GB2130727A - High percentage water content monitor - Google Patents
High percentage water content monitor Download PDFInfo
- Publication number
- GB2130727A GB2130727A GB08232840A GB8232840A GB2130727A GB 2130727 A GB2130727 A GB 2130727A GB 08232840 A GB08232840 A GB 08232840A GB 8232840 A GB8232840 A GB 8232840A GB 2130727 A GB2130727 A GB 2130727A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- sensor
- water
- mixture
- brine
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 239000000203 mixture Substances 0.000 claims abstract description 43
- 239000012267 brine Substances 0.000 claims abstract description 33
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 13
- 230000005284 excitation Effects 0.000 claims abstract description 12
- 239000000523 sample Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 2
- 230000005672 electromagnetic field Effects 0.000 claims 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/023—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance where the material is placed in the field of a coil
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2823—Raw oil, drilling fluid or polyphasic mixtures
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The monitor is capable of measuring accurately the water content in percent by volume of an oil and brine mixture, where the water content is 80% or more. A housing (3) is adapted to be connected in a pipe through which the oil and brine mixture is flowing, and a sensor (50) is mounted within the housing so that the sensor is suspended in the flowing mixture. The sensor is a resistivity sensor having a transmitter coil (55) and a receiver coil (56) and provides a signal corresponding to the percent by volume of water in the mixture, even when percent by volume of water is 80% or more, in response to an excitation voltage from a source. Indicating apparatus (63) provides an indication of the percent by volume of the water in the oil and brine mixture in accordance with the signal from the sensor. <IMAGE>
Description
SPECIFICATION
High percentage water content monitor
The presentsnvention relates to monitors in general and, more particularly, to oil-in-brine and crude oil-in-brine monitors.
The present invention provides an oil-in-brine monitor which is capable of measuring percent by volume of water in an oil-in-brine mixture in which the water content is 80% or more and includes a housing which houses a sensor. The sensor receives an excitation voltage from a source and provides a signal in accordance with the water content of the oil-in-brine mixture. Apparatus provides an indication of the percent water in the mixture in accordance with the signal from the sensor.
Objects and advantages of the invention will appear more fully hereinafter, from a consideration of the detailed description which follows, taken together with the accompanying drawing wherein one embodiment is illustrated by way of example.
The single Figure of the accompanying drawing is a mechanical drawing of an oil-in-brine monitor constructed in accordance with the present invention.
The determination of water content in oil-inbrine mixtures is of utmost importance to the petroleum industry. In the conventional use of commercial capacitance type sensors, the devices are usually limited to applications where brine-inoil emulsions are monitored. This effectively limits the application to a water cut of O to 70 percent by volume of water in oil.
For oil production water flood projects, water cut values of 80% to 100% are common. In this water cut range, where free brine is present, the capacitance type probes are not applicable. The present invention utilizes a resistivity measuring technique for determining the water content in an oil-in-brine mixture where there is a water cut range of 80% to 100%.
It should be noted where the water content of the mixture is in the vicinity of 74% to 76%, the water becomes the continuous phase which contains the oil. This type of mixture is unstable and will separate into water and oil in a relatively short time period. A water-in-oil mixture, i.e.
where oil is the continuous phase, is highly stable and does not separate readily.
Referring now to the single Figure of the drawing, there is shown a monitor which for resistivity determination of water cuts in the 80% to 100% range includes a tee 3 having concentric reducers 6 welded to opposite ends. Concentric reducers 6 reduce the measuring cell size down to the pipe diameter. Victaulic-Bdaptors 10 are welded to the narrow ends of reducers 6. A flange extension 1 5 is welded to the remaining open end of tee 3.
A probe assembly includes an outlet box 21 having an internal threaded end for being connected to a sensor extension arm 24. Sensor extension arm 24 also has internal threads at the end that is connected to outlet box 21 and external threads at the opposite end. A plug 28 is threaded into sensor extension arm 24 and has a passageway for the passage of wires. A probe flange 30 is welded to sensor extension arm 24 and has holes for mounting bolts 83 which are used to affix probe flange 30 to flange extension 15. A wiper 36 of neoprene rubber is held in place by a plastic retainer 38 which is affixed to probe flange 30 by screws 44. A thermistor 54 is mounted in a connector 52 which is connected to extension arm 24.
Sensor head 50 containing two toroidal coils 55 and 56, one for transmitting (coil 55) electromagnetic energy into the flowing oil-inbrine mixture and one for receiving (coil 56) the electromagnetic energy from the mixture. Head 50 may be of the type manufactured by Great Lakes
Instruments, Inc. as their part number 32014 electrodeless sensor. The wires (not shown) for thermistor 54 and coils 55, 56 pass through extension arm 24 to outlet box 21 and are connected to analyzer means 63 by way of a cable in a conduit 60. Analyzer means 63, which may be of the type also manufactured by Great Lakes
Instruments, Inc. as their model 75 conductivity analyzer, also provides an excitation voltage to coil 55. Analyzer means 63 provides an indication of the water content of the mixture in accordance with the signals from coil 56 and from thermistor 54.
