Download or read book Experimental Analysis and Simulation of Progressing Cavity Pump Performance in Single phase Flow Liquid Condition written by Hai Ha Tu and published by . This book was released on 2015 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Experimental Examination of a Progressing Cavity Pump Operating at Very High Gas Volume Fractions written by Michael W. Glier and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The progressing cavity pump is a type of positive displacement pump that is capable of moving nearly any fluid. This type of pump transports fluids in a series of discrete cavities formed by the helical geometries of its rigid rotor and elastomeric stator. With appropriate materials for the rotor and stator, this pump can move combinations of liquids, suspended solids, and gasses equally well. Because of its versatility, the progressing cavity pump is widely used in the oil industry to transport mixtures of oil, water, and sediment; this investigation was prompted by a desire to extend the use of progressing cavity pumps to wet gas pumping applications. One of the progressing cavity pump's limitations is that the friction between the rotor and stator can generate enough heat to damage the rotor if the pump is not lubricated and cooled by the process fluid. Conventional wisdom dictates that this type of pump will overheat if it pumps only gas, with no liquid in the process fluid. If a progressing cavity pump is used to boost the output from a wet gas well, it could potentially be damaged if the well's output is too dry for an extended period of time. This project seeks to determine how a progressing cavity pump behaves when operating at gas volume fractions between 0.90 and 0.98. A progressing cavity pump manufactured by seepex, model no. BN 130-12, is tested at half and full speed using air-water mixtures with gas volume fractions of 0.90, 0.92, 0.94, 0.96, and 0.98. The pump's inlet and outlet conditions are controlled to produce suction pressures of 15, 30, and 45 psi and outlet pressures 0, 30, 60, 90, 120, and 150 psi higher than the inlet pressure. A series of thermocouples, pressure transducers, and turbine flow meters measures the pump's inlet and outlet conditions, the flow rates of water and air entering the pump, and pressures and temperatures at four positions within the pump's stator. Over all test conditions, the maximum recorded temperature of the pump stator did not exceed the maximum safe rubber temperature specified by the manufacturer. The pump0́9s flow rate is independent of both the fluid's gas volume fraction and the pressure difference across the pump, but it increases slightly with the pump's suction pressure. The pump's mechanical load, however, is dependent only on the pressure difference across the pump and increases linearly with that parameter. Pressure measurements within the stator demonstrated that the leakage between the pump's cavities increases with the fluids gas volume fraction, indicating that liquid inside the pump improves its sealing capability. However, those same measurements failed to detect any appreciable leakage between the two pressure taps nearest the pump's inlet. This last observation suggests that the pump could be shortened by as much as 25 percent without losing any performance in the range of tested conditions; shortening the pump should increase its efficiency by decreasing its frictional mechanical load.

Download or read book Performance Evaluation and CFD Simulation of Multiphase Twin Screw Pumps written by Abhay Patil and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Twin-screw pumps are economical alternatives to the conventional multiphase system and are increasingly used in the oil and gas industry due to their versatility in transferring the multiphase mixture with varying Gas Void Fraction (GVF). Present work focuses on the experimental and numerical analysis of twin-screw pumps for different operating conditions. Experimental evaluation aims to understand steady state and transient behavior of twin-screw pumps. Detailed steady state evaluation helped form better understanding of twin-screw pumps under different operating conditions. A comparative study of twin-screw pumps and compressors contradicted the common belief that compressor efficiency is better than the efficiency of twin-screw pumps. Transient analysis at high GVF helped incorporate necessary changes in the design of sealflush recirculation loop to improve the efficiency of the pump. The effect of viscosity of the sealflush fluid at high GVF on pump performance was studied. Volumetric efficiency was found to be decreased with increase in viscosity. Flow visualization was aimed to characterize phase distribution along cavities and clearances at low to high GVF. Dynamic pressure variation was studied along the axis of the screw which helped correlate the GVF, velocity and pressure distribution. Complicated fluid flow behavior due to enclosed fluid pockets and interconnecting clearances makes it difficult to numerically simulate the pump. Hence design optimization and performance prediction incorporates only analytical approach and experimental evaluation. Current work represents an attempt to numerically simulate a multiphase twin-screw pump as a whole. Single phase 3D CFD simulation was performed for different pressure rise. The pressure and velocity profile agreed well with previous studies. Results are validated using an analytical approach as well as experimental data. A two-phase CFD simulation was performed for 50% GVF. An Eulerian approach was employed to evaluate multiphase flow behavior. Pressure, velocity, temperature and GVF distributions were successfully predicted using CFD simulation. Bubble size was found to be most dominant parameter, significantly affecting phase separation and leakage flow rate. Better phase separation was realized with increased bubble size, which resulted in decrease in leakage flow rate. CFD results agreed well with experimental data for the bubble size higher than 0.08 mm. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/150982

