Optimal Design of Progressing Cavity Pumps(PCP)

2006 ◽  
Vol 128 (4) ◽  
pp. 275-279 ◽  
Author(s):  
G. Robello Samuel ◽  
Ken J. Saveth
Keyword(s):  
Optimal Design ◽  
Flow Rate ◽  
Oil Recovery ◽  
High Efficiency ◽  
Maximum Flow ◽  
Operating Conditions ◽  
Window Of Opportunity ◽  
Trial And Error ◽  
Artificial Lift ◽  
Energy Independence

The drive for energy independence has created a window of opportunity for innovations in oil recovery. New artificial lift methods like progressing cavity pumping have been successfully applied to downhole pumping applications. The multilobe pumps are also making inroads into the industry to be used under different operating conditions. Although the design has been mainly based on empirical standards and trial and error modifications, a more phenomenally optimum design of the pump is required to achieve a high efficiency standard. The optimal relationship between the pitch and the diameter of the housing is obtained to achieve a maximum flow rate for multilobe pumps.

scholarly journals Optimasi Intermittent Gas lift Pada Sumur AB-1 Lapangan Brownfield

2018 ◽  
Vol 2 (1) ◽  
pp. 32
Author(s):  
Mia Ferian Helmy
Keyword(s):  
Pressure Gradient ◽  
Production Rate ◽  
Flow Rate ◽  
Oil Recovery ◽  
Gas Injection ◽  
Production Method ◽  
Production Flow ◽  
Injection Volume ◽  
Artificial Lift ◽  
Gas Lift

Gas lift is one of the artificial lift method that has mechanism to decrease the flowing pressure gradient in the pipe or relieving the fluid column inside the tubing by injecting amount of gas into the annulus between casing and tubing. The volume of  injected gas was inversely proportional to decreasing of  flowing  pressure gradient, the more volume of gas injected the smaller the pressure gradient. Increasing flowrate is expected by decreasing pressure gradient, but it does not always obtained when the well is in optimum condition. The increasing of flow rate will not occured even though the volume of injected gas is abundant. Therefore, the precisely design of gas lift included amount of cycle, gas injection volume and oil recovery estimation is needed. At the begining well AB-1 using artificial lift method that was continuos gas lift with PI value assumption about 0.5 STB/D/psi. Along with decreasing of production flow rate dan availability of the gas injection in brownfield, so this well must be analyze to determined the appropriate production method under current well condition. There are two types of gas lift method, continuous and intermittent gas lift. Each type of gas lift has different optimal condition to increase the production rate. The optimum conditions of continuous gaslift are high productivity 0.5 STB/D/psi and minimum production rate 100 BFPD. Otherwise, the intermittent gas lift has limitations PI and production rate which is lower than continuous gas lift.The results of the analysis are Well AB-1 has production rate gain amount 20.75 BFPD from 23 BFPD became 43.75 BFPD with injected gas volume 200 MSCFPD and total cycle 13 cycle/day. This intermittent gas lift design affected gas injection volume efficiency amount 32%.

Performance and Development of a Miniature Rotary Shaft Pump

2005 ◽  
Vol 127 (4) ◽  
pp. 752-760 ◽  
Author(s):  
Danny Blanchard ◽  
Phil Ligrani ◽  
Bruce Gale
Keyword(s):  
Flow Rate ◽  
Pressure Rise ◽  
Electronics Cooling ◽  
Maximum Flow ◽  
Operating Conditions ◽  
Working Fluid ◽  
Hydraulic Efficiency ◽  
Potential Applications ◽  
Total Analysis ◽  
And Performance

The development and performance of a novel miniature pump called the rotary shaft pump (RSP) is described. The impeller is made by boring a 1.168 mm hole in one end of a 2.38 mm dia shaft and cutting slots in the side of the shaft at the bottom of the bored hole such that the metal between the slots defines the impeller blades. The impeller blades and slots are 0.38 mm tall. Several impeller designs are tested over a range of operating conditions. Pump performance characteristics, including pressure rise, hydraulic efficiency, slip factor, and flow rate, are presented for several different pump configurations, with maximum flow rate and pressure rise of 64.9ml∕min and 2.1 kPa, respectively, when the working fluid is water. Potential applications include transport of biomedical fluids, drug delivery, total analysis systems, and electronics cooling.

