Water Treatment for Oil and Gas Industry - Broucher

AquaSwiss AG Solutions for desalination challenges using AquaSwiss technologies Company Background 1. Swiss Company • Owned by Dutch Larive group (www.larive.com) with 3 decades of experience in technology business • Acquired market leading MED desalination technologies in 2008 • located in Canton of Thurgau, 20 min from Zurich airport • Swiss/ European quality, engineering reliability • Regional offices in Dubai, Dammam, Kuwait and Muscat 2. AS desalination design • Technology Center in Switzerland • Industry Leading Expertise 3. Technology References world-wide • Dozens of references in thermal and membrane • Logistically and technically diverse environments 4. Financially Strong • can take on mega sized projects Technologies & Solutions of AquaSwiss 1. Seawater Desalination via Reverse Osmosis – SWRO • 1000 – 100,000 m³/d capacity • Lowest per m³ - cost • Experience in developing BOO / BOT models 2. Thermal Desalination via Mechanical Vapor Compression – MVC • Plug and play electricity driven • Capacity 200 – 4,000 m³/d • warranty in core desalination equipment • High reliability and low maintenance 3. Thermal Desalination via Multi Effect Distillation – MED • Capacity 2,000 – 200,000 m³/d • warranty in core desalination equipment 4. Unique solutions for • high salinity (100,000 ppm) • Red Tide problems Technologies & Solutions of AquaSwiss Technologies for Oil & Gas Core AS Desal Technol. Core AS Desal Technol. Core AS Desal Technol. Pre- treat ment Pre- treat ment Pre- treat ment Post- treat ment Post- treat ment Post- treat ment Produced Formation Water Water for Injection Water for Steam High temperature High salinity High oil concentration High boron concentration .... Usable Water Demin water Drilling water Potable water .... Aquifer Sea water .... Injection water Boiler feed water Aquifer Sea water Produced formation water High Boron Content Not treatable By RO B = 4.4 mg/l Si = 4 mg/l TDS < 6,000 ppm Oil & Gas Solution of AquaSwiss Conclusion: • Low salinity water, brackish water type composition • High Temperature • Various cations in concentration higher than typical seawater • Hence RO technology not suitable • Thermal treatment is technically feasible & cost effective Solution: • MVC thermal treatment • Driven by electricity • Ready installed, maintenance through AS on a BOO model • Water sale at competitive prices • Converting water for discharge into water for use at costs less than disposal cost Multi Effect Distillation - MED - Perfect solution if steam is available - 1. Can operate on very low pressure steam • Waste steam as low as 0.5 bar and 80deg C 2. High Efficiency • Ability to produce GORs (Product to steam ratio) of 16 or more • Low electricity consumption 1.4kwh/ m3 3. Unique designs • Acquired 6 decades of R&D experience • Units in US (Caribbean Islands) running for 3 decades • Installed capacity per units 25,000 m3/d; 30,000+ possible • unique proven construction materials • Significant cost advantage through CAPEX, steam and electricity savings. AquaSwiss MED Uniqeness AquaSwiss MED internal Mechanical Vapor Compression - MVC - Perfect solution if no steam is available – 1. Lowest Cost (CAPEX) MVC units • Sizes up to 4000 m3/day from a single unit • Clustering of multiple single units 2. Highest Efficiency in electricity consumption • Low carbon foot print and electricity consumption ~ 8kWh/ m3 3. Unique designs • Plug n Play • Units in US (Caribbean Islands) running for 3 decades • Unique proven construction materials • Significant cost advantage through CAPEX, and electricity savings. 4. High Reliability • Ideal for refineries, industrial areas • Low maintenance and high reliability AquaSwiss MVC Uniqueness MVC cross section Technological References MVC Vialco, St. Croix. Caribbean 2 x MVC-1,250 m3/d Sarlux, Sardegna, Italy 6 x MVC - 2,880 m3/d Mejillones, Chile MVC-760 Nueva Ventanas, Chile 2 x MVC-1200 High salinity and process improvement approach for Oil field waters Salinity a barrier in desalination Beyond 50,000 ppm salinity • Reverse Osmosis hits a barrier due to Osmotic Pressure Limits • Thermal Units have scale problems • Crystallizers work but at a very heavy energy price 1. Nanofiltration + MVC/ MED • For feed salinities up to 80,000ppm (like cooling water blow down) • Partial or complete NF treatment of evaporator feed • Drastic reduction in CaSO4 scaling • Higher top brine temperature and yield of the evaporator plant • Capacity of an existing plant can be increased by 50% with the use of NF • With partner company (LET) Leon Awerbach’s patented designs 2. Zero Liquid Discharge NF+MVC/ MED+ evaporation towards a ZLD solution High Salinity Solutions coupled with NF • Product water at 5ppm salinity • Expected recovery factor 55 to 60% • Cost of water production ~ $1/ m3 for 1000 m3/ day ? ( including electricity costs) ? Over a warranted 20 year life-span of the desalination units • Scalable to bigger sizes and lower per m3 production costs High Salinity Solutions coupled with NF - results: More Oil & Gas Solutions Oil Production 22 Production Well Separation Tank 500-5,000 ppm Oil Oil Treatment Water Treatment 50%-90% Water SAGD (Steam Assisted Gravity Drainage Produced Water Industrial Waste Water Complexity (Challenges) Oil & Grease 10-500 PPM Inorganic – Silica SiO2 : 400 ppm – Calcium Ca++ : 600 ppm – Magnesium Mg++ 2000 ppm – Alkalinity : 10,000 ppm – TDS : 100-250,000 ppm – Chlorides : 70,000 ppm Organic – COD 2,000 ppm – BOD 500 ppm Volatile – H2S 50 ppm – NH4+ 200 ppm 23 Produced Water Treatment 24 500-5,000 ppm Oil 50ppm Oil Sludge Surface Disposal ? Heat Recovery Steam Reinjection for Oil Production DAF / IGF MVC Nutshell Filters 1-2ppm Oil 1-2ppm Oil Clarifier Cooling Towers – WasteWater Reverse Osmosis and thermal solutions reduce cooling tower water consumption Cooling Towers WasteWater RO first stage RO second stage Cooling tower Clarifier RO MVC Feed 27,100 m3/day TDS 400 ppm SiO2 20 ppm Feed to CT 28,540 m3/day TDS 10 ppm Vapor 26,640 m3/day RO reject 2,700 m3/day TDS 4,000 ppm SiO2 200 ppm Mg 100 ppm Ca 280 ppm 4,140 m3/day TDS 10 ppm 24,400 m3/day TDS 10 ppm RO reject 460 m3/day TDS 24,010 ppm Crystallizer Crystal slurry 16 m3/day TDS 700,000 ppm Feed to Crystallizer 100 m3/day TDS 110,450 ppm Distilled water 444 m3/day 84 m3/day Sludge RO second stage reject Filter 360 m3/day CT blow-down 1,900 m3/day TDS 150 ppm 4,600 m3/day TDS 2,410 ppm References Technological References MED India – MED – 160,000 m3/d China - MED – 120,000 m3/d Technological References MVC Vialco, St. Croix. Caribbean 2 x MVC-1,250 m3/d Sarlux, Sardegna, Italy 6 x MVC - 2,880 m3/d Technological References RO RO Assembly HP Pumps + Energy Recovery Turbines Cyprus – SWRO – 65,000 m3/d Technological References