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Level instrumentation determines the height of liquids by measuring the position of a gas/liquid or liquid/liquid interface within the vessel or tank. Such interfaces include oil/gas, oil/water, condensate/water, glycol/condensate, etc. Local indication (LI) includes sight glasses which show the liquid level directly through a vertical glass ...
An external floating roof tank is a storage tank commonly used to store large quantities of petroleum products such as crude oil or condensate. It consists of an open- topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid. The roof rises and falls with the liquid level in the tank. [1]
Current volume of a product stored in a tank can be calculated using a tank capacity table (sometimes called "tank calibration table") and current levels and temperatures of a product in a tank. Tank capacity table stores data about level and appropriate volume in a tank and have a very high impact on overall accuracy of volume calculation.
Tracers are used in the oil industry in order to qualitatively or quantitatively gauge how fluid flows through the reservoir, [1] as well as being a useful tool for estimating residual oil saturation. Tracers can be used in either interwell tests or single well tests. [2]
If the pores are partially filled with gas or oil, which are resistant to the passage of electric current, the bulk formation resistance is higher than for water filled pores. For the sake of a convenient comparison from measurement to measurement, the electrical logging tools measure the resistance of a cubic meter of formation.
All unrefined crude oil has some water entrained within it. During transportation by ship, separation occurs naturally and water collects at the base of the tank below the oil, this is known as free water (FW). [4] Sales contracts for crude oil will typically specify the BS&W and FW to ensure the cargo meets quality standards.
The dead, stabilized crude flows to tanks for storage or to a pipeline for transport to customers such as an oil refinery. [3] [4] [7] The stabilization tower may typically operate at approximately 50 to 200 psig (345 – 1378 kPa). [5] Where the crude oil contains high levels of hydrogen sulphide (H 2 S) a sour
A Lease Automatic Custody Transfer unit or LACT unit measures the net volume and quality of liquid hydrocarbons.A LACT unit measures volumes in the range of 100 to 7,000 barrels (16 to 1,100 m 3) of oil per day.(*LACTs can transfer/measure more than 7000 bbls/day) This system provides for the automatic measurement, sampling, and transfer of oil from the lease location into a pipeline.