scholarly journals Improvement of the Efficiency of the Axial-Flow Pump at Part Loads due to Installing Outlet Guide Vanes Mechanism

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Fan Yang ◽  
Hao-ru Zhao ◽  
Chao Liu
Keyword(s):  
Prediction Model ◽  
Flow Rate ◽  
High Efficiency ◽  
Guide Vane ◽  
Axial Flow ◽  
Hydraulic Performance ◽  
Operating Conditions ◽  
Ann Model ◽  
Axial Flow Pump ◽  
Flow Pump

In order to investigate the influence of adjustable outlet guide vane on the hydraulic performance of axial-flow pump at part loads, the axial-flow pump with 7 different outlet guide vane adjustable angles was simulated based on the RNG k-ε turbulent model and Reynolds time-averaged equations. The Vector graphs of airfoil flow were analyzed in the different operating conditions for different adjustable angles of guide vane. BP-ANN prediction model was established about the effect of adjustable outlet guide vane on the hydraulic performance of axial-flow pump based on the numerical results. The effectiveness of prediction model was verified by theoretical analysis and numerical simulation. The results show that, with the adjustable angle of guide vane increasing along clockwise, the high efficiency area moves to the large flow rate direction; otherwise, that moves to the small flow rate direction. The internal flow field of guide vane is improved by adjusting angle, and the flow separation of tail and guide vane inlet ledge are decreased or eliminated, so that the hydraulic efficiency of pumping system will be improved. The prediction accuracy of BP-ANN model is 1%, which can meet the requirement of practical engineering.

Computational Investigation of the Flow Field Inside an Submersible Tubular Pump

2011 ◽  
Author(s):  
Yan Jin ◽  
Chao Liu ◽  
Jiren Zhou ◽  
Fangping Tang
Keyword(s):  
Flow Field ◽  
Flow Rate ◽  
Optimization Design ◽  
High Efficiency ◽  
Simple Algorithm ◽  
Operating Conditions ◽  
Rotating Speed ◽  
Pumping System ◽  
Wide Range ◽  
Engineering Costs

Submersible tubular pump is particularly suitable for ultra-low head (net head less than 2 m) pumping station which can reduce the excavation depth, lower engine room height, simplify hydraulic structure, and save civil engineering costs. Submersible tubular pump with smaller motor unit can reduce the flow resistance. The flow field inside the submersible tubular pump is simulated in a commercial computation fluid dynamics (CFD) code FLUENT. The RNG k-ε turbulent model and SIMPLE algorithm are applied to analyze the full passage of a submersible tubular pump, the performance of pump such as head, shaft power and efficiency are predicted based on the calculation of different operating conditions. The simulations are carried out over a wide range of operating points, from 0.8 of the reference mass flow rate at the best efficiency point (BEP) to the 1.28 of the BEP flow rate at the same rotating speed. For verifying the accuracy and reliability of the calculation results, a model test is conducted. The comparison of simulation results and the experiment data show that the calculation performances are agree with the experiment results in the high efficiency area and large discharge condition, but in the condition of low discharge, it exists deviations between the two results. Compare with the numerical simulation and experiment, which can provide more evidences for the hydraulic performance prediction and optimization design of submersible tubular pump pumping system.

Optimal Design of a Non-Overload Centrifugal Pump

2012 ◽  
Vol 468-471 ◽  
pp. 2357-2363
Author(s):  
Bo Hu ◽  
Shou Qi Yuan ◽  
Wei Gang Lu ◽  
Jian Ping Yuan ◽  
Lei Li
Keyword(s):  
Optimal Design ◽  
Stokes Equations ◽  
Design Method ◽  
Maximum Flow ◽  
Pressure Head ◽  
Operating Conditions ◽  
National Standard ◽  
Pump Efficiency ◽  
Pump Design ◽  
Optimal Scheme

