

ISO 17078-3:2009 provides requirements and guidelines for running tools, pulling tools, kick-over tools and latches used for the installation and retrieval of flow control and other devices to be installed in side‑pocket mandrels for use in the petroleum and natural gas industries. This includes requirements for specifying, selecting, designing, manufacturing, quality control, testing and preparation for shipping of these tools and latches. Additionally, it includes information regarding performance testing and calibration procedures.

      ISO 17078.3 (Part 4: Practices for side-pocket mandrels and related equipment):

This standard was last reviewed and confirmed in 2016. Therefore this version remains current.

Abstract:

ISO 17078-4:2010 provides informative documentation to assist the user/purchaser and the supplier/manufacturer in specification, design, selection, testing, calibration, reconditioning, installation and use of side-pocket mandrels, flow-control devices and associated latches and installation tools. The product-design and manufacturing-related requirements for these products are included within the other parts of ISO 17078.

API RP 11V2 – Gas lift valve testing, modeling

Recommended practices for flow performance testing and development of performance models for IPO & PPO gas lift valves.

This API standard has been replaced by the following ISO standard ISO 17078.2.

RP 11V5: Recommended Practices for Operation, Maintenance, Surveillance, and Troubleshooting of Gas-Lift Installations

Assists gas-lift system operators, analysts, technicians, engineers, and others in understanding how to effectively plan, operate, maintain, troubleshoot, and provide surveillance for gas-lift systems and gas-lift wells. These recommended practices discuss continuous gas-lift with injection in the casing/tubing annulus and production up the tubing. Annular flow gaslift (injection down the tubing and production up the annulus), dual gas-lift (two tubing strings in the same casing), and intermittent gas-lift are mentioned; however, most of the discussion focuses on conventional continuous gas-lift. Pages: 123

3rd Edition | June 2008 | Reaffirmed: March 2015

2-Year Extension: June 2013 | Product Number: G11V53 | Price: $155.00.

RP 11V6: Recommended Practice for Design of Continuous Flow Gas Lift Installations Using Injection Pressure Operated Valves

Sets guidelines for continuous flow gas lift installation designs using injection pressure operated valves. The assumption is made that the designer is familiar with and has available data on the various factors that affect a design. Pages: 88

2nd Edition | July 1999 | Reaffirmed: March 2015

2-Year Extension: June 2013 | Product Number: G11V62 | Price: $149.00

API RP 11V7 – Gas lift valve reconditioning

Recommended practices for repair and reconditioning, testing, and setting used gas lift valves.

This API standard has been replaced by the following ISO standard ISO 17078.2.

RP 11V8: Recommended Practice for Gas Lift System Design and Performance Prediction

Emphasizes gas lift as a system and discusses methods used to predict its performance. Information must be gathered and models validated prior to a system design, which must precede wellbore gas lift mandrel and valve design. The subsurface and surface components of the system must be designed together to enhance the strengths of each and to minimize the constraints. Pages: 79.

1st Edition | September 2003 | Reaffirmed: March 2015

2-Year Extension: June 2013 | Product Number: G11V81 | Price: $119.00

RP 19G9: Design, Operation, and Troubleshooting of Dual Gas-Lift Wells

Provides recommended practices for the selection, design, operation, surveillance, optimization, automation, and troubleshooting of dual gas-lift wells.

The purpose of this document is to present recommended practices, guidelines, and tools to help obtain optimum production from dual gas-lift wells. This document also contains practices that should be avoided to minimize problems, inefficiencies, and poor economics that may be associated with ineffective dual gas-lift operations. Compared to single completions, dual completions typically have a higher initial cost, have more operating problems, are more difficult and expensive to work over, and may produce less efficiently.

It is not the purpose of this document to recommend the practice of dual gas-lift. In some cases, dual gas-lift is problematic and often ineffective.

Often it is difficult or even impossible to effectively produce both completions in a dual well using gas-lift, over the long term. Where there are other feasible alternatives to produce dual wells, they should be considered. However, many dually completed oil wells should be artificially lifted—initially, or after reservoir pressures have declined and/or water cuts have increased. In many cases, the only practical method of artificial lift for these wells is gas-lift. Therefore, every effort should be made to design and operate dual gas-lift systems as effectively as possible. Pages: 90

2nd Edition | April 2015 | Product Number: G19G92 | Price: $165.00

Reference:

American Petroleum Institute (API): 2016 Publications Catalog

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