GASPRO COMPRESSION CORP. Gas Pro BTEX VRU Presentation by: Mustafa Siddiqui – M.Eng., E.I.T.
About us Gaspro Compression Corp. is the leading provider of low horsepower (below 100 HP) gas compressor packages in Canada. Our company was born and raised in Three Hills, Alberta — however in terms of industry positioning, we are anything but “small town.” Being able to adapt our technology to best fit clients’ needs, is one of the many reasons we have evolved into an industry leader. Since 2003, Gaspro has been developing dependable, low maintenance and user friendly compressor packages that surpass industry standards. All our packages are engineered for extended, cost efficient operation and we are continually improving and innovating our products to keep up with the ever changing industry demands
Our applications include: Casing gas compression Gas well compression on oil wells Tank vapor recovery units (VRU) BTEX VRU on glycol dehydrators
CASING GAS COMPRESSION
How casing gas compression works Without a compressor With a compressor Oil Oil Gaspro package Casing gas Tubing Tubing Annulus between casing and Gaspro compressor package oil tubing fills up with reduces the pressure in the Casing Casing annulus, thus allowing more associated gas (often referred as “solution gas” or “casing reservoir products (oil, water, gas” ). If the pressure in the gas etc.) to flow into the well bore annulus gets too high, it holds P low P high back the flow of reservoir products into the well bore. Reservoir Reservoir Formation Formation Well bore Well bore
Rough snapshot of Alberta crude oil batteries sorted by region (Includes heavy oil wells outside AER-designated oil sands area. Does NOT include crude bitumen (examples: Primary bitumen, SAGD, CSS) and oil sands mining) – AER ST60 February 2017 data 100,000 14,393.4 10,000 11,205 8,333.9 7,991.7 7,680 7,532 7,054 5,639 5,452 3,914.7 3,238.8 2,969 2,767.4 2,336.2 1,837.7 1,000 764 163.7 157.2 100 94.9 87.5 78.8 78.9 80.1 76.6 64.7 61.4 57.0 44.2 42.7 43.4 39.1 36 33.8 23.8 19.8 16.9 15.2 15.3 14.4 14.8 10 8.6 1 1.1 1.1 0.5 0.5 0 Bonnyville Drayton Valley Grand Prairie High Level Medicine Hat Midnapore Red Deer St. Albert Wainwright Number of Approx. Oil produced Approx. Gas Approx. Gas Approx. Gas Wells (thousand bpd) Prod. (e3m3/d) Vented (e3m3/d) Flared (e3m3/d)
Alberta Crude oil wells average production 1 (Production is reported on a monthly basis and for several multiwell batteries, hence this is a rough estimation only) – AER ST-60 (February 2017 data) 20000 17,952 18000 16000 14,124 14000 Number of wells 12000 10000 8000 6,703 6000 3,715 4000 1,563 2000 1,210 320 316 303 110 25 28 1 9 0 0-1 2-5 6-10 11-20 21-30 31-40 41-50 51-60 61-99 100-149 150-199 200-249 250-299 300+ Average production per well (Barrels per day)
Gas Pro’s hydraulic compressor
Gas Pro’s hydraulic compressor Low flow rates Higher pressure differential Eliminates the need for a scrubber and an aftercooler Low cost!
SOLVENT VAPOR RECOVERY
Some basic statistics – Feb 2017 Stats Total Alberta oil production: ~ 3.3 million bpd 1 About 1.3 million bpd of thermal bitumen production 2 (Most of which is through SAGD) Solvent extraction technologies are being tested as alternative to SAGD. Gas Pro has provided compressors for recovery of propane solvent and butane solvent pilots. Performance variation can be quite large: Blackmer NG602 Compressor – 30 psig suction, 200 psig discharge, 825 RPM, 13.5 psi atm, 86 F gas temperature at suction Butane Propane Natural Gas (0.65 SG) SCFM 56.6 87 106.2 BHP 12.5 17.6 22.2 Also need to consider liquids dropping out at high pressures 1. http://www.oilsandsmagazine.com/energy-statistics/alberta – February 2017 data – Accessed Nov. 9, 2017 2. http://www.albertacanada.com/files/albertacanada/AOSID_QuarterlyUpdate_Fall2017.pdf – February 2017 data – Accessed Nov. 9, 2017
TANK VAPOR RECOVERY UNITS
Crude oil storage tanks emit methane and other volatile organic compounds that flash off from the oil. Gaspro’s vapor recovery units (VRU) are designed to recover the vapors coming off from the tanks (typically at only a few ounces (oz/in2) of pressure) and then compressing it back into the system. The VRU can provide significant economic and environmental benefits to the client.
BTEX RECOVERY UNITS
Benzene is a carcinogenic compound whose emissions from glycol regenerator still columns at natural gas dehydrator facilities are strictly regulated in Alberta in accordance with Alberta Energy Regulator’s (AER) Directive 039. Gaspro Compression’s BTEX VRU system recovers all emissions from the regenerator still column and reinjects the recovered vapor into the facility
AER Directive 039 – Table 2* Implementation schedule by calendar year to reduced emissions 2014 2015 2016 2017 2018 Distance in metres (m) Emission limit required as of January 1 of the calendar year in tonnes (t) No control or ≤ 100 0.0 a control 101 – 250 0.1 other than an appropriately 251 – 750 1.0 0.5 designed flare or incinerator > 750 3.0 2.0 1.0 After control ≤ 250 1.0 emission limit for an 251 – 750 1.0 appropriately designed flare > 750 3.0 or incinerator * Source: AER Directive 039: Revised Program to Reduce Benzene Emissions from Glycol Dehydrators, January 22, 2013 - Accessed: 03/18/2016 – URL: https://www.aer.ca/documents/directives/Directive039.pdf
GENERIC DEHY PROCESS FLOW DIAGRAM Dry Gas Steam + GHGs + VOCs (including Benzene, Toluene, EthylBenzene & Xylene) Glycol Lean Pump Still Column CONTACTOR Regenerator Fuel gas line Rich Wet Glycol gas Compressor Flash Tank
GASPRO CONDENSER BOX CONTROL SYSTEM Dry Gas GASPRO Steam + GHGs + VOCs Cooler Box (including Benzene, Toluene, EthylBenzene & Xylene) Glycol Uncondensed vapor – Lean Can be vented, flared, incinerated or used in the burner Condensates + GHGs + VOCs Pump Still Column CONTACTOR Regenerator STORAGE TANK Fuel gas line Rich Wet Glycol gas Compressor Flash Tank
GASPRO BTEX VRU CONTROL SYSTEM Dry Gas GASPRO Steam + GHGs + VOCs Cooler Box (including Benzene, Toluene, EthylBenzene & Xylene) Glycol Lean Condensates + GHGs + VOCs Uncondensed vapor Pump Still Column CONTACTOR Regenerator Make up gas Separator Fuel gas line Rich Wet Glycol gas Liquids pump Compressor Flash Tank Gaspro Compressor
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