Emissions Reduction through Production System Optimisation

Ruben van GRINSVENSimon JAKEMAN Hugo van ROSSEM

Shell Global Solutions

Introduction

Facilities control

Operations control

Sub-surface control

Monitoring and SurveillanceWithout monitoring no optimisation

‘FieldWare Production Universe’

SUBSURFACE CONTROL EXAMPLE: Cone Control

Simple surface instrumentation

& control

Water CuspingWater Coning

Gas Cusping

Gas Coning

Water CuspingWater Coning

Gas Cusping

Gas Coning

Positioner

WHJB

FLP

FLT

impulse airline

THP

gaslift100 barg

4" Flowline

4" Flowline

CHP

I/PTHT

@ 4.3 barg

WELLHEAD

TUBING

10X2 Multicore Cable From Other WHJB

Multicore CableTo

Gathering Station

10X2 Multicore Cable

WCJB

ChokeValve

SUBSURFACE CONTROL EXAMPLE: Cone Control

OPERATIONS CONTROL EXAMPLE:Gas lift optimisation

OPERATIONS CONTROL EXAMPLE:Gas lift optimisation

• Customer experience–5 - 15% more production using significantly less gas lift gas–Production sustained during gas lift compressor outage–Easier for operator to stabilize process after compressor

outage

• HSE impact–Less compressed gas needed for oil lift–Sending Operators less frequently to hazardous locations

FACILITIIES CONTROL EXAMPLES

• Collection of vent gas from oil storage tanks using eductors

• Collection of overhead vapour from glycol regeneration units

INCREASED AWARENESS: Emissions Forecasting

• Use of EIU–Allows to quantify and compare the impact on the emissions

for several options. Helps in decision making

• Use of IPSM for Production Forecasting (instead of decline curves) :

–Enables early identification of Environmental effects (Production System Optimisation) and quantification of associated:

• Emission volumes• Energy consumption

QUESTIONS

How do you do emissionsforecasting?

Biggest gains really from new

Technology?

How embedded is the use of EIU in project

screening?

How do you track performance?

How do you share ideasacross your organisation?

Responsibility with Operations, Design,

HSE?

Where do you see thebiggest benefits are?

?

Are the biggest steps the ones that create the most

ownership…..?

Shell Global Solutions

Thank You

www.shellglobalsolutions.com