Tank Battery

Definition - What does Tank Battery mean?

A Tank Battery is a device used to store crude oil which is produced from a well. We can therefore, define a Tank Battery as the number of crude oil storage tanks located near a production site where the crude oil produced from a producing well is stored. Generally Tank Batteries are located near the production site; however, it may differ in other cases. There can be possibilities that an E&P operator owns multiple wells in nearby leases, thus, all the crude oil produced from various leases is brought via pipelines to the place where the Tank Batteries are situated.

Petropedia explains Tank Battery

A Tank Battery is made up of two or more storage tanks which have crude oil storage capacities up to 4 days production. These Tank Batteries are equipped with all the measuring equipment and fireproof equipment. When the crude oil is pumped into the pipeline system for transportation, its volume and API gravity are measured and tested before pumping so as to avoid tethering problems.

The below Figures, 1 and 2 show a typical Tank Battery connection system. All the storage tanks are connected with a pipeline system located directly below a thief hatch, at a distance of 12 inches above the bottom of the storage tanks. Overall the following connections are present:

  • Inlet – The crude oil inlet port.
  • Drain or Outlet – Each storage tank has a drain/outlet port which gets connected to the main pipeline for transportation.
  • Equalizer Line – The purpose of this is to allow the flow of crude oil into the adjacent storage tank once the primary tank gets full.
  • Vents – The purpose of vents is to maintain pressure in the Tank Batteries.

Fig 1.

Fig 2.

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