1.Basic ESP data collection

The design of submersible pumping unit, under most conditions,is not difficult task,especially if reliable data is available.Bad data often results in wrong pump designs and costly operation.This vague designs lead pump operates outside the recommended range ,overload or under load motor or draw down the well at rapid rate which may result to well formation damage.

In this occasions the data from nearby are can be used,Guessing that wells from the same producing region with similar characteristics.

The actual ESP selection can be vary comprehensively depending upon the well fluid properties.The three major type comprehensive ESP applications are:

1.High water Cut wells producing fresh water or brine

2.Wells with High GOR (multi phase flow)

3.Wells with high viscous fluids.boh.FBX

Below are the data required for ESP design:

1. Well formation data

a.Casing or line size and weight b.Tubing size,type and thread(condition c.Perforated or open hole interval d.pump setting depth (MD & TVD)

2. Production Data

a. Wellhead tubing pressure b. Wellhead casing pressure c. Present production rate  d. Producing fluid level and/or pump intake pressure e. Static fluid level and/or static bottom-hole pressure f. Datum point g. Bottom-hole temperature h. Desired production rate i. Gas-oil ratio j. Water cut

3. Well Fluid Conditions

a. Specific gravity of water b. Oil API or specific gravity c. Specific gravity of gas d. Bubble-point pressure of gas e. Viscosity of oil f. PVT data

4. Power Sources

a. Available primary voltage b. Frequency c. Power source capabilities

5. Possible Problems

a. Sand b. Deposition c. Corrosion d. Paraffin e. Emulsion  f. Gas g. Temperature

“Junk In, Junk Out”

To efficiently produce the well's potential capabilities and be economical to run, certain data is required:

Minimum: Casing /Tubing Sizes, Pump Depth, Water Cut, Production Rate, etc 

Better: Deviation Survey, Fluid Specific Gravity, Fluid Gradient

Best: Friction Losses, PVT correlations