Sulzer helicoaxial multiphase pumps enable boosting of the oil gas water mixture from producing wells, without separating the gas from the liquids. Next generation multiphase pump solutions for heavy grade crude. Offshore technology reports next generation multiphase pump. In the present work, a liquidgas multiphase pump is designed and manufactured, and then tested in a specialized test rig to reveal the transient pressure characteristics of the multiphase pump. Extrapolation of power requirements up to 7 mw 0 hp. Obviously, the subsea and downhole multiphase pump applications are the most technically challenging with respect to system reliability. Subsea high boost multiphase pump system development. It eliminates the need to flare gas at the well site, eliminates local water storage and disposal, and exhibits a small environmental footprint. A pump that can handle the complete production from a well oil, natural gas, water and sand, for example without needing to separate or process the production stream near or at the wellhead.
This reduces the cost associated with the surface facilities. Global customers can easily find configurations to precisely match. Abstract in oil field applications it is often required to pump oil, gas, and water as mixtures rather than separating the fluid. Pumps can be classified into three major groups according to the method they use to move the fluid. A modern multiphase compressor technology is proposed and investigated for wet gas compression. Parameter value rated flow rate q m3h 1944 rated head h m 17 rotational speed n rmin 1450 specific speed ns 464 number of impeller blade zi 5. Improvement of hydrodynamic performance of a multiphase pump.
The mp1 is often applied with only minor or no modification to its standard design. More demanding service requirements impose challenges on screw pump manufactures to provide higher pressure or flow capability, better wear resistance, improved corrosion resistance and lower leakage emissions. The systems efficiently utilize one pump to boost complete, untreated production flows mixture of oil, gas, condensates, water andor solids through multiphase gathering pipelines. Theoretical model for the performance of liquid ring pump. These pumps are capable of handling gas volume fractions gvf between 0 100% liquid and 1 100% gas. The main application of subsea multiphase pumps is in mature assets. Edur ebu centrifugal pump daf systems hydro innovations. Flowserve is the driving force in the global pump marketplace. Comparison of multiphase pumping technologies for subsea and. The multiphase performances are obtained, and the transient pressure. Potential application of multiphase pumps in oil and gas. Pumps operate by some mechanism typically reciprocating or rotary, and consume energy to perform mechanical work moving the fluid. The impeller of the model pump consists of three blades, and the diffuser comprises 11 vanes.
System deliverability and flow assurance pump suitability and expected time to failure electrical power supply subsea installation controls, instrumentation and barrier fluid. Multiphase pump oh2 design iso 709 api 610 features. A retrievable pump and motor cartridge, including intervention tool, is typically less than 35 tons, which allows the pump and motor to be replaced by a lowcost light interventional vessel in less than 24 hours grimstad 2004. The scope of the journal includes all aspects of mass, momentum and energy exchange phenomena among different phases such as occur in disperse flows, gasliquid and liquid. Multiphase pump, impeller, computational fluid dynamics, flow pattern, gas pocket date received. Leistritz multiphase pump in a tropical forest in south america leistritz multiphase pump installation on an oil field in central africa q 304 m3h. Multiphase flow simulation of pump station performed in helyx. Multiphase pumping to enhance oil recovery saurabh goswami project quality manager, chevron corporation, houston, tx, usa abstract recently, interest in the subsea deployment of multiphase pumps has grown as operators search for methods to improve production and economics for subsea completed wells. Based on the actual operating cycle of suctioncompressiondischargeexpansion, a universal theoretical model for performance of liquid ring pump was established in this study, to solve the problem that the theoretical models deviated. Multiphase transfer pumps rotating rights multiphase transfer pump mtp is a duplex, doubleacting piston pump that is capable of handling up to 250,000 boepd of water, oil and gas mixtures. Pdf a series of rotor profiles for vacuum and multiphase pumps was created to check the suitability of standard screw compressor design.
Multiphase flow production model promodl velocity string nodal analysis. Bp sets new subsea multiphase pumping records at king offshore. Multiphase pumping eliminates the need for separators. Scott multiphase pumping with twinscrew pumps is a relatively new technology that has been proven successful in a variety of field applications. Pdf multiphase flow performance prediction model for twin. The energy saved through the use of the previously flared gases is also a contribution to keeping our environment clean. Over time, multiphase pumping has evolved to become a best practice in some areas. Abstract in oil field applications it is often required to pump oil, gas, and. The edur ebu multiphase pump is a multistage centrifugal pump with the unique capability of being able to pump a liquidgas mixture. Failure mode and effect analysis of subsea multiphase pump. Deepwater gom oil phase diagram apeasphaltene precipitation.
