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WO2012000044A1 - Procédé et appareil de mélange - Google Patents

Procédé et appareil de mélange Download PDF

Info

Publication number
WO2012000044A1
WO2012000044A1 PCT/AU2011/000815 AU2011000815W WO2012000044A1 WO 2012000044 A1 WO2012000044 A1 WO 2012000044A1 AU 2011000815 W AU2011000815 W AU 2011000815W WO 2012000044 A1 WO2012000044 A1 WO 2012000044A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
mixing
density
levels
degree
Prior art date
Application number
PCT/AU2011/000815
Other languages
English (en)
Inventor
Christian Robert Maurice Singfield
Original Assignee
Mezurx Pty Ltd
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
Priority claimed from AU2010902910A external-priority patent/AU2010902910A0/en
Application filed by Mezurx Pty Ltd filed Critical Mezurx Pty Ltd
Publication of WO2012000044A1 publication Critical patent/WO2012000044A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/16—Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels
    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/91—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with propellers
    • 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
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
    • 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
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/2201—Control or regulation characterised by the type of control technique used
    • B01F35/2202—Controlling the mixing process by feed-back, i.e. a measured parameter of the mixture is measured, compared with the set-value and the feed values are corrected
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture

Definitions

  • the present invention relates to the field of fluids handling, and is particularly applicable to the handling of slurries such as drilling muds.
  • slurries such as drilling muds.
  • the present invention is described with reference to the use of drilling muds used in the course of drilling bore holes such as oil and gas wells, it is to be understood that the invention is not limited to the field of drilling muds.
  • Drilling muds are usually water based, but they can be based on other liquids such as synthetic oils. Additives are mixed with the liquid base. Common additives to water based drilling muds include solids such as barite, chalk (calcium carbonate) and haematite. It is required that these added solids be homogeneously mixed with the liquid base, and that the homogeneity be maintained.
  • embodiments of the present invention provide apparatus for investigating the relative degree of homogeneity of a contiguous body of liquid, the apparatus comprising means for detenriining the density of that liquid at at least two vertically-separated levels within the body of liquid.
  • the apparatus further comprises:
  • mixing means for causing mixing of the body of liquid
  • mixing control means for controlling the degree of mixing that the mixing means causes, in which the degree of mixing depends on comparison of detenninations of the density of the liquid at the at least two vertically-separated levels.
  • the mixing means comprises an impeller which is adapted for at least partial immersion in the body of liquid;
  • variable speed drive which drives the impeller. It is preferred that the mixing control means controls the speed of the variable speed drive.
  • the means for determining the density of that liquid at at least two vertically-separated levels comprises:
  • the means to selectively supply samples of the liquid comprises a manifold, the manifold comprising:
  • embodiments of the invention provide a process for investigating the relative degree of homogeneity of a contiguous body of liquid, the process comprising determining the density of that liquid at at least two vertically-separated levels within the body of liquid.
  • the process further comprises:
  • the mixing of the body of liquid is by means of an impeller which is at least partially immersed in the body of liquid;
  • the speed of the variable speed drive is varied to control the degree of mixing of the liquid.
  • the density of the fluid at each of the at least two vertically- separated levels is determined by selectively supplying samples of liquid from each of the levels to a density measuring device.
  • embodiments of the present invention provide apparatus and methods for determining whether fluids such as drilling muds are homogenous and for controlling the homogeneity of such fluids.
  • figure 1 is a drawing, partly in cross-section on a vertical plane and partly schematic, illustrating one embodiment of apparatus according to the present invention.
  • figure 2 is a schematic drawing illustrating details of a module of the embodiment of figure 1.
  • the embodiment 1 of figure 1 comprises a tank 2 and an analysis and control module 32.
  • the tank 2 is illustrated as comprising a hemispherical base and an upstanding cylindrical portion which has an open top 5.
  • a mixing impeller 3 is mounted to operate within the tank 2.
