Related Oil & Gas Terms

• Gravity – api

  The specific gravity or density of oil expressed in terms of a scale devised by the american petroleum institute. the lighter the oil, the greater the gravity; other factors being equal, the higher the api gravity, the better price the oil will bring....

• Heavy crude oil

  Heavy crude oil or extra heavy crude oil is any type of crude oil which does not flow easily. it is referred to as “heavy” because its density or specific gravity is higher than that of light crude oil. heavy crude oil has been defined as any liquid petroleum with an api gravity less than...

• Yield value

  The yield value (commonly called “yield point”) is the resistance to initial flow, or represents the stress required to start fluid movement. this resistance is due to electrical charges located on or near the surfaces of the particles. the values of the yield point and thixotropy, respectively, are measurements of the same fluid properties under...

• Relative density

  1. the ratio of the weight of a given volume of a substance at a given temperature to the weight of an equal volume of a standard substance at the same temperature. for example, if 1 cubic inch of water at 39 degrees f weighs 1 unit and 1 cubic inch of another solid or...

• Specific heat

  The amount of heat required to cause a unit increase in temperature in a unit mass of a substance, expressed as numerically equal to the number of calories needed to raise the temperature of 1 gram of a substance by 1 degree c....