CN106323814B - A method of measurement viscosity of thickened oil - Google Patents
A method of measurement viscosity of thickened oil Download PDFInfo
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- CN106323814B CN106323814B CN201510345842.5A CN201510345842A CN106323814B CN 106323814 B CN106323814 B CN 106323814B CN 201510345842 A CN201510345842 A CN 201510345842A CN 106323814 B CN106323814 B CN 106323814B
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Abstract
The invention discloses a kind of methods for measuring viscosity of thickened oil：High pressure falling ball viscometer is heated up and constant more than formation temperature 4h, is evacuated；Saturation solution of zinc sulfate is full of pressurization pipeline, high pressure falling ball viscometer, sample transfer pipeline；The pressure of high pressure falling ball viscometer is promoted to value formation pressure；Sample storage device is connected to sample transfer pipeline；Maintain strata pressure, the volume for constantly reducing high-pressure metering pump A, crude oil sample displacement is entered in high pressure falling ball viscometer, so that the saturation solution of zinc sulfate in high pressure falling ball viscometer replaces discharge, after solution of zinc sulfate all discharge, continue row for 20ml crude oil sample；The falling sphere time is measured by Dosimetry.Method of the invention realizes stratum viscous crude fluid balance sample transfer by the way of different attribute fluid substitution, ensure in viscous crude sample transmittance process, the change that fluid state and property will not occur ensures that unicity, the stability of test fluid, and the real reliability of analysis result.
Description
Technical field
The present invention relates to it is a kind of measure viscosity of thickened oil method, in particular for using falling ball viscometer measurement viscous crude,
The method of the viscosity of super-viscous oil.
Background technique
Viscous crude, is asphalitine and gum level is higher, the biggish crude oil of viscosity, ground surface density is usually greater than 0.943,
Lower viscosity is greater than the crude oil of 50 centipoises viscous crude.Measurement viscosity of crude is measured frequently with falling ball viscometer in the prior art, method
It is：Viscosimeter is evacuated first, and sing-phase crude oil is transferred in viscosimeter to and is kept pressure punching row's 2 times or more viscosimeter volume, is made new
Fresh sing-phase crude oil sample is full of viscosimeter.Common falling ball viscometer, sample transfer pipeline and viscosimeter volume add up to 20~35ml,
For viscous crude fluid, since viscosity of thickened oil is big, flowing velocity is slow, by the way of punching row, it is difficult to guarantee to enter viscosimeter
Oil sample is in single phase always, and test fluid state and property is caused to change, and analyzes unstable result, and error is larger.
Moreover, because factors such as viscous crude sample viscosity are big, and sample transfer pipeline bore is too small, pipeline is too long, viscosity test sample transfer is managed in the process
The case where line blocks happens occasionally, or even since pipeline blocking influences the stability of entire pressure system, causes stress distribution not
, the phenomenon that sample deaerates, causes viscosity test data precision relatively low.
Summary of the invention
For the above-mentioned prior art, for the phenomenon for overcoming pressure transient, test error during sample transfer larger, originally
Invention provides one kind novel viscosity of thickened oil measurement method, can overcome the defect of existing method, to using fall-ball type viscosity
Meter measurement viscous crude, super-viscous oil viscosity have preferable applicability.
The present invention is achieved by the following technical solutions：
A method of measurement viscosity of thickened oil, steps are as follows：
(1) high pressure falling ball viscometer is cleaned up, selection measurement steel ball is put into test chamber；
(2) sample storage device is connect with high-pressure metering pump A, is crude oil sample to be measured in sample storage device, pressure is sample stratum
Pressure value；
(3) high-pressure metering pump B is connect with high pressure falling ball viscometer by being pressurized pipeline, junction is equipped with valve A；It will storage
Sample device is connected with high pressure falling ball viscometer by sample transfer pipeline, and junction is equipped with valve B, valve C；
(4) high pressure falling ball viscometer is heated up and constant more than formation temperature 4h, evacuates high pressure falling ball viscometer extremely
Continue to take out 30min after 200Pa；
(5) solution of zinc sulfate will be saturated full of pressurization pipeline, high pressure falling ball viscometer, sample transfer pipeline by opening valve A；It is promoted
The pressure of high pressure falling ball viscometer is to value formation pressure；Valve A is closed, disassembly high pressure falling ball viscometer is with high-pressure metering pump B's
Connection pressurization pipeline；
(6) valve for being located at sample storage device with sample transfer pipeline (for connecting sample storage device and high pressure falling ball viscometer) junction is opened
Door C, sample storage device is connected to sample transfer pipeline, the angle of high pressure falling ball viscometer is rotated, so that being located on high pressure falling ball viscometer
The direction valve A it is downward；
(7) strata pressure is maintained, constantly reduces the volume of high-pressure metering pump A, crude oil sample displacement is entered into high pressure falling sphere and is glued
In degree meter, so that the saturation solution of zinc sulfate in high pressure falling ball viscometer replaces discharge, after solution of zinc sulfate all discharge, after
Continuous row replaces 20ml crude oil sample；
(8) pressure of high-pressure metering pump A is adjusted to strata pressure, measurement angle is selected, when measuring falling sphere by Dosimetry
Between, each pressure stage at least measures two angles, and each angle parallel measures five times (this step is identical as conventional method).
