CN205607955U - CO2 solubility and foaming stabilization testing arrangement in crude oil - Google Patents
CO2 solubility and foaming stabilization testing arrangement in crude oil Download PDFInfo
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- CN205607955U CN205607955U CN201620167542.2U CN201620167542U CN205607955U CN 205607955 U CN205607955 U CN 205607955U CN 201620167542 U CN201620167542 U CN 201620167542U CN 205607955 U CN205607955 U CN 205607955U
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Abstract
The utility model provides a CO2 solubility and foaming stabilization testing arrangement in crude oil, including gas injection portion, inlet pressure regulation and control portion, foam test portion and outlet pressure regulation and control portion, through the pressure of jointly adjusting of inlet pressure regulation and control portions two -stage valve in can the transparent reation kettle of accurate control, utilize the circulating water between water bath with thermostatic control and transparent water jacket to carry out accurate temperature control to transparent reation kettle, utilize gas flowmeter can precise measurement to pour into transparent reation kettle's CO2 volume into, and then set for under temperature and the pressure condition CO2's in the crude oil solubility. Transparent reactor tube body is the visual observation of transparent material in order to realize the foam stabilization state. The utility model discloses the actual separation technology who dissolves gas crude oil can simulate, can to under different temperatures and the pressure condition in the crude oil CO2's the stability characteristics that dissolves characteristic and CO2 foam test and appraise, it is accurate to have control, measures accurate advantage, realizes preferred to the separation technology key parameter, provides the basis for the optimal design and the high -efficient operation of splitter.
Description
Technical field
This utility model relates to CO in a kind of crude oil2Dissolubility and foam stabilization system safety testing device, CO in crude oil under test evaluation different temperatures and pressure condition2Dissolution characteristics and CO2The stability characteristic (quality) of foam.This utility model belongs to oil-gas gathering and transportation system multi-phase separation technical field.
Background technology
CO2Technology of reservoir sweep is as an oil recovery technique reached its maturity, the most at home and abroad employed in oil field development.Oil field development practice have shown that, CO2Technology of reservoir sweep is raising recovery ratio, reduces production cost and seal CO up for safekeeping2Effective means.But, use and the crude oil of this technology extraction dissolve a large amount of CO2Gas, is easily caused crude oil and foams and form the foam that stability is stronger, cause separation equipment not efficiently separate, and causes the whole gathering system cannot be properly functioning.
CO2Gas dissolubility in crude oil is higher, but the physicochemical property of different crude oils differs greatly, it is impossible to Accurate Prediction CO2Meltage, it is therefore necessary to test crude oil in CO2Dissolution characteristics, for gathering system process optimization provide underlying parameter.Meanwhile, in order to effectively remove the CO in crude oil2Gas, improves the efficiency of separation equipment, it is necessary to test CO2The stability characteristic (quality) of foam, design and operation for separation equipment provide foundation.
Existing foam stability evaluation methodology difference is mainly reflected in bubbling mode and two aspects of evaluation index.Bubbling mode is divided into two kinds according to principle difference, and one is by liquid aerating, dispersion or disturbance, so that mixing bubble in liquid, such as: air-flow method, Ross-Miles method and Warning Blender method；Another kind is by molten gas-liquid blood pressure lowering bubble.Meanwhile, the physicochemical property of dissolved gas crude oil is stressed and temperature impact is relatively big, and the foam stability evaluation methodology under normal temperature and pressure can not truly reflect the characteristic of foam under actual temperature and pressure.This utility model device can accurate CO in test and evaluation dissolved gas crude oil pressure reduction2The stability characteristic (quality) of foam.
Evaluation index for foam stability, Chinese scholars defines the parameters such as half foam life period, foamed silver, foam integrated performance index, Chinese patent 201410724298.0 (granted patent notification number CN 104502059 A) discloses foam stabilization system safety testing device and method of work under a kind of pressure oscillation, and this patent evaluates foam characteristic with discharge opeing volume.United States Patent (USP) 5853618 (granted patent notification number US 005853618A) has invented a kind of foam preparation processes, and defines foaming properties with the half-life of foam volume.The two patent does not all account for the liquid phase volume impact on foam volume, and this utility model analyzes entirely declining the time of foam with opposed foam volume for index.
In order to simulate CO in actual production process2The gas-liquid separation process of foaming crude oil, it is necessary to invent a set of test device, this device can reproduce certain pressure and at a temperature of the molten gas process of crude oil, and to CO in crude oil2Dissolubility be measured；Gathering system actual production technique can be simulated, to CO in dissolved gas crude oil simultaneously2The stability characteristic (quality) of foam is evaluated；Realizing preferred to separating technology key parameter, optimization design and Effec-tive Function for separation equipment provide foundation.
