Production Site Design Recovery and Processing of VOC Flashing Emissions May 11 th and 12 th , 2011 OIPA Air Emissions Workshops
Production Site DesignRecovery and Processing of VOC Flashing EmissionsMay 11th and 12th, 2011
OIPA Air Emissions Workshops
2
Chesapeake SiteWestern Oklahoma
1st 30 Days,Production
10-MMCF/Day Gas1200 BOPD-53
Gravity650 BWPD
3
4
Oil & WaterStorage Tanks
VaporRecovery Unit
VaporRecovery
TowerProduction
Unit
SalesGas
“cooler”
Sales Gas“Scrubber
”Seperator
6 X 20Horizontal
Heater
N/S Location
FGC SuctionLine
5
2 Flash GasCompressor
s
CAT3406
215 HP
CAT3306
145 HP
6
Dual 3” SuctionLines to FGC
7
CAT3306 FGC
CAT3406FGC
8
VRT – vapor recovery tower30” diameter x 30’ tall
Cost: $8K - $10K
9
VRUCost: $33K
GeneratorCost: $30K
10
Enardo ValveModel: 950w/flare arrestor16 oz B.P.Costs: $2000
11
Oil Tank
WaterTank
12
4” VentLine
to Flare
13
PortableGenerator
M.R.W.Dual Inlet Forced Air
FlareCost: $50K w upgrades
14
LP Inletfrom Tanks
Flare
HP Inletfrom HTR
Vent
15
Fan
16
Arrow GeneratorCost: $15-20K
17
12’ x 15’300 B Tanks
18
Sales LinePressure – 760
PSI
19
20
Sale Gas“cooler”
21
22
South Texas TankTruck Loading VaporRecovery System
23
24
25
26
27
Pressurized LiquidSample Case Study
28
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
29
Case Study: Pressurized Liquid Sample
Pressurized Liquid Sampling Guidance:Sample Location (port, fittings, installation, etc.),
sample analysis (GPA standards, and lab analysis)
30
31
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
32
All oil from HT is dumped into(and all flashing occurs) at this
12’x25’ 500 bbl tank
4” suctionline to VRU
33
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
34
Sample Ports
35
Prior to Oil and Waterdumps on Heater
Treater
36
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
37
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
38
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
39
Javorsky P&ID
40
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
41
Easy Questions?