The present invention as hereinbefore described is an oil-in-brine monitor which measures the water cut of a mixture wherein the water cut lies within the range of 80 to 100 percent.
1. An oil-in-brine monitor comprising a housing adapted for connection in an oil and brine mixture flow pipe so that in use the mixture flows through the housing, sensor means mounted within said housing and exposed to said flowing mixture, for detecting the water content of oil and brine mixtures having a water content of 80% or more by volume and providing a sensed water signal representative thereof, means electrically connected to said sensor means for providing an excitation voltage to said sensor means, and means for providing an indication of the percent by volume of the water in the oil and brine mixture in accordance with the sensed water signal from the sensor means.
2. A monitor as claimed in claim 1 wherein the housing includes a pair of adaptors having approximately the same diameter as that of the pipe, a chamber affixed between the adaptors and increasing in diameter from the adaptor diameter to a large diameter of sufficient dimension to house the sensor means and having an opening with sufficient clearance of said sensor means to pass through it, and sealing means for sealing said sensor means within said housing while permitting the passage of electrical conductors from the sensor means to the excitation means and to the indicating means.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (8)
1. An oil-in-brine monitor comprising a housing adapted for connection in an oil and brine mixture flow pipe so that in use the mixture flows through the housing, sensor means mounted within said housing and exposed to said flowing mixture, for detecting the water content of oil and brine mixtures having a water content of 80% or more by volume and providing a sensed water signal representative thereof, means electrically connected to said sensor means for providing an excitation voltage to said sensor means, and means for providing an indication of the percent by volume of the water in the oil and brine mixture in accordance with the sensed water signal from the sensor means.
2. A monitor as claimed in claim 1 wherein the housing includes a pair of adaptors having approximately the same diameter as that of the pipe, a chamber affixed between the adaptors and increasing in diameter from the adaptor diameter to a large diameter of sufficient dimension to house the sensor means and having an opening with sufficient clearance of said sensor means to pass through it, and sealing means for sealing said sensor means within said housing while permitting the passage of electrical conductors from the sensor means to the excitation means and to the indicating means.
3. A monitor as claimed in claim 1 or claim 2 wherein the sensor means also includes temperature sensing means which senses the temperature of the oil and brine mixture and provides a representative temperature signal.
4. A monitor as claimed in claim 3 wherein the temperature sensing means is a thermistor.
5. A monitor as claimed in claim 3 or claim 4 wherein the indicating means provides the water content indication in accordance with the sensed water signal and the temperature signal.
6. A monitor as claimed in any one of claims 1 to 5 wherein the sensor means includes a head having a channel through which in use the mixture flows, a pair of toroidal coils mounted in the channel of the mounting head, one coil receiving the excitation voltage, the other coil providing the sensed water signal in accordance with an electromagnetic field developed in the oil and brine mixture by the one coil in response to the excitation voltage, sensor arm means which passes through sealing means of the housing and has threaded ends and a channel for the passage of electrical conductors, connector means for connecting said head means to said sensor arm means so that when said sensor head means is positioned the oil-in-brine mixture flows through the sensor head channel, and electrical conductors for connecting the one coil to the excitation means and the other coil to the indicating means.
7. A monitor as claimed in claim 6 wherein the sealing means includes flange means in which the sensor arm means is affixed and permanently sealed, O-ring sealing means arranged with said flange means so that when said flange means is mated with said chamber means, the O-ring means provides sealing, and means for fastening the flange means to said chamber means in a manner so that the head means when connected to the sensor arm by the connector passes through the opening of said chamber means and is positioned in said chamber means.