Download or read book Gulf Pump Guides Progressing Cavity Pumps Downhole Pumps and Mudmotors written by Lev Nelik and published by Elsevier. This book was released on 2013-11-25 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by one of the world’s foremost authorities on pumps, this first volume in Gulf Publishing Company’s Gulf Pump Guides series covers the design, application and troubleshooting for progressing cavity pumps, downhole pumps and mudmotors. There is no other volume offering a more comprehensive, easy-to-understand and hands-on coverage of these types of pumps. As they become more and more widely used in the petrochemical industry and other industries, knowledge of their design and application will become increasingly more important for the engineer.

Download or read book Progressing Cavity Pumps written by Henri Cholet and published by Editions TECHNIP. This book was released on 1997 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The progressing cavity pump is a recent innovation in petroleum production. It rapidly gained an important place in the production of heavy oils containing gas. It has now been confirmed as very efficient for the production of large flow rates of light and abrasive oils. Driven by rod strings from the surface, it is a simple, rugged and cheap equipment. The aim of this book is to provide clear and condensed information related to the principles, qualities and performances of this system. This book is intended to provide the choice criteria of a progressing cavity pump and the operational conditions for its implementation by technicians and field development managers.Contents: 1. Principle and general description of the progressing cavity pump. 2. PCP characteristics. 3. Selection of a PCP. 4. Presence of gas at the pump inlet. 5. Driving from surface of PCP. 6. Installation, operation and maintenance of PCP. 7. An economical completion with the insert pump. 8. The electrical submersible PCP. Bibliography. Index.

Download or read book Investigation of Flow Behavior Inside Ejector Pumps Using Finite Difference Technique written by Xiaowan Shan and published by . This book was released on 2012 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete numerical model has been developed to characterize the performance under different flow conditions. Finite Difference-based method was used to analyze and simulate flow behavior inside ejector pumps for both single phase and dual-phase fluid flow. Single phase model of ejector pump only has one fluid as inputs and its performance is well understood. The behavior of a single phase flow inside ejector pumps have been investigated both analytically and experimentally. Dual phase flow got very few attentions from past researchers. The present work addresses these problems numerically using Finite Difference Technique. Both single and dual phase flow are investigated for comparison. Finally experimental verification of the developed numerical methods is done on an experimental rig developed at our systems Engineering Laboratory. The tests will under different input pressures in order to characterize ejector pump performance. Results obtained numerically for single phase model have been compared with experimental data obtained in separate study at MU. The predicted pressure distribution within the ejector pump and performance curves matches the experimentally observed ones. Results obtained numerically for dual phase model were effectively used for prediction of energy, pressure and velocity changes through the ejector.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1986 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.

Download or read book Design Tools and Mechanisms for Progressive Cavity Pumps written by Kevin Patrick Simon and published by . This book was released on 2019 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents tools to design progressive cavity pumps (PCPs), with an emphasis on low-viscosity fluids. These models indicate that high speed operation can increase sealing performance, decrease pump size, and eliminate gear-reductions. New models for estimating both laminar and turbulent internal flow and shear losses in these pumps are presented. The new models are capable of estimating pump performance 1000x faster than traditional simulation methods, and do not require empirical calibration, making them 'designer-ready'. A proof-of-concept turbulent PCP was designed using these models. Its volumetric efficiency is within 20% of predicted values. This thesis also presents a novel one degree-of-freedom hypocycloidal bearing to constrain the motion of the rotor for increased performance and control. 3 different bearing topologies have been developed: roller, rail, and flexural. An experimental PCP concept with integrated hypocycloidal rail bearings was developed and tested with efficiencies as high as 45%. Experimental data are compared with a new lubrication theory model which accounts for rotor motion, rotor geometric error, and stator geometric error. The experimental and theoretical results show strong agreement, proving that low-order lubrication theory models are accurate simulation tools. Additionally, performance results from the rail bearing pump and first-order analysis inspire new scaling laws for connecting the volumetric and mechanical efficiency of PCPs. These scaling laws show strong agreement in both turbulent and laminar flows. A new generation of PCPs has the potential to transform irrigation, water purification, oil-sand extraction, among other applications. The new tools required to create these PCPs also have strong implications for how traditional PCPs are designed.

