EP0917905B1 - Procédé et dispositif de compression diphasique pour le traitement d'un effluent pétrolier - Google Patents
Procédé et dispositif de compression diphasique pour le traitement d'un effluent pétrolier Download PDFInfo
- Publication number
- EP0917905B1 EP0917905B1 EP98402507A EP98402507A EP0917905B1 EP 0917905 B1 EP0917905 B1 EP 0917905B1 EP 98402507 A EP98402507 A EP 98402507A EP 98402507 A EP98402507 A EP 98402507A EP 0917905 B1 EP0917905 B1 EP 0917905B1
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- phase
- stage
- compression
- compression device
- fluid
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D31/00—Pumping liquids and elastic fluids at the same time
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/29—Mixing systems, i.e. flow charts or diagrams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/98—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
Definitions
- the present invention relates to a method for treating a petroleum effluent and a compression device biphasic for the implementation of the process.
- the invention finds in particular its application for fluids which are present under an essentially gaseous form and which are miscible or soluble in a fluid essentially liquid.
- the present invention allows in particular, through the same machine, both the compression of an acid gas and formation water from an oil deposit, and mixing them in an essentially liquid form, the acid gases being particularly soluble in formation water.
- the liquid mixture obtained can be sent to an area storage or reinjected into a production well or aquifer.
- the invention applies in particular to the treatment of a natural gas containing gases acids, carbon dioxide and / or hydrogen sulfide which are generally at least in part separated from natural gas. When present in small quantities, these acid gases separated can be released directly or after incineration in the atmosphere.
- the standards to fight against pollution being more and more restrictive, these discharges in the atmosphere are less and less tolerated, and it becomes necessary to find other solutions easy to implement, respecting these new standards, and this with minimum investment.
- the prior art describes various solutions for eliminating acid gases as in FR 2424472.
- One solution is to inject the acid gases individually into a deposit in using centrifugal or reciprocating compressors.
- Another way is to inject the acid gases with another fluid, for example formation water available at the level of the deposit.
- This solution presents in particular as an advantage of simultaneously eliminating the acid gases and the formation water considered to be two pollutants.
- the fluid from the production wells is separated into an oil phase which is recovered, an aqueous phase and a gaseous phase circulating respectively in conduits 1 and 2.
- the aqueous phase is stored in atmospheric tanks 3, while the phase gas containing the acid gases is treated in a unit 4 with amines so as to obtain a gas, without acid components, and a gas with a high content of acid components to a pressure close to atmospheric pressure.
- the gas fraction rich in acid gases is sent to a compressor 5, and the formation water is sent to a pump monophasic 6.
- the formation gas and water having separately acquired a level of given pressure are then mixed in a mixer 7.
- the mixing is carried out at a high pressure to facilitate the dissolution of gases in water, the amount of acid gases dissolved increasing with the pressure level.
- This mixture is in a form liquid, is then reinjected for example into an underground tank using a pump monophasic 8 adapted to pump liquid monophasic fluids.
- a pump monophasic 8 adapted to pump liquid monophasic fluids.
- the gas Upstream of the high pressure pump the gas must not only be completely dissolved in the liquid, but the NPSHA (Available height in relation to the vapor pressure of the gas) must be greater than NPSHR (Height required at the inlet of the pump in relation to the voltage steam).
- the present invention proposes to remedy the drawbacks of the prior art, by adopting a new approach which in particular makes it possible to minimize the number commonly used equipment.
- a two-phase compression device capable of communicate energy to several fluids, at least one of the fluids being soluble in at at least one other fluid, and also to simultaneously mix the fluids, so as to obtain at the outlet a fluid which is essentially or completely in the form liquid.
- the present invention relates to a two-phase compression device as described in claim 5.
- the two-phase compression device may include at least one input stage and / or at least one output stage, each of said stages comprising hydraulics suitable for pumping an essentially liquid fluid.
- the compression device can be formed of at least two sections, the first section for obtaining a mixture Mi having a pressure level Pi and the second section allowing to obtain from the mixture Mi a mixture Ms having a level of pressure Ps, a conduit for discharging the mixture Mi and a conduit for introducing the fluid Mi in the second section, said two sections being separated by a sealing device and the hydraulics of the two sections being mounted "back to back" so as to minimize axial thrust efforts.
- the two-phase compression device may include a device arranged between two compression stages and suitable for at least mixing the fluid essentially liquid and essentially gaseous fluid, for example in the case where these two fluids are introduced on stages of different ranks.
- the compression device can also include a processing unit and / or mixing of fluids, said treatment and / or mixing unit being connected to the compression by fluid inlet and outlet pipes, before treatment and after treatment.
- the processing unit includes a means of refrigeration inserted in the processing unit.
- the processing unit may include a cooling circuit of at least one part of the two-phase mixture taken from the two-phase compression device and / or part of the liquid phase from the two-phase compression device.
- the compression device includes, for example, means for determining parameters related to the fluid and / or its operation, means of calculation and data processing capable of modifying the speed of rotation of the two-phase compression and / or act on the efficiency of the refrigeration means and / or on the flow rate of the recycled fluid in the cooling circuit.
- the invention also relates to a method for treating a petroleum effluent as described in claim 1.
- the method may include a step of removing at least part of the mixing of fluids after passage through a number of stages m of the two-phase compression, a step of processing the removed part and a step of return after treatment to a stage of the compression device of rank higher than the row of the sampling stage.
- the invention is particularly applicable for the simultaneous transfer of acid gases and formation water to an underground reservoir.
- the present invention offers compared to the prior art as an advantage of simplify the devices necessary to achieve compression and mixing of several fluids, for example at least one essentially gaseous fluid and at least one fluid essentially liquid miscible with each other.
- the method according to the invention can be applied in all fields where it is sought to communicate energy simultaneously to a gas phase and a liquid phase, the gas phase being soluble in the liquid phase, the pressure values of the phases may be different.
- the example given below by way of illustration and in no way limitative relates to the transport of acid gases and water formation, the acid gases being soluble in the formation water.
- the mixing and dissolution of the acid gases in the formation water is based on physical phenomena which will be recalled below.
- the dissolution of an acid gas in water varies with pressure and temperature.
- the rate of dissolution expressed in volume units of gas per volume unit of liquid in the normal pressure and temperature conditions increase respectively when the pressure increases and when the temperature decreases.
- the dissolution will be carried out gradually taking into account the time of diffusion between phases, and the approach to an equilibrium condition can, therefore, be activated by an increase in the contact surfaces between the acid gases and the water training.
- Figure 2 shows schematically an example of implementation of the adapted method when the formation water and the acid gases have a pressure level close to the inlet of the device two-phase compression, the difference between the pressure levels being sufficient low to allow their introduction into the same floor.
- the pumping device 10 is connected by the conduit 11 to the device 12 which receives the acid gases from a source referenced 13 through line 14, and through line 16 water from training stored in a tank referenced 15.
- the acid gases can come from a treatment unit such as that described in the applicant's patents FR 2,605,241 and FR 2,616,087. At the output of these units of treatment, the acid gases have a pressure which can vary between 0.5 and 1.5 MPa and a temperature between -30 ° C and -10 ° C. In the case of amine processing units, the pressure value is of the order of 0.1 MPa and the temperature between 10 and 40 ° C.
- the device 12 is chosen to favor the at least partial dispersion of the gases acids in the form of bubbles in the liquid or at least partial of the liquid in the form droplets in the gas.
- the two-phase pumping or compression device 10 is provided with at least an evacuation duct 17 for the essentially liquid mixture.
- the pressure level of this mixing at the outlet of the compression device is sufficient to ensure its transfer to an aquifer or an underground reservoir referenced 18.
- the initial pressure value of the acid gases and the formation water can be measured by pressure sensors 19a, 19b disposed respectively at the outlet the processing unit 13 and the storage tank 15.
- the two-phase compression device 10 comprises at least one stage of pumping comprising an impeller and a rectifier referenced li and Ri in the figures following.
- the impeller and rectifier hydraulics have specific characteristics, adapted to communicate energy to a two-phase fluid comprising at least one gaseous phase and at least one liquid phase, the ratio of volume flow rates of these two phases can vary from 0 to infinity, such as impellers heli-axial.
- the layout and characteristics of these hydraulics are similar to those described in one of the applicant's patents FR 2,333,139, FR 2,471,501, EP 0781929 and FR 2,665,224.
- Such a device also makes it possible to dissolve and mix the acid gases in the formation water to obtain an essentially liquid mixture or liquid.
- the number of compression stages used will depend on the pressure level required output.
- the two-phase compression device will be designed using impellers of an axial length less than that of the impellers usually used in the aforementioned applicant's devices as well as a greater number impellers so as to maintain the same overall performance (same pressure output for the same total axial length).
- impellers of an axial length less than that of the impellers usually used in the aforementioned applicant's devices as well as a greater number impellers so as to maintain the same overall performance (same pressure output for the same total axial length).
- we will increase the number of times the gas pockets and macro bubbles that have formed inside an impeller can be reduced at the interface between organs rotating and static (impeller-rectifier and rectifier-impeller), in the form of micro-bubbles, with a diameter varying between a micron and a millimeter.
- FIG. 3 shows diagrammatically an example of a compression device 10 which comprises, in the present case, 4 compression stages E 1 to E 4 mounted in line.
- Each stage Ei of the system comprises an impeller li, followed by a rectifier Ri, the impeller li being integral with the rotation shaft 30, the index i designating the rank of the stage of two-phase compression, the stages being arranged in a casing 31.
- the two-phase compression device 10 has an opening 33 communicating with the fluid introduction conduit 11 and an inlet part 34 disposed upstream of the first impeller I1.
- the two-phase compression device may include a adapter, such as a volute 35, for transforming kinetic energy into potential energy to minimize energy losses at the outlet, connected to the conduit discharge 17 of the essentially liquid mixture.
- a adapter such as a volute 35
- the mixture thus produced M1 passes in the compression stages of higher rank in order to increase the pressure and intensify the mixture of acid gases in the formation water until reaching the total dissolution of acid gases.
- the Ms mixture formed by the acid gases dissolved in the formation water is evacuated by a conduit 17 in an essentially liquid or liquid form at a pressure Ps and a temperature Ts.
- the last pumping stage or stages of the compression can include hydraulics suitable for single-phase fluids, such as radial impellers well known to those skilled in the art.
- Examples adaptations of the output and input stages of the compression device are shown by way of illustration and in no way limitative in FIGS. 4A and 4B.
- FIGS. 4A and 4B schematize variants of the compression device where the characteristics of the input and / or output pumping stages are optimized and chosen according to the nature of the fluids.
- the acid gases have a pressure significantly higher than water formation
- the acid gases are introduced through a conduit 43 at a pressure level compression intermediate in the two-phase compression device 10, the device 12 no longer used. It then becomes advantageous to use, for the first stages of compression 40, adapted hydraulics (impellers, referenced 41 and rectifiers 42) when pumping liquid, for example, radial wheels, as shown schematically in Figure 4A.
- the outside diameter of the radial impellers, Dr can be greater than the outside diameter of the helical-axial impellers, Dm, in order to reduce the minimum number of single-phase stages.
- Figure 5 shows schematically a variant of the two-phase compression device composed of two sections 50, 51 where the compression stages are mounted "back to back", the two sections being separated by a sealing device 52, for example, a sealing at labyrinths.
- the mixture flows in section 30 in a direction opposite to that from section 31.
- the section 50 comprises several stages of compression Ei (li, Ri) followed by a volute 54.
- the mixture composed of acid gases and the formation water is sent to the first section 50 where it acquires a level of intermediate pressure Pi and where the at least partial dissolution of the acid gases is carried out.
- the partial mixture Mi is discharged through a conduit 55 located downstream of a volute 54.
- This Mi mixture from the first section 50 is then sent to the second section 51 of the compression device into which it is introduced by a conduit 56.
- the mixture compressed through the compression stages of the second section 51 is evacuated by a volute 57 then a conduit 58 corresponding to the high pressure outlet of the compression device. Going into the second section of the device compression, the pressure of the mixture Mi rises to a level Ps sufficient to achieve almost complete dissolution of the acid gases in the formation water until a essentially liquid form Mj.
- Such an arrangement has in particular the advantage of minimizing the efforts axial thrust acting on the shaft, in the case of high pressure applications.
- FIG. 6 represents an arrangement adapted to the case where the formation water is at a pressure level Pe, lower than the pressure level Pg of the acid gases.
- Water training is introduced by a low pressure input 60 into the first pumping stage while the acid gases are sent through a conduit 62 connected to a corresponding input 61 to a compression stage located downstream from the inlet stage.
- the gases are introduced from preferably at the level of the rectifier Ri of the pumping stage of rank i at the outlet of which the formation water has a pressure level Pe 'close to the inlet pressure level acid gases Pg.
- FIG. 7 details an example of a device 70 for introducing acid gases arranged downstream of the inlet 61 having both the functions of facilitating the mixing of the gas and the liquid and channel the mixture towards the inlet of an impeller adapted to the compression of the two-phase mixture.
- the device 70 is arranged between the impeller li of the pumping stage of row i consisting for example of a radial wheel and the two-phase compression stage E2 consisting a helical-axial wheel.
- the device 70 similar to a stator stage separating two radial wheels and known to those skilled in the art, essentially comprises a diffuser 71 for the transformation of kinetic energy into potential energy and a return channel 72.
- It also includes a part 73 comprising a passage 74 communicating with the conduit 62 for the introduction of acid gases and several channels 75, of very small diameter, drilled in the part 73. These channels open into the return channel 72 and can be regularly arranged in the radial plane.
- the part 73 is supported directly by the housing 31.
- the part 31 as well as all the internal parts of the device 70 constitute a cartridge mounted inside a cylindrical casing, not shown in the figure.
- Such a construction method is known to those skilled in the art.
- Acid gases are introduced into the two-phase compression device successively at the level of the external conduit 62, in the internal conduit 74 and finally in the return channel 72 through the channels 75.
- the device allows an intimate mixture of gas and liquid, increasing efficiency with the number of channels.
- FIG. 8 shows in detail an example of arrangement of the casing 31 of the compression 10 communicating with an auxiliary introduction conduit 80 for a fluid monophasic.
- An opening 81 is made for example at the level of the rectifier Rj of the stage of row j of the compression device. Downstream of the opening 81, a device 82 pierced with channels 83 of very small diameter makes it possible to introduce the monophasic fluid and to diffuse it in the two-phase mixture from the impeller Ij.
- the new mixture formed from the mixture two-phase and the single-phase external fluid from the rectifier Rj is directed to the impeller Ij + 1 of the row compression stage (j + 1).
- the impeller diameters of rows Ij and Ij + 1 are adapted to the change in volume flow rate due to the introduction of the fluid additional through conduit 80.
- the treatment will consist, for example, of stabilizing the dissolution or of cooling the acid-water gas mixture whose temperature rose during the compression of the even the compression of the mixture, but also the exothermic nature of the dissolution reaction.
- Other treatments and their associated devices may be imagined without departing from the scope of the invention.
- Figure 9 shows schematically an exemplary embodiment where the compression device 10 of Figure 5 is associated with a processing unit 90 arranged in series.
- the mixture Mi from the medium pressure outlet 55 is sent through a pipe 91 to the processing unit 90. Downstream of the processing unit 90, the mixture Mi is then sent via a conduit 92 to the medium pressure inlet 56 of the second part of the compression device.
- the residence times to be observed will possibly be defined from tests preliminary performed under real operating conditions. This will make it possible to predict the dissolution differences between the transient and equilibrium conditions, these differences can be expressed in time or in gas flow.
- the treatment / cooling unit may be designed so as to cool the two-phase mixture and / or part of the liquid phase taken from this mixture or still the liquid from the two-phase compression device or part of this liquid.
- FIGS. 10A and 10B schematize two exemplary embodiments of the processing device comprising means for withdrawing and recycling the liquid.
- the processing unit 90 comprises a static type mixer or dynamic 93 arranged on the duct 91, a pressure drop adjustment valve 94, a means 95 for extracting at least part of the liquid phase contained in the mixture biphasic circulating in the conduit 91, a conduit 96 and a pump 97 making it possible to send the liquid fraction extracted to be cooled, to a cooling device such as an exchanger 98 at the outlet of which the cooled liquid fraction is recycled via a line 99 to the mixer static 93 to be mixed with the fluid circulating in the conduit 91.
- a cooling device such as an exchanger 98 at the outlet of which the cooled liquid fraction is recycled via a line 99 to the mixer static 93 to be mixed with the fluid circulating in the conduit 91.
- the extraction means 95 are chosen to carry out the removal of at least one part of the liquid phase at a low point in the pipe.
- the extraction means 95 will allow to extract a fraction of the liquid phase at the periphery of the pipe 91.
- the pump 97 can be a single-phase pump of low head.
- FIG. 10B shows schematically another alternative embodiment where the removal of the liquid phase to be cooled is produced at high pressure on the liquid fluid coming from the compression.
- the processing unit comprises the static or dynamic mixer 93 placed on the conduit 91, means 100 for extracting a fraction of liquid from the device compression and which are connected to the heat exchanger 98 by a conduit 101, a valve 102 allowing the adjustment of the flow rate of liquid cooled in the heat exchanger 98, the cooled liquid being sent through a pipe 103 to the static mixer 93.
- the part of the liquid phase not withdrawn and corresponding substantially to the flow rate of the liquid circulating in the conduit 11 is discharged through a conduit 104.
- Recirculation of the cooled liquid to the pipe 91 is allowed during operation normal without the help of an additional pump due to the positive pressure difference between conduit 58 and conduit 55.
- the processing unit 90 can be fitted with other conduits 91b allowing the addition a fluid with the mixture Mi, for example additives mentioned above.
