There is a great variety of positive displacement pumps. A down hole motor used in the oil field to drive the drill bit or other down hole tools during directional drilling or performance drilling applications. Piston compressors deliver compressible media such as gas or air. Figure 21 shows a generic process with a positive displacement pump in this case a gear pump connected to deliver liquid from a to b. To make a good choice between these pump types it is. Ts8100 positive displacement pc pump series user guide ts8100pcpumpuserguide. This section of pump books has been produced to train pump users technicians and engineers at all levels, these handbooks will provide a great reference tool.
When a constant flow is required, a positive displacement reciprocating pump is the pump of choice, especially for meteringapplications. Drill string rotation can be eliminated by having a motor placed downhole to drive the bit by hydraulic or electrical power. Our aims are to 1 emphasize the basic prin ciple involved in the operation. Written at a mathematical and technical level, the book explores the most influential research in this field over the past decade, along with industry best practices.
This book presents functional, operational and technical aspects of positive displacement motor. The rotational motion to a drill bit is provided by the drilling fluid which is pumped into the wellbore with the help of a positive displacement motor that. Selection and integration of positive displacement motors. Special purpose high speed singlestage centrifugal blowers with inlet guide vanes and outlet diffuser vanes to achieve a wide turndown at constant operating speed. If you need help choosing a system or components or have any questions about our products, please feel free to contact us using the information below. Positive displacement pumps allow liquid to flow into an open cavity trap the liquid in the pump transport liquid from the suction to discharge port mechanically force liquid out of the pump. Positive displacement pump design and calculation tajilapak. Piston compressors are positive displacement machines. A positive displacement pump causes a fluid to move by trapping a.
Problem of vfd controlling positive displacement pump. The standard covers hydraulically actuated and packed plunger metering pumps. Geological repository systems for safe disposal of spent nuclear fuels and radioactive waste second edition, 2017. Positive displacement pdf positive displacement pdf positive displacement pdf download. All types of hydraulic motors have common design features. A turbomachine employs dynamic action of rotor which changes the ener. Universal 3 series positive displacement pumps waukesha. A pump and motor test stand is constructed to measure the ef. These rotary lobe machines are typically used for polymer powder or pellet transfer and come in different sizes. Positive displacement pumps have a very close clearance between rotating and stationary parts and hence are selfpriming. We will compare two types of positive displacement and two types of dynamic blowers.
The turbodrill, first patented in 1873, provided a means of driving the bit by harnessing the power of the drilling fluid, but the complexity of the tool and the lack of suitable drilling bits prevented it from being. They also provide a fixed displacement per revolution and, within mechanical limitations, infinite pressure to move fluids. I claim a gas turbine engine having positive displacement by means of turbine blades kept in constant lateral orientation during shaft rotation, thus takingin and positively displacing air and carbureted or injected fuel through a closefitting wideningandnarrowing internal channel, accomplishing positive compression, combustion, expansion and exhaust. Positive displacement pumps features and a positive displace. A principal advantage of hydraulic power is the high power density power per unit weight that can be achieved. Stator life of a positive displacement downhole drilling motor article pdf available in journal of energy resources technology 1212 june 1999 with 2,227 reads how we measure reads. Positive displacement an overview sciencedirect topics. The hr helical rotor pumps are a positive displacement pump, the rotor has an eccentric movement which when rotating inside the stator effectively squeezes water through the pump on every rotation. The pdm bearing section contains a mudlubricated bearing stack that utilize a stacked ballandrace to handle thrust loads, while carbide radial bearings handle side loads. The pcpd pump uses drilling fluid commonly referred to as drilling mud, or just mud to create eccentric motion in the power section of the motor which is transferred as.
A positive displacement downhole mud motor is a downhole tool which is used during field drilling operations to provide rotational power to drill bits and other downhole tools. Positive displacement pump reciprocating pump turbine pump pump 2 fan selectable fan fan blades fan blades 2 triple fan blades axial flow fan turbine driver doubleflow turbine motor driven turbine ejector spray motor iso screw pump iso reciprocating piston pump iso positive. Test conditions focused on low displacement and low speed regimes. Modern design innovations and tools explains the design and workings of a wide range of positive displacement pumps, compressors and gas expanders. The books includes all the necessary information selection and application of the all ranges of centrifugal, rotary, positive displacement pumps and boiler feed water pumps. Rotarypiston or oscillating piston machines for liquids.
When a constant flow is required, a positive displacement. Positive displacement motor pdm the use of mud motors is greatly dependent on financial ef ficiency. Positive displacement motors can also be used for performance drilling, straight hole drilling, coring, underreaming, and milling operations. Positive displacement pump makes a fluid move by traping a fixed amount and forcing displacing that trapped volume into the discharge pipe. Understanding a positive displacement pump motor electric. Positive displacement machines for liquids, or pumps in which the workingfluid is displaced by one or more reciprocating pistons or by flexible working members.
We control it with a gk30002s0007 1 hp variable frequency drive. Positivedisplacement pumps frequently are used in hydraulic systems at pressures ranging up to 5000 psi. Api 675 is a comprehensive standard issued by the american petroleum institute api that is intended to provide a purchase specification covering controlled volume, positive displacement pd pumps for petroleum, chemical and gas industry services. Specific gravity specific gravity is used to compare the density of a product to the density of water. The motor drove the bit through a gearing mechanism. Major technologies of positive displacement expanders are the piston, the twinscrew, the scroll, the vane. Positive displacement motor an overview sciencedirect topics. Positive displacement expanders differ by the technology of stator and rotors and hence the type of mechanism used to create the variation of the volume of the working chambers and the timing of suction, expansion, and discharge phases. Positive displacement pumps with positive displacement pumps the flow rate q is linear dependent on the pump speed n. Jan 01, 2015 the positive displacement motors covers the full spectrum of topics in terms of analysis and design of the downhole mud motor that serves the workhorse of the downhole drilling system for several decades. Positive displacement motors theory and application. Helical rotor pumps positive displacement pump lorentz.
