CA2445296A1 - Apparatus and method for controlling the speed of a pump in a well - Google Patents

Apparatus and method for controlling the speed of a pump in a well Download PDF

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Publication number
CA2445296A1
CA2445296A1 CA002445296A CA2445296A CA2445296A1 CA 2445296 A1 CA2445296 A1 CA 2445296A1 CA 002445296 A CA002445296 A CA 002445296A CA 2445296 A CA2445296 A CA 2445296A CA 2445296 A1 CA2445296 A1 CA 2445296A1
Authority
CA
Canada
Prior art keywords
controlling
flow rate
probes
pump
rtd
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
CA002445296A
Other languages
French (fr)
Other versions
CA2445296C (en
Inventor
Stuart F. Bevan
Timothy Lownie
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.)
1273941 Ontario Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2445296A1 publication Critical patent/CA2445296A1/en
Application granted granted Critical
Publication of CA2445296C publication Critical patent/CA2445296C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/008—Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Automation & Control Theory (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)

Abstract

A controller for controlling the pump unit of an oil well includes a sensor having a first and second probe for placement in the flow of oil from the well bore. Each of the probes contains a heater. A constant power source is selectively connected to one of the heaters. Each of the probes also includes a linear RTD at each of their tips respectively for generating a signal indicative of the temperature measured at each of the first and second probes. A control unit receives signals from the RTD's and determines a flow rate therefrom. A pump control signal is generated in response to the flow rate, wherein the pump control signal continuously varies a predetermined parameter for controlling the flow rate of a pumping unit during operation of the pumping unit.
CA002445296A 1998-06-12 1998-06-12 Apparatus and method for controlling the speed of a pump in a well Expired - Lifetime CA2445296C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002240606A CA2240606C (en) 1998-06-12 1998-06-12 Controller for oil wells using a heated probe sensor

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002240606A Division CA2240606C (en) 1998-06-12 1998-06-12 Controller for oil wells using a heated probe sensor

Publications (2)

Publication Number Publication Date
CA2445296A1 true CA2445296A1 (en) 1999-12-12
CA2445296C CA2445296C (en) 2008-02-19

Family

ID=29275890

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002240606A Expired - Lifetime CA2240606C (en) 1998-06-12 1998-06-12 Controller for oil wells using a heated probe sensor
CA002445296A Expired - Lifetime CA2445296C (en) 1998-06-12 1998-06-12 Apparatus and method for controlling the speed of a pump in a well

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002240606A Expired - Lifetime CA2240606C (en) 1998-06-12 1998-06-12 Controller for oil wells using a heated probe sensor

Country Status (1)

Country Link
CA (2) CA2240606C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2510101C (en) 2005-06-08 2006-05-16 Noralta Controls Ltd. Method and apparatus for controlling the speed of a pump in a well
US11953458B2 (en) * 2019-03-14 2024-04-09 Ecolab Usa Inc. Systems and methods utilizing sensor surface functionalization

Also Published As

Publication number Publication date
CA2240606A1 (en) 1999-12-12
CA2445296C (en) 2008-02-19
CA2240606C (en) 2003-11-04

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20180612

MKEX Expiry

Effective date: 20180612