Download or read book Experimental Analysis of Pressure Variation Flow Conditions and Component Losses in a Single Stage Centrifugal Pump Fitted with Fixed Guide Vanes written by J. C. Grassie and published by . This book was released on 1945 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solid Liquid Two Phase Flow in Centrifugal Pump written by Zuchao Zhu and published by Springer. This book was released on 2024-05-05 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book conducts a systematic study on internal flow characteristics and performance of centrifugal pump for solid–liquid mixed transportation. First, the applicability of the computational model for two-phase flow is analyzed. Then the relationship between the two-phase flow characteristics and wall wear in the pipeline is revealed. And the flow characteristics in centrifugal pumps are analyzed in relation to conveying performance and wall wear. Finally, the engineering application calculation of the mixed transportation pump with different impeller structures is carried out. The target audience of this book is researchers who perform calculations and engineering applications of solid–liquid two-phase pumps. This book considers the influence of the particle size on the force magnitude of the particles and analyzes the applicability of different solid–liquid two-phase calculation models. Considering the different motion trajectories of particles colliding with dry wall, wet wall, stationary wall, and moving wall, visual experiments are used to study the collision rebound model of different walls. The collision rebound model is applied to the numerical simulation of solid–liquid mixed transport.

Download or read book Fundamentals of Multiphase Flow written by Christopher E. Brennen and published by Cambridge University Press. This book was released on 2005-04-18 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher Description

Download or read book A Theoretical and Experimental Investigation of Single Phase Flow Through a Small Centrifugal Pump in Three Quadrants of Operation written by Lee Charles Cadwallader and published by . This book was released on 1983 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluid Dynamic and Performance Behavior of Multiphase Progressive Cavity Pumps written by Shankar Bhaskaran Narayanan and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: It is common for an oil well to produce a mixture of hydrocarbons that flash when exposed to atmospheric pressure. The separation of oil and gas mixtures on site may prove expensive and lead to higher infrastructure and maintenance costs as well. A multiphase pump offers a good alternative with a lower capital cost and increased overall production. A Progressive Cavity Pump (PCP) is a positive displacement pump type that can be used to pump a wide range of multiphase mixtures, including high viscosity fluids with entrained gas and solid particles in suspension. Despite its advantages, a PCP has a reduced ability to handle high gas-liquid ratios due to limitations of its elastomeric stator material required to overcome thermo and mechanical effects. Also the efficiency decreases significantly with increases in gas volume fractions and reduced differential pressures. The current study focuses on studying the behavior of this unique pump in a wide range of GVFs and studying the effect of this ratio on overall efficiency, temperature and pressure distribution on the stator. The pump exhibits vibration issues at specific differential pressures and they have been studied in this work. This can be of critical value as severe vibration issues can damage the pump components such as couplings and bearings leading to high maintenance costs. Another important issue addressed by this research is the behavior of this pump in transient conditions. Oil well production is highly unpredictable with unexpected rises and drops in GVFs. These transient conditions have been simulated by varying the GVF over wide ranges and studying the pump's behavior in terms of load, temperature rises and instantaneous pressure profiles on the pump stator. This thesis provides a comprehensive study of this pump, its operating ranges and behavior in off-design conditions to assist oil and gas exploration ventures in making an informed choice in pump selection for their applications based on field conditions.

Download or read book Analytical models and experimental studies of centrifugal pump performance in two phase flow key phase report written by D. G. Wilson and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Artificial Lift Methods written by Tan Nguyen and published by Springer Nature. This book was released on 2020-03-04 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book details the major artificial lift methods that can be applied to hydrocarbon reservoirs with declining pressure. These include: the sucker rod pump, gas lift, electrical submersible pump, progressive cavity pump, and plunger lift. The design and applications, as well as troubleshooting, are discussed for each method, and examples, exercises and design projects are provided in order to support the concepts discussed in each chapter. The problems associated with oil recovery in horizontal wells are also explored, and the author proposes solutions to address the various extraction challenges that these wells present. The book represents a timely response to the difficulties associated with unconventional oil sources and declining wells, offering a valuable resource for students of petroleum engineering, as well as hydrocarbon recovery researchers and practicing engineers in the petroleum industry.

Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Analysis of Pressure Variation Flow Conditions and Component Losses in a Single Stage Contrifugal Pump Fitted with Fixed Guide Vanes written by James C. Grassie and published by . This book was released on 1945 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: