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WO1999047895A1 - Debitmetre - Google Patents

Debitmetre Download PDF

Info

Publication number
WO1999047895A1
WO1999047895A1 PCT/GB1999/000798 GB9900798W WO9947895A1 WO 1999047895 A1 WO1999047895 A1 WO 1999047895A1 GB 9900798 W GB9900798 W GB 9900798W WO 9947895 A1 WO9947895 A1 WO 9947895A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
flow
region
duct
flow meter
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.)
Ceased
Application number
PCT/GB1999/000798
Other languages
English (en)
Inventor
Neil Irwin Douglas
Lloyd Stan Bailey
James Brian Wilson
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.)
Baker Hughes International Treasury Services Ltd
Original Assignee
ABB Offshore Systems 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
Application filed by ABB Offshore Systems Ltd filed Critical ABB Offshore Systems Ltd
Priority to AU28476/99A priority Critical patent/AU2847699A/en
Publication of WO1999047895A1 publication Critical patent/WO1999047895A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G01F1/05—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 mechanical effects
    • G01F1/34—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 mechanical effects by measuring pressure or differential pressure
    • G01F1/36—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 mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/40—Details of construction of the flow constriction devices
    • G01F1/44—Venturi tubes

Definitions

  • the present invention relates to a flow meter which can be applied to any environment
  • tubing including such a flow meter.
  • the invention arose, however, in the design of a flow meter for measuring the flow of oil and water mixtures in the production tubing of a well.
  • the invention can thus be viewed as being an inverse Venturi flow meter.
  • Nenturi flow meters are known, in which by narrowing the cross-sectional area of the flow path and measuring the pressure differential between a position within the reduced cross-
  • the second position may be a position at which, under usual flow
  • These channels are preferably drilled in the body of the insert.
  • the second channel is arranged so as to extend longitudinally through a wall of the duct.
  • the flow meter may allow the flow meter to occupy minimal space radially from the axis of the duct. This is of particular significance where the flow meter is to be used within an oil producing borehole, or other narrow bore applications.
  • a borehole for producing oil or gas comprises an outer casing surrounding an oil or gas production tubing comprising
  • a flow meter in accordance with the first aspect of the invention installed in the tubing. At least a portion of the outer diameter of the region of increased cross-sectional area is
  • the invention is particularly applicable to use in oil wells because the area of increased
  • diameter can be dimensioned so as to fit as a sliding fit into the outer casing and thus
  • the flow meter electronics can be fitted into the production
  • These service lines may include hydraulic
  • increased cross-sectional area preferably has at least one recess on its outer surface to
  • the internal cross-section of the insert may, for
  • the preferred form of pressure sensor is a high accuracy quartz sensor, or could be a strain gauge, a displacement gauge or any other type.
  • flow in a duct having a region of increased cross-sectional area comprises: detecting a
  • the second position being such as to experience fully developed flow
  • Figure 2 is a longitudinal cross-sectional view of the flow meter of Figure 1 installed in
  • Figure 3 shows a side view of the Figure 1 flow meter and a cross-section of the flow
  • Figure 4 is a perspective view of the flow meter of Figure 1.
  • the flow meter is shown in the form of an insert, which is insertable in a region of production tubing.
  • the insert comprises generally an inlet section 1, a divergent cone 2, a mixer section 3, a convergent cone 4 and an outlet section 5.
  • the insert is formed by the welding together of separately machined stainless steel sections.
  • the inlet section 1 includes a threaded portion 6 which, in use, is threaded into the
  • the outlet section 5 similarly includes a threaded portion 7 for threading into an
  • production tubing is preferably such as to provide a duct having substantially no resistance
  • the inner bore of the inlet section 1 has a circular cross-section of constant diameter, as
  • a channel 8 is formed by drilling to extend radially from the inner surface of the insert at an apex of the elliptical cross-section of the mixer section 3 to the outer surface of the
  • This channel is intercepted by a second channel 9 which extends longitudinally through the wall of the insert to a pressure measurement transducer 10.
  • a bung 11 is
  • a second pressure transducer located in the first channel 8 such as to cause the pressure sensor 10 to be in fluid contact only with the inner bore of the mixer section 3 of the insert.
  • a similar flow arrangement 18 is located on the opposite side of the insert to the 7 arrangement 8-17. This arrangement 18 will be used in the event of failure of the first
  • the channel 8 is located at a second position a distance from the divergent cone 2
  • the second position must also be at sufficient distance from the intersection of the mixer
  • the radial channel 13 is located in the outlet section 5 at a sufficient distance from the
  • measurement transducers 10 and 12 may each be a high accuracy quartz sensor, a strain
  • gauge measurement transducer or any other type.
  • the electronic flow measurement means 14 comprises means to detect the pressure differential between the first position and the second position and means to derive from
  • diameter of a portion 21, however, is greater than the diameter of the portion 20 to
  • the portion 21 of the insert will fit closely within the casing C, as illustrated in Figure 2, and will prevent movement of the insert within the casing C, other than movement 9 longitudinally along the casing C. Such longitudinal movement may also be reduced by
  • diameter of a portion 22 of the insert is larger than the outer diameter of the portion 20
  • recesses 23 and 24 extend longitudinally from the section 20 to
  • These service lines may include hydraulic power tubes H, electrical power cables E and/or electrical communications conductors CC.
  • the orientation of the elliptical cross-section of the inner bore of the mixer section 3 dictates the location of the recesses 23 and 24 in the portion 21.
  • pressure transducers could be used which, instead of detecting pressure at
  • each of the first and second positions detect pressure differentials.
  • Such transducers may be any transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

