API Recommended Practice 17XRecommended Practice for Design, Installation, and Maintenance of Subsea Booster Pump Systems

Status Report

October 3, 2015

Mike Zerkus - michael.zerkus@genesisoilandgas.com – 832-217-0216

Agenda

• Safety Moment

• Mission of API-17X

• Over all Status

• Overview of Subsea Electrical Power Subsection

2

Job Site Electrical Safety

• Recently I participated in a Habitat for Humanity home building activity

• I make it a habit to “look around” for anything that could be a safety problem – especially electrical

• I spotted a house power cable (unconnected) laying on the ground – I followed the wire up to the pole, it was connected to the transformer and the fuse/disconnect was CLOSED!

The Wire Was Live!!!

• I used my electrostatic voltage detector to verify that the wire was live and alerted the foreman

3 Controls and Umbilicals Group Meeting - August 2013

Electrical SafetyAC Voltage Detector

• Every Home Owner SHOULD own one of these and know how to use it

• It should be part of your standard PPE for plant visits

• AC detector, detects the electrical field present around any wire which is connected to an AC source

• It never touches the wire

• AC detectors can be used even if no current is flowing through the wire in question

• Detection of 90V to 1000V AC

• Cost: About $10 to $40

Mike Zerkus – The Early Years

4

Mission of API-17X Recommended Practice on Subsea Pumping Systems

• Need/Opportunity:

– Subsea pumping systems don’t have governing standards or practices that can be used for guidance by the end users or the manufacturers

• Purpose:

– Assist engineers working on designing subsea pumps and to provide guidance on: • minimum functional requirements• system description• common methods of the design steps• engineering, reporting requirements and reliability considerations

– The Recommended Practice (RP) is intended to provide: guidance to the design, qualification testing, factory acceptance testing and deployment of the subsea pumping system.

– The RP will assist operators, suppliers and manufacturers to reach a common goal for the design of subsea pumps and thereby enable standardization of the design process.

Title of Presentation5

API-17X Status

• Raw basic text for first draft is complete

• A table of contents for 1st draft is complete

• The process of integrating the chapter texts into the 1st draft has begun

• Working toward a complete 1st draft by the end of the year

Title of Presentation6

API-17X Subsea Electrical Power Subsection

• The purpose of the API RP 17X Subsea Electrical Power Subsection is to provide an overview for defining and developing a control system, subsea electric power system, and a safety system for a subsea booster pump system.

• The intention of this document is to provide general guidelines to be followed in the design of a subsea booster pump system throughout the various development stages of a project: pre-FEED, FEED, and EXECUTE.

• This guide is not intended to be a textbook

• It is intended to be a guide to the typical work flow, concerns, issues, and deliverables of the power, control and safety area of a typical a subsea booster pump project.

• API-17X Subsea Electrical Power Subsection has three major sub sections

– Subsea Power

– Safety

– Controls

Title of Presentation7

API-17X Subsea Electrical Power Subsection

• Scope:

– The scope of the API-17X Subsea Electrical Power Subsection is confined to systems where a single booster pump is powered by a single circuit from the platform.

• The field may have multiple booster pumps, but each pump will be powered, and controlled from the platform.

• In such systems, the umbilical will have one or more 3-phase, AC power circuits that each deliver power to a single subsea pump motor, and each motor may operate at a different frequency from the other motors.

• The operating frequency of each load may vary from moment to moment according to a control algorithm set up for that pump.

Title of Presentation8

Scope

Title of Presentation9

Booster P

ump

Booster P

ump

Um

bilical

2 off 240 m

m2 3Ø

triples

HV

Pen

etrator

24

00

h.p

.

24

00

h.p

.

6kV

6kV

6kV

Platform Power

HV

Pen

etrator

Platform Power

5 o

r 12

Mile

s

Backup

Cen

tril

ift

100

0hp

Mo

tor

Cen

tril

ift

Pu

mp

Wel

l 2C

entr

ilif

t P

um

p

Wel

l 1C

entr

ilif

t 1

000h

p M

oto

rC

entr

ilif

t P

um

pC

entr

ilif

t 1

000h

p M

oto

rC

entr

ilif

t P

um

p

Pri

mar

y

Pu

mp

Bac

ku

p

Pu

mp

Backup

Platform

VS

D

~~

VSD 1 VSD 2 VSD 24 VSD 25

...

VS

D

~~

VS

D

~~

VS

D

~~

Filter Filter

6kV 6kV

Filter Filter

6kV

UTA 1 UTA 13

...6kV

6kV

Booster P

ump

VS

D

~~

Um

bilical

2 off 16 m

m2 3Ø

triples

HV

Pen

etrator

240

0 h

.p.

240

0 h

.p.

6kV

6kV

2 off 2.5MVA Transformers

Platform Power

HV

Pen

etrator

6kV

6kV

Platform Power

VSD 1 VSD 2 VSD nVSD n-1

...

UTA 1 UTA n

12 o

r 20

Mile

s

Backup

Cen

trili

ft 1

000

hp

Mo

tor

Cen

trili

ft P

um

p

Wel

l 2C

entr

ilift

Pu

mp

Wel

l 1C

entr

ilift

10

00h

p M

oto

rC

entr

ilift

Pu

mp

Cen

trili

ft 1

000

hp

Mo

tor

Cen

trili

ft P

um

p

Pri

mar

y P

um

p

Bac

kup

P

um

p

Backup

Platform

VS

D

~~

35kV 35kV

VS

D~

~

VS

D

~~

35kV 35kV

Booster P

ump

2 off 1.0 MVA Transformers

...Inst

rum

enta

tion

Mod

ule

Instrumen

tation M

odule

API-17X Subsea Electrical Power Subsection

• What is not in scope

– This API-17X Subsea Electrical Power Subsection does not cover subsea power distribution.

• Subsea power systems, both AC and DC, requiring subsea power distribution use a single circuit to deliver power to a subsea point where power is then distributed to several loads, where a subsea VFD or other means control each subsea load.

– Subsea water injection is not covered in the scope of this document.

– Well control and manifold control are not covered in this document.

– This document covers only two types of subsea motors used to operate subsea pumps

• Induction Motors and Permanent magnet synchronous motors. All other types of motors are not covered.

Title of Presentation10

API-17X Subsea Electrical Power Subsection Target Audience

• This API-17X Subsea Electrical Power Subsection is intended for engineers responsible for the design of a subsea safety, control and electric power system used to support a subsea booster pump project, and/or personnel who require a general orientation to the basic design approach of subsea booster pump systems and the associated key design concerns.

• It is assumed that the person reading this document is familiar with the general design principles and equipment associated with subsea oil and gas production, as well as equipment typically used in industrial AC power systems and with the control of large AC motors.

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