CN111208039A - System for measuring viscosity of water-containing crude oil at high temperature and high pressure - Google Patents
System for measuring viscosity of water-containing crude oil at high temperature and high pressure Download PDFInfo
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- CN111208039A CN111208039A CN202010028773.6A CN202010028773A CN111208039A CN 111208039 A CN111208039 A CN 111208039A CN 202010028773 A CN202010028773 A CN 202010028773A CN 111208039 A CN111208039 A CN 111208039A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000010779 crude oil Substances 0.000 title claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 5
- 239000001569 carbon dioxide Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Abstract
The invention provides a system for measuring the viscosity of water-containing crude oil at high temperature and high pressure, which comprises: the device comprises a water bath kettle, an intermediate container, a capillary tube, a heating device, a pressure device, a sample injection valve and a water inlet valve; a sample transmission capillary is connected between the capillary and the intermediate container; the pressure device comprises a first pressure unit and a second pressure unit, the first pressure unit comprises a pressure control device, a first switch valve and a pressure sensor, the second pressure unit comprises a second switch valve and a pressure sensor, and the pressure sensor is connected with the computer; the inside piston that is equipped with of intermediate container, sample portion and pass the pressure medium and hold the chamber, pass and press the medium to hold the intercommunication in the chamber and have the manometer pipe, install high pressure constant speed water pump on the manometer pipe. The invention has the beneficial effects that: the application range is wide; the measuring device material is resistant to carbon dioxide corrosion and can directly measure the viscosity of the crude oil containing carbon dioxide; the operation is simple, and the automatic test and calculation are realized in the measuring process.
Description
Technical Field
The invention relates to the field of crude oil testing instruments, in particular to a system for measuring the viscosity of water-containing crude oil at high temperature and high pressure.
Background
Crude oil viscosity is an important physical parameter for oil and gas field development and oil and gas gathering and transportation design. The viscosity of crude oil is the internal friction resistance of the crude oil in the flowing process, and the water content affects the viscosity of the crude oil, so that the flowing capacities of the crude oils with different water contents in pipelines are different in the oil and gas exploitation and gathering processes. The design of a crude oil gathering and transportation pipe network, the design of an oil production process and the calculation of pipe transportation pressure drop are closely related to the viscosity of crude oil, and the testing of the viscosity of the crude oil with different water contents has important significance for optimizing the process design, saving energy and reducing cost.
Currently, common instruments for measuring the viscosity of crude oil include digital display rotational viscometers, high temperature and high pressure rheometers, and falling ball viscometers. Falling ball viscometers can measure the viscosity of crude oil under high temperature and high pressure conditions, but are not suitable when the crude oil contains water. The rotational viscometer has the advantages of high sensitivity, accurate result, convenience in testing and the like, but the rotational viscometer cannot test the viscosity of crude oil under a high-pressure condition, and the viscosity of the crude oil is tested under a high-temperature condition by an additional heating tank, so that the rotational viscometer cannot be used for testing the viscosity of the water-containing crude oil. The high-temperature high-pressure rheometer can measure the viscosity of crude oil under the conditions of high temperature and high pressure, but has the disadvantages of complex operation, high price, difficult bearing of common enterprise units and unsuitability for popularization and application.
The conventional viscosity testing instrument has certain limitation on the measurement of the viscosity of the water-containing crude oil, and as a large amount of water is contained in the produced crude oil due to the fact that a large amount of water is injected in the later stage of oil field development, how to accurately test the viscosity of the water-containing crude oil is one of the key problems in the efficient development of the oil field, therefore, the instrument for conveniently and practically measuring the viscosity of the water-containing crude oil is very necessary.
Disclosure of Invention
In order to solve the technical problem that an instrument for measuring the viscosity of crude oil in the prior art is inconvenient to operate, the invention provides a system for measuring the viscosity of water-containing crude oil at high temperature and high pressure.
The specific technical scheme is as follows:
a system for measuring the viscosity of an aqueous crude oil at an elevated temperature and pressure, except that the system for measuring the viscosity of an aqueous crude oil at an elevated temperature and pressure comprises: the device comprises a water bath kettle, an intermediate container arranged in the water bath kettle, capillaries uniformly distributed in the water bath kettle, a heating device for heating the water bath kettle, a pressure device connected with the capillaries, a sample injection valve connected with the intermediate container and a water inlet valve connected with the water bath kettle;
a sample transfer capillary is connected between the capillary and the intermediate container;
the pressure device comprises a first pressure unit connected to one end of the capillary tube and a second pressure unit connected to the conveying capillary tube, the first pressure unit comprises a pressure control device, a first switch valve and a pressure sensor, and the second pressure unit comprises a second switch valve and a pressure sensor;
the heating device comprises a heater and a temperature sensor;
the piston is arranged in the middle container, the piston separates the middle container into a sample part and a pressure transmission medium containing cavity, the pressure transmission medium containing cavity is communicated with a pressure pipe, the pressure pipe is provided with a three-way valve and a third switch valve, and the third switch valve is connected with a high-pressure constant-speed water pump.
