This patented pump technology is capable of handling more than 75% free gas, and performs in sagd and abrasive environments. The mp1 is a double suction, twin screw pump designed for continuous service in high viscosity applications where multiple phases are expected. With differential pressure as high as 50 bar 750 psi with a single pump system. This multiphase pump has increased production rates and has several environmental benefits. Introduction the need for multiphase flow measurement in the oil and gas production industry has been evident for many years. Highgor, highgas environments are now common electric submersible pump esp applications, but to produce at full potential, main production pumps need the support of reliable gas handling technology the mgh multiphase gashandling system is designed to manage this issue. Multiphase sampling has been widely used in literature when information about sampling frame is not available. Leistritz multiphase pumps are connected upstream of any process equipment. Onshore and offshore offtheshelf, multiphase pump packages are often not adequate for complex applications. Pdf thermo and fluid dynamic model of a multiphase. Multiphase flow production model promodl velocity string nodal analysis.
Leistritz multiphase pump systems are globally used for the handling of untreated well flow with gas volume. Some of the content is based upon nfogms handbook in multiphase metering. Next generation multiphase pumps for wet gas compression. Why multiphase systems our twoscrew multiphase pump systems have been used on pipelines and wellpads for over 20 years. A multiphase pump will encounter different types of flow regimes in the field, including slug flow where gvf can change from zero to 100% instantaneously. Existing literature on multiphase pumping tends to focus on a certain pump. Pdf multiphase boosting offers significant advantages for subsea field. A multiphase pump, mainly rotodynamic multiphase pump, is a kind of multistage pump which includes the suction unit, the compression cells and the exit unit, as is shown in.
Therefore, the crude oil transfer method using a multiphase pump is being applied to recently developed oil wells. Handbook of multiphase flow metering page 4 of 1 1. 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. Us6164308a system and method for handling multiphase. Itt bornemann gmbh industriestrasse 2 31683 obernkirchen germany fon. The special, open and axial thrust free impeller design of these pumps guarantees this efficient process design. Multiphase pumping eliminates the need for separators. Basic knowledge and understanding of multiphase metering. It eliminates the need to flare gas at the well site, eliminates local water storage and disposal, and exhibits a small environmental footprint. Potential application of multiphase pumps in oil and gas. Due to the unique multiphase pump design there are no leakages. Obviously, the subsea and downhole multiphase pump applications are the most technically challenging with respect to system reliability.
Conventional multiphase boosting as advancing technology is improving recovery, still performance of individual fields varies widely. Pumps france as technical coordinator for the multiphase pump product, covering pump. The revolutionary, patented design and unique hydraulic mechanism deliver superior pumping efficiency and performance compared to electric submersible pumping systems. Page 1 of 19 application of multiphase desander technology to oil and gas production c. Leistritz multiphase pump in a tropical forest in south america leistritz multiphase pump installation on an oil field in central africa q 304 m3h. 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. Twin screw multiphase pumps for offshore applications. Pdf over the last decade, the development, evaluation, and use of multiphaseflowmetering mfm systems have been a major focus for the oil and gas.
Thus, the multiphase pump system can incorporate a collection and recirculation system with a liquid trap downstream of the pump. Products vpump our vpump improves production economics in wells where esps struggle with multiphase conditions that include combinations of sand, gas, and high viscosity oil. The multiphase flow is comprised of at least a liquid phase and a gas phase. Should i ever consider a two screw multiphase pump at relatively low flows. A number of such meters have been developed since the early eighties by research organizations, meter manufacturers, oil and gas production companies and others. The mvp multiphase pump enables continuous operation of esp systems in extreme gas conditions by reducing the tendency for underload shutdowns due to gas interference in the pump. A compressor and a pump are in fluid communication with the flow divider. Our twoscrew multiphase pump systems have been used to pump crude oil in pipelines and on wellpads for over 20 years. In a wide range of oil and gas production applications, bornemann multiphase pumps are capable to operate. Mgh multiphase gashandling system for esps schlumberger. Multiphase pumps supply liquidgas mixtures and enrich liquids with gases, such as air, oxygen or ozone.
The systems efficiently utilize one pump to boost complete, untreated production flows mixture of oil, gas, condensates, water andor particulates through multiphase gathering pipelines. Subsea high boost multiphase pump system development. Over time, multiphase pumping has evolved to become a best practice in some areas. This patented pump technology is capable of handling more than 75% free gas, and performs in. Application of multiphase desander technology to oil and. Functionality the pump hydraulic differs in terms of structure and mode of operation from conventional centrifugal pumps and thus allows throttleddown operation on the suction side without cavitation arising that is critical when using.
However, more than half the worlds oil found still remains in declining and sometimes already abandoned fields. The mp1 is often applied with only minor or no modification to its standard design. Scott multiphase pumping with twinscrew pumps is a relatively new technology that has been proven successful in a variety of field applications. Comparison of multiphase pumping technologies for subsea. A compression cell, which is also called one stage, is composed of an impeller and a diffuser. These pumps handle products with high and low viscosity gently with low shear. Read the multiphase flows application brief all users can get great multiphase simulation results. The pumped products can range from 100 percent liquid to 100 percent gas content gvf. Scott multiphase pumping with twinscrew pumps is a relatively new technology that has been proven successful in a variety of. The multiphase flow is provided to a flow divider that diverts a gas portion from the multiphase flow. Multiphase sampling article about multiphase sampling by. Practical introduction to the basics of multiphase flow measurements incl.