- FIG. 11 schematizes an example of generalization of the use of a two-phase compression device comprising two machine bodies CM 1 and CM 2 , forming the two-phase compression device and which are connected together by a conduit 123, suitable for example when there are several sources of fluids at different pressure levels.
- the second body CM 2 is associated with a processing device 116 according to an arrangement similar to that of FIG. 9.
- the fluid is for example in a multiphase form.
- the compression device is supplied by three sources of acid gases referenced respectively 110, 111 and 112 at pressures PG 3 , PG 2 and PG 1 , temperatures TG 3 , TG 2 and TG 1 and with for example PG 1 ⁇ PG 2 ⁇ PG 3 .
- the acid gases G 1 (112) and G 2 (111) are introduced into the first body CM 1 by conduits 113, 114 corresponding to different compression stages of the body, the ranks of which are determined according to the values of the pressures PG 1 and PG 2 .
- the acid gases G 3 (110) are sent via a pipe 115 to the treatment device 116.
- the liquid L 1, (117), is sent via a conduit 120 into the first body of CM 1 .
- the conduit 120 is directly connected to the first stage of the body CM 1 while the acid gases G 1 and G 2 are sent to pumping stages of higher rank according to a diagram similar to that of Figure 6.
- the liquid contained in the source L 2 (118) is sent directly to the second body CM 2 by a conduit 121, for example at its inlet stage.
- the mixture of fluids and their pressure gain is effected, for example, as follows:
- the pressure level PL 1 of the liquid L 1 increases until it reaches a pressure level substantially identical to that of the gas G 1 , PG 1 .
- the acid gases G are dissolved in the liquid L 1 at least partially, the mixture M obtained being at a pressure level P.
- the acid gases G 2 having a pressure PG 2 are introduced into the stage at the outlet from which the mixture M has a substantially identical pressure level.
- the mixture M ′ coming from the body CM 1 is introduced with the liquid L 2 having a pressure P L2 , through a conduit 123 in the second body CM 2 .
- the mixture Mi which is at an intermediate pressure level Pi is sent via a conduit 124 to the treatment device 116 in which it is mixed at least in part with the gas G 3 .
- the mixture M'i from the treatment device is then sent through a conduit 125 in the second part of the body CM 2 , passes through the various compression stages.
- an essentially liquid fluid Ms is discharged at a pressure level Ps via the outlet 126, for example in an aquifer.
- a manometric height diagram has been schematized (in ordered) - output volume (on the abscissa) - parameterized in speed (N), performance of the two-phase compression device.
- N parameterized in speed
- FIG. 12 a manometric height diagram has been schematized (in ordered) - output volume (on the abscissa) - parameterized in speed (N), performance of the two-phase compression device.
- On this diagram have been represented a desired operating point C, as well as two points, A and B, representing two cases of dysfunction.
- the operating point is outside the range of desired operation, it will be possible to act on the speed of rotation if the device has a variable speed drive, and possibly on the efficiency of the refrigeration or on the flow of recycled liquid depending on the design of the compression.
- the operating point B diagrams the opposite case.
- the compression device will preferably be equipped with a speed drive variable.
- the speed regulation can be done automatically or manually.
- the reduction in the number of equipment depends strongly on the application cases, mainly, the volumetric ratio of gas and liquid (GLR) and the pressure at the inlet of the compression device.
- Pressure inlet is approximately equal to the pressure downstream of the deacidification unit.
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
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Description
- si la valeur de cette différence est inférieure à une valeur fixée, on envoie les deux fluides à un même étage de compression diphasique du dispositif de compression,
- si la valeur de cette différence est supérieure à une valeur fixée, on envoie le fluide de plus basse pression à un étage du dispositif de compression de rang i et le fluide de plus haute pression à un étage de rang supérieur i+n, le nombre n étant déterminé en fonction de la différence de pression,
- la figure 1 schématise le procédé de la société Pan Canadian selon l'art antérieur,
- la figure 2 montre un dispositif de compression diphasique adapté pour mettre en oeuvre le procédé selon l'invention,
- la figure 3 schématise un exemple d'agencement d'étages de compression diphasique,
- les figures 4A et 4B représentent deux variantes de réalisation pour les étages d'entrée et de sortie du dispositif de pompage monophasique et de compression diphasique combinés,
- la figure 5 montre une autre variante pour le système de la figure 3,
- les figures 6, 7 et 8 schématisent une variante du procédé adaptée à des fluides de différentes pressions et leur mode d'introduction dans le dispositif de compression diphasique,
- la figure 9 schématise une variante de réalisation où il est possible d'effectuer un traitement du mélange des deux fluides au cours de l'opération de compression,
- les figures 10A et 10B représentent deux dispositifs de recyclage du liquide au travers de l'unité de réfrigération,
- la figure 11 représente une généralisation du principe selon l'invention appliqué pour plusieurs fluides liquides et gazeux présentant des valeurs de pression différentes avant l'entrée du dispositif, et
- la figure 12 représente un schéma possible de régulation du dispositif de compression.
- elle augmentera la capacité du liquide à dissoudre le gaz dans les conditions d'équilibre,
- elle permettra de s'approcher des conditions d'équilibre, compte tenu du temps de résidence dans le système de réfrigération,
- elle permettra une augmentation de la densité du mélange, paramètre favorable à la compression d'un mélange diphasique,
- elle permettra une réduction du rapport des débits volumiques de gaz et de liquide, paramètre également favorable à la compression d'un mélange diphasique.
- une plus grande efficacité et une réduction en volume de l'échangeur opérant à une pression élevée ou moyennement élevée,
- un accroissement du débit de liquide dans la zone de recyclage favorable à la dissolution du gaz dans le liquide.
- de mesurer différents paramètres :
- les valeurs de débit de la phase gazeuse et de la phase liquide avant leur entrée dans le dispositif de compression diphasique Qg et QI, pour chacun de mesurer les valeurs de la température et de pression associées Tg et Tl, Pg et Pl,
- en sortie du dispositif de compression des valeurs liées au liquide telles que sa pression Pm, sa température Tm, son débit Qm et sa densité pm,
- de mémoriser les paramètres caractéristiques des fluides gazeux et liquides en entrée du dispositif de compression par exemple la densité pour le fluide liquide, ρl, et la masse molaire Mg et le facteur isentropique yg pour le fluide gazeux,
- à partir de ces différentes mesures, des données précédemment mentionnées et d'un traitement des données approprié, de déterminer le point de fonctionnement du dispositif de compression et la courbe de vitesse correspondante, et
- en comparaison avec une valeur déterminée de vérifier que ce point de fonctionnement appartient à un domaine permis de fonctionnement ou un domaine optimal de fonctionnement.
- une plus grande sécurité en présence de gaz nocifs tels l'hydrogène sulfuré H2S,
- une réduction des coûts dans un environnement corrosif et / ou soumis à une forte pression.
- une pompe diphasique comportant 13 étages de compression. La pression de refoulement est déterminée par le dispositif de compression diphasique. Les mêmes conditions de pression sont utilisées pour les deux types de compression,
- deux valeurs de hauteur manométrique monophasique de 150 m et 300 m par étage de compression diphasique. La hauteur manométrique de compression diphasique est obtenue par le produit de la hauteur monophasique et de l'efficacité diphasique, cette dernière étant une fonction du GLR et du rapport des densités des phases,
- un débit liquide de 200 m3/Heure et un débit de gaz qui varie entre des valeurs correspondant à un GLR de 1 et un GLR de 15,
- une pression de 1 MPa abs en sortie d'un procédé de traitement par solvant physique et de 0,1 MPa abs en sortie d'un procédé de traitement par solvant chimique.
GLR du fluide à l'entrée du dispositif de compression diphasique : | 1 | 4 | 9 | 15 |
CAS I Traitement par solvant physique Hauteur manométrique par impulseur diphasique: 150 m | 2 | 2 | 1 | 1 |
CAS II Traitement par solvant physique Hauteur manométrique par impulseur diphasique: 300 m | 3 | 3 | 2 | 2 |
CAS III Traitement par solvant chimique Hauteur manométrique par impulseur diphasique: 150 m | 5 | 5 | 5 | 4 |
Claims (7)
- Procédé de traitement d'un effluent prétolier dans lequel on effectue les étapes suivantes:a) on sépare un effluent pétrolier issu d'un puits pétrolier en une phase huile, une phase aqueuse et une phase gazeuse,b) on traite la phase gazeuse pour produire des gaz acides et un gaz épuré en composés acides,
caractérisé en ce que:c) on rassemble la phase aqueuse de l'étape a) et les gaz acides produits à l'étape b) pour obtenir un fluide diphasique,d) on comprime le fluide diphasique obtenu à l'étape c) avec un dispositif de compression diphasique (10) comportant au moins un étage de compression diphasique comportant un impulseur et un redresseur pour dissoudre lesdits gaz acides dans ladite phase aqueuse et pour communiquer de l'énergie au fluide diphasique et ainsi obtenir un fluide essentiellement liquide. - Procédé selon la revendication 1, dans lequel on effectue l'étape suivante:e) on introduit le fluide essentiellement liquide obtenu à l'étape d) dans un réservoir souterrain.
- Procédé selon l'une des revendications 1 et 2, caractérisé en ce qu'à l'étape d), on effectue les étapes suivantes:f) on prélève du fluide diphasique du dispositif de compression diphasique (10),g) on refroidit une partie du fluide diphasique prélevé,h) on introduit ladite partie du fluide diphasique refroidi dans le dispositif de compression diphasique.
- Procédé selon l'une des revendications 1 à 3, caractérisé en ce qu'on régule la vitesse de rotation dudit dispositif de compression et/ou on contrôle l'efficacité de la réfrigération à l'étape g) et/ou on contrôle le débit de fluide réfrigéré à l'étape g).
- Dispositif de compression diphasique pour la mise en oeuvre du procédé selon l'une des revendications 1 à 4, comportant au moins un étage de compression diphasique comportant un impulseur et un redresseur, caractérisé en ce que le dispositif comporte un deuxième redresseur (70,80,81,82,83) disposé en amont dudit étage de compression diphasique et muni d'un élément (73,82) percé de plusieurs canaux (75,83) pour introduire et diffuser un fluide tel que des gaz acides dans le dispositif de compression diphasique (10), ledit étage de compression diphasique permettant de réaliser l'étape d).
- Dispositif de compression diphasique selon la revendication 5, caractérisé en ce que le dispositif de compression diphasique comporte un étage de pompage disposé en amont dudit deuxième redresseur, ledit étage de pompage permettant de pomper ladite phase aqueuse de l'étape a) et ledit élément permettant d'introduire lesdits gaz acides produits à l'étape b) dans le dispositif de compression diphasique (10).
- Dispositif de compression diphasique selon la revendication 5, caractérisé en ce que le dispositif de compression diphasique (10) comporte un deuxième étage de compression diphasique disposé en amont du deuxième redresseur, ledit deuxième étage de compression diphasique permettant de réaliser l'étape d), ledit élément permettant d'introduire un fluide liquide ou gazeux dans le dispositif de compression diphasique.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9714604A FR2771024B1 (fr) | 1997-11-19 | 1997-11-19 | Dispositif et procede de compression diphasique d'un gaz soluble dans un solvant |
FR9714604 | 1997-11-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0917905A1 EP0917905A1 (fr) | 1999-05-26 |
EP0917905B1 true EP0917905B1 (fr) | 2004-01-07 |
Family
ID=9513620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98402507A Expired - Lifetime EP0917905B1 (fr) | 1997-11-19 | 1998-10-08 | Procédé et dispositif de compression diphasique pour le traitement d'un effluent pétrolier |
Country Status (6)
Country | Link |
---|---|
US (2) | US6210126B1 (fr) |
EP (1) | EP0917905B1 (fr) |
CA (1) | CA2252022C (fr) |
DK (1) | DK0917905T3 (fr) |
FR (1) | FR2771024B1 (fr) |
NO (1) | NO318666B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8225872B2 (en) | 2006-10-19 | 2012-07-24 | Schlumberger Technology Corporation | Gas handling in a well environment |
Families Citing this family (11)
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FR2792678B1 (fr) | 1999-04-23 | 2001-06-15 | Inst Francais Du Petrole | Procede de recuperation assistee d'hydrocarbures par injection combinee d'une phase aqueuse et de gaz au moins partiellement miscible a l'eau |
TW531592B (en) * | 1999-09-09 | 2003-05-11 | Sanyo Electric Co | Multiple stage high pressure compressor |
US6773235B2 (en) | 1999-12-31 | 2004-08-10 | Shell Oil Company | Rotodynamic multi-phase flow booster pump |
JP2009008065A (ja) * | 2007-06-29 | 2009-01-15 | Hitachi Ltd | 圧縮機 |
NO328277B1 (no) | 2008-04-21 | 2010-01-18 | Statoil Asa | Gasskompresjonssystem |
EP2386767B1 (fr) * | 2010-05-11 | 2021-01-06 | Sulzer Management AG | Pompe hélico-axiale et procédé pour supporter un rotor dans une pompe hélico-axiale |