Further, the middle container and the water bath are both provided with stirring devices.
Further, the heater is one or more heating rods.
Further, a heat insulation layer is arranged outside the water bath kettle.
Furthermore, the first pressure unit also comprises three-way valves connected with the first switch valve, the number of the pressure sensors is three, the measuring ranges of the pressure sensors are different, and the pressure sensors are connected with the three-way valves; the second pressure unit further comprises a three-way valve connected with the second switch valve, the number of the pressure sensors is three, the measuring ranges of the pressure sensors are different, and the pressure sensors are connected with the three-way valve.
Further, the pressure control device comprises a back pressure valve and a gas cylinder connected with the back pressure valve.
Further, the output end of the pressure sensor is connected with a computer.
Further, the material of the intermediate container and the capillary is 316L steel.
Furthermore, the measuring ranges of the pressure sensors are respectively 0.001MPa to 6MPa, 0.01MPa to 16MPa and 0.1MPa to 60 MPa.
Compared with the prior art, the invention has the beneficial effects that: (1) the application range is wide, and the viscosity of the water-containing crude oil at the temperature of 20-100 ℃ and the pressure of 0.001-60 MPa can be accurately measured; (2) the measuring device is made of 316L steel, is resistant to carbon dioxide corrosion and can directly measure the viscosity of the crude oil containing carbon dioxide; (3) the operation is simple, and the automatic test and calculation are realized in the measuring process; (4) the design structure is reasonable, and the capillary tube can be conveniently and directly transferred into the intermediate container; (5) environmental factors influencing the viscosity test result of the water-containing crude oil are minimized in the test process; (6) the pressure sensors with different measuring ranges can meet the measurement of various accuracies.
Drawings
FIG. 1 is a diagram of a system for measuring the viscosity of an aqueous crude oil at elevated temperature and pressure;
wherein, a water bath pot-1, an intermediate container-2, a capillary tube-3, a heating device-4, a pressure device-5, a transmission capillary tube-6, a pressure sensor-7, a stirring device-8, a three-way valve-9, a computer-10, a high-pressure constant-speed water pump-11, a water inlet valve-101, a heat preservation layer-102, a sample inlet valve-201, a piston-202, a sample part-203, a third switch valve-2031, a pressure transmission medium accommodating cavity-204, a pressure tube-205, a first pressure unit-501, a second pressure unit-502, a pressure control device-5011, a back pressure valve-5011 a, a gas cylinder-5011 b, a first switch valve-5012, a second switch valve-5021, a driving motor-801 and a stirring piece-802, a heater-401 and a temperature sensor-402.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Examples
A system for measuring the viscosity of an aqueous crude oil at elevated temperature and pressure comprising: the device comprises a water bath kettle 1, an intermediate container 2 arranged in the water bath kettle, capillaries 3 uniformly distributed in the water bath kettle 1, a heating device 4 for heating the water bath kettle 1, a pressure device 5 connected with the capillaries 3, a sample injection valve 201 connected with the intermediate container 2 and a water inlet valve 101 connected with the water bath kettle 1, wherein a heat insulation layer 102 is arranged outside the water bath kettle 1, and a sample conveying capillary 6 is connected between the capillaries 3 and the intermediate container 2;
the piston 202 is arranged in the intermediate container 2, the piston 202 separates the intermediate container 2 into a sample part 203 and a pressure transmission medium accommodating cavity 204, the pressure transmission medium accommodating cavity 204 is filled with a pressure transmission medium, water is selected as the pressure transmission medium, the pressure transmission medium accommodating cavity 204 is communicated with a pressure pipe 205, the pressure pipe 205 is provided with a three-way valve 9 and a third switch valve 2031, the third switch valve 2031 is connected with a high-pressure constant-speed water pump 11, the heating device 4 comprises a heater 401 and a temperature sensor 402, and the heater 401 is one or more heating rods.
During the test, water with a constant flow rate is introduced into the pressure medium accommodating cavity 204, the piston is pushed to press the sample into the transmission capillary 6, and the sample flows through the pressure device 5 and fills the capillary 3.