8. An oil-in-brine monitor substantially as described herein with reference to the accompanying drawing.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08232840A GB2130727B (en) | 1982-11-17 | 1982-11-17 | High percentage water content monitor |
FR8219508A FR2536538B1 (en) | 1982-11-17 | 1982-11-22 | APPARATUS FOR CONTROLLING HIGH PERCENTAGES OF WATER IN A MIXTURE OF OIL AND BRINE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08232840A GB2130727B (en) | 1982-11-17 | 1982-11-17 | High percentage water content monitor |
FR8219508A FR2536538B1 (en) | 1982-11-17 | 1982-11-22 | APPARATUS FOR CONTROLLING HIGH PERCENTAGES OF WATER IN A MIXTURE OF OIL AND BRINE |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2130727A true GB2130727A (en) | 1984-06-06 |
GB2130727B GB2130727B (en) | 1986-07-30 |
Family
ID=26223152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08232840A Expired GB2130727B (en) | 1982-11-17 | 1982-11-17 | High percentage water content monitor |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2536538B1 (en) |
GB (1) | GB2130727B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0682246A1 (en) * | 1994-05-13 | 1995-11-15 | ENDRESS + HAUSER CONDUCTA GESELLSCHAFT FÜR MESS UND REGELTECHNIK mbH & Co. | Sensor for measuring the conductivity of liquids |
GB2296774A (en) * | 1994-12-29 | 1996-07-10 | Hewlett Packard Co | Impedance measuring probe |
GB2428483A (en) * | 2005-07-19 | 2007-01-31 | Schlumberger Holdings | Apparatus and method for measuring borehole fluid resistivity |
CN117571975A (en) * | 2024-01-19 | 2024-02-20 | 锦州双星自动化技术有限公司 | Crude oil water-containing analysis calibrating device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB669836A (en) * | 1949-01-10 | 1952-04-09 | George Henry Ennis | Apparatus for measuring oil and water production of wells |
GB1085557A (en) * | 1965-09-06 | 1967-10-04 | Bissett Berman Corp | A system for measuring the electrical conductivity of liquids |
GB1426552A (en) * | 1972-03-18 | 1976-03-03 | Robertson Research Internation | Apparatus for measuring the electrical conductivity of liquids |
GB1466768A (en) * | 1974-05-13 | 1977-03-09 | Cmelik R | Apparatus for measuring the water content of oil |
GB1507515A (en) * | 1974-08-05 | 1978-04-19 | Mitsui Mining & Smelting Co | Transmitting system for use in an inductive solution analyzer for use in the electrolytic production of zinc |
GB2064127A (en) * | 1979-09-26 | 1981-06-10 | Trw Inc | Subsea hydrocarbon sensor system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488584A (en) * | 1965-05-04 | 1970-01-06 | Atomic Power Dev Ass Inc | Method and apparatus for resistivity measurement of flowing high temperature liquid metals |
DE2822943A1 (en) * | 1978-05-26 | 1979-11-29 | Tesch Gmbh & Co Kg | Probe which measures electrical conductivity of liq. - uses coils to generate and detect induced voltage in liq. |
US4220920A (en) * | 1979-03-28 | 1980-09-02 | The Foxboro Company | Electrodeless conductivity measuring system |
US4352288A (en) * | 1980-07-24 | 1982-10-05 | Texaco Inc. | Measurement of salt content in petroleum flow lines |
-
1982
- 1982-11-17 GB GB08232840A patent/GB2130727B/en not_active Expired
- 1982-11-22 FR FR8219508A patent/FR2536538B1/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB669836A (en) * | 1949-01-10 | 1952-04-09 | George Henry Ennis | Apparatus for measuring oil and water production of wells |
GB1085557A (en) * | 1965-09-06 | 1967-10-04 | Bissett Berman Corp | A system for measuring the electrical conductivity of liquids |
GB1426552A (en) * | 1972-03-18 | 1976-03-03 | Robertson Research Internation | Apparatus for measuring the electrical conductivity of liquids |
GB1466768A (en) * | 1974-05-13 | 1977-03-09 | Cmelik R | Apparatus for measuring the water content of oil |
GB1507515A (en) * | 1974-08-05 | 1978-04-19 | Mitsui Mining & Smelting Co | Transmitting system for use in an inductive solution analyzer for use in the electrolytic production of zinc |
GB2064127A (en) * | 1979-09-26 | 1981-06-10 | Trw Inc | Subsea hydrocarbon sensor system |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0682246A1 (en) * | 1994-05-13 | 1995-11-15 | ENDRESS + HAUSER CONDUCTA GESELLSCHAFT FÜR MESS UND REGELTECHNIK mbH & Co. | Sensor for measuring the conductivity of liquids |
GB2296774A (en) * | 1994-12-29 | 1996-07-10 | Hewlett Packard Co | Impedance measuring probe |
GB2296774B (en) * | 1994-12-29 | 1998-04-22 | Hewlett Packard Co | Eletromagnetic induction-type probe |
GB2428483A (en) * | 2005-07-19 | 2007-01-31 | Schlumberger Holdings | Apparatus and method for measuring borehole fluid resistivity |
US7183778B2 (en) | 2005-07-19 | 2007-02-27 | Schlumberger Technology Corporation | Apparatus and method to measure fluid resistivity |
GB2428483B (en) * | 2005-07-19 | 2010-06-16 | Schlumberger Holdings | Apparatus and method for measuring fluid resistivity |
CN117571975A (en) * | 2024-01-19 | 2024-02-20 | 锦州双星自动化技术有限公司 | Crude oil water-containing analysis calibrating device |
CN117571975B (en) * | 2024-01-19 | 2024-03-29 | 锦州双星自动化技术有限公司 | Crude oil water-containing analysis calibrating device |
Also Published As
Publication number | Publication date |
---|---|
FR2536538A1 (en) | 1984-05-25 |
FR2536538B1 (en) | 1985-06-14 |
GB2130727B (en) | 1986-07-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |