Mechanical/Geometrical Skin If a reliable skin value is available from transient well testing, then this value should be directly entered by selecting the “Enter by hand” option. In addition, PROSPER provides 3 methods of estimating skin factor using input parameters such as perforation geometry, depth of damage etc. The required input parameters are often difficult…

## Hysys

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## Lead or Power Screw Critical Speed (N) Formula & Calculator

lead screw critical speed (N) calculator – step by step calculation, formula & solved example problem to find the angular velocity that excites the natural frequency of the power screw in mechanical power transmission. Length between bearing supports L in inches, root or smaller diameter dr & constant C are the key terms of this calculation. In…

## Helical Spring Shear Stress (τ) Calculation

helical linear spring shear stress (τ) calculator – step by step calculation, formula & solved example problem to find the shear stress of the helical linear spring in mechanical engineering. Spring constant Ks, load in Newton F, mean spring diameter D in mm & wire diameter d in mm are the key terms of this calculation….

## Power Screw Efficiency (η) Calculation

power screw efficiency (η) calculator – step by step calculation, formula & solved example problem to find the efficiency of square thread power screw in mechanical engineering for power transmission. Load in Newton F, square thread pitch distance l in mm & torque T in Nm are the key terms of this calculation. Formula For power…

## Square Thread – Torque Required to Minimize Load Formula & Calculator

Torque required to lower load calculator – step by step calculation, formula & solved example problem to find the torque required during raising the load by using the square thread (power screw) in power transmission. Load in Newton F, mean diameter dm, mean collar diameter dc, square thread pitch distance l, coefficient of friction for thread…

## Torque Required to Raise Load Calculator

Square Thread – Torque Required to Raise Load Formula & Calculator Torque required to raise load calculator – step by step calculation, formula & solved example problem to find the torque required during raising the load by using the square thread (power screw) in power transmission. Load in Newton F, mean diameter dm, mean collar diameter…

## Z Factor

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## Liquid Orifice Plate Calculation

Read All Detail – Discussion Check an orifice plate sized for water service as follows: Flowing Pressure = 39.7 psia Flowing Temperature = 80°F Line Size = 4 in Orifice Pressure Drop = 50 inches H2O See Detail…

## Gas Orifice Plate Calculation

Read All Detail – Discussion Gas Orifice Plate Calculation Determine Gas flow rate for the following conditions: Gas flowing temperature = 84 °F Gas flowing pressure = 1014 psig Gas specific gravity = 0.65 H2S and CO2 are…

## Evaluation of Hydrocarbon Saturation – RST

Read All Detail – Discussion Summary RST in Field X (Iraq) The RST is used to evaluate the remaining oil in previously produced zones, locate the water productive zone and look for any bypassed oil behind casing in…

## How to measure fluid saturation behind casing – Enter the Sigma mode.

Read All Detail – Discussion What do you do when you want to measure water saturation behind casing? What if you want to know the current water saturation after years of production? The answer: You run a sigma…