EP0652801A1 - Device for continuously mixing liquid additives into a fluid - Google Patents

Device for continuously mixing liquid additives into a fluid

Info

Publication number
EP0652801A1
EP0652801A1 EP93920572A EP93920572A EP0652801A1 EP 0652801 A1 EP0652801 A1 EP 0652801A1 EP 93920572 A EP93920572 A EP 93920572A EP 93920572 A EP93920572 A EP 93920572A EP 0652801 A1 EP0652801 A1 EP 0652801A1
Authority
EP
European Patent Office
Prior art keywords
fluid
additives
stream
liquid
additive
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.)
Granted
Application number
EP93920572A
Other languages
German (de)
French (fr)
Other versions
EP0652801B1 (en
Inventor
Georges Poyet
Frédéric BADIER
Dominique Guillot
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.)
Sofitech NV
Compagnie des Services Dowell Schlumberger SA
Original Assignee
Sofitech NV
Compagnie des Services Dowell Schlumberger SA
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 Sofitech NV, Compagnie des Services Dowell Schlumberger SA filed Critical Sofitech NV
Publication of EP0652801A1 publication Critical patent/EP0652801A1/en
Application granted granted Critical
Publication of EP0652801B1 publication Critical patent/EP0652801B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • 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
    • B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
    • 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
    • B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
    • B01F25/31423—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction with a plurality of perforations in the circumferential direction only and covering the whole circumference
    • 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
    • B01F25/32—Injector mixers wherein the additional components are added in a by-pass of the main flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/24—Mixing of ingredients for cleaning compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/28—Mixing cement, mortar, clay, plaster or concrete ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/49—Mixing drilled material or ingredients for well-drilling, earth-drilling or deep-drilling compositions with liquids to obtain slurries
    • 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
    • B01F35/71—Feed mechanisms
    • B01F35/715—Feeding the components in several steps, e.g. successive steps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/87338—Flow passage with bypass
    • Y10T137/87346—Including mixing feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet
    • Y10T137/87587—Combining by aspiration

Definitions

  • the present invention relates to a device for continuously injecting, in a homogeneous manner, one or more liquid additives into a main fluid flowing in a conduit.
  • the additives are injected after a pre-dilution in a part derived from the main fluid stream.
  • FIG. 1 The best embodiment of the invention is described in FIG. 1 attached.
  • Each eductor is mounted as a bypass or "by-pass" and includes a tube (3) for admitting a liquid or semi-liquid additive (A).
  • a fluid part (F) is derived (f) by suction out of the main stream (F) and is mixed in the mixing chamber (4) with the additive injected in (3).
  • This mixture which therefore consists of the additive (A) pre-diluted in the fluid (F) is reintroduced (f) into the main stream.
  • the device according to the invention in FIG. 1 was used to evaluate the injection of a very viscous additive into a stream of cement slag.
  • the test was carried out with a marker product (CuS0 4 ) dispersed in the additive, and by recording the concentration of marker.
  • the same injection was also carried out, in a conventional manner, by a coaxial injection (that is to say injection of the additive by a coaxial conduit to the condu (1)) or by a lateral injection (i.e. - say injection through an open lateral duct in the duct (D).
  • a coaxial injection that is to say injection of the additive by a coaxial conduit to the condu (1)
  • a lateral injection i.e. - say injection through an open lateral duct in the duct (D).
  • the VIP Mixer is a rotating vortex mixer, continuously operating, disclosed in European Patent Application No. 91200440.5 has.
  • the invention is also particularly useful for the preparation of mud or drilling fluids.
  • Another particularly promising aspect of application concerns the continuous dosing of additives in separation fluids or "spacers" in the petroleum industry.
  • the invention allows for the first time to continuously vary the properties of the "spacer”, instead of varying them in stages. This results in a very significant difference in terms of the quality of the operation.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Nozzles (AREA)

Abstract

A device for continuously injecting liquid additives into a fluid. The device includes a jet eductor system for prediluting the additives, and may be used in the oil industry, oil-dependent industries, building construction, etc.

Description

Mélangeur d'additifs liquides en continu dans un fluideContinuous liquid additive mixer in a fluid
La présente invention concerne un dispositif permettant d'injecter en continu, et de manière homogène, un ou plusieurs additifs liquides dans un fluide principal circulant dans un conduit.The present invention relates to a device for continuously injecting, in a homogeneous manner, one or more liquid additives into a main fluid flowing in a conduit.
Notamment dans l'industrie pétrolière, parapetroliere, du nettoyage industriel et de la construction, un problème sérieux et bien connu depuis très longtemps réside dans la grande difficulté d'injecter avec précision une quantité d'additifs liquides ou semi-liquides dans un fluide principal, en continu.Particularly in the petroleum, parapetroliere, industrial cleaning and construction industry, a serious problem well known for a very long time lies in the great difficulty of accurately injecting a quantity of liquid or semi-liquid additives into a main fluid. , continuously.
Il est en effet impératif de doser avec précision les additifs, c'est-à-dire de contrôler très précisément le débit, la quantité et l'homogénéité des injections réalisées.It is indeed imperative to precisely dose the additives, that is to say to control very precisely the flow rate, the quantity and the homogeneity of the injections carried out.
Cela est devenu d'autant plus important que les modèles mathématiques, les capteurs, les logiciels d'opération et l'informatique ont permis d'atteindre une très grande précision dans les opérations, la limite de cette précision étant de plus en plus souvent celle imposée par l'injection des additifs. Selon la présente invention, les additifs sont injectés après une pré-dilution dans une partie dérivée du courant principal de fluide.This became all the more important as the mathematical models, the sensors, the operating software and the data processing made it possible to reach a very high precision in the operations, the limit of this precision being more and more often that imposed by the injection of additives. According to the present invention, the additives are injected after a pre-dilution in a part derived from the main fluid stream.
Tous les dipositifs permettant une telle opération de dérivation et de pré-dilution conviennent à la mise en oeuvre de l'invention.All the devices allowing such a derivation and pre-dilution operation are suitable for implementing the invention.
Le meilleur mode de réalisation de l'invention est décrit sur la Fig. 1 annexée.The best embodiment of the invention is described in FIG. 1 attached.
Il s'agit d'un système à éducteurs à jet (2) disposés radialement autour du conduit (1) dans lequel circule l fluide principal (F) .It is a system with jet eductors (2) arranged radially around the duct (1) in which the main fluid (F) circulates.
Chaque educteur est monté en dérivation ou "by-pass" et comprend une tubulure (3) d'admission d'un additif liquide ou semi-liquide (A) .Each eductor is mounted as a bypass or "by-pass" and includes a tube (3) for admitting a liquid or semi-liquid additive (A).
Le principe de 1'educteur à jet est connu. Une partie fluide (F) est dérivée (f) par aspiration hors du courant principal (F) et est mélangée dans la chambre mélange (4) avec l'additif injecté en (3). Ce mélange, qui consiste donc en l'additif (A) pré-dilué dans le fluide (F) est réintroduit (f) dans le courant principal. On constate une amélioration très sensible de la précision des injections, par rapport à des systèmes classiques.The principle of the jet reducer is known. A fluid part (F) is derived (f) by suction out of the main stream (F) and is mixed in the mixing chamber (4) with the additive injected in (3). This mixture, which therefore consists of the additive (A) pre-diluted in the fluid (F) is reintroduced (f) into the main stream. There is a very significant improvement in the precision of injections, compared to conventional systems.
Exemple : Laitier de Ciment On a utilisé le dispositif selon l'invention de la Fig 1 pour évaluer l'injection d'un additif très visqueux dans un courant de laitier de ciment.Example: Cement Slag The device according to the invention in FIG. 1 was used to evaluate the injection of a very viscous additive into a stream of cement slag.
L'essai a été conduit avec un produit marqueur (CuS04) dispersé dans l'additif, et par l'enregistrement de la concentration en marqueur.The test was carried out with a marker product (CuS0 4 ) dispersed in the additive, and by recording the concentration of marker.
On a également effectué la même injection, de manière classique, par une injection coaxiale (c'est-à-dire injection de l'additif par un conduit coaxial au condu (1)) ou par une injection latérale (c'est-à-dire injection par un conduit latéral ouvert dans le condui (D).The same injection was also carried out, in a conventional manner, by a coaxial injection (that is to say injection of the additive by a coaxial conduit to the condu (1)) or by a lateral injection (i.e. - say injection through an open lateral duct in the duct (D).
Dans les trois cas, l'injection a été effectuée dans l conduit de suction de fluide d'un mélangeur à vortex d type VIP Mixer(™) . Les caractéristiques du laitier ainsi préparé étaient les suivantes : .In all three cases, the injection was made into the fluid suction line of a VIP Mixer (™) vortex mixer. The characteristics of the slag thus prepared were as follows:.
- débit : 4 bpm- flow: 4 bpm
- densité : 15 ppg - débit de suction d'eau (à l'entrée du VIP Mixer) : 2, bpm.- density: 15 ppg - water suction rate (at the entrance to the VIP Mixer): 2, bpm.
Les résultats sont représentésThe results are shown
- sur la Fig. 2 pour l'injection coaxiale- in Fig. 2 for coaxial injection
- sur la Fig. 3 pour l'injection latérale (injection à 90B du conduit (1))- in Fig. 3 for lateral injection (90 B injection of the duct (1))
- sur la Fig. 4 pour l'injection utilisant le dispositi selon l'invention.- in Fig. 4 for injection using the dispositi according to the invention.
On remarque une amélioration extrêmement marquée de la qualité de l'injection.There is an extremely marked improvement in the quality of the injection.
Le VIP Mixer est un mélangeur rotatif à vortex, fonctionnant en continu, décrit dans la demande de brevet européen EP a 91200440.5.The VIP Mixer is a rotating vortex mixer, continuously operating, disclosed in European Patent Application No. 91200440.5 has.
L'invention est également particulièrement utile pour l préparation de boues ou fluides de forage. Un autre aspect d'application particulièrement prometteur concerne le dosage en continu d'additifs da les fluides de séparation ou "spacers" de l'industrie pétrolière. L'invention permet pour la première fois d faire varier continûment les propriétés du "spacer", a lieu de les faire varier par paliers. Il en résulte un différence très importante en terme de qualité de l'opération. The invention is also particularly useful for the preparation of mud or drilling fluids. Another particularly promising aspect of application concerns the continuous dosing of additives in separation fluids or "spacers" in the petroleum industry. The invention allows for the first time to continuously vary the properties of the "spacer", instead of varying them in stages. This results in a very significant difference in terms of the quality of the operation.

Claims

REVENDICATIONS
1. Procédé de mélange en continu d'un ou plusieurs additifs liquides ou semi-liquides dans un courant fluide circulant dans un conduit, caractérisé en ce que chaque additif est pré-dilué, avant son injection dans ledit courant, par une fraction dérivée dudit fluide, prélevée sur ledit courant.1. A method of continuously mixing one or more liquid or semi-liquid additives in a fluid stream flowing in a conduit, characterized in that each additive is pre-diluted, before its injection into said stream, by a fraction derived from said fluid, taken from said stream.
2. Mélangeur en continu d'un ou plusieurs additifs liquides ou semi-liquides dans un courant fluide circulant dans un conduit (1) caractérisé en ce qu'il consiste en un ou plusieurs educteurs à jet (2) disposé(s) radialement autour dudit conduit de façon à ce que chaque educteur alimenté par un additif (A) prélève une fraction (f) dudit courant, mélange cette fraction (f) avec l'additif (A) et injecte le pré-mélange ainsi obtenu (f) dans ledit courant.2. Continuous mixer of one or more liquid or semi-liquid additives in a fluid current flowing in a conduit (1) characterized in that it consists of one or more jet reducers (2) arranged (s) radially around of said conduit so that each eductor supplied with an additive (A) takes a fraction (f) from said stream, mixes this fraction (f) with the additive (A) and injects the pre-mixture thus obtained (f) into said current.
3. Applications du procédé selon la revendication 1 ou du mélangeur selon la revendication 2 à 1'industrie pétrolière, parapetroliere, de nettoyage industriel et de la construction, notamment pour l'injection en continu d'additifs dans la préparation d'un laitier de ciment, ou d'une boue de forage. 3. Applications of the method according to claim 1 or of the mixer according to claim 2 to the petroleum, oil and gas, industrial cleaning and construction industry, in particular for the continuous injection of additives in the preparation of a slag of cement, or drilling mud.
4. Fluides tels que laitiers de ciment et fluides de séparation ou "spacers", et autres fluides pour l'industrie pétrolière et parapetroliere, et boues et fluides de forage, caractérisés en ce que au moins un des additifs qu'ils contiennent a été dosé par le procédé selon la revendication 1 et/ou le mélangeur selon la revendication 2.4. Fluids such as cement slag and separation fluids or "spacers", and other fluids for the oil and oil industry, and mud and drilling fluids, characterized in that at least one of the additives that they contain has been dosed by the method according to claim 1 and / or the mixer according to claim 2.
5. Procédé de traitement d'un puits de forage caractérisé en ce qu'on injecte un fluide selon la revendication 4. 5. A method of treating a wellbore characterized in that a fluid is injected according to claim 4.
EP93920572A 1992-03-23 1993-03-15 Device for continuously mixing liquid additives into a fluid Expired - Lifetime EP0652801B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR929203577A FR2688709B1 (en) 1992-03-23 1992-03-23 CONTINUOUS LIQUID ADDITIVE MIXER IN A FLUID.
FR9203577 1992-03-23
PCT/FR1993/000256 WO1993018848A1 (en) 1992-03-23 1993-03-15 Device for continuously mixing liquid additives into a fluid

Publications (2)

Publication Number Publication Date
EP0652801A1 true EP0652801A1 (en) 1995-05-17
EP0652801B1 EP0652801B1 (en) 1998-07-15

Family

ID=9428052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93920572A Expired - Lifetime EP0652801B1 (en) 1992-03-23 1993-03-15 Device for continuously mixing liquid additives into a fluid

Country Status (8)

Country Link
US (1) US5466063A (en)
EP (1) EP0652801B1 (en)
CN (1) CN1039100C (en)
DE (1) DE69319736T2 (en)
DK (1) DK0652801T3 (en)
FR (1) FR2688709B1 (en)
NO (1) NO306200B1 (en)
WO (1) WO1993018848A1 (en)

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Also Published As

Publication number Publication date
DE69319736D1 (en) 1998-08-20
EP0652801B1 (en) 1998-07-15
DK0652801T3 (en) 1999-04-19
NO943527L (en) 1994-09-22
FR2688709A1 (en) 1993-09-24
NO943527D0 (en) 1994-09-22
DE69319736T2 (en) 1998-11-12
WO1993018848A1 (en) 1993-09-30
NO306200B1 (en) 1999-10-04
US5466063A (en) 1995-11-14
FR2688709B1 (en) 1994-09-02
CN1082455A (en) 1994-02-23
CN1039100C (en) 1998-07-15

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