Method of the invention makees medium full of viscosimeter test chamber with the solution of zinc sulfate of saturation, is full of sample transfer in sample
After pipeline and viscosimeter, the complete displacement of the solution of zinc sulfate of saturation is gone out into viscosimeter, and the sample of the row's of punching 2 times or more viscosimeter volume
Product.During entire sample transfer, system pressure is maintained by drainage sample transfer, gassiness oil sample expansion space can be reduced, effectively
Prevent stratum viscous crude sample from deaerating.
Method of the invention realizes stratum viscous crude fluid balance sample transfer, really by the way of different attribute fluid substitution
Protect viscous crude sample transmittance process in, the change of fluid state and property will not occur, ensure that test fluid unicity,
Stability, and the real reliability of analysis result.
Detailed description of the invention
Fig. 1：The connection schematic diagram of measurement method instrument of the invention.
Wherein, 1, high-pressure metering pump A；2, sample storage device；3, high pressure falling ball viscometer；4, valve A；5, valve B；6, valve C；
7, sample transfer pipeline；8, high-pressure metering pump B；9, it is pressurized pipeline.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.
Instrument involved in following embodiments, reagent, material etc. are unless otherwise noted existing in the prior art
Conventional instrument, reagent, material etc., can be obtained by regular commercial sources.Experimental method involved in following embodiments, inspection
Survey method etc. is unless otherwise noted existing routine experiment method in the prior art, detection method etc..
The method for measuring viscosity of thickened oil, steps are as follows：
(1) high pressure falling ball viscometer 3 is cleaned up, selection measurement steel ball is put into test chamber；
(2) sample storage device 2 is connect with high-pressure metering pump A1, is crude oil sample to be measured in sample storage device 2, pressure is for sample
It is laminated force value；
(3) high-pressure metering pump B8 is connect with high pressure falling ball viscometer 3 by being pressurized pipeline 9, junction is equipped with valve A4；
Sample storage device 2 and high pressure falling ball viscometer 3 are connected by sample transfer pipeline 7, junction is equipped with valve B5, valve C6；
(4) by high pressure falling ball viscometer 3 heat up and it is constant more than formation temperature 4h, evacuate high pressure falling ball viscometer 3 to
Continue to take out 30min after 200Pa；
(5) solution of zinc sulfate will be saturated full of pressurization pipeline 9, high pressure falling ball viscometer 3, sample transfer pipeline 7 by opening valve A4；
The pressure of high pressure falling ball viscometer 3 is promoted to value formation pressure；Valve A4 is closed, high pressure falling ball viscometer 3 and high-pressure gauge are dismantled
The connection of amount pump B8 is pressurized pipeline 9；
(6) sample storage device 2 is connected to by Open valve C6 with sample transfer pipeline 7, rotates the angle of high pressure falling ball viscometer 3, so that
The direction valve A4 being located on high pressure falling ball viscometer 3 is downward；
(7) strata pressure is maintained, constantly reduces the volume of high-pressure metering pump A1, crude oil sample displacement is entered into high pressure falling sphere and is glued
In degree meter 3, so that the saturation solution of zinc sulfate in high pressure falling ball viscometer 3 replaces discharge, after solution of zinc sulfate all discharge,
Continue row for 20ml crude oil sample；
(8) pressure of high-pressure metering pump A1 is adjusted to strata pressure, measurement angle is selected, when measuring falling sphere by Dosimetry
Between, each pressure stage at least measures two angles, and each angle parallel measures five times (this step is identical as conventional method).
Sample test example：
PL15-2 well oil well basic data, as shown in table 1.
Table 1
It is detected using viscosity of thickened oil experimental method of the present invention and conventional method, analysis Comparative result is shown in Table 2.
The conventional crude viscosity determining procedure, is shown in《GB/T 26981-2012 reservoir fluid Physical Property Analysis method》, such as
Under：
(1) by viscosimeter heat up and it is constant more than formation temperature 4h, evacuate viscosimeter to 200Pa after continue take out 30min；
(2) sing-phase crude oil is transferred in viscosimeter to and is kept pressure punching row's 2 times or more viscosimeter volume, is made fresh single-phase
Oil sample is full of viscosimeter.
