EP0532397B1 - Continuous mixing device, process and use in a pumping plant for high viscosity fluid - Google Patents

Continuous mixing device, process and use in a pumping plant for high viscosity fluid Download PDF

Info

Publication number
EP0532397B1
EP0532397B1 EP92402438A EP92402438A EP0532397B1 EP 0532397 B1 EP0532397 B1 EP 0532397B1 EP 92402438 A EP92402438 A EP 92402438A EP 92402438 A EP92402438 A EP 92402438A EP 0532397 B1 EP0532397 B1 EP 0532397B1
Authority
EP
European Patent Office
Prior art keywords
blades
fluid
pump
inlet
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92402438A
Other languages
German (de)
French (fr)
Other versions
EP0532397A1 (en
Inventor
Henri Cholet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of EP0532397A1 publication Critical patent/EP0532397A1/en
Application granted granted Critical
Publication of EP0532397B1 publication Critical patent/EP0532397B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/50—Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/55—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers driven by the moving material
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids

Definitions

  • the invention relates to a device intended for mixing in particular high viscosity crude oil with at least one other less viscous fluid in order to obtain a mixture of viscosity much lower than said crude oil, the mixture being more efficiently displaced by pumping by conventional systems.
  • Patent application FR-2656035 discloses a device for pumping a liquid of high viscosity, but the entire volume of the working fluid is mixed with crude oil. In addition, this installation does not describe a dynamic and continuous mixing device placed upstream of the pump.
  • the invention advantageously improves the prior techniques in particular by the use of a mixing device separate from the pump and allowing an appropriate adjustment of the physical characteristics of the mixture brought to the inlet of the pump.
  • the object of the present invention therefore relates to a pumping device according to one of claims 1 to 7, a method of pumping a high viscosity fluid according to one of claims 8, 9 and the use of the device according to the invention in an installation for pumping a high viscosity crude oil according to one of claims 10 at 12.
  • Figure 1 shows a partial sectional view of the mixing device.
  • Figure 2 shows a perspective of the rotating shaft of the mixer to better describe the respective arrangement of the blades.
  • FIG. 3 represents a graph giving the viscosity of the oil and of the mixture obtained as a function of the temperature.
  • FIG. 4 represents the diagram of a crude oil pumping installation comprising the mixer.
  • FIG. 5 represents a variant of the previous pumping installation.
  • Figure 6 shows another variant of the pumping installation.
  • the mixer 1 is incorporated into a casing 12 secured to the body of the pump, not shown in this figure.
  • the conduit 8 puts the crude oil reserve in communication with the inlet 2 of the body 17 of the mixer 1.
  • An orifice 9 puts the channel 10 in communication with the inlet 2 of the mixer.
  • the channel 10 is in particular located in the wall of the casing 12.
  • the outlet 3 of the body 17 of the mixer 1 communicates with the inlet 13 of the centrifugal pump, the first wheel of which is referenced 14.
  • a cylindrical shaft 4 is guided at its two ends by the bearing 6 and a connection means 5 with the shaft of the centrifugal pump.
  • the shaft 4 comprises pairs of blades 7 and 7a, symmetrical with respect to the axis of the shaft 4 and located in the same section.
  • the shaft is equipped with twelve pairs of blades arranged along the length of the shaft so that the upper edge of a blade is substantially in the same section as the lower edge of the blade adjacent.
  • each volume of revolution generated by the rotation of a pair of blades is substantially adjacent to the next.
  • the blades are inclined at an acute angle i with respect to the axis of the shaft oriented in the direction of flow, that is to say in the direction of arrow 15, the direction of rotation of the 'shaft being indicated by arrow 16.
  • This mode of orientation of the blades relative to the direction of rotation of the shaft and the direction of circulation of the fluids in the mixer provides a reactive force on the shaft in the same direction as the circulation.
  • This force is the axial component of the result of the reactive forces on each blade.
  • the rotation of these propellers that constitute all of the blades tends to push the flow in the opposite direction to its circulation.
  • the mixer can be compared to a repelling propeller. This arrangement promotes the mixing action of the fluids in the mixer to obtain a homogeneous mixture.
  • the blade section may not be tilted as above.
  • the blades may be in particular flat and their width disposed parallel to the axis of the shaft, that is to say that the angle i is zero.
  • the blades can also be of substantially cylindrical shape. More generally, it can be said that in this embodiment the mixer will be neither repellent against flow, nor attractive. The mode of action is then close to a shearing action on the circulating fluid vein.
  • the blades of the continuous mixer cannot have an action providing an acceleration of the flow, such as an attractive propeller, or a centrifugal pump wheel.
  • the mixer of our invention is totally different from a compression element, whether this is a pump element, a booster element or a priming element.
  • the mixer of our invention provides a pressure drop, generally minimal but still noticeable.
  • the pairs of blades are distributed over the periphery of the shaft with an angular offset of 120 °. So the fourth blade has the same angular position as the first then defining a set of three pairs of blades.
  • the embodiment shown therefore comprises four of these sets.
  • the number or arrangement of the blades may be different. Indeed, depending on the nature of the fluids and their flow in the mixer, it may be necessary to increase or decrease the number of blades, and even to have more than two blades in the same cross section. In this case, they will be distributed regularly around the periphery of the tree.
  • the value of the angle i can be variable but less than or equal to 90 °, taking into account the references indicated above.
  • Figure 2 shows in partial perspective the arrangement thus obtained in the preferred embodiment.
  • the body 17 of the mixer comprises deflectors 11 arranged along generatrices of the cylindrical interior volume of the body.
  • This embodiment comprises four deflectors distributed at 90 °. These deflectors can be produced in multiple and diverse ways, their main role being to straighten the fluid stream by promoting the turbulence created by the blades while allowing the fluid to circulate between the inlet and the outlet.
  • Curve A relates to anhydrous heavy crude oil.
  • Curve B gives the viscosity of an emulsion consisting of 60% of the heavy petroleum of curve A and 40% of water, the assembly having passed through the mixing device of the invention with a flow rate of 2500 l / hour and for a mixer rotation speed of 3000 rpm.
  • Curve C represents the viscosity of a mixture obtained in a container from the same proportion of crude oil and water.
  • FIG. 4 represents a pumping installation lowered into a well 20, generally cased by a casing 21.
  • the well is in communication with a viscous oil deposit. This oil flows into the well.
  • the installation pump is immersed in petroleum 22 to a suitable depth depending in particular on the characteristics of the deposit, the configuration of the completion and the static and dynamic level of the effluent.
  • the upper part 27 is made up of concentric tubes, assembled to the surface where there are located in particular an installation 28 for injecting the working fluid, an outlet from a collecting pipe 29 for a portion of the working fluid, an outlet for a line 30 for collecting the compressed mixture, an outlet from a degassing line 31 and a departure from the line 35 for injecting the working fluid.
  • Line 35 connects the injection system 28 to the inlet 33 of the hydraulic motor.
  • Line 31 is an annular line defined by the well and the outside of the tubulars and casings of the pumping installation. This pipe directly connects the crude oil reserve to the surface and allows the gas to be collected on the surface while allowing the oil to degas naturally. The more the oil 22 is degassed, the better the efficiency of the pumping installation.
  • Line 30 connects the outlet of pump 34 to the surface.
  • Line 29 connects outlet 32 of the hydraulic motor.
  • a conduit 37 connects the outlet 32 of the motor to the inlet 38 of the mixer 24.
  • the supply conduit 23 comprises two concentric tubes 40 and 41 forming baffles in order to promote the degassing of the crude. This enters the conduit through the perforations 39, passes through the annular space defined by the tubes 40 and 41 and then back up into the tube 41 to arrive at the inlet 38 of the mixer.
  • the rotary shafts 42, 43 and 44 respectively of the mixer, of the pump and of the motor, are linked in rotation, that is to say that the rotation of the motor shaft causes the rotation of the pump shaft and the mixer shaft.
  • the motor 26 can be of the turbine or volumetric type, for example according to the Moineau principle.
  • the circulation of the working fluid in the engine can be done from bottom to top or the reverse.
  • the pump can be of the single or multi-stage centrifugal type or of the volumetric type for example according to the Moineau principle.
  • the dimensions of the concentric triple completion lowered into the casing 21 in casing 9 5/8 " can be: casing or tubing 7" for line 30, tubing 4 1/2 "or 5" for line 29 and tubing 2 "or 2 7/8" for the pipe 35.
  • the installation is simplified from the point of view of the number of pipes compared to the preferred embodiment of Figure 4 where three concentric pipes 30, 29, 35 are used in the well 20 , that is, a triple completion.
  • a packer type sealing element 45 between the oil supply pipe and the walls of the well. This packer isolates the reservoir area and allows the use of the annular pipe 46 above said packer for the ascent of the mixture from the outlet 34 of the pump to the surface.
  • the completion then comprises two tubes 29 and 35 for respectively raising a portion of the working fluid and injecting the motor fluid.
  • FIG. 6 A second variant of the pumping installation is shown in FIG. 6. This involves bringing together the pumped mixture and the part of the working fluid.
  • the outputs 32 and 34 respectively of the motor and of the pump communicate in a single line 47.
  • This line is connected at the surface to an installation 48 suitable for the separation of crude oil, working fluid and other fluids from the mixture if those - these are not the working fluid.
  • a pipe 49 collects the working fluid to recycle it in the injection installation 28.
  • the lines 29, 30 and 35 may not be concentric, in fact the prior art knows the multiple non-concentric completions, that is to say by means of parallel tubes in the well 20.
  • this lower viscosity fluid admitted to the inlet of the mixer through the orifice 9 is different from the working fluid used for the motorization of the pumping installation.
  • this lower viscosity fluid may include several constituents adapted to promote mixing. In this case we can use another separate supply line and connected to the surface.
  • the fluid (s) mixed with the high viscosity fluid may be of mineral or organic origin.
  • the mixture obtained by the mixer according to the invention will be an emulsion and / or a dilution.
  • the proportions of the constituents of the mixture can be variable depending on the characteristics of the deposit and the nature of the fluids in place.
  • means for regulating the flow of fluid injected at the inlet of the mixer are in particular located between the outlet of the engine and the pipe 10 or 37.
  • the well may include a portion that is inclined or close to the horizontal.
  • the pumping installation is then generally lowered into a part of the well inclined well.

Description

L'invention concerne un dispositif destiné à mélanger en particulier du pétrole brut de haute viscosité avec au moins un autre fluide moins visqueux afin d'obtenir un mélange de viscosité beaucoup plus faible que ledit pétrole brut, le mélange étant plus efficacement déplacé par pompage par les systèmes conventionnels.The invention relates to a device intended for mixing in particular high viscosity crude oil with at least one other less viscous fluid in order to obtain a mixture of viscosity much lower than said crude oil, the mixture being more efficiently displaced by pumping by conventional systems.

Les développements actuels de la production pétrolière conduisent à l'exploitation de gisements d'huile visqueuse, notamment à partir de puits comportant des parties horizontales ou fortement inclinées par rapport à la verticale traversant le gisement.Current developments in petroleum production have led to the exploitation of viscous oil deposits, in particular from wells having horizontal or strongly inclined parts with respect to the vertical passing through the deposit.

Dans les cas où le pompage par tige est techniquement impossible ou économiquement non rentable, il faut alors envisager l'usage de pompes rotatives soit centrifuges soit volumétriques. Mais ces pompes peuvent ne pas fonctionner convenablement avec des fluides de forte viscosité.In cases where pumping by rod is technically impossible or economically uneconomic, the use of rotary pumps, either centrifugal or positive displacement, should then be considered. However, these pumps may not work properly with high viscosity fluids.

On connaît par le document US-A-4721436 un procédé et une installation pour pomper un pétrole visqueux. Ce document enseigne l'utilisation d'une pompe centrifuge entraînée en rotation par une turbine hydraulique fonctionnant par' l'injection à partir de la surface d'un fluide moteur, lequel est en partie injecté au niveau de l'aspiration de la pompe pour faire baisser la viscosité du pétrole dans la pompe. Cette installation ne possède pas de dispositif mélangeur en amont de la pompe. Dans ce système le mélange se fait d'une manière interne à la pompe.Document US-A-4721436 discloses a method and an installation for pumping viscous oil. This document teaches the use of a centrifugal pump driven in rotation by a hydraulic turbine operating by the injection from the surface of a working fluid, which is partly injected at the suction of the pump to lower the viscosity of the oil in the pump. This installation does not have a mixing device upstream of the pump. In this system mixing takes place internally at the pump.

On connaît par la demande de brevet FR-2656035 un dispositif de pompage d'un liquide de forte viscosité, mais la totalité du volume du fluide moteur est mélangé au pétrole brut. De plus, cette installation ne décrit pas de dispositif mélangeur dynamique et continu placé en amont de la pompe.Patent application FR-2656035 discloses a device for pumping a liquid of high viscosity, but the entire volume of the working fluid is mixed with crude oil. In addition, this installation does not describe a dynamic and continuous mixing device placed upstream of the pump.

L'invention améliore avantageusement les techniques antérieures notamment par l'utilisation d'un dispositif mélangeur séparé de la pompe et permettant un réglage approprié des caractéristiques physiques du mélange amené à l'entrée de la pompe.The invention advantageously improves the prior techniques in particular by the use of a mixing device separate from the pump and allowing an appropriate adjustment of the physical characteristics of the mixture brought to the inlet of the pump.

L'objet de la présente invention concerne donc un dispositif de pompage selon l'une des revendications 1 à 7, un procédé de pompage d'un fluide de haute viscosité selon l'une des revendications 8, 9 et l'utilisation du dispositif selon l'invention dans une installation de pompage d'un pétrole brut à haute viscosité selon l'une des revendications 10 à 12.The object of the present invention therefore relates to a pumping device according to one of claims 1 to 7, a method of pumping a high viscosity fluid according to one of claims 8, 9 and the use of the device according to the invention in an installation for pumping a high viscosity crude oil according to one of claims 10 at 12.

Afin de mieux faire comprendre l'invention, on va décrire, à titre d'exemple nullement limitatif, en se référant aux figures jointes en annexes, un mode de réalisation d'un dispositif suivant l'invention, dans le cas d'exploitation d'un gisement de pétrole à haute viscosité.In order to better understand the invention, there will be described, by way of nonlimiting example, with reference to the attached figures, an embodiment of a device according to the invention, in the case of exploitation of a high viscosity oil deposit.

La figure 1 représente une vue en coupe partielle du dispositif mélangeur.Figure 1 shows a partial sectional view of the mixing device.

La figure 2 représente une perspective de l'arbre rotatif du mélangeur permettant de mieux décrire la disposition respective des pales.Figure 2 shows a perspective of the rotating shaft of the mixer to better describe the respective arrangement of the blades.

La figure 3 représente un graphique donnant la viscosité du pétrole et du mélange obtenu en fonction de la température.FIG. 3 represents a graph giving the viscosity of the oil and of the mixture obtained as a function of the temperature.

La figure 4 représente le schéma d'une installation de pompage de pétrole brut comportant le mélangeur.FIG. 4 represents the diagram of a crude oil pumping installation comprising the mixer.

La figure 5 représente une variante de la précédente installation de pompage.FIG. 5 represents a variant of the previous pumping installation.

La figure 6 représente une autre variante de l'installation de pompage.Figure 6 shows another variant of the pumping installation.

Sur la figure 1, le mélangeur 1 est incorporé à un carter 12 solidaire du corps de la pompe non représentée sur cette figure. Le conduit 8 met en communication la réserve de pétrole brut avec l'entrée 2 du corps 17 du mélangeur 1. Un orifice 9 met en communication le canal 10 avec l'entrée 2 du mélangeur. Le canal 10 est notamment situé dans la paroi du carter 12.In FIG. 1, the mixer 1 is incorporated into a casing 12 secured to the body of the pump, not shown in this figure. The conduit 8 puts the crude oil reserve in communication with the inlet 2 of the body 17 of the mixer 1. An orifice 9 puts the channel 10 in communication with the inlet 2 of the mixer. The channel 10 is in particular located in the wall of the casing 12.

La sortie 3 du corps 17 du mélangeur 1 communique avec l'entrée 13 de la pompe centrifuge dont la première roue est référencée 14.The outlet 3 of the body 17 of the mixer 1 communicates with the inlet 13 of the centrifugal pump, the first wheel of which is referenced 14.

Un arbre cylindrique 4 est guidé à ses deux extrémités par le palier 6 et un moyen de connexion 5 avec l'arbre de la pompe centrifuge.A cylindrical shaft 4 is guided at its two ends by the bearing 6 and a connection means 5 with the shaft of the centrifugal pump.

L'arbre 4 comporte des paires de pales 7 et 7a, symétriques par rapport à l'axe de l'arbre 4 et situées dans la même section. Dans cette réalisation, l'arbre est équipé de douze paires de pales disposées sur la longueur de l'arbre de façon à ce que le bord supérieur d'une pale soit sensiblement dans la même section que le bord inférieur de la pale adjacente. Ainsi, chaque volume de révolution engendré par la rotation d'une paire de pales est sensiblement adjacent avec le suivant.The shaft 4 comprises pairs of blades 7 and 7a, symmetrical with respect to the axis of the shaft 4 and located in the same section. In this embodiment, the shaft is equipped with twelve pairs of blades arranged along the length of the shaft so that the upper edge of a blade is substantially in the same section as the lower edge of the blade adjacent. Thus, each volume of revolution generated by the rotation of a pair of blades is substantially adjacent to the next.

Les pales sont inclinées d'un angle i aigu par rapport à l'axe de l'arbre orienté suivant la direction de l'écoulement, c'est-à-dire dans le sens de la flèche 15, le sens de rotation de l'arbre étant indiqué par la flèche 16. Ce mode d'orientation des pales relativement au sens de rotation de l'arbre et au sens de circulation des fluides dans le mélangeur, procure un effort réactif sur l'arbre dans la même direction que la circulation. Cet effort est la composante axiale de la résultante des efforts réactifs sur chaque pale. En effet, la mise en rotation de ces hélices que constitue l'ensemble des pales, a tendance à repousser le flux dans le sens contraire à sa circulation. Dans cette disposition de profil, on peut comparer le mélangeur à une hélice répulsive. Cette disposition favorise l'action de brassage des fluides dans le mélangeur pour obtenir un mélange homogène.The blades are inclined at an acute angle i with respect to the axis of the shaft oriented in the direction of flow, that is to say in the direction of arrow 15, the direction of rotation of the 'shaft being indicated by arrow 16. This mode of orientation of the blades relative to the direction of rotation of the shaft and the direction of circulation of the fluids in the mixer, provides a reactive force on the shaft in the same direction as the circulation. This force is the axial component of the result of the reactive forces on each blade. Indeed, the rotation of these propellers that constitute all of the blades, tends to push the flow in the opposite direction to its circulation. In this profile arrangement, the mixer can be compared to a repelling propeller. This arrangement promotes the mixing action of the fluids in the mixer to obtain a homogeneous mixture.

La section des pales peut ne pas être inclinée telle que ci-dessus. Dans certain cas d'utilisation simplifiée, les pales peuvent être notamment plates et leur largeur disposée parallèlement à l'axe de l'arbre, c'est-à-dire que l'angle i est nul. Les pales peuvent être également de forme sensiblement cylindrique. D'une manière plus générale, on pourra dire que dans cette réalisation le mélangeur ne sera ni répulsif vis-à-vis de l'écoulement, ni attractif. Le mode d'action est alors proche d'une action de cisaillement de la veine fluide en circulation.The blade section may not be tilted as above. In certain cases of simplified use, the blades may be in particular flat and their width disposed parallel to the axis of the shaft, that is to say that the angle i is zero. The blades can also be of substantially cylindrical shape. More generally, it can be said that in this embodiment the mixer will be neither repellent against flow, nor attractive. The mode of action is then close to a shearing action on the circulating fluid vein.

Dans aucune des formes de réalisations, les pales du mélangeur continu ne peuvent avoir une action procurant une accélération de l'écoulement, comme une hélice attractive, ou une roue de pompe centrifuge. Autrement dit, le mélangeur de notre invention est totalement différent d'un élément de compression, que celui-ci soit un élément de pompe, un élément de gavage ou un élément d'amorçage. Au contraire, le mélangeur de notre invention procure une chute de pression, généralement minime mais quand même sensible.In none of the embodiments, the blades of the continuous mixer cannot have an action providing an acceleration of the flow, such as an attractive propeller, or a centrifugal pump wheel. In other words, the mixer of our invention is totally different from a compression element, whether this is a pump element, a booster element or a priming element. On the contrary, the mixer of our invention provides a pressure drop, generally minimal but still noticeable.

Les paires de pales sont réparties sur la périphérie de l'arbre avec un décalage angulaire de 120°. Ainsi, la quatrième pale a la même position angulaire que la première définissant alors un ensemble de trois paires de pales. La réalisation représentée comporte donc quatre de ces ensembles.The pairs of blades are distributed over the periphery of the shaft with an angular offset of 120 °. So the fourth blade has the same angular position as the first then defining a set of three pairs of blades. The embodiment shown therefore comprises four of these sets.

Le nombre ou la disposition des pales peuvent être différents. En effet, en fonction de la nature des fluides et de leur débit dans le mélangeur, on peut être amené à augmenter ou diminuer le nombre de pales, et même à disposer plus de deux pales dans la même section transversale. Dans ce cas, elles seront réparties régulièrement à la périphérie de l'arbre. De plus, la valeur de l'angle i peut être variable mais inférieur ou égal à 90°, compte tenu des repères indiqués plus haut.The number or arrangement of the blades may be different. Indeed, depending on the nature of the fluids and their flow in the mixer, it may be necessary to increase or decrease the number of blades, and even to have more than two blades in the same cross section. In this case, they will be distributed regularly around the periphery of the tree. In addition, the value of the angle i can be variable but less than or equal to 90 °, taking into account the references indicated above.

La figure 2 montre en perspective partielle la disposition ainsi obtenu dans la réalisation préférentielle.Figure 2 shows in partial perspective the arrangement thus obtained in the preferred embodiment.

Le corps 17 du mélangeur comporte des déflecteurs 11 disposés suivant des génératrices du volume intérieur cylindrique du corps. Cette réalisation comporte quatre déflecteurs répartis à 90°. Ces déflecteurs peuvent être réalisés de manières multiples et diverses, leur rôle principal étant de redresser la veine fluide en favorisant les turbulences crées par les pales tout en laissant circuler le fluide entre l'entrée et la sortie.The body 17 of the mixer comprises deflectors 11 arranged along generatrices of the cylindrical interior volume of the body. This embodiment comprises four deflectors distributed at 90 °. These deflectors can be produced in multiple and diverse ways, their main role being to straighten the fluid stream by promoting the turbulence created by the blades while allowing the fluid to circulate between the inlet and the outlet.

Sur la figure 3, on a tracé trois courbes A, B et C donnant la variation de viscosité en centipoise en fonction de la température en degré Celsius.In FIG. 3, three curves A, B and C have been plotted giving the variation in viscosity in centipoise as a function of the temperature in degrees Celsius.

La courbe A concerne un pétrole brut lourd anhydre.Curve A relates to anhydrous heavy crude oil.

La courbe B donne la viscosité d'une émulsion constitué par 60% du pétrole lourd de la courbe A et de 40% d'eau, l'ensemble ayant traversé le dispositif mélangeur de l'invention avec un débit de 2500 l/heure et pour une vitesse de rotation du mélangeur de 3000 tr/min.Curve B gives the viscosity of an emulsion consisting of 60% of the heavy petroleum of curve A and 40% of water, the assembly having passed through the mixing device of the invention with a flow rate of 2500 l / hour and for a mixer rotation speed of 3000 rpm.

La courbe C représente la viscosité d'un mélange obtenu dans un récipient à partir de la même proportion de pétrole brut et d'eau.Curve C represents the viscosity of a mixture obtained in a container from the same proportion of crude oil and water.

On remarque l'efficacité du mélangeur dynamique par rapport à un mélangeur statique (courbe C).We notice the efficiency of the dynamic mixer compared to a static mixer (curve C).

La figure 4 représente une installation de pompage descendue dans un puits 20, en général cuvelé par un casing 21. Le puits est en communication avec un gisement de pétrole visqueux. Ce pétrole s'écoule dans le puits. La pompe de l'installation est plongée dans le pétrole 22 à une profondeur adaptée en fonction notamment des caractéristiques du gisement, de la configuration de la complétion et du niveau statique et dynamique de l'effluent.FIG. 4 represents a pumping installation lowered into a well 20, generally cased by a casing 21. The well is in communication with a viscous oil deposit. This oil flows into the well. The installation pump is immersed in petroleum 22 to a suitable depth depending in particular on the characteristics of the deposit, the configuration of the completion and the static and dynamic level of the effluent.

