دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a lower toxicity weighting agent for brine.

a lower toxicity (than Zinc) weighting agent for higher density brines.

n pi: the limits (based on time of exposure, concentration of material, means of contact, and material toxicity) of worker exposure to hazardous materials without ill effect. Exceeding exposure limits set for various materials can result in temporary health problems, chronic illness, acute illness, or death.

n: (EHS) 1. chemical determined by the EPA to be extremely hazardous to a community during an emergency spill or release as a result of its toxicity and physical or chemical properties. 2. (under SARA) a substance listed in appendixes A and B of 40 CPR 355.

one of several low damage, low toxicity, normally high cost brine for special applications. May be one of several formation compounds.

n: 1. the part of a breathing medium, such as helium, that serves as a transport for oxygen and is DOl used by the body as a life-support agent. Its purpose is to dilute the flow of oxygen to the lungs, thereby preventing oxygen toxicity. 2. in chemistry, gases that have a fined outer electron shell and thus do DOl easily react with other substances. Examples are helium, argon, neon, and xenon.

n: the process of disking, or tilling. low-toxicity wastes into surface soil;land farming.

low toxicity oil based mud.

n: the semisolid, gel-like masses of water-in-oil emulsions that form from heavier crude oils after a spill. Sometimes called chocolate mousse." The masses may contain up to 80% water and are more viscous than the component oil. Mousse weathers slowly, with the oil retaining its initial toxicity, and may become tar balls that float at or near the sea surface and strand on beaches. The transport of mousse and tar balls can increase the area and duration over which a spill is felt.

a species of shrimp used to test toxicity of chemicals in sea water.