Three experiment factors including outlet blade angle β2, b2 and impeller wrapping angle θ are selected for optimal design of a non-overload pump. Numerical simulation with CFD is employed to reduce the cost and shorten the design period. The time-averaged Navier-Stokes equations of 3D steady flow in the pump are calculated by CFD based on the SST k-ω turbulence model and standard wall function. The structured grids of different qualities are used in one scheme for comparison to confirm that the results are not influenced by the quality of mesh. The optimal scheme is obtained when β2, b2, θ are 20 degrees, 7mm, 170 degrees, respectively. Its pressure head is 89.75m achieving the pump efficiency of 57% at maximum. The performances of NCPs at other working conditions satisfy the requirement of heads and efficiencies from China National Standard. The shaft power reaches to 15kW at 1.5QR (35.5m3/h), showing that the non-overload performance is also significantly improved. The impeller is considered as the optimal scheme and produced for experiments. Experiment data prove that it is effective and reliable to improve a non-overload pump’s performance by maximum flow design method and non-overload pump design method. The results provide a reference for increasing the efficiencies and pressure heads of non-overload pumps at multiple operating conditions.

Technology Demonstration of a Splittered Transonic Rotor With a Downstream Variable Geometry Tandem Stator

2017 ◽  
Author(s):  
Sabine Bauinger ◽  
Anthony J. Gannon ◽  
Garth V. Hobson ◽  
Aaron D. Terrell
Keyword(s):  
Flow Rate ◽  
Maximum Flow ◽  
Operating Conditions ◽  
High Mass ◽  
Test Case ◽  
Variable Geometry ◽  
Compressor Stage ◽  
Transonic Compressor ◽  
Wide Speed Range ◽  
Variable Stator

This paper presents the experimental results of an advanced concept transonic compressor stage with a splittered rotor and a downstream variable geometry tandem stator. Two blisks make up the stator, with the first containing the upstream blades and the second the downstream. The downstream row is fixed while the upstream row is able to rotate about the machine axis. This was found to be a very simple and robust method of adjusting the geometry as it had only one moving part in contrast to the complex mechanisms required to move individual blades within a traditional row. Five different relative positions between the forward and aft blade rows were experimentally investigated in order to find the ideal stator positions for different operating conditions of an engine. It was found that the peak efficiency, maximum flow rate and maximum flow range of the entire stage could be adjusted by moving the single upstream stator blisk. This variable tandem stator configuration could thus eliminate the need for inlet guide vanes (IGV’s) with variable flaps in the first compressor stage, which are typically found in many military engines. This removal of a blade row could lead to lighter and less complex engine. The variable stator concept may also be applicable to the high pressure stages during startup where a high mass flow rate would reduce the need for bleed systems. Results over a wide speed range from subsonic to transonic are presented and the geometry is available upon request as a test case.

Performance and Development of a Miniature Rotary Shaft Pump (RSP)

2004 ◽  
Author(s):  
Daniel B. Blanchard ◽  
Phillip M. Ligrani ◽  
Bruce K. Gale
Keyword(s):  
Flow Rate ◽  
Pressure Rise ◽  
Electronics Cooling ◽  
Maximum Flow ◽  
Operating Conditions ◽  
Working Fluid ◽  
Pump Performance ◽  
Potential Applications ◽  
Total Analysis ◽  
And Performance

The development and performance of a novel miniature pump called the rotary shaft pump (RSP) is described. The impeller is made by boring a hole in one end of a shaft, and cutting slots in the side of the shaft at the bottom of the bored hole, such that the metal between the slots defines the impeller blades. Several impeller designs are tested over a range of operating conditions. Pump performance characteristics, including pressure rise, efficiency, slip factor, and flow rate are presented for several different pump configurations, with maximum flow rate and pressure rise of 64.9ml/min, and 2.1kPa, respectively, when the working fluid is water. Potential applications include transport of biomedical fluids, drug delivery, total analysis systems, and electronics cooling.

scholarly journals A Study of Cloth Seal Leakage Performance Based on Geometry and Pressure Load