La partie inférieure de l'installation se décompose ainsi :

  • 23 indique le conduit d'alimentation en pétrole brut,
  • 24 indique le mélangeur continu,
  • 25 indique la pompe,
  • 26 indique le moteur hydraulique d'entraînement de la pompe et du mélangeur.
The lower part of the installation breaks down as follows:
  • 23 indicates the crude oil supply duct,
  • 24 indicates the continuous mixer,
  • 25 indicates the pump,
  • 26 shows the hydraulic drive motor for the pump and the mixer.

La partie supérieure 27 se compose de tubes concentriques, assemblés jusqu'en surface où sont situés notamment une installation d'injection 28 du fluide moteur, une sortie d'une conduite de collecte 29 d'une partie du fluide moteur, une sortie d'une conduite de collecte 30 du mélange comprimé, une sortie d'une conduite de dégazage 31 et un départ' de la conduite d'injection 35 du fluide moteur.The upper part 27 is made up of concentric tubes, assembled to the surface where there are located in particular an installation 28 for injecting the working fluid, an outlet from a collecting pipe 29 for a portion of the working fluid, an outlet for a line 30 for collecting the compressed mixture, an outlet from a degassing line 31 and a departure from the line 35 for injecting the working fluid.

La conduite 35 relie l'installation d'injection 28 à l'entrée 33 du moteur hydraulique.Line 35 connects the injection system 28 to the inlet 33 of the hydraulic motor.

La conduite 31 est une conduite annulaire définie par le puits et l'extérieur des tubulaires et des carters de l'installation de pompage. Cette conduite relie directement la réserve de pétrole brut à la surface et permet de collecter en surface le gaz tout en laissant le pétrole se dégazer naturellement. Plus le pétrole 22 sera dégazé, meilleur sera le rendement de l'installation de pompage.Line 31 is an annular line defined by the well and the outside of the tubulars and casings of the pumping installation. This pipe directly connects the crude oil reserve to the surface and allows the gas to be collected on the surface while allowing the oil to degas naturally. The more the oil 22 is degassed, the better the efficiency of the pumping installation.

La conduite 30 relie la sortie de la pompe 34 à la surface.Line 30 connects the outlet of pump 34 to the surface.

La conduite 29 relie la sortie 32 du moteur hydraulique.Line 29 connects outlet 32 of the hydraulic motor.

Un conduit 37 relie la sortie 32 du moteur à l'entrée 38 du mélangeur 24.A conduit 37 connects the outlet 32 of the motor to the inlet 38 of the mixer 24.

Le conduit d'alimentation 23 comporte deux tubes concentriques 40 et 41 formant chicanes afin de favoriser le dégazage du brut. Celui-ci pénètre dans le conduit par les perforations 39, passe dans l'espace l'annulaire défini par les tubes 40 et 41 puis remonte dans le tube 41 pour arriver à l'entrée 38 du mélangeur.The supply conduit 23 comprises two concentric tubes 40 and 41 forming baffles in order to promote the degassing of the crude. This enters the conduit through the perforations 39, passes through the annular space defined by the tubes 40 and 41 and then back up into the tube 41 to arrive at the inlet 38 of the mixer.

Les arbres rotatifs 42, 43 et 44 respectivement du mélangeur, de la pompe et du moteur, sont liés en rotation, c'est-à-dire que la rotation de l'arbre du moteur entraîne la rotation de l'arbre de la pompe et de l'arbre du mélangeur. Ces trois axes peuvent ne pas être confondus et leurs vitesses peuvent ne pas être identiques.The rotary shafts 42, 43 and 44 respectively of the mixer, of the pump and of the motor, are linked in rotation, that is to say that the rotation of the motor shaft causes the rotation of the pump shaft and the mixer shaft. These three axes may not be confused and their speeds may not be identical.

Le moteur 26 peut être du type turbine ou volumétrique, par exemple suivant le principe Moineau. La circulation du fluide moteur dans le moteur peut se faire de bas en haut ou l'inverse.The motor 26 can be of the turbine or volumetric type, for example according to the Moineau principle. The circulation of the working fluid in the engine can be done from bottom to top or the reverse.

La pompe peut être du type centrifuge mono ou multi-étagée ou du type volumétrique par exemple suivant le principe Moineau.The pump can be of the single or multi-stage centrifugal type or of the volumetric type for example according to the Moineau principle.

En illustration, les dimensions de la triple complétion concentrique descendue dans le cuvelage 21 en casing 9 5/8", peuvent être : casing ou tubing 7" pour la conduite 30, tubing 4 1/2" ou 5" pour la conduite 29 et tubing 2" ou 2 7/8" pour la conduite 35.In illustration, the dimensions of the concentric triple completion lowered into the casing 21 in casing 9 5/8 ", can be: casing or tubing 7" for line 30, tubing 4 1/2 "or 5" for line 29 and tubing 2 "or 2 7/8" for the pipe 35.

Dans une première variante représentée sur la figure 5, l'installation est simplifiée du point de vue du nombre de conduites par rapport à la réalisation préférentielle de la figure 4 où l'on utilise trois conduites concentriques 30, 29, 35 dans le puits 20, c'est-à-dire une complétion triple. En effet, dans les cas où le pétrole brut ne dégaze pas, on peut installer sur le corps inférieur de l'ensemble de pompage, un élément d'étanchéité type packer 45 entre la conduite d'alimentation en pétrole et les parois du puits. Ce packer isole la zone de réservoir et permet l'utilisation de la conduite annulaire 46 supérieure audit packer pour la remontée du mélange de la sortie 34 de la pompe jusqu'en surface. La complétion comporte alors deux tubes 29 et 35 pour respectivement la remontée d'une partie du fluide moteur et l'injection du fluide moteur.In a first variant shown in Figure 5, the installation is simplified from the point of view of the number of pipes compared to the preferred embodiment of Figure 4 where three concentric pipes 30, 29, 35 are used in the well 20 , that is, a triple completion. Indeed, in cases where the crude oil does not degas, one can install on the lower body of the pumping assembly, a packer type sealing element 45 between the oil supply pipe and the walls of the well. This packer isolates the reservoir area and allows the use of the annular pipe 46 above said packer for the ascent of the mixture from the outlet 34 of the pump to the surface. The completion then comprises two tubes 29 and 35 for respectively raising a portion of the working fluid and injecting the motor fluid.

