by ROCKMAN » Tue 08 Jul 2014, 01:53:13
Graeme ole buddy I'm going to have to back you up on this one...and then some. You don't need a stabilizer to reduce the volatile nature of the oil. Every one of my wells producing an amount of liquid hydrocarbon, even when the production is primarily NG, goes thru a "separator" at the wellhead. A relatively simple and fairly cheap piece of production equipment. And I do it for a practical reason: the folks hauling my oil from the well, either via tank truck or pipeline, have max spec requirements which include volatile organic components (VOC's) and even water. That's why I was surprised when I started reading about how much VOC's they were carrying with the Bakken oil. I can only assume that the lack of gathering systems led to this procedure. They don't want to flare those VOC's and lose valuable production so haul them with the oil. As I've point out before no oil, even the Bakken, is explosive. Grain dust in the air is much more prone to explode. And so are VOC's.
BTW: wanna know what's a much greater explosion risk then stabilized oil? It's compressed AIR. There are some oil field EOR projects that require injecting high pressure AIR. Allow that AIR to come into contact with a small amount of hydrocarbon, like some lube oil in a piece of equipment, and BOOM! And equipment and perhaps a few lives are lost.
Fuel-Air Explosives [FAE] disperse an aerosol cloud of fuel which is ignited by an embedded detonator to produce an explosion. The fuel-air bomb is one of the most well-known types of thermobaric weapons which used a gas-enhanced explosive mechanism, often propane of a combination of VOC's. The rapidly expanding wave front due to overpressure flattens all objects within close proximity of the epicenter of the aerosol fuel cloud, and produces debilitating damage well beyond the flattened area. The main destructive force of FAE is high overpressure, useful against soft targets such as minefields, armored vehicles, aircraft parked in the open, and bunkers.
Fuel/air explosive represent the military application of the vapor cloud explosions and dust explosions accidents that have long bedeviled a variety of industries. Accidental vapor cloud explosion hazards are of great concern to the refining and chemical processing industry, and a number of catastrophic explosion accidents have had significant consequences in terms of injury, property damage, business interruption, loss of goodwill, and environmental impact.
And every year, many serious explosions and fires occur in industrial plants as a result of dust. Many materials form dust clouds that can easily ignite and explode, injuring personnel and damaging plant. This is a well-known phenomenon in the coal mining, grain storage, and the woodworking and paper industries. Many miners have been killed and injured and massive production losses have resulted from coal dust explosions in underground coal mining operations. Of the 129 grain dust explosions that occurred nationwide between 1987 and 1997, about half involved corn. Eleven were caused by wheat dust and 10 by dust from soybeans. Billions of tiny, highly combustible particles of grain are generated by grain kernels rubbing together as they move along conveyer belts and shifted between bins. Inside the enclosed chambers, those particles rise in a cloud. When the dust gets in with the right mixture of oxygen and comes in contact with a spark or even an overheated bearing on a conveyer belt, it is extremely explosive.
Almost all organic material in the form of a dust cloud will ignite at temperatures below 500 oC - approximately the same temperature as a newly extinguished match. Cotton, plastics and foodstuffs such as sugar, flour and cocoa can also, under the right conditions, act as explosives. In order for a dust explosion to take place, the dust particles must be of a certain size and the amount of finely granulated material per unit of volume must lie within certain critical values. There is generally a direct correlation between particle size and explosive hazard. The smaller the particle, the more reactive the dust. As the materials become smaller, they disperse and remain suspended more easily, increasing the potential for ignition and propagation of the reaction. Industrial explosion prevention measures include, where possible, providing nitrogen gas purging to ensure that the oxygen concentration is kept below that required for combustion.
For vapor cloud explosion there is a minimum ratio of fuel vapor to air below which ignition will not occur. Alternately, there is also a maximum ratio of fuel vapor to air, at which ignition will not occur. These limits are termed the lower and upper explosive limits. For gasoline vapor, the explosive range is from 1.3 to 6.0% vapor to air, and for methane this range is 5 to 15%. Many parameters contribute to the potential damage from a vapor cloud explosion, including the mass and type of material released, the strength of ignition source, the nature of the release event (e.g., turbulent jet release), and turbulence induced in the cloud (e.g., from ambient obstructions).