Estimation of the vapour pressure deficit using noaa avhrr data
Reduction of RVP (Reid Vapour...
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Reduction of RVP (Reid Vapour Pressure) Gas Recapture Systems Ltd (GRS) is pleased to present this technical document and cost estimate, for supplying a temporary heating system for reduction of RVP (Reid Vapour Pressure) and fracturing gellant and breaker chemical additives. The process provides a reduction of RVP (Reid Vapour Pressure) to meet IRP standards. Reid vapor pressure (RVP) is a common measure of the volatility of frac oil. It is defined as the absolute vapor pressure exerted by a liquid at 100 °F (37.8 °C). This preliminary technical response and cost estimate is provided to assist you in completing any economic and feasibility evaluation. (GRS) can address a more rigorous evaluation and scoping phase with equipment layout.
Transcript of Reduction of RVP (Reid Vapour...
Reduction of RVP (Reid Vapour Pressure)
Gas Recapture Systems Ltd (GRS) is pleased to present this technical document and cost estimate, for supplying a temporary heating system for reduction of RVP (Reid Vapour Pressure) and fracturing gellant and breaker chemical additives.
The process provides a reduction of RVP (Reid Vapour Pressure) to meet IRP standards. Reid vapor pressure (RVP) is a common measure of the volatility of frac oil. It is defined as the absolute vapor pressure exerted by a liquid at 100 °F (37.8 °C).
This preliminary technical response and cost estimate is provided to assist you in completing any economic and feasibility evaluation. (GRS) can address a more rigorous evaluation and scoping phase with equipment layout.
Need Practical process to produce a compact On-‐Site treatment, to preheat used frac Oil for reduction of RVP (Reid Vapour Pressure) to as high of temperature as feasible, using bubble tight heater vessel. Feed gas coming from the casing is requiring between 30-‐45psi. Heater temperature set for 35.8°C to 40°C.
Basis : API Gravity = 38° Separator Pressure = 14.7 psi Oil Recycled = 1000 m3 Vapour Emissions Rate = TSTM scf/bbl Distance from 400 bbl tank = 25m BS&W= <0.05% Density=-‐870kg/m3
Frac oil density: Classified as light, according to its measured API gravity.
Light frac oil is defined as having API gravity higher than 31.1 °API (less than 870 kg/m3)
Reduction of RVP (Reid Vapour Pressure) Reduction of fracturing gellant and breaker chemical additives Boiling Point of Liquid @ atmospheric pressure Max oil temp: 35.8 °C to 40°C Pressure: 0-‐14 kpa
Solution (GRS) will supply a temporary heating system package for the reduction of RVP (Reid Vapour Pressure) and also the reduction of fracturing gellant and breaker chemical additives. The equipment comprised of (a) Heater Ptank 15PSI@73m3, (b) 2-‐Mechanical Oil Pumps, (c) Oil Filter Bags Trailer,(d) Piping (e) Light Tower (f) Office We estimate that the solution proposed herein by (GRS) will enable the reduction of RVP (Reid Vapour Pressure) to meet the process conditions listed above.
Summary: The used frac oil is storage in 400 bbls or 62 m3 tanks on location, connected to a manifold. Oil is transfer thru a 3x2” mission pump from the 400bbl tanks. A bubble tight heated pressure production tank is rig in, which is rated for 73m3@15psi. The bubble tight tanks do not require secondary containment (in accordance with AEUB Guide 55) and is a 500,000 BTU burner keeps oil constant temp.
A Bigjoe is in stall at the casing valve with 3/4” hose 25m to the heater scrubber tank, which is located on the bubble tank heater tube.
The casing gas pressure is use to light the burner. The temp is set for 35.8°C for reheating the use frac oil for reduction of RVP (Reid Vapour Pressure)
Once the use frac oil has been transfer from the first 62m3 tanks to the bubble tank, and then the heater is preheated with using casing gas from the well head.
The use frac oil is recircutated from the 3”outlet on the Bubble tank thru a 3x2” mission pump back to the inlet of the bubble tank, as you can see with the layout design. This process will be recircutated and preheated for two-‐three hours for each 62m3 for knocking out reduction of RVP (Reid Vapour Pressure) and fracturing gellant and breaker chemical additives.
Once the use frac oil has been degas, the degas use oil is then transfer thru oil filter bags to catch any solids in the heated oil. Before enter back in the first empty 62m3 holding tank on location thru the 4” vent line on the 400bbl tank. (See equipment layout Design)
The reason is that once the recycle frac oil, enter from the top of the 400bbl tank, thru the vent line, will help to break out more Reid Vapour Pressure falling into the tank.
Then, we start on the second use frac oil 400bbl tank, that is follow over with the same process on till all the use frac oil tanks has been treated to remove the Reid vapour pressure and clean out any solid with the oil filter bags.
The Reid vapour pressure coming off the preheated frac oil is vented out the 3” vent line that is 25m from the bubble heater tank. (See equipment layout Design)
Equipment Needed: 1-‐73m3 @15psi Bubble tight burner oil tank
1-‐3x2” mission transfer pump with power cord
1-‐3x2” mission transfer pump with power cord
1-‐Oil filter bags trailer micron-‐0.03
4-‐2” hoses x 10’ feet long 206 unions
1-‐3”hose x 10’ft long 206 unions
100’ ft Ground cable with ends
100’ ft x3” vent line
6-‐2” swings, 206 unions
2-‐2” check valves with 206 unions
2-‐2” T with 2” union’s fig 206 1-‐ 3/4" hose x 100’ feet long with 1” fitting
3-‐ 4” collars for vent out let on 400bbl tanks
1-‐2 X4 Swede for transfer oil pump
1-‐Office
1-‐Light tower
Fuel is extra
4 men per 24 hrs operators for this project
2 men days / 2 men nights
Sub 4 men-‐
2 trucks -‐Km charge for traveling from Red Deer to location Towing from Red Deer to Location
Any wash out parts or repairs cost plus 20% Test kit, 3 fire ext
30 plastic oil sample-‐1 litres
Utility The above estimates are based on use of equipment that is consistent with industry design standards. It is also assumed that the GRS equipment will be located in close proximity to the client’s processing facilities and shall be operated in a Class 1, Div 2 area.