Une seconde variante de l'installation de pompage est représentée sur la figure 6. Il s'agit ici de faire remonter ensemble le mélange pompé et la partie du fluide moteur. Les sorties 32 et 34 respectivement du moteur et de la pompe communiquent dans une seule et même conduite 47. Cette conduite est reliée en surface à une installation 48 adaptée à la séparation du pétrole brut, du fluide moteur et des autres fluides du mélange si ceux-ci ne sont pas le fluide moteur. En sortie de l'installation de séparation, une conduite 49 récupère le fluide moteur pour le recycler dans l'installation 28 d'injection.A second variant of the pumping installation is shown in FIG. 6. This involves bringing together the pumped mixture and the part of the working fluid. The outputs 32 and 34 respectively of the motor and of the pump communicate in a single line 47. This line is connected at the surface to an installation 48 suitable for the separation of crude oil, working fluid and other fluids from the mixture if those - these are not the working fluid. At the outlet of the separation installation, a pipe 49 collects the working fluid to recycle it in the injection installation 28.

Les conduites 29, 30 et 35 peuvent ne pas être concentriques, en effet l'art antérieur connaît les complétions multiples non concentriques, c'est-à-dire à l'aide de tubes parallèles dans le puits 20.The lines 29, 30 and 35 may not be concentric, in fact the prior art knows the multiple non-concentric completions, that is to say by means of parallel tubes in the well 20.

On ne sortira pas du cadre de cette invention si le fluide de viscosité plus faible admis à l'entrée du mélangeur par l'orifice 9 est différent du fluide moteur utilisé pour la motorisation de l'installation de pompage. De plus ce fluide de viscosité plus faible peut comporter plusieurs constituants adaptés à favoriser le mélange. Dans ce cas on pourra utiliser une autre ligne d'alimentation séparée et reliée à la surface.It will not depart from the scope of this invention if the lower viscosity fluid admitted to the inlet of the mixer through the orifice 9 is different from the working fluid used for the motorization of the pumping installation. In addition, this lower viscosity fluid may include several constituents adapted to promote mixing. In this case we can use another separate supply line and connected to the surface.

Le ou les fluide(s) mélangé(s) au fluide de haute viscosité peuvent être d'origine minérale ou organique. Le mélange obtenu par le mélangeur selon l'invention sera une émulsion et/ou une dilution.The fluid (s) mixed with the high viscosity fluid may be of mineral or organic origin. The mixture obtained by the mixer according to the invention will be an emulsion and / or a dilution.

Les proportions des constituants du mélange peuvent être variables en fonction des caractéristiques du gisement et de la nature des fluides en place. Dans le cas de l'installation de la figure 4 et de ses variantes figures 5 et 6, des moyens de régulation du débit de fluide injecté à l'entrée du mélangeur sont notamment situés entre la sortie du moteur et la conduite 10 ou 37.The proportions of the constituents of the mixture can be variable depending on the characteristics of the deposit and the nature of the fluids in place. In the case of the installation in FIG. 4 and its variants in FIGS. 5 and 6, means for regulating the flow of fluid injected at the inlet of the mixer are in particular located between the outlet of the engine and the pipe 10 or 37.

Le puits peut comporter une portion inclinée ou proche de l'horizontale. L'installation de pompage est alors en général descendue dans une partie du puits fortement inclinée.The well may include a portion that is inclined or close to the horizontal. The pumping installation is then generally lowered into a part of the well inclined well.

Claims (12)

  1. Device for pumping a mixture of fluids comprising:
    a) on the one hand, a body (17) provided with an inlet (2, 38) for the intake of at least two fluids and an outlet (3), the body enclosing a shaft (4, 47) linked to rotational drive means and having two blades (7, 7a), the profile of the blades being such that, without any flow of fluids, the rotation of the blades:
    - either produces a reaction force substantially parallel to the axis of rotation and along the direction from the inlet to the outlet of the said body (17),
    - or produces no reaction force of any notable size parallel to the axis of rotation;
    b) on the other hand, a pump (25) whose inlet is linked to the outlet (3) of the body (17).
  2. Device as claimed in claim 1, characterised in that it has at least one assembly of three stages of blades, each stage consisting of at least two blades having the same cylindrical volume in revolution, in that the said stages are offset at 120° relative to the axis of the said shaft and in that the cylindrical volumes generated by the revolution of each stage of blades are substantially adjacent.
  3. Device as claimed in claim 2, characterised in that a stage consists of two blades arranged at 180° on the shaft and in that the said device consists of four such assemblies.
  4. Device as claimed in one of the previous claims, characterised in that the pump (25) is a hydraulic pump whose shaft (43) is joined in rotation with the rotary shaft (4, 42) of the body (17).
  5. Device as claimed in claim 4, characterised in that the said pump is driven in rotation by a hydraulic motor (26) driven in rotation by the injection of a pressurised fluid.
  6. Device as claimed in claim 5, characterised in that some of this pressurised fluid injected into the motor is conveyed to the inlet (38) of the said body.
  7. Device as claimed in one of the previous claims, characterised in that the body (17) has on its inner part deflectors (11), the inner edges of which are substantially at a tangent to the volume of revolution of the blades when rotating.
  8. Method of pumping a high-viscosity fluid, characterised in that the said fluid (22) as well as at least one other fluid of a lower viscosity are conveyed to the inlet of a device such as that claimed in one of the previous claims.
  9. Method as claimed in claim 8, characterised in that a part of the driving fluid is conveyed to the inlet of the body (2, 38), this driving fluid being injected under pressure in order to drive in rotation the hydraulic motor driving the pump and the device in rotation.
  10. Use of a device as claimed in one of claims 1 to 7 in an installation for pumping a high-viscosity crude oil in a well (20) having a casing (21), characterised in that the installation has a pipe (8, 41, 40) for feeding the crude to the inlet of the device (38), a hydraulic motor (26) to rotate the pump (25) and the shaft (42) of the said body (17), a pipe (35) for injecting the driving fluid connecting the motor to an installation at the surface for injecting a fluid with a lower viscosity than that of crude, an outlet pipe (30) from the pump conveying the mixture to the surface and an outlet pipe (29) from the motor bringing some of the driving fluid to the surface, the remainder being fed to the inlet (38) of the said device via another pipe (37).
  11. Use as claimed in claim 10, characterised in that a sealing means (45) is positioned between the said crude feed pipe (9) and the walls of the well (20) defining an annular conduit (46) communicating up to the surface and in that the pumped mixture is raised to the surface through the annular conduit.
  12. Use as claimed in claim 10, characterised in that a single pipe (47) raises some of the said driving fluid and the said mixture and that this pipe communicates at the surface with an installation (48) for separating the crude oil and the driving fluid.
EP92402438A 1991-09-10 1992-09-07 Continuous mixing device, process and use in a pumping plant for high viscosity fluid Expired - Lifetime EP0532397B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9111297A FR2680983B1 (en) 1991-09-10 1991-09-10 CONTINUOUS MIXER DEVICE, METHOD AND USE IN A PUMP INSTALLATION OF A HIGH VISCOSITY FLUID.
FR9111297 1991-09-10

Publications (2)

Publication Number Publication Date
EP0532397A1 EP0532397A1 (en) 1993-03-17
EP0532397B1 true EP0532397B1 (en) 1995-12-13

Family

ID=9416906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402438A Expired - Lifetime EP0532397B1 (en) 1991-09-10 1992-09-07 Continuous mixing device, process and use in a pumping plant for high viscosity fluid

Country Status (5)

Country Link
US (1) US5320500A (en)
EP (1) EP0532397B1 (en)
CA (1) CA2077926C (en)
DE (1) DE69206726D1 (en)
FR (1) FR2680983B1 (en)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5611397A (en) * 1994-02-14 1997-03-18 Wood; Steven M. Reverse Moineau motor and centrifugal pump assembly for producing fluids from a well
US5417281A (en) * 1994-02-14 1995-05-23 Steven M. Wood Reverse Moineau motor and pump assembly for producing fluids from a well
DE4243132C1 (en) * 1992-12-19 1994-07-07 Klein Schanzlin & Becker Ag Turbo pump for conveying highly viscous substances
US5733113A (en) * 1993-01-07 1998-03-31 Grupping; Arnold W. J. Downhole roller vane motor and roller vane pump
US6080312A (en) * 1996-03-11 2000-06-27 Baker Hughes Limited Downhole cyclonic separator assembly
US6082452A (en) * 1996-09-27 2000-07-04 Baker Hughes, Ltd. Oil separation and pumping systems
US6068053A (en) * 1996-11-07 2000-05-30 Baker Hughes, Ltd. Fluid separation and reinjection systems
US6131655A (en) * 1997-02-13 2000-10-17 Baker Hughes Incorporated Apparatus and methods for downhole fluid separation and control of water production
AU7987298A (en) * 1997-06-24 1999-01-04 Baker Hughes Incorporated Cyclonic separator assembly
FR2771028A1 (en) * 1997-11-18 1999-05-21 Total Sa Device for separating components of a heterogeneous mixture
FR2771029B1 (en) * 1997-11-18 2000-01-28 Total Sa DEVICE FOR SEPARATING THE CONSTITUENTS OF A HETEROGENEOUS MIXTURE
CN1101255C (en) * 1998-01-21 2003-02-12 辽河石油勘探局勘察设计研究院 Emulsifying viscosity-reducing agent for superthick emulsified oil combustion
US6533557B1 (en) * 2000-08-11 2003-03-18 David G. Williams Positive displacement pump
US6799615B2 (en) * 2002-02-26 2004-10-05 Leslie G. Smith Tenon maker
US7153480B2 (en) * 2003-05-22 2006-12-26 David Robert Bickham Apparatus for and method of producing aromatic carboxylic acids
US10941353B2 (en) 2004-04-28 2021-03-09 Hydrocarbon Technology & Innovation, Llc Methods and mixing systems for introducing catalyst precursor into heavy oil feedstock
ES2583505T3 (en) * 2004-04-28 2016-09-21 Headwaters Heavy Oil, Llc Hydroprocessing method and system to improve heavy oil
US7449103B2 (en) * 2004-04-28 2008-11-11 Headwaters Heavy Oil, Llc Ebullated bed hydroprocessing methods and systems and methods of upgrading an existing ebullated bed system
MX274369B (en) * 2004-04-28 2010-03-05 Headwaters Heavy Oil Llc Fixed bed hydroprocessing methods and systems and methods for upgrading an existing fixed bed system.
CA2566250C (en) * 2004-05-13 2014-12-30 Petrosphear Corporation Improved separation of complex mixtures
US7850843B2 (en) * 2004-09-21 2010-12-14 Petroshear Corporation Separation of complex mixtures by shearing
US7503686B2 (en) * 2006-07-11 2009-03-17 Paradox Holding Company, Llc Apparatus and method for mixing fluids at the surface for subterranean treatments
US8034232B2 (en) * 2007-10-31 2011-10-11 Headwaters Technology Innovation, Llc Methods for increasing catalyst concentration in heavy oil and/or coal resid hydrocracker
US8142645B2 (en) * 2008-01-03 2012-03-27 Headwaters Technology Innovation, Llc Process for increasing the mono-aromatic content of polynuclear-aromatic-containing feedstocks
EP2234706B1 (en) * 2008-01-11 2013-12-18 Sulzer Pumpen AG Method and apparatus for mixing a pulp suspension
DE102010000546B4 (en) * 2010-02-25 2013-04-25 Schott Ag Apparatus for homogenizing a molten glass, stirring device and use
US8535028B2 (en) * 2010-03-02 2013-09-17 Cansonics Inc. Downhole positive displacement motor
CN103228355A (en) 2010-12-20 2013-07-31 雪佛龙美国公司 Hydroprocessing catalyst and method for making thereof
US9790440B2 (en) 2011-09-23 2017-10-17 Headwaters Technology Innovation Group, Inc. Methods for increasing catalyst concentration in heavy oil and/or coal resid hydrocracker
US9644157B2 (en) 2012-07-30 2017-05-09 Headwaters Heavy Oil, Llc Methods and systems for upgrading heavy oil using catalytic hydrocracking and thermal coking
US9533269B2 (en) * 2014-04-15 2017-01-03 Guangdong Xinbao Electric Joint-Stock Ltd. Multifunctional food processor
CN103962033A (en) * 2014-05-19 2014-08-06 苏州新协力特种工业模板有限公司 Industrial raw material stirring device
US11414608B2 (en) 2015-09-22 2022-08-16 Hydrocarbon Technology & Innovation, Llc Upgraded ebullated bed reactor used with opportunity feedstocks
US11414607B2 (en) 2015-09-22 2022-08-16 Hydrocarbon Technology & Innovation, Llc Upgraded ebullated bed reactor with increased production rate of converted products
US11421164B2 (en) 2016-06-08 2022-08-23 Hydrocarbon Technology & Innovation, Llc Dual catalyst system for ebullated bed upgrading to produce improved quality vacuum residue product
US11732203B2 (en) 2017-03-02 2023-08-22 Hydrocarbon Technology & Innovation, Llc Ebullated bed reactor upgraded to produce sediment that causes less equipment fouling
US11118119B2 (en) 2017-03-02 2021-09-14 Hydrocarbon Technology & Innovation, Llc Upgraded ebullated bed reactor with less fouling sediment
US10625227B2 (en) 2018-02-13 2020-04-21 Green Shield Products, Llc Mixer apparatus for mixing a high-viscosity fluid
CN108590610B (en) * 2018-04-13 2019-07-12 山东天厚石油科技有限责任公司 Viscous crude oil viscosity reduction emulsification treatment equipment
CN108590609B (en) * 2018-04-13 2019-05-10 新昌聚合机械科技有限公司 Oil well oil-pumping viscosity reduction process tank
CA3057131A1 (en) 2018-10-17 2020-04-17 Hydrocarbon Technology And Innovation, Llc Upgraded ebullated bed reactor with no recycle buildup of asphaltenes in vacuum bottoms
CN110067539B (en) * 2019-04-28 2024-04-09 河南福侨石油装备有限公司 Thick oil mixing device
CN110559918A (en) * 2019-09-30 2019-12-13 清远市进田企业有限公司 Stirrer