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5884
Author(s):  
Erdem Gorgun ◽  
Mahmut Faruk Aksit ◽  
Yahya Dogu
Keyword(s):  
Pressure Drop ◽  
Flow Rate ◽  
Gas Turbines ◽  
Maximum Flow ◽  
Nonlinear Effects ◽  
Experiment Design ◽  
Leakage Rate ◽  
Operating Conditions ◽  
Fractional Factorial ◽  
Screening Experiments

Metal cloth seals have been used increasingly in gas turbines due to their flexibility and superior leakage performance. Leakage performance of a metal cloth seal depends on operating conditions, slot and geometric dimensions. These parameters need to be investigated for the best leakage performance. In this study, pressure drop and critical geometric parameters of typical cloth seal form are investigated with an experimental setup. Slot depth, cloth width, sealing gap, shim thickness, surface roughness, pressure drop, offset and mismatch are selected parameters for the screening experiments. Sixteen experiments were conducted following a two-level Resolution IV fractional factorial experiment design for eight parameters. The results indicated that strong parameters for the leakage performance are pressure drop, cloth width, slot depth and offset. Leakage rate is increased with an increase in slot depth, gap, shim thickness, pressure drop and mismatch. During screening experiments, the experiment with minimum flow rate has 86% lower leakage rate than the experiment with maximum flow rate. For main experiments, a Box-Behnken experiment design is applied to analyze nonlinear effects of four strong parameters on the leakage rate. A closed-form equation is derived based on the data and presented in this study.

scholarly journals Theoretical and Experimental Analysis of Operating Conditions of a Circular Flap Gate for an Automatic Upstream Water Level Control

Water ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2576
Author(s):  
Janusz Kubrak ◽  
Elżbieta Kubrak ◽  
Edmund Kaca ◽  
Adam Kiczko ◽  
Michał Kubrak
Keyword(s):  
Water Level ◽  
Flow Rate ◽  
Water Depth ◽  
Maximum Flow ◽  
Operating Conditions ◽  
Drainage Ditches ◽  
Level Control ◽  
Flow Rates ◽  
Water Head ◽  
Open Position

This article introduces a flow controller for an upstream water head designed for pipe culverts used in drainage ditches or wells. The regulator is applicable to water flow rates in the range of Qmin < Q < Qmax and the water depth H0, exceeding which causes the gate to open. Qmin flow denotes the minimum flow rate that allows water to accumulate upstream of the controller. Above the maximum flow rate Qmax, the gate remains in the open position. In the present study, the position of the regulator’s gate axis was related to the water depth H0 in front of the device. Derived dependencies were verified in hydraulic experiments. The results confirmed the regulator’s usefulness for controlling the water level.

Hydrodynamic Efficiency Improvement of High-Specific-Speed Centrifugal Pump Impeller

2013 ◽  
Vol 467 ◽  
pp. 461-465 ◽  
Author(s):  
Chin Ting Yang
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
High Efficiency ◽  
Maximum Flow ◽  
Performance Measurement System ◽  
Centrifugal Pumps ◽  
Pump Impeller ◽  
Frictional Loss ◽  
Specific Speed

The high-specific-speed centrifugal pumps are very common in industrial factory for transporting fluids all day long. However, oversized pumps with low performance still could meet the purpose of fluid transporting. The aim of this study was to reduce the existed commercial impeller energy consumption by optimizing the performance of impeller through CAE processes. The impeller model was first generated by BladeGen software and analyzed by CFX in Turbo-mode. The optimized model then exported to machine center to cut the precise aluminum mold. A regular sand die casting processes were used to manufacture the impeller. The original pump which only impeller was replaced with the new one was tested with performance measurement system again. The results show that when the mass flow rate between 40-90kg/s the CFD software predicted very well pump heads and efficiencies with experimental data, which was called optimized impeller. But around the minimum and maximum flow rate region, the recirculation flow between blades and frictional loss model used still need further investigation to shrink the difference. Compare to the original impeller, the optimized one had increased efficiency 6% at the mass flow rate of 80kg/s. Also the high efficiency region (nearby of BEP) of the new impeller had broadened 50%. And the maximum mass flow rate increased 13% than the original one.

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