The design of the mp1 was further refined to provide the highest overall efficiency and lowest operating vibration levels of any multiphase, twinscrew pump. Although the performance prediction of twinscrew pumps on liquids is well established, the prediction of performance of these pumps on. Improvement of hydrodynamic performance of a multiphase pump using design of. A successful offshore multiphase pump installation in the middle. Please complete as much information as possible plus any other data you think would be of importance. Multiphase pumps are core equipment for offshore plant industry. Impeller and computation domain of the mixedflow pump. Multiphase pump technology is still considered a relatively young technology even though it was mentioned in oil and gas literature way back in 1957. Why multiphase systems our twoscrew multiphase pump systems have been used on pipelines and wellpads for over 20 years. Abstract by introducing a multiphase twin screw pump as an artificial lifting device inside a marginal gas well downhole for wet gas compression application. The mp1 is a double suction, twin screw pump designed for continuous service in high viscosity applications where multiple phases are expected. Should i ever consider a two screw multiphase pump at relatively low flows.
Bzss or allbronze construction, so may be used to handle a variety of liquids. With the multiphase pump as the heart of the system, the scope of supply includes baseframe, driver, instrumentation, onskid piping with valves, auxiliary systems, control equipment etc. This system is based on fieldproven progressing cavity pump technology that is designed to handle every phase with its advanced technology and design. In a positivedisplacement pd pump, a discrete amount of fluid is trapped, forced through the pump, and discharged. The scope of supply includes the bare pump as well as the complete skid mounted mppunit including pump, driver, auxiliary systems and piping. All subsea multiphase pumps installed to date are designed to be retrievable by a light intervention vessel.
Primary pump components are two intermeshing, selfpriming screws that isolate a volume of liquid and convey it from pump inlet to outlet. The rotating parts, rotor and stator, and materials in seepex pumps are adapted to each application. Multiphase transportation over long distances has been made possible by predicting both stationary and transient multiphase. Cenesis phase multiphase encapsulated production solution. In oil and gas exploitation, the multiphase pump is a vital piece of. Failure mode and effect analysis of subsea multiphase pump equipment article pdf available in matec web of conferences. Sulzer ohh pump equipped with fieldproven helicoaxial hydraulics capable of handling a mixture of liquid and gas actual total flow at pump inlet of 600 m3h 2,500 usgpm pressure rise of 5 bar 70 psi power up to 250 kw 330 hp pump speed from 1,000 to 3,600 rpm. An engineered centrifugal pump for high capacity and relatively low differential pressure should have high specific speed nq 7,00020,000 engineering toolbox, 20 and utilize axial impellers. Investigation of gasliquid twophase flow in a threestage. Finally, section 5 brings uptodate information on current research developments and future outlook in the field of multiphase reactors. Onshore and offshore offtheshelf, multiphase pump packages are often not adequate for complex applications. Volume 21 number 2 march 2015 multiphase pumping to enhance.
A pump is a device that moves fluids liquids or gases, or sometimes slurries, by mechanical action. Although twinscrew pumps are marketed for use in multiphase flows, current pump performance data from manufacturers focuses on the behavior while pumping a singlephase liquid. Regime change caused by phase change processes evaporator single phase liquid bubble slug droplet single phase vapor almost all gasliquid multiphase flow regimes different phases have different length scales some flows are difficult to classify. This increase will climb to a about 50% over the next 20 years. Improvement of hydrodynamic performance of a multiphase. Subsea high boost multiphase pump system development and.
The systems efficiently utilize one pump to boost complete, untreated production flows mixture of oil, gas, condensates, water andor particulates through multiphase gathering pipelines. The global demand for energy is estimated to increase over the next few decades by 23% per year. Seepex progressive cavity pumps for multiphase pumping handle fluids with a gas yield of up to 99% with minimal technical accessories. Multiphase pumps can also dampen the slug flow to the topside host, thereby reducing process upsets. Chapter1 editors perspectiveonmultiphasechemistry intheatmosphere sherriw. Leistritz multiphase pump systems are globally used for the handling of untreated well flow with gas volume fractions gvf between 0 and 100 %, flow rates in excess of 5000 m 3. Leistritz multiphase pumps mpp are used all over the world in both onshore and offshore applications. It is often impractical or uneconomic to build a host for every asset, so production from. Multiphase pump in hysis chemical process simulation. Using multiphase pumps allows development of remote locations or previously uneconomical. Liquid ring pump is widely applied in many industry fields due to the advantages of isothermal compression process, simple structure, and liquidsealing.