IT1401868B1 (it) * | 2010-08-31 | 2013-08-28 | Nuova Pignone S R L | Turbomacchina con stadio a flusso misto e metodo. |
FR3069290B1 (fr) * | 2017-07-19 | 2019-08-09 | Yves Charron | Machine rotodynamique comprenant des impulseurs helico radio axiaux avec controle du glissement interfacial |
FR3102685B1 (fr) | 2019-11-06 | 2021-10-29 | Ifp Energies Now | Procédé d’oligomérisation d’oléfines dans un réacteur d’oligomérisation |
FR3117127A1 (fr) | 2020-12-07 | 2022-06-10 | IFP Energies Nouvelles | Procédé d’hydrotraitement d’un flux liquide comprenant des hydrocarbures avec un flux gazeux comprenant de l’hydrogène |
FR3126423A1 (fr) | 2021-08-26 | 2023-03-03 | IFP Energies Nouvelles | Procédé d’hydroconversion de charges hydrocarbonées |
Family Cites Families (12)
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US2903248A (en) * | 1956-12-10 | 1959-09-08 | Leander H Walker | System of mixing liquiform ingredients |
DE2748160C2 (de) * | 1977-10-27 | 1984-06-07 | Brown Boveri Reaktor GmbH, 6800 Mannheim | Einrichtung zur Begasung von Primärkühlmittel einer wassergekühlten Kernreaktoranlage |
FR2424472A1 (fr) * | 1978-02-24 | 1979-11-23 | Inst Francais Du Petrole | Methode et dispositif pour transporter simultanement dans un meme conduit les constituants d'un fluide diphasique |
FR2534644B1 (fr) * | 1982-10-13 | 1986-10-03 | Inst Francais Du Petrole | Methode et dispositif d'ejection gaz-liquide servant a produire un ecoulement diphasique |
DE3345233C2 (de) * | 1983-12-14 | 1985-10-31 | Joh. Heinrich Bornemann GmbH & Co KG, 3063 Obernkirchen | Exzenterschneckenpumpe zum Fördern von Flüssigkeiten aus Bohrlöchern, insbesondere aus Erdöl-Bohrlöchern |
CA2107933C (fr) * | 1993-10-07 | 1998-01-06 | Denis Cote | Pompe avec plusieurs stages de pompage distincts pour pomper plusieurs liquides |
FR2724200A1 (fr) * | 1994-09-02 | 1996-03-08 | Technicatome | Station de pompage sous-marine a grande profondeur pour melange petrolier |
US5628616A (en) * | 1994-12-19 | 1997-05-13 | Camco International Inc. | Downhole pumping system for recovering liquids and gas |
FR2743113B1 (fr) * | 1995-12-28 | 1998-01-23 | Inst Francais Du Petrole | Dispositif de pompage ou de compression d'un fluide polyphasique a aubage en tandem |
US5722820A (en) * | 1996-05-28 | 1998-03-03 | Robbins & Myers, Inc. | Progressing cavity pump having less compressive fit near the discharge |
US5820354A (en) * | 1996-11-08 | 1998-10-13 | Robbins & Myers, Inc. | Cascaded progressing cavity pump system |
US5807087A (en) * | 1997-03-21 | 1998-09-15 | Tarby, Inc. | Stator assembly for a progressing cavity pump |
-
1997
- 1997-11-19 FR FR9714604A patent/FR2771024B1/fr not_active Expired - Fee Related
-
1998
- 1998-10-08 DK DK98402507T patent/DK0917905T3/da active
- 1998-10-08 EP EP98402507A patent/EP0917905B1/fr not_active Expired - Lifetime
- 1998-11-18 NO NO19985364A patent/NO318666B1/no not_active IP Right Cessation
- 1998-11-18 CA CA002252022A patent/CA2252022C/fr not_active Expired - Fee Related
- 1998-11-19 US US09/195,712 patent/US6210126B1/en not_active Expired - Lifetime
-
2001
- 2001-02-06 US US09/776,682 patent/US6305911B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8225872B2 (en) | 2006-10-19 | 2012-07-24 | Schlumberger Technology Corporation | Gas handling in a well environment |
Also Published As
Publication number | Publication date |
---|---|
NO318666B1 (no) | 2005-04-25 |
US20010005483A1 (en) | 2001-06-28 |
US6210126B1 (en) | 2001-04-03 |
CA2252022A1 (fr) | 1999-05-19 |
FR2771024B1 (fr) | 1999-12-31 |
EP0917905A1 (fr) | 1999-05-26 |
NO985364L (no) | 1999-05-20 |
FR2771024A1 (fr) | 1999-05-21 |
DK0917905T3 (da) | 2004-02-16 |
US6305911B2 (en) | 2001-10-23 |
CA2252022C (fr) | 2008-01-22 |
NO985364D0 (no) | 1998-11-18 |
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