Table 2
As can be seen from Table 2, since viscosity of crude is high, poor fluidity, entering viscosity in oil sample using conventional method tested viscosity
During meter, Oil-gas Separation forms oil gas two-phase, causes viscosity test results less than normal, be significantly less than true measurement, hence it is evident that
Deviate normal scope of experiment.And test method of the invention is used, the wrong phenomenon of oil gas two-phase laminated flow can be avoided the occurrence of, is reached
To true fluid state and satisfactory result.
Above-mentioned, although specific embodiments of the present invention have been described in conjunction with the embodiments, not protects to the present invention
The limitation of range, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art
The various modifications or changes that can be made are not needed to make the creative labor still within protection scope of the present invention.
Claims (1)
1. a kind of method for measuring viscosity of thickened oil, it is characterised in that：Steps are as follows：
（1）By high pressure falling ball viscometer（3）It cleans up, selection measurement steel ball is put into test chamber；
（2）By sample storage device（2）With high-pressure metering pump A（1）Connection, sample storage device（2）Interior is crude oil sample to be measured, and pressure is sample
Value formation pressure；
（3）By high-pressure metering pump B（8）With high pressure falling ball viscometer（3）By being pressurized pipeline（9）Connection, junction are equipped with valve A
（4）；By sample storage device（2）With high pressure falling ball viscometer（3）It is connected by sample transfer pipeline 7, junction is equipped with valve B（5）, valve C
（6）；
（4）By high pressure falling ball viscometer（3）It heats up and constant more than formation temperature 4h, evacuates high pressure falling ball viscometer（3）Extremely
Continue to take out 30min after 200Pa；
（5）Open valve A（4）Saturation solution of zinc sulfate is full of pressurization pipeline（9）, high pressure falling ball viscometer（3）, sample transfer pipeline
（7）；Promote high pressure falling ball viscometer（3）Pressure to value formation pressure；Close valve A（4）, dismantle high pressure falling ball viscometer
（3）With high-pressure metering pump B（8）Connection be pressurized pipeline（9）；
（6）Unlatching is located at sample storage device（2）With sample transfer pipeline（7）The valve C of junction（6）, by sample storage device（2）With sample transfer pipeline
（7）Connection rotates high pressure falling ball viscometer（3）Angle so that being located at high pressure falling ball viscometer（3）On valve A（4）Direction
Downwards；
（7）Strata pressure is maintained, high-pressure metering pump A is constantly reduced（1）Volume, crude oil sample displacement is entered into high pressure falling ball viscosity
Meter（3）In, so that high pressure falling ball viscometer（3）In saturation solution of zinc sulfate replace discharge, by solution of zinc sulfate all be discharged
Afterwards, continue row for 20ml crude oil sample；
（8）Adjust high-pressure metering pump A（1）Pressure to strata pressure, measurement angle is selected, when by Dosimetry measurement falling sphere
Between, each pressure stage at least measures two angles, and each angle parallel measures five times.
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| RU2694074C1 (en) * | 2018-07-02 | 2019-07-09 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Владивостокский государственный университет экономики и сервиса" (ВГУЭС) | Device for measuring viscosity of liquid under high pressure conditions |
| CN114383976A (en) * | 2021-11-18 | 2022-04-22 | 南通铂拓实验设备有限公司 | Supercritical carbon dioxide system viscosity tester and test method thereof |
| CN117589635B (en) * | 2024-01-18 | 2024-03-19 | 四川职业技术学院 | Method and device for measuring influence of colloid asphalt on gelation characteristics of waxy crude oil pipeline |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999023470A1 (en) * | 1997-11-03 | 1999-05-14 | Diesse Diagnostica Senese S.R.L. | Instrument and method for measuring the viscosity of a liquid |
| CN202886164U (en) * | 2012-10-31 | 2013-04-17 | 中国石油化工股份有限公司 | Device for performing formation test on high-pressure physical property sample transferring on |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010020435A1 (en) * | 2008-08-22 | 2010-02-25 | Services Petroliers Schlumberger | Universal flash system and apparatus for petroleum reservoir fluids study |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999023470A1 (en) * | 1997-11-03 | 1999-05-14 | Diesse Diagnostica Senese S.R.L. | Instrument and method for measuring the viscosity of a liquid |
| CN202886164U (en) * | 2012-10-31 | 2013-04-17 | 中国石油化工股份有限公司 | Device for performing formation test on high-pressure physical property sample transferring on |
Non-Patent Citations (1)
| Title |
|---|
| 低效稠油区块开发中强负压解堵技术的应用;彭兵;《内蒙古石油化工》;20111231(第18期);100-101 * |
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