The cenesis phase multiphase encapsulated production solution encases the entire esp system in a shroud to naturally separate gas slugs from the production stream. Our twoscrew multiphase pump systems have been used to pump crude oil in pipelines and on wellpads for over 20 years. Time is right for multiphase pumps tom cropper, editor low prices, tight profit. According to the basic theory, the structural diagram of the test rig. Multiphase pump application requirements the following information will assist leistritz in specifying a multiphase pump or pump system for your application. Separation at source requires costly multitransport of the separated products. This multiphase pump has increased production rates and has several environmental benefits. Rotating right also has distribution access to a wide range of multiphase pumps, which allows us to apply the most effective pump to each application. As a result, stator overheating is prevented, and the pump operates troublefree at the optimum speed for the gas volume fraction. As a result, stator overheating is prevented, and the pump operates troublefree at the optimum speed for the. Properly timed, the screws overcome conventional pump. This study is focused on the development and validation of an analytical model to predict the performance characteristics of multiphase flow twinscrew pump for.
The international journal of multiphase flow publishes analytical, numerical and experimental articles of lasting interest. The standard range is designed for pressure boost up to 90 bar. A modular system for twin screw pumps a successful offshore multiphase pump installation in the middle east multiple screw pumps. Mpp pumps can be driven by electric motors, diesel engines, gas engines or turbines. No other pump company in the world has the depth or breadth of expertise in the successful application of preengineered, engineered, and special purpose pumps and systems. As such, the performance data for multiphase flows is. Warren pumps and its colfax affiliates throughout the world have combined their product knowledge and engineering knowhow to offer the crude oil market two types of multiphase pumps. The scope of the journal includes all aspects of mass, momentum and energy exchange phenomena among different phases such as occur in disperse flows, gasliquid and liquidliquid flows, flows in porous media. This pump has the ability to double the volume pumped by the old simplex piston pump with less than a 15% increase in required input horsepower. Multiphase boosting is clean due to the unique multiphase pump design there are no leakages of gas or liquid. The goal of this graduation report is to predict the leakage.
Comparison of multiphase pumping technologies for subsea. Rotary screw pumps have existed for many years and are manufactured around the world. Special report next generation multiphase pumps technology. Multiphase pumps a potential approach as mentioned above, with the conventional production operation the well fluid is first separated into gas and liquid before being pump and compressed through separated lines. According to a report about the tendency of multiphase pumps for offshore plant, a helicoaxial pump is the most preferred. Test data of twinscrew rotary pumps are compared with predictions of performance over ranges of. Physical model of multiphase pump the model pump designed by kim et al. Existing literature on multiphase pumping tends to focus on a certain. The three most commonly used types of multiphase pump on the market are tsp, hap, and pcp and they can all be installed onshore, offshore, subsea, and downhole. Most important types of multiphase reactors and phase contacting patterns discussed in this chapter. To demonstrate that multiphase subsea pumping is a feasible technology for the otter field to boost production from all 3 wells.
Flowserve mp1 multiphase pump allow it to be used in a broad range of operating conditions, ranging from highly viscous liquids to 100% gas. Next generation multiphase pumps for wet gas compression. Production and well operations artificial lift systems hydraulic and jet pumps 0. Bps king field in the gulf of mexico in mississippi canyon blocks 84, 85, 128, and 129 is the first subsea multiphase pump application in more than 1,676 m 5,500 ft of water and more than 24 km 15 mi away from its host tlp double the records for each measure. Use of subsea multiphase pumps as an alternative to esp. Multiphase environmental chemistry in the atmosphere. Subsea high boost multiphase pump system development and applications sb hihb mlih p ssubsea high boost multiphase pump system, in operation at petrobras barracuda field arne b. With its unique double case design, it acts inherently as a separator to run multiphase products up to 100% gas void fractions at a wide range of flow rates, pressures, and viscosities.
Pdf vacuum and multiphase screw pump rotor profiles and their. The resulting research yielded the development of a multiphase transfer system that handles every phase without the need for multiple pumps as with the traditional method. As for any centrifugal pump the pressure boosting capability depends on the density of the. This pumping principle produces a pulsating flow, rather than a smooth flow.
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