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. Subsea high boost multiphase pump system development and. Gaseous fluids can be fed directly into the pump within the partial flow process. While power is not the focus of this paper but rather the correct prediction of the ingested and therefore delivered flow rate of the pump, figure 3 does provide a look at the power behavior of these pumps, which. Using multiphase pumps allows development of remote locations or previously uneconomical fields. Implementing edurmultiphase pumps eliminates the need for expensive compressor systems, pressure vessels, control units, valves and the corresponding maintenance costs. A subsea production station sps including at least a production manifold and a multi phase pump unit mpp for subsea operation is shown. The main application of subsea multiphase pumps is in mature assets.
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. With gas content gvf gas volume fraction of up to 100 % gas. If you would like more information about twin screw pumps visit. Volume 21 number 2 march 2015 multiphase pumping to. The multiphase sampling design is perhaps the most powerful design that can be efficiently used in situations where sampling frame is not available. Obviously, the subsea and downhole multiphasepump applications are the most technically challenging with respect to system reliability. This reduces the cost associated with the surface facilities. This study summarizes the research work with reference to the multiphase pump in terms of its types, working principles, applications and its advantages in oil production. Flowserve mp1 multiphase pump allow it to be used in a broad range of operating conditions, ranging from highly viscous liquids to 100% gas. A single, tabbed panel organizes multiphase setups into a logical, stepbystep flow that saves time. So, a calculation model is investigated to evaluate the suitable form of the multiphase compressor and to. They are designed for running with high gas volume fractions gvf and gas bubbles with up to 100% gas content as well as for capacities of up to 5,000 m. Hence, the international oil companies must be ready to face the new challenges of using the next generation multiphase pumps for wet gas compression.
Nanobubbles generation using a multiphase pump, properties. To describe the performance as well as the thermodynamic behaviour of a multiphase screw pump, also operating at very high gas volume fractions up to 100 %, a new thermoand fluid dynamic model was developed. Pump power consumption obtained in the multiphase testing of the small screw pump is also shown in figure 3. 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. Volume 21 number 2 march 2015 multiphase pumping to enhance. With the ability to handle high gas volumes as well as potentially reducing the risk on the environment, multiphase pumps are being increasingly used for subsea and downhole applications. The multiphase sampling is a popular rescue source in these sorts of situations.
The systems efficiently utilize one pump to boost complete, untreated production flows mixture of oil, gas, condensates, water andor solids through multiphase gathering pipelines. Comparison of multiphase pumping technologies for subsea and. Sep 05, 2012 if you would like more information about twin screw pumps visit. Multiphase pumps differ from singlephase pumps in diverse ways, including performance evaluation, internal flow characteristics, and design methods, which require the use of complex techniques. 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. With fluents streamlined workflow, novice and expert users can set up complex multiphase simulations. Gasliquid mixture gains kinetic energy when it flows through. Using multiphase pumps allows development of remote locations or previously uneconomical.
This side view shows one of the two meshing rotors, which contains two flights of screws, intake for each being at the outer ends and the discharge in the middle. Reassessment of multiphase pump on fieldcase studies for. Multiphase pump technology allows increased development of remote location, deepwater plays and for fields deemed uneconomical due to low flow pressure. The goal of this graduation report is to predict the leakage. Each of them has respective modules for controloperation operatively connected to at least a floating production storage and offloading unit fpso, subsea umbilicals, risers, flow lines, subsea wells, installations such as xmas tree and other units in. The research is performed on an oil free screw compressor with n rotor. Nanobubbles 150200 nm were formed, at 22 c, with the pump and a recycle column, at various operating pressures and airliquid surface tension. Over time, multiphase pumping has evolved to become a.
A method and device for transferring a multiphase flow to a predetermined location through a pipe. Hank rawlins kvaerner process systems us presented at the 3rd international conference on multiphase technology in banff, alberta, canada. By varying the pump speed a large operational envelope can be maintained. The model, which will be presented in this paper, takes the timedependent gasliquid heat transfer, the compressibility and acceleration effects of the multiphase gap flow as well as the. Pdf thermo and fluid dynamic model of a multiphase screw. 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. Performance characteristics for high and lowviscosity liquids. With a differential pressure of 150 bar and a pressure rating of 15,000 psi, it has the capability of handling fluids with viscosities in the range of 2 to 4,000 cp and a gas volume frac tion of 100%. Multiphase pump the multiphase pump that was used for this analysis is a framohx 360120038 pump. Study of multiphase flow at the suction of screw compressor. 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.
1340 1071 1176 1042 1175 301 358 1411 1478 1115 478 603 1087 1384 1167 511 928 424 358 747 247 1167 586 703 1026 613 1363 592 1425 90 968 461 715 921