Tag Archives: electric submersible pump

In this article “ Total Dynamic Head Calculation ”, the concept of the dynamic head is further detailed. As discussed in the previous article titled: “Total Dynamic Head (TDH)”, TDH is the sum of three basic components:

1. Net Vertical Lift (NL) = is the net distance where the fluid must be lifted,
2. Tubing Friction Loss (TFL) = Flow disturbance in the tubing string during pumping process,
3. Tubing Head Pressure (THP) = Pressure which the unit must pump against (back pressure caused by choking on well head).

Continue reading →

To properly select the pump, well performance must be estimated. Fundamentally, well performance estimates define what additional energy (i.e., volumetric flow rate and differential pressure or head) must be supplied by the pump to deliver a desired stock tank flow rate (API RP11 S4).

It is common to simplify the procedure by combining or summarizing the additional energy that the pump must supply into a single term, Total Dynamic Head (TDH). TDH is a summation of the net vertical distance fluid must be lifted from an operating fluid level in the well, the frictional pressure drop in the tubing and the desired wellhead pressure.

TDH = HD + HF + HT

Continue reading →