L'invention porte sur un débitmètre Venturi qui comprend généralement une section d'admission (1), un cône divergent (2) une section (3) de mélange, un cône (4) convergent et une section (5) d'évacuation. Ce cône divergent (2) progresse de la section transversale circulaire de la section (1) d'admission à une section transversale elliptique d'une surface à section transversale plus importante que la section (1) d'admission. La section (3) de mélange conserve cette section transversale elliptique sur toute sa longueur. Le cône (4) convergent progresse faiblement de la section transversale elliptique de la section (3) de mélange à la section transversale circulaire de la section (5) d'évacuation. Cette caractéristique fait que le débitmètre est notamment approprié pour être utilisé dans une colonne de production où l'espace est réduit, tel qu'un trou de forage. En plaçant un canal (8) et un canal (13) à des endroits où serait constaté un écoulement totalement formé dans des conditions habituelles d'écoulement, des transducteurs de mesure (10 et 12) enregistreront des pressions statiques constantes. Un dispositif (14) électronique de mesure d'écoulement comprend un organe permettant de détecter la pression différentielle entre la première et la seconde position, et un organe permettant de déduire de cette pression différentielle le débit d'un fluide par l'élément d'insertion. Pour cela, on applique l'équation de Bernoulli à la pression différentielle détectée de la densité du fluide et des dimension internes connues de l'élément d'insertion.
PCT/GB1999/000798 1998-03-16 1999-03-16 Debitmetre Ceased WO1999047895A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU28476/99A AU2847699A (en) 1998-03-16 1999-03-16 A flow meter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9805626A GB2335494A (en) 1998-03-16 1998-03-16 Venturi Flow Meter
GB9805626.0 1998-03-16

Publications (1)

Publication Number Publication Date
WO1999047895A1 true WO1999047895A1 (fr) 1999-09-23

Family

ID=10828681

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/000798 Ceased WO1999047895A1 (fr) 1998-03-16 1999-03-16 Debitmetre

Country Status (3)

Country Link
AU (1) AU2847699A (fr)
GB (1) GB2335494A (fr)
WO (1) WO1999047895A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6629564B1 (en) 2000-04-11 2003-10-07 Schlumberger Technology Corporation Downhole flow meter
WO2006023607A1 (fr) * 2004-08-18 2006-03-02 Baker Hughes Incorporated Debitmetre utilisant des jauges de contrainte pour mesurer une pression differentielle
JP2017049125A (ja) * 2015-09-02 2017-03-09 国立研究開発法人産業技術総合研究所 流量計

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100387938C (zh) * 2005-08-02 2008-05-14 中国人民解放军总后勤部油料研究所 一种用于输油管线流量测量的承插式涡轮流量计
DE102006060440A1 (de) * 2006-12-19 2008-06-26 Endress + Hauser Flowtec Ag Vorrichtung zum Messen des Volumen- oder Massestroms eines Mediums in einer Rohrleitung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1498421A1 (de) * 1965-12-22 1969-10-02 Bandjuk Vasily V Durchflussmesser variablen Druckgefaelles fuer Fluessigkeiten und Gase
GB2296096A (en) * 1994-12-16 1996-06-19 Wood Group Production Technolo Flowmeter
EP0749004A1 (fr) * 1995-06-15 1996-12-18 Schlumberger Limited (a Netherland Antilles corp.) Débimètre à venturi utilisé dans une veine d'écoulement d'un fluide
WO1997021077A1 (fr) * 1995-12-07 1997-06-12 Panex Corporation Systemes de mesure de pression differentielle pour ecoulements de liquide
DE19648573C1 (de) * 1996-11-23 1998-02-19 Tavira Holdings Ltd Wirkdruckgeber eines Durchflußmessers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403514A (en) * 1980-05-20 1983-09-13 Critikon, Inc. Pneumotachograph with pitot-like tubes
GB2186981B (en) * 1986-02-21 1990-04-11 Prad Res & Dev Nv Measuring flow in a pipe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1498421A1 (de) * 1965-12-22 1969-10-02 Bandjuk Vasily V Durchflussmesser variablen Druckgefaelles fuer Fluessigkeiten und Gase
GB2296096A (en) * 1994-12-16 1996-06-19 Wood Group Production Technolo Flowmeter
EP0749004A1 (fr) * 1995-06-15 1996-12-18 Schlumberger Limited (a Netherland Antilles corp.) Débimètre à venturi utilisé dans une veine d'écoulement d'un fluide
WO1997021077A1 (fr) * 1995-12-07 1997-06-12 Panex Corporation Systemes de mesure de pression differentielle pour ecoulements de liquide
DE19648573C1 (de) * 1996-11-23 1998-02-19 Tavira Holdings Ltd Wirkdruckgeber eines Durchflußmessers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6629564B1 (en) 2000-04-11 2003-10-07 Schlumberger Technology Corporation Downhole flow meter
WO2006023607A1 (fr) * 2004-08-18 2006-03-02 Baker Hughes Incorporated Debitmetre utilisant des jauges de contrainte pour mesurer une pression differentielle
GB2432221A (en) * 2004-08-18 2007-05-16 Baker Hughes Inc Flow meter using strain guages to measure a pressure differential
GB2432221B (en) * 2004-08-18 2009-03-18 Baker Hughes Inc Flow meter using strain guages to measure a pressure differential
JP2017049125A (ja) * 2015-09-02 2017-03-09 国立研究開発法人産業技術総合研究所 流量計

Also Published As

Publication number Publication date
GB9805626D0 (en) 1998-05-13
GB2335494A (en) 1999-09-22
AU2847699A (en) 1999-10-11

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