Path Forward The preliminary planning-‐level information provided in this letter is for general guidance only. If Decca concludes that there is benefits from implementing (GRS) proposed and the solution is sufficient to justify implementation..
Confidentiality The details of this proposal and the information provided herein are considered the confidential property of Gas Recapture System. We respectfully request that you keep any (GRS) information related to this project confidential, and not to communicate these details without (GRS) prior written permission. (GRS) requires that any and all correspondence includes, but not limited to, equipment specifications, engineered drawings or drafts, hardware descriptions, price quotes, and any other information directly or indirectly pertaining to this proposal be kept in the strictest confidence.
Validity The cost estimate provided in this proposal is valid for 15 days from the date of issuance of this letter. Only because company are putting orders in for equipment, the longer we wait, harder to get equipment.
Summary (GRS) appreciates the opportunity to be of service and hopes to add value by Reduction of RVP (Reid Vapour Pressure) and fracturing gellant and breaker chemical additives minimizing. If you have any questions please do not hesitate to contact me at (403) 506-‐0759. Regards, Gas Recapture Systems Ltd Albert Cerenzie President and CEO
Appendix Material Safety Data Sheet (MSDS) Material Safety Data Sheet (MSDS) information must be available for the base oil product being used or stored at the jobsite, and all personnel that may come in contact with the fluid must be trained as to the specific hazards and safe handling practices. Non Water Based Drilling And Completions/Well Servicing Fluids Industry Recommended Practice (IRP) Volume 14 – 2004
Personal Protective Equipment Workers must wear outerwear (coveralls, slicker suits), and hand and eye protection that minimize direct contact with the fluid. Gloves and boots must provide adequate resistance to degradation by the fluid in use. The physical condition of this PPE should be monitored closely and replaced on a frequent basis to reduce skin contact exposure. The use of a fluid with a high aniline point may reduce the degradation and cost of PPE made from elastomer materials when compared to diesel based fluids. The following PPE is required:
Eye Protection Goggles/Safety glasses with side shields must be worn to prevent eye irritation and protection from splashing.
Safety Footwear Steel-‐Toe Boots must be worn to prevent feet injury.
Benefits of the Scoping Study There are a several potential solutions available that would meet the process needs. We believe that before NB can select, commit to, and approve installation; certain engineering issues as listed below must be addressed: ·∙ While the chosen solution can be installed quickly by GRS refinery “best practices” require that a full definition of the project options be prepared and reviewed carefully before proceeding.
The Reid Vapour Pressure extraction process is dependent upon external factors, such as temperature, conditioning aids (usually NaOH), shear, aeration, diluents, and possibly other additives.
Great advantage of having On-‐Site Portable recycle Frac oil treatment process to Preheat Oil to knock out gases and chemical concentrations from used frac oil for purities concentrations for fracture projects.
Preheat use frac Oil to Knock out Reid pressure and Chemical
The common method for measuring vapour pressure is the Reid Vapour pressure (RVP) test. 1. Scope
1.1 This test method covers the use of automated vapour pressure instruments to determine the vapour pressure exerted in vacuum of crude oils. This test method is suitable for testing samples that exert a vapour pressure between 5 and 18 kPa at 37.8°C at vapour-‐liquid ratios from 4:1 to 0.02:1 (X = 4 to 0.02).
Note 1—This test method is suitable for the determination of the vapour pressure of crude oils at temperatures from 0 to 100°C and pressures up to 18 kPa, but the precision and bias statements u
1.2 This test method allows the determination of vapour pressure for crude oil samples having pour points above 0°C.
The RVP is actually more of a gauge pressure than an absolute pressure due to the way the test is performed. The sample is preconditioned by flashing at 33F and atmospheric pressure to drive off the light components. Then air is added to the test vessel, the vessel is closed, and the RVP is the gauge pressure caused by vaporization while heating the sample from 33F to 100F. ProMax actually performs the preconditioning calculations by flashing at 33F, adding air, and heating to 100F. So there should be some vaporization at 100F from a 12 RVP sample that is
flashed at atmospheric pressure. If you are mainly concerned about vapor in the storage tank, you should continue to use the TVP specification for the condensate. The RVP test is designed more for oils and gasoline than for condensate anyway. I would also like to note that since the TVP is just the bubble point of the liquid at 100F, there will be a greater difference between the RVP and TVP for a condensate than for an oil or gasoline since the condensate would be more likely to have lighter components in it than the oil or gasoline.
The volume of gas vapor coming off a storage tank dependson many factors. Lighter crude oils (API gravity>36°) flash more hydrocarbon vapors than heavier crudes (APIgravity<36°). In storage tanks where the oil is frequently cycled and the overall throughput is high, more “working vapors” will be released than in tanks with low throughput and where the oil is held for longer periods and allowed to“weather.” Finally, the operating temperature and pressure of oil in the vessel dumping into the tank will affect the volume of flashed gases coming out of the oil.
