ISO 15551-1ESP Systems

Task Group Leader, Shauna NoonanKeeper of the document, Jesus Chacin

WG 4 Liaison, David McCalvin

Downhole equipment for petroleum and natural gas industries – Electric

submersible pumpsNWI, approved14 of 15 members approve d forming the work

group to draft the standard, one did not vote BSN (Indonesia)

In the voting process Brazil, China, France, Italy, UK, and US offered experts to participate

In the balloting China also offered “Refer to Chinese standard GB/T 16750-2008” (translation pending) and “Provide methods and regulations to test all parts of ESP”

General Background This effort is in response to repeated request by ESP

experts in several major oil companies stating that ESP specifications were needed. Since ISO is more internationally accepted in the area of their operations, they initiated a new work proposal within the ISO system.Grades were needed within testing and manufacturing

specifications to be flexible to end-user needs.Need a single standard that covers the entire ESP system was

the interest of the 21 kick-off meeting attendeesInitial meeting of the work group, 11/12 November 2009 in

Houston

Members of the ESP work group (16) include representatives from:

SchlumbergerCentriliftBorets-WeatherfordWoodgroup ESPConocoPhillipsExxonMobilShellPetrobras

OxyChevronStatoilTotalNexenENI (TBN)CNPC (TBN)CFER – document

keeper.

Scope of ISO 15551-1 (part 1)

This part of ISO 15551 provides requirements for the design, design verification and validation, manufacturing and data control, performance ratings, functional evaluation, repair, handling and storage of the electrical submersible pump (ESP) systems for use in the petroleum and natural gas industry. This part of ISO 15551 is applicable to those components meeting the definition of centrifugal pumps including gas handling devices, discharge heads, seal sections, intake systems, gas separators, induction motors, motor lead extension and potheads, and power cables.

- Industry standards or RPs do not exist on the testing of these components, to our knowledge.

Scope of ISO 15551-1 (part 2)This International Standard includes normative annexes that establish requirements for: component design validation, application verification and functional evaluation. Additionally, informative annexes address ESP sizing, application and equipment selection guidelines, repair and reconditioning methods, system testing, analysis after use, and auxiliary equipment, surface power systems. (installation and operation)

Equipment not covered by the requirements of this part of ISO 15551 includes: motor and pump shrouds, motor oil filters, electric penetrators and feed-through system, cable clamps and banding, centralizers, intake screens, by-pass tools, check and bleeder valves, component adaptors, capillary lines, and permanent magnet motors. These items may or may not be covered by other standards

Which API documents will be most affected by ISO 15551?

11S: RP for Operation, Maintenance and Troubleshooting of ESPs

11S1: RP for ESP Teardown report11S2: RP for ESP Testing11S3: RP for ESP Installations11S4: RP for Sizing and Selection of ESP

Installations11S5: RP for Application of ESP Cable

Systems11S6: RP for Testing of ESP Cable11S7: RP on Application and Testing

of ESP Seal Chamber Sections11S8: RP on ESP System Vibration

ISO 15551-1 is envisioned to

include requirements that

will make these documents

outdated. It is recommended that API postpone work on these RPs until

ISO 15551-1 is complete to make

the decision to adopt it .

How can API work on their revisions in compliment to ISO?

It is recommended that the API group focus on revisions of 11S, 11S3 and 11S4. Those documents can be informative references in the ISO standard and David McCalvin thinks that perhaps ultimately, all three can be combined into one ISO document (possibly 15551-2: ESP Selection, Installation and Troubleshooting).

It is also recommended that the API group focus on cable and the revisions of 11S5 (Cable applications) and 11S6 (Cable testing). This can also be made into a separate ISO document upon completion (possibly 15551-3: ESP Cable Applications and Testing).

With this method the API and ISO sets of standards are realized by the industry as complementary, we are working with the API team to ensure this flows smoothly.

ISO 15551-1 is proceeding quickly…First meeting was held November, 2009.Draft on technical and user specifications was targeted

for January 15th , 2010.Committee met to discuss motor ratings on January 19th,

2010.Draft to be reviewed and expanded during next

committee meeting in Aberdeen on February 13-14th.At least two other meetings are scheduled in 2010.We are targeting August 2011 as our first draft to CD

date, this maybe a bit optimistic but tight goals keep the process moving, none of the work group members have time to waste.

…on the road towards becoming a standard