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD89393A (en) *
US4292011A (en) * 1979-08-20 1981-09-29 Kobe, Inc. Turbo pump gas compressor
CA1225634A (en) * 1984-07-30 1987-08-18 Adam J. Bennett Apparatus for dispersing a particulate material in a liquid
FR2594183A1 (en) * 1986-02-10 1987-08-14 Guinard Pompes METHOD AND INSTALLATION FOR CIRCULATING FLUIDS BY PUMPING
FR2599091B1 (en) * 1986-05-21 1990-10-26 Guinard Pompes METHOD AND INSTALLATION FOR CIRCULATING FLUIDS BY PUMPING
DE3623932A1 (en) * 1986-07-16 1988-01-21 Schneider Friedhelm Kunststoff COMBINED MIXING AND CONVEYING DEVICE FOR HIGH VISCOSE LIQUIDS
US4838704A (en) * 1987-12-15 1989-06-13 Carver David L Mixer apparatus
US5211924A (en) * 1988-02-29 1993-05-18 Amoco Corporation Method and apparatus for increasing conversion efficiency and reducing power costs for oxidation of an aromatic alkyl to an aromatic carboxylic acid
US4941752A (en) * 1988-04-25 1990-07-17 Quantum Technologies, Inc. Mixing equipment and methods
JPH0763601B2 (en) * 1989-01-13 1995-07-12 鐘淵化学工業株式会社 Stirrer for viscous substances

Also Published As

Publication number Publication date
DE69206726D1 (en) 1996-01-25
CA2077926C (en) 2005-07-05
FR2680983B1 (en) 1993-10-29
CA2077926A1 (en) 1993-03-11
FR2680983A1 (en) 1993-03-12
US5320500A (en) 1994-06-14
EP0532397A1 (en) 1993-03-17

Similar Documents

Publication Publication Date Title
EP0532397B1 (en) Continuous mixing device, process and use in a pumping plant for high viscosity fluid
US5733113A (en) Downhole roller vane motor and roller vane pump
US5516360A (en) Abrasion resistant gas separator
US8141625B2 (en) Gas boost circulation system
RU2409767C2 (en) Procedure for double-phase well fluid pumping out and device for its implementation (versions)
US8397811B2 (en) Gas boost pump and crossover in inverted shroud
CA2417367C (en) Below motor well fluid separation and conditioning
CN1249355C (en) Method and apparatus for pumping a material and a rotor for use in connection therewith
US20110255951A1 (en) Axial Thrust Balanced Impeller For Use With A Downhole Electrical Submersible Pump
US6561777B2 (en) Downhole roller vane motor and roller vane pump
JPH08506154A (en) How to reduce water in an oil well
EP3194713B1 (en) System and method for gas extraction from a well
WO2015150353A1 (en) Stirring propeller
EP2516793A1 (en) Downhole tool for borehole cleaning or for moving fluid in a borehole
FR2787838A1 (en) Jet pumping device comprises injection nozzle which rotates engine fluid during injection
CA2320927C (en) Cell for pumping polyphasic effluent and pump comprising at least one of said cells
US20100061849A1 (en) Froth handling pump
EP0040129A1 (en) High capacity oil recovery device for cleaning the surface of rough waters
FR2553835A1 (en) FLUID COMPRESSION MACHINE WITH SEVERAL COMPRESSION STAGES IN SERIES
RU2241858C1 (en) Submersible pumping system
RU2387884C1 (en) Centrifugal separator of solid particles
FR2601084A1 (en) CENTRIFUGAL PUMP FOR DELIVERY OF GAS-CONTAINING FLUIDS
RU2777436C1 (en) Centrifugal gas separator
EP0360681B1 (en) Vortex pump wheel
FR2656035A1 (en) Device for pumping a liquid, and in particular a liquid having high viscosity

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19920928

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT

17Q First examination report despatched

Effective date: 19940902

ITF It: translation for a ep patent filed

Owner name: MARIETTI E GISLON S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19951213

REF Corresponds to:

Ref document number: 69206726

Country of ref document: DE

Date of ref document: 19960125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960314

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19951213

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050907