Gas Handling Options for Gas Handling Options for Associated Gas in Deepwater Associated Gas in Deepwater Developments in the Gulf of Developments in the Gulf of

MexicoMexico

Project for theProject for the Minerals Management ServiceMinerals Management Service

byby

Offshore Technology Research Offshore Technology Research Center Center

with assistance of with assistance of

Offshore Operators Committee Offshore Operators Committee

Gas Handling Option StudyGas Handling Option StudyGas Flange

Oil Flange

Shuttle Tanker

Gas Pipeline

FPSO

Gas Handling Options

Gas Product Ports

MMS ObjectivesMMS Objectives

Objective technical assessment of technology Objective technical assessment of technology options for handling gas associated with for options for handling gas associated with for deepwater oil developments in the GOMdeepwater oil developments in the GOM

Assessment results to be used by MMSAssessment results to be used by MMS Reviews readiness & safety of gas handing options Reviews readiness & safety of gas handing options

proposed for deepwater FPSO projectsproposed for deepwater FPSO projects Studies pertaining to deepwater oil & gas Studies pertaining to deepwater oil & gas

developmentsdevelopments

Gas Handling OptionsGas Handling Options

Study to consider Study to consider PipelinesPipelines LNG – Liquefied Natural Gas LNG – Liquefied Natural Gas CNG – Compressed Natural GasCNG – Compressed Natural Gas GTL – Gas-to-Liquid ProductsGTL – Gas-to-Liquid Products Injection Injection GTW – Gas to Wire (offshore power GTW – Gas to Wire (offshore power

generation)generation) Gas to Solids (hydrates)Gas to Solids (hydrates) OthersOthers

PipelinesPipelines to be considered as the to be considered as the baselinebaseline in assessing options in assessing options

Gas Handling Option

DescriptionsTransport

Delivery Point & Process

Efficiency Metric

Source : High Pressure

Separator 1200 psi, 100FOption

CNG

LNG

CNG

ChemicalConversion

LoadChemicalsGTL Unload

Subsea HVDC CableGTW

Pipe Dehydration

Chiller

Treater

Gas Plant

Gas Plant

Gas Plant

Condition Feedstock

Power Plant

INJ ReservoirDeferred Gas Production

Gas Handling Options

Gas Pipeline

Power Plant

-1

Gas Pipeline

Product Pipeline

BTU

BTU

BTU

BTU

BTU

BTU

Condition Feedstock

Condition Feedstock

Condition Feedstock

Condition Feedstock

Condition Feedstock

BTU

BTU

BTU

BTU

BTU

BTU

Technical Assessment Technical Assessment MetricsMetrics

Technical, Commercial, & Technical, Commercial, & Regulatory Feasibility & Regulatory Feasibility & ReadinessReadiness

HSEHSE Costs (CAPEX, OPEX)Costs (CAPEX, OPEX) Process EfficiencyProcess Efficiency

Technology (“Process”) StepsTechnology (“Process”) Steps

CNG

LNG

CNG

ChemicalConversion

LoadChemicalsGTL Unload

GTW

Pipe Dehydration

FeedstockConditioning

FeedstockConditioning

FeedstockConditioning

FeedstockConditioning

Chiller

Treater

Gas Plant

Gas Plant

Gas Plant

FeedstockConditioning

Power Plant

FeedstockConditioningINJ Reservoir

Deferred Gas Production

Gas Handling Options

Gas Pipeline

Power Plant

-

Gas Pipeline

Product Pipeline

CNG

LNG

CNG

ChemicalConversion

LoadChemicalsGTL Unload

Subsea HVDC CableGTW

Pipe Dehydration

FeedstockConditioning

FeedstockConditioning

FeedstockConditioning

FeedstockConditioning

Chiller

Treater

Gas Plant

Gas Plant

Gas Plant

FeedstockConditioning

Power PlantPower Plant

FeedstockConditioningINJ Reservoir

Deferred Gas Production

Gas Handling Options

Gas Pipeline

Power PlantPower Plant

-

Gas Pipeline

Product Pipeline

11

Dehyd

ratio

n &

Treat

men

t

Convert

to

Transp

ort Sta

te

Load

Transp

ort

Unload

Convert

to S

ales

State

Turret

OIL PROCESS

VESSEL

Gas Process

Assume FPSO-based system using parameters from EIS/CRA

Establish Key System Interfaces & Requirements

Feed to gas process : 1,200 psig 100 deg. F

Subsurface ParametersSubsurface Parameters

Central GOMWestern GOM

1000-2000

100A

300B

600C

Maximum Gas CaseD

GOR

(MMSCF/BO)

Recoverable Reserves

(MMBO)

Reservoir Case

Assumed Destinations for Assumed Destinations for Gas/Gas ProductsGas/Gas Products

PL

CNG

LNG

GTL

PowerCentral GOMWestern GOM

Study ProcessStudy Process

Study Design Mtg

Complete Assessment

Final Report

PL OtherCNGGTLLNG

FJ M A M J J A S O N D J MF

Final Project Meeting

Workshops

INJ