Positive displacement motor pdm rotary steerable system. If an internal link led you here, you may wish to change the link to. Us9206644b2 positive displacement motor pdm rotary. Todays positive displacement motors are based on the work of rene moineau, a french. A positive displacement pump delivers a fixed amount of fluid per revolution.
Centrifugal pump complete training video basics to advance. This package provides full skid control and protection of your motor and positive displacement piston pump. A regenerative loop hydraulic system is used to reduce the power requirements of the test stand. This disambiguation page lists articles associated with the title positive displacement. The second is to help the user analyze their pumping requirements, make an appropriate pump selection and size the pump, motor and drive for best performance. Positive displacement pdf when to use a centrifugal or a positive displacement pump pd pump is not always a clear choice. As drilling fluid is pumped through the positive displacement motor, it converts the hydrauli. The test stand uses an xpc target data acquisition system. Robox lobe packages can be equipped with ie3 drive motors and premium efficiency upon request. Positive displacement pumps features and a positive. A mud motor or drilling motor is a progressive cavity positive displacement pump pcpd placed in the drill string to provide additional power to the bit while drilling. The pcpd pump uses drilling fluid commonly referred to as drilling mud, or just mud to create eccentric motion in the power section of the motor which is transferred as concentric power to the drill bit. The performance and efficiency of hydraulic pumps and motors. Positivedisplacement turbine engine seagrave, john howard.
It offers a front loading seal design with no bearings in the product zone. Some positive displacement pumps use an expanding cavity on on the suction side and a decreasing cavity on the suction side expands and the liquid flows out of the discharges side. Positive displacement machines reciprocating piston and cylinder are low speed machine and can only handle smaller flow rates of fluids through it. This pump can provide the mud at varying flow rates and. I claim a gas turbine engine having positive displacement by means of turbine blades kept in constant lateral orientation during shaft rotation, thus takingin and positively displacing air and carbureted or injected fuel through a closefitting wideningandnarrowing internal channel, accomplishing positive compression, combustion, expansion and exhaust continuously during each shaft. Also there was some debate originally as to whether or not the positive displacement pump was a constant torque load, on page 19 on the pdf toolbar of the baldor reference the pump is listed as a constant torque load. Aug 18, 2016 a down hole motor used in the oil field to drive the drill bit or other down hole tools during directional drilling or performance drilling applications. It is mainly used in directional drilling operations. The robuschi positive displacement blower package offers smooth and quiet operation by utilising cutting edge technology and innovative components.
Pump type is a piston dosing pump with manual struck length adjustment with motor 3 phase 220 ac volt delta connection variable speed. Generally, we express density in units of pounds per cubic inch. The universal 3 series is the latest addition to the waukesha positive displacement pump family by spx flow. Positive displacement pumps frequently are used in hydraulic systems at pressures ranging up to 5000 psi. Rotarypiston or oscillating piston pumps for elastic fluids. Pdf format this file type includes high resolution graphics and schematics when applicable.
A positivedisplacement downhole mud motor is a downhole tool which is used during field drilling operations to provide rotational power to drill bits and other downhole tools. Positive displacement motor an overview sciencedirect. The piston displacement element forms a space with variable volume together with cylinder and cylinder cover. What is the difference between a rotodynamic turbomachine. Positive displacement pc pump ts8100100 techcon systems. What is positive displacement pumps types and advantages. Aerzen usa whitepaper aeration blowers in the wastwater. What is positive displacement pumps types and advantages positive displacement pumps positive displacement pumps, in contrast, have very little slips, are selfpriming and pump against very high pressures, but their volumetric capacity is low. This positive displacement action means that water is pumped when the pump is running at very low speeds and that high pressure can be created. In straight vertical holes, the mud motor may be used solely for increased rate of penetration rop, or to minimize erosion and wear on the drill string, since the drill string does not need to be turned as fast. Components of positive displacement motors pdms a positive displacement motor is made up of four basic components.
Positive displacement pump drive package worldwide electrics positive displacement pump drive package is built for the demanding startup, control and protection needed for salt water disposal and jet pump applications. Although the possibilities of using electrodrills are still being investigated, no commercial tool is presently in use. An advantage of mud lubricated bearings is that there are no limitations on bit pressure drop compared to a sealed bearing assembly and temperature is not generally an issue. Motor step motor ac motor motor generator generator ac generator dc generator motor operated valve motor driven turbine dc motor gear motor diesel motor electric motor turbine m impact separator gravity separator injector reducer elevator zform elevator lift elevator 2 skip hoist conveyor electromagnetic separator rupture disc vertical shaping. A surface pump on the drilling platform or ground moves the drilling mud through the drillstring to the pdm. The performance and efficiency of hydraulic pumps and. A positive displacement motor is made up of four basic components. Positive displacement motor pdm the positive displacement motors pdm of micon downholetools gmbh apply the reverse pumping principle. From the controls point of view, however, they are all similar. Geological repository systems for safe disposal of spent nuclear fuels and radioactive waste second edition, 2017 related terms.
91 1225 498 679 1283 251 367 84 507 1205 205 763 1270 1050 1419 193 20 199 224 1358 649 1127 904 966 562 212 863 1124 243 956 137 102 362 1409 402 992