The pressure device 5 comprises a first pressure unit 501 connected to one end of the capillary tube 3 and a second pressure unit 502 connected to the transmission capillary tube 6, wherein the first pressure unit 501 comprises an extraction device 5011, a first switch valve 5012 and a pressure sensor 7, and the second pressure unit 502 comprises a second switch valve 5021 and a pressure sensor 7; middle container 2 with agitating unit 8 is all installed to water-bath 1, and agitating unit 8 includes driving motor 801 and stirring piece 802, accuse pressure device 5011 include back pressure valve 5011a and with gas cylinder 5011b that the back pressure valve is connected, pressure sensor 7 output is connected with computer 10, middle container 2 with capillary 3 adopts 316L steel, can carbon dioxide resistance corrodes.
The first pressure unit 501 further comprises three-way valves 9 connected with the first switch valve 5012, the number of the pressure sensors 7 is three, the measuring ranges of the pressure sensors are different, and the pressure sensors 7 are connected with the three-way valves 9; the second pressure unit 502 further comprises three-way valves 9 connected with the second switch valve 5021, the number of the pressure sensors 7 is three, the measuring ranges of the pressure sensors 7 are different, the pressure sensors 7 are connected with the three-way valves 9, the measuring ranges of the pressure sensors 7 are respectively 0.001-6 MPa, 0.01-16 MPa and 0.1-60 MPa, the measurement can be expanded to 0.001-60 MPa by selecting the pressure sensors 7 with the three measuring ranges, and different pressure sensors 7 can be selected according to different test requirements.
The working process of the invention is as follows:
1. a vacuum pump is connected to the sample injection valve 201 of the intermediate container 2, the vacuum pump is connected to the first switching valve 5012 or the second switching valve 5021, the intermediate container 2 and the capillary 3 are evacuated, and then the aqueous crude oil is added to the intermediate container 2 through the sample injection valve 201.
2. And (3) opening the heating device 4, heating the distilled water in the water bath to a specified temperature, simultaneously opening the stirring devices 8 in the water bath 1 and the intermediate container 2, uniformly mixing the sample oil and water in the intermediate container 2, and uniformly heating the sample oil and water.
3. The back pressure valve 5011a is connected to a gas cylinder 5011b, and the back pressure is added to a prescribed pressure to control the sample in the inner capillary to maintain a stable pressure.
4. When the sample in the intermediate container 2 is heated to a designated temperature, and at the same time, the three-way valve 9 on the pressure pipe 205, the third on/off valve 2031 communicating with the intermediate container 2, and the high-pressure constant-speed water pump 11 are opened, the sample is slowly made to flow through the pressure sensor 7 of the second pressure unit 502 and the pressure sensor 7 of the first pressure unit 501 in this order via the transfer capillary 6 by the piston 202 compressing and extracting device 5011 to fill the whole capillary 3.
5. The pressure difference across the inlet and outlet sections of the capillary 3 was monitored on a computer 10 and the sample viscosity was calculated using software, as shown in equation 1(Poiseuille equation):
wherein Q represents the flow rate of the high-pressure constant-speed water pump 11 into the intermediate container 2 delta p, the pressure difference of the inlet and outlet sections measured at the two ends of the capillary tube is disclosed in the invention, L is the length of the capillary tube, r is the radius of the capillary tube, and mu is the viscosity of the sample to be measured.
The invention directly mixes the sample in the middle container and then flows through the capillary tube through temperature control and pressure control, and has simple and convenient operation and convenient control.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A system for measuring the viscosity of an aqueous crude oil at an elevated temperature and pressure, the system comprising: the device comprises a water bath kettle (1), an intermediate container (2) arranged in the water bath kettle (1), capillary tubes (3) uniformly distributed in the water bath kettle (1), a heating device (4) used for heating the water bath kettle (1), a pressure device (5) connected with the capillary tubes (3), a sample injection valve (201) connected with the intermediate container (2) and a water inlet valve (101) connected with the water bath kettle (1);
a sample transmission capillary (6) is connected between the capillary (3) and the intermediate container (2);
the pressure device (5) comprises a first pressure unit (501) connected to one end of the capillary tube (3) and a second pressure unit (502) connected to the transmission capillary tube (6), the first pressure unit (501) comprises a pressure control device (5011), a first switch valve (5012) and a pressure sensor (7), and the second pressure unit (502) comprises a second switch valve (5021) and a pressure sensor (7);
the heating device (4) comprises a heater (401) and a temperature sensor (402);
middle container (2) inside is equipped with piston (202), piston (202) will middle container (2) separation is sample portion (203) and pressure transmission medium holds chamber (204), the intercommunication has manometer pipe (205) on pressure transmission medium holds chamber (204), install three-way valve (9) and third on-off valve (2031) on manometer pipe (205), third on-off valve (2031) is connected with high-pressure constant speed water pump (11).
2. A system for measuring the viscosity of crude oil containing water at high temperature and high pressure according to claim 1, characterized in that the stirring device (8) is installed on both the intermediate container (2) and the water bath (1).
3. The system for measuring the viscosity of crude oil containing water at high temperature and high pressure as claimed in claim 1, wherein the heater (401) is one or more heating rods.
4. The system for measuring the viscosity of the crude oil containing water under high temperature and high pressure as claimed in claim 1, wherein the water bath (1) is externally provided with an insulating layer (102).
5. The system for measuring the viscosity of crude oil containing water at high temperature and high pressure according to claim 1, wherein the first pressure unit (501) further comprises a three-way valve (9) connected with the first on-off valve (5012), the number of the pressure sensors (7) is three and the ranges are different, and the pressure sensors (7) are connected with the three-way valve (9); the second pressure unit (502) further comprises a three-way valve (9) connected with the second switch valve (5021), the number of the pressure sensors (7) is three, the measuring ranges of the pressure sensors are different, and the pressure sensors (7) are connected with the three-way valve (9).
6. The system for measuring the viscosity of crude oil containing water at high temperature and high pressure as claimed in claim 5, wherein the pressure control device (5011) comprises a back pressure valve (5011a) and a gas cylinder (5011b) connected with the back pressure valve (5011 a).
7. The system for measuring the viscosity of crude oil containing water at high temperature and high pressure as claimed in claim 1, wherein the output end of the pressure sensor (7) is connected with a computer (10).
8. A system for measuring the viscosity of crude oil containing water at high temperature and high pressure according to claim 1, characterized in that the material of the intermediate container (2) and the capillary (3) is 316L steel.
9. The system for measuring the viscosity of crude oil containing water under high temperature and high pressure as claimed in claim 5, wherein the pressure sensor (7) has a measuring range of 0.001MPa to 6MPa, 0.01MPa to 16MPa and 0.1MPa to 60MPa, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010028773.6A CN111208039A (en) | 2020-01-11 | 2020-01-11 | System for measuring viscosity of water-containing crude oil at high temperature and high pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010028773.6A CN111208039A (en) | 2020-01-11 | 2020-01-11 | System for measuring viscosity of water-containing crude oil at high temperature and high pressure |
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| Publication Number | Publication Date |
|---|---|
| CN111208039A true CN111208039A (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010028773.6A Pending CN111208039A (en) | 2020-01-11 | 2020-01-11 | System for measuring viscosity of water-containing crude oil at high temperature and high pressure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362563A (en) * | 2020-10-29 | 2021-02-12 | 中国石油天然气集团有限公司 | Device for evaluating corrosion resistance of petroleum pipe in oil-water coupling medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10142139A (en) * | 1996-11-08 | 1998-05-29 | Idemitsu Kosan Co Ltd | Instrument and method for measurement of viscosity of liquid |
| JP2007108045A (en) * | 2005-10-14 | 2007-04-26 | Idemitsu Kosan Co Ltd | Device and method for measuring viscosity of liquid |
| CN105675445A (en) * | 2016-03-25 | 2016-06-15 | 中国石油大学(华东) | High-temperature high-pressure supercritical carbon dioxide capillary viscometer and utilization method thereof |
| CN105928832A (en) * | 2016-04-14 | 2016-09-07 | 北京瑞莱博石油技术有限公司 | Capillary viscosity measuring instrument and fluid viscosity measuring method |
| CN207730608U (en) * | 2017-12-28 | 2018-08-14 | 中国华能集团公司 | A kind of thin-tube type rheometer experimental system |
-
2020
- 2020-01-11 CN CN202010028773.6A patent/CN111208039A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10142139A (en) * | 1996-11-08 | 1998-05-29 | Idemitsu Kosan Co Ltd | Instrument and method for measurement of viscosity of liquid |
| JP2007108045A (en) * | 2005-10-14 | 2007-04-26 | Idemitsu Kosan Co Ltd | Device and method for measuring viscosity of liquid |
| CN105675445A (en) * | 2016-03-25 | 2016-06-15 | 中国石油大学(华东) | High-temperature high-pressure supercritical carbon dioxide capillary viscometer and utilization method thereof |
| CN105928832A (en) * | 2016-04-14 | 2016-09-07 | 北京瑞莱博石油技术有限公司 | Capillary viscosity measuring instrument and fluid viscosity measuring method |
| CN207730608U (en) * | 2017-12-28 | 2018-08-14 | 中国华能集团公司 | A kind of thin-tube type rheometer experimental system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362563A (en) * | 2020-10-29 | 2021-02-12 | 中国石油天然气集团有限公司 | Device for evaluating corrosion resistance of petroleum pipe in oil-water coupling medium |
| CN112362563B (en) * | 2020-10-29 | 2023-11-28 | 中国石油天然气集团有限公司 | Device for evaluating corrosion resistance of petroleum pipe in oil-water coupling medium |
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Application publication date: 20200529 |