  • the impeller 3 is mounted on a shaft 4 which is in turn driven, directly or indirectly, by a variable speed motor 6.
  • the tank 2 has an outlet 7 and an inlet which is illustrated schematically by the open top 5 of the tank 2. Fluid flows from the outlet 7 of the tank 2, is utilized in a process (such as for drilling mud in an oil or gas prospecting bore) and flows back into the tank 2. Flow out from the tank 2 is indicated schematically by the arrowed line 8 and inflow to the tank is illustrated schematically by the arrowed line 9.
  • the cylindrical portion of the tank 2 has a number of tapping points 13, 14, 16, 17 and 18 which pass through the tank wall and which are adapted to allow sampling of the tank contents.
  • the tapping points 13, 14, 16, 17 and 18 are each mounted at a different height relative to the tank 2.
  • Pneumatically-controlled, normally-closed, valves 26, 27, 28, 29 and 31 are mounted to the tapping points 13, 14, 16, 17 and 18 respectively.
  • the outlets of the valves 26, 27, 28, 29 and 31 communicate with flow lines 19, 21 , 22, 23 and 24 respectively and the flow lines communicate with the analysis and control module 32.
  • the opening of a valve 26, 27, 28, 29 or 31 allows flow of fluid from the tank 2 to the analysis and control module 32 for purposes described below.
  • Signal and control lines 34, 36, 37, 38 and 39 run between the analysis and control module 32 and the valves 26, 27, 28, 29 and 31 over which those valves are controlled by the analysis and control module 32.
  • a return-flow line 41 runs from the analysis and control module 32 back to the tank 2.
  • the analysis and control module 32 comprises a manifold 51, a sampling pump 52, a measuring instrument package 53, a data-logging and display unit 56 and a processor 54.
  • the manifold 51 receives the flow lines 19, 21, 22, 23 and 24.
  • the manifold 51 is also connected to the inlet of the sampling pump 52 and the outlet of sampling pump 52 is connected to the measuring package 53.
  • the return-flow line 41 is connected to a fluid outlet of the measuring package 53.
  • Signal and control lines 61, 62 and 63 connect the processor 54 with the sampling pump 52, the measuring instrument package 53 and the data-logging and display module 56.
  • Signal and control lines 34, 36, 37, 38 and 39 connect the processor 54 with the valves 26, 27, 28, 29 and 31.
  • communications over the signal and control lines 34, 36, 37, 38, 39, 61, 62 and 63 are according to the "HART Field Communication Protocol Specifications" which are available from HART
  • apparatus In operation, apparatus according to embodiments of the present invention is placed so that the out-flow line 8 from the tank 2 supplies fluid to the environment in which it is required.
  • the tank 2 contains drilling mud.
  • Solid materials contained in suspension in drilling mud tends to settle out under the influence of gravity. This settling out tends to cause the mud that is towards the bottom of the tank to have a higher density that does the mud that is towards the top of the tank.
  • the characteristics of drilling mud also vary as material (fine solids and/or liquids such as water or petroleum products) from the bore hole becomes entrained in it
  • the mixing impeller 3 is rotated by the variable speed motor 6. This rotation of the mixing impeller 3 causes up-welling, and so mixing, of the contents of the tank 2.
  • the density of the mud is uniform through the height of the tank.
  • the processor 54 accordingly actuates valves 26, 27, 28, 29 and 31 and the sample pump 52 to draw samples of the drilling mud from different heights in the tank 2 to the measuring instrument package 53 where the density of each sample is measured.
  • the speed of rotation of the variable speed drive motor 12 is controlled by the processor 54 so that, if the mud is not homogenously mixed, then the speed of the motor is increased (and accordingly the speed of rotation of the mixing impeller 3 is increased) to achieve homogeneity.
  • the speed of the impeller 3 is subsequently similarly controlled to maintain homogeneity of the mud.
  • the speed of rotation of the variable speed drive motor 12 is controlled manually to achieve
  • the processor 54 also controls the data-logging and display unit 56 to log data relating to the operation and/or to display that data in human-readable form.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Hydrology & Water Resources (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Selon l'invention, le mélange d'un corps de liquide dans un réservoir (2) pour obtenir une homogénéité du fluide prend des échantillons du liquide à des points d'échantillonnage séparés verticalement (13, 14, 16, 17, 18). La densité des échantillons est mesurée (53) et les mesures sont comparées (54) pour indiquer le degré d'homogénéité du fluide.
PCT/AU2011/000815 2010-06-30 2011-06-30 Procédé et appareil de mélange WO2012000044A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2010902910 2010-06-30
AU2010902910A AU2010902910A0 (en) 2010-06-30 Mixing Process and Apparatus

Publications (1)

Publication Number Publication Date
WO2012000044A1 true WO2012000044A1 (fr) 2012-01-05

Family

ID=45401222

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2011/000815 WO2012000044A1 (fr) 2010-06-30 2011-06-30 Procédé et appareil de mélange

Country Status (1)

Country Link
WO (1) WO2012000044A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8794061B1 (en) 2013-10-04 2014-08-05 Ultra Analytical Group, LLC Apparatus, system and method for measuring the properties of a corrosive liquid
CN104849079A (zh) * 2015-04-29 2015-08-19 杭州电子科技大学 通过测算酒精溶液混合均匀度测混合设备混合效果的方法
CN112098598A (zh) * 2020-08-28 2020-12-18 杭州电子科技大学 一种混合器混合效果的检测方法及其检测装置
CN112362531A (zh) * 2021-01-12 2021-02-12 潍坊惠米农业科技发展有限公司 一种茶油纯度检测装置
CN117414749A (zh) * 2023-12-19 2024-01-19 深圳浩德瑞科技有限公司 金刚石研磨液的混匀检测装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6182831A (ja) * 1984-09-29 1986-04-26 Babcock Hitachi Kk スラリの貯蔵方法
JPS6365938A (ja) * 1986-09-05 1988-03-24 Toshiba Corp 攪拌制御装置
WO2001067068A2 (fr) * 2000-03-03 2001-09-13 Mud Watcher Limited Testeur
US7010087B2 (en) * 2000-05-11 2006-03-07 Johnson Matthey Plc Density measurement method and apparatus therefor
US20060248952A1 (en) * 2005-05-09 2006-11-09 Delaware Capital Formation, Inc. A method and apparatus for fluid density sensing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6182831A (ja) * 1984-09-29 1986-04-26 Babcock Hitachi Kk スラリの貯蔵方法
JPS6365938A (ja) * 1986-09-05 1988-03-24 Toshiba Corp 攪拌制御装置
WO2001067068A2 (fr) * 2000-03-03 2001-09-13 Mud Watcher Limited Testeur
US7010087B2 (en) * 2000-05-11 2006-03-07 Johnson Matthey Plc Density measurement method and apparatus therefor
US20060248952A1 (en) * 2005-05-09 2006-11-09 Delaware Capital Formation, Inc. A method and apparatus for fluid density sensing

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8794061B1 (en) 2013-10-04 2014-08-05 Ultra Analytical Group, LLC Apparatus, system and method for measuring the properties of a corrosive liquid
CN104849079A (zh) * 2015-04-29 2015-08-19 杭州电子科技大学 通过测算酒精溶液混合均匀度测混合设备混合效果的方法
CN112098598A (zh) * 2020-08-28 2020-12-18 杭州电子科技大学 一种混合器混合效果的检测方法及其检测装置
CN112098598B (zh) * 2020-08-28 2022-08-23 杭州电子科技大学 一种混合器混合效果的检测方法及其检测装置
CN112362531A (zh) * 2021-01-12 2021-02-12 潍坊惠米农业科技发展有限公司 一种茶油纯度检测装置
CN117414749A (zh) * 2023-12-19 2024-01-19 深圳浩德瑞科技有限公司 金刚石研磨液的混匀检测装置
CN117414749B (zh) * 2023-12-19 2024-03-12 深圳浩德瑞科技有限公司 金刚石研磨液的混匀检测装置

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