Production Site DesignRecovery and Processing of VOC Flashing EmissionsMay 11th and 12th, 2011

OIPA Air Emissions Workshops

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Chesapeake SiteWestern Oklahoma

1st 30 Days,Production

10-MMCF/Day Gas1200 BOPD-53

Gravity650 BWPD

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Oil & WaterStorage Tanks

VaporRecovery Unit

VaporRecovery

TowerProduction

Unit

SalesGas

“cooler”

Sales Gas“Scrubber

”Seperator

6 X 20Horizontal

Heater

N/S Location

FGC SuctionLine

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2 Flash GasCompressor

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CAT3406

215 HP

CAT3306

145 HP

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Dual 3” SuctionLines to FGC

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CAT3306 FGC

CAT3406FGC

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VRT – vapor recovery tower30” diameter x 30’ tall

Cost: $8K - $10K

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VRUCost: $33K

GeneratorCost: $30K

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Enardo ValveModel: 950w/flare arrestor16 oz B.P.Costs: $2000

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Oil Tank

WaterTank

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4” VentLine

to Flare

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PortableGenerator

M.R.W.Dual Inlet Forced Air

FlareCost: $50K w upgrades

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LP Inletfrom Tanks

Flare

HP Inletfrom HTR

Vent

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Fan

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Arrow GeneratorCost: $15-20K

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12’ x 15’300 B Tanks

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Sales LinePressure – 760

PSI

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Sale Gas“cooler”

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South Texas TankTruck Loading VaporRecovery System

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Pressurized LiquidSample Case Study

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Case Study: Pressurized Liquid Sample

Geographical Location: Colony WashSite Name: Javorsky 1-33HPressurized Liquid Sampling Guidance:

Sample Location

Sample Analysis

ProMax SimulationConcept: Material In = Material Out

Recorded data + lab results

Flash factor per geographical location

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Case Study: Pressurized Liquid Sample

Pressurized Liquid Sampling Guidance:Sample Location (port, fittings, installation, etc.),

sample analysis (GPA standards, and lab analysis)

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Well open flows to production unit at 3,100 psi, chocked on20/64 at production unit, PU separator operates at linepressure ranging from 375-600 psi.

Bird EquipmentProduction Unit

Permian 6’x20’, 75 psiHorizontal Heater

Treater

2’x10’ Gas Sales LineScrubber Separator

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All oil from HT is dumped into(and all flashing occurs) at this

12’x25’ 500 bbl tank

4” suctionline to VRU

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VRU-The flash gasrecovered from the oil tankis metered and sold downa low pressure gas sales

lineGM 5.7L

GeneratorPowering VRU

VRU 4” SuctionLine

12 oz.Enardo Valve

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Sample Ports

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Prior to Oil and Waterdumps on Heater

Treater

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Lab Analysis

Labs: CRITICAL to tell them what you arelooking for

i.e. Extended gas / liquid analysis, sulfurs, oxygen,N2/ He, and other contaminants

Lab Flash Gas Analysis to obtain GOR

Where and how samples are pulled – use thepressurized HC liquid sampling guidance

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Lab Analysis

General knowledge:

1.Oil production and richer gases will produce richer andmore flash gases

2.N2 releases before CO2, CO2 before Methane, and onand on, as liquids are flashed to lower pressures

3.Heater Treaters should be operated at 15 to 20 psig, justenough pressure to get into tallest tank

4.VRU Vapors are much more valuable per SCF than gasas BTU is much higher, assuming operations and capitalcan support it

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ProMax Inputs

Data Needed:1.Gas from PU (used to mix in first separator), Gas from

Heater Treater (used to match)

2.Liquid from PU before pressure drop (used to mix in firstseparator- has the absorbed vapors)

3.Liquids from downstream equipment (used to match)

4.Pressure, Temperature, Flow of each stream

5.Ambient Temperature during sampling (helps establishfinal discharge temperature of flash gas compressor-matching)

6.Location and quantity of fuel being used on site

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Javorsky P&ID

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ProMax Wrap-up

Operating Conditions: Highest Heat input atoperation pressure in the Production Unit sendsmax vapors to sales gas, run Heater Treater ashot as possible and as low a pressure aspossible if Flash Compressor to again drivevapors out, …

Flash Compressors: Staged flashing of liquidsback to HT has huge effect on Tank vaporlosses

VRUs, Flares, etc. to reduce vapor losses

Flash Factors develop per Play

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Easy Questions?