Basic sediment and water

Or S W. Basic sediment and water. The paraffin, sediments, and salt water impurities in crude and oil fuels that need to be removed prior to further processing or use. 

BS W, see Basic sediment and water Btu heat content, of fuels 670... 

AVT Barg BD BDHR BF BOF BOOM BOP BS W BSI BTA Btu/lb BW BWR BX CA CANDUR CDI CFH CFR CHA CHF CHZ Cl CIP CMC CMC CMC COC All-Volatile treatment bar (pressure), gravity blowdown blowdown and heat recovery system blast furnace basic oxygen furnace boiler build, own, operate, maintain balance of plant basic sediment and water British Standards Institution benzotriazole British thermal unit(s) per pound boiler water boiling water reactor base-exchange water softener cellulose acetate Canadian deuterium reactor continuous deionization critical heat flux Code of Federal Regulations cyclohexylamine critical heat-flux carbohydrazide cast iron boiler clean-in-place carboxymethylcellulose (sodium) carboxy-methylcellulose critical miscelle concentration cycle of concentration... 

The produced fluids and gases are typically directed into separation vessels. Under the influence of gravity, pressure, heat, retention times, and sometimes electrical fields, separation of the various phases of gas, oil, and water occurs so that they can be drawn off in separate streams. Suspended solids such as sediment and salt will also be removed. Deadly hydrogen sulfide (H2S), is sometimes also encountered, which is extracted simultaneously with the petroleum production. Crude oil containing H2S can be shipped by pipeline and used as a refinery feed but it is undesirable for tanker or long pipeline transport. The normal commercial concentration of impurities in crude oil sales is usually less than 0.5% BS W (Basic Sediment and Water) and 10 Ptb (Pounds of salt per 1,000 barrels of oil). The produced liquids and gases are then transported to a gas plant or refinery by truck, railroad tank car, ship, or pipeline. Large oil field areas normally have direct outlets to major, common-carrier pipelines. 

Basic sediment and water (bs w, bsw) the material that collects in the bottom of storage tanks, nsnally composed of oil, water, and foreign matter also called bottoms bottom settlings. 

Crude oil specifications may be either for offshore tanker loading or for delivery to an oil pipeline at the platform. Crude oil specifications are usually defined relatively simply, through limitations cn vapor pressure and on BS W (basic sediment and water) content. BSMf la normally limited to a nominal percentage, such as 0.5X, and meeting this specification is outside the scope of this paper. The oil-gas separation system in Dost cases does not significantly affect whether or not the oil will meet the BSAW specification, since for those oils where this is a problem special emulsion treating is required independent cf the oil-gas separation system. 

Pretreatment. Minimizing the degree of oil contamination in produced water starts with the crude oil emulsion treating system. It is possible to economically operate an emulsion treating system to produce a low bs w. (basic sediment and water) oil at the expense of exceptionally oily water. 

Bottoms the liquid which collects in the bottom of a vessel (tower bottoms, tank bottoms) either during distillation also the deposit or sediment formed during storage of petroleum or a petroleum product see also Residuum and Basic sediment and water. 

Any kind of dispersion that was useful in the reservoir may be, or may become, an undesirable dispersion when produced at a well-head. This could include used drilling fluid that has returned to the surface, conventional oil production that occurs in the form of a W/O emulsion, or foam from an enhanced oil-recovery process. These can present some immediate handling, process control, and storage problems. In addition, pipeline and refinery specifications place severe limitations on the water, solids, and salt contents of oil they will accept in order to avoid corrosion, catalyst poisoning, and process-upset problems. For pipeline transportation, an oil must usually contain less than 0.5% basic sediment and water (BS W). 

In general, emulsion tests range from simple identifications of emulsion presence and volume to detailed component analyses. The term frequently refers simply to the determination of sediments in an emulsion or oil sample. See Basic Sediment and Water. 

Demulsifier that can be used to enhance the separation of oil from water and solids, in an emulsion, in the centrifuge test for determining basic sediment and water (BS W). Also termed slugging compound . 

An ideal sample for bottle testing (discussed in the next section) is a stable composite emulsion containing 30% water. When a composite sample is not suitable, as evidenced by a lack of stability, chemical contamination, or low water cut (content), a composite of several wellhead samples must be used. [ Cut refers to the process of determining the BS W (basic sediment and water) content of the oil phase in a sample of produced fluid. Cuts can be taken from the top, middle, or interface of the oil phase.]... 

Basic Sediment and Water That portion of solids and aqueous solution in an emulsion that separates on standing, or is separated by centrifuging, in a standardized test method. Basic sediment may contain emulsified oil as well. Also referred to as BS W, BSW, bottom settlings and water, or bottom solids and water. 

Bottom Settlings and Water See Basic Sediment and Water. 

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