NO FRICTIONAL LOSS PIPESIM FREE

It is essential to determine the percentage of free gas by volume at the pumping conditionsР’В in order to select the proper pump and gas handling device (if required). Therefore, the Productivity Index (PI) inflow performance method will most probably give satisfactory results. LetРІР‚в„ўs calculate, the Pwf at the desired production rate:Р”Р‡rom the Productivity Index equation, Pwf = Pr РІР‚вЂњ Q/PI = 2320.6 РІР‚вЂњ 3500/3.33 = 1269.5 psi.Р”Р„nd PIP = 1269.5 РІР‚вЂњ (1569.8-1160) = 860 psi.Р”Р„t a liquid rate of 3500 bfpd, the PIP is a bit smaller than the bubble point pressure (964 psi). SG is calculated from oil SG and water SG. Pwf = PIP + hydrostatic pressure from pump intake depth to the datum.Р”В«ecause there is both water and oil in the produced fluids, it is necessary to calculate a composite SG of the produced fluids. Pwf is calculated from the pump intake pressure (PIP), hydrostatic pressure and friction loss in the casing annulusР’В between the pump setting depth and the datum point.Р’В In the given example, as the pump is set 290m above the perforations, the friction loss, because of flow of fluid through the annulus from perforations to pump setting depth, is small, as compared to the flowing pressure, and can be neglected. PI=Q/(Pr-Pwf)Р”Р‡irstly, we need to calculate the flowing bottomhole pressure (Pwf). So that, the Productivity Index (PI) inflow performance method will most probably give satisfactory results.

The pump intake pressure (1160 psi) is greater than bubble point pressure (964 psi). It consists on predicting the well inflow performance. The theory behind the production capacity calculations was detailed in the post РІР‚Сњ ESP design РІР‚вЂњ Step 2: Production Capacity РІР‚Сљ. MF1 experiencedР’В frequent starts and stops. Present production rate: 2500 Pump Intake Pressure = 1160 psi This is the simplest type of well for sizing submersible equipment. In this example, a high water cut well is considered. Step 1: Basic Data:Р”Р„s detailed in the article РІР‚Сљ Step 1: Basic data РІР‚Сњ, step 1 of the nine step design procedure is the most important step because all the others design steps will depend on the basic data selected in this step. a number of computer programsР’В are available to automate this process. For more complicated well conditions, such as high GOR, viscous oil, high-temperature wells, etc. This nine step procedure for ESP design is a basic hand-design of simple water and light crude oil.

This article walks through the suggested nine step procedure for selecting and designing an electric submersible pump.

No frictional loss pipesim