Summary of the invention
This utility model provides CO in a kind of crude oil2Dissolubility and foam stabilization system safety testing device, it is possible to CO in crude oil under test different temperatures and pressure condition2Dissolution characteristics, simultaneously can test CO under the conditions of different temperatures, pressure and rate of pressure reduction2The stability characteristic (quality) of foam, solves CO in actual production technique2Dissolubility and the test problem of foam stability.The test result of this test device can be as the design of gathering system separation equipment and the reference frame run.
This utility model also provides for the method for testing of a kind of above-mentioned test device, and this method of testing, using foam relative volume as foaming properties index, can get the foam relative volume complete variation tendency on time dimension, it is possible to evaluate CO more accurately2The stability characteristic (quality) of foam.
CO in a kind of crude oil2Dissolubility and foam stabilization system safety testing device, it is characterized in that, including gas cylinder, gas cylinder air relief valve and the first valve it is sequentially installed with on the export pipeline of gas cylinder, described first valve connects the second valve and entrance pressure regulator valve respectively by threeway, the described second valve other end is connected with the top of Dewar vessel, and described Dewar vessel top is provided with vacuum meter and vacuum pump, bottom are additionally provided with the 3rd valve；The described entrance pressure regulator valve other end passes sequentially through the 4th valve, inlet gas flow rate meter, the 5th valve are connected with transparent reaction still；Between entrance pressure regulator valve to transparent reaction still, it is additionally provided with the bypass valve family status six valve being in parallel with above-mentioned 4th valve, inlet gas flow rate meter, the 5th valve；Described transparent reaction still includes that outside wall surface indicates graduated transparent cylinder, cylinder is respectively arranged at two ends with top cover and bottom up and down, transparent water jacket it is provided with outside transparent reaction still, transparent water jacket is connected with water bath with thermostatic control, and recirculated water circulates to keep transparent reaction still temperature constant between transparent water jacket and water bath with thermostatic control；Transparent reaction bottom lid and top cover are respectively equipped with temperature sensor and gas outlet, wherein gas outlet communicates with pressure transducer, transparent reaction still top cover is additionally provided with stirring motor, and the shaft of this stirring motor is positioned at inside transparent cylinder, and shaft is provided with stirring paddle；Described water bath with thermostatic control, temperature sensor, pressure transducer and stirring motor are connected with control chamber respectively；The gas outlet of described transparent reaction still top cover also passes sequentially through the 7th valve, exit gas effusion meter, the 8th valve are connected with outlet back pressure valve, in the gas outlet of transparent reaction still top cover between outlet back pressure valve, it is additionally provided with the bypass valve family status nine valve being in parallel with above-mentioned 7th valve, exit gas effusion meter, the 8th valve.
Described transparent reaction bottom covers and is additionally provided with evacuation port.
CO in a kind of crude oil2Dissolubility and foam stabilization system safety testing device, it is characterised in that including gas injection section, inlet pressure regulation and control portion, foam test department and outlet pressure regulation and control portion, described each portion is sequentially connected in series.
Described gas injection section includes gas cylinder, gas cylinder air relief valve and the first valve being sequentially connected with along gas flow direction, and described first valve in parallel is provided with the second valve and Dewar vessel；Described Dewar vessel top connects vacuum meter and vacuum pump, and bottom connects the 3rd valve.
Described inlet pressure regulation and control portion, including entrance pressure regulator valve, the 4th valve, inlet gas flow rate meter, the 5th valve and the 6th valve.6th valve place pipeline and the 4th valve, inlet gas flow rate meter and the 5th valve place pipeline constitute parallel pipeline.
Described foam test department, including transparent reaction still and control chamber；Described transparent reaction still includes reactor cylinder, reactor bottom and reactor top cover, is provided with transparent water jacket outside described reactor cylinder, and described transparent water jacket forms closed circuit with water bath with thermostatic control；Described reactor bottom is provided with temperature sensor；Described reactor top cover is provided with pressure transducer and mixing part, and described mixing part is provided with motor, shaft, stirring paddle.
Described outlet pressure regulation and control portion, including the 7th valve, exit gas effusion meter, the 8th valve, the 9th valve and outlet back pressure valve.9th valve place pipeline and the 7th valve, exit gas effusion meter and the 8th valve place pipeline constitute parallel pipeline.
Work process of the present utility model is the solution gas in vacuum pump suction crude oil and the air in transparent reaction still, and gas cylinder provides CO2Gas, the combine regulation of gas cylinder air relief valve and two-stage valve realizes Stress control, and the recirculated water in transparent water jacket realizes temperature control, crude oil and CO under repeatedly pressure regulation realizes uniform temperature and pressure2Gas dissolution equilibrium.Inlet gas flow rate meter integrated flow deducts and dissolves CO under the gas volume in transparent reaction still i.e. uniform temperature and pressure condition in crude oil2The volume of gas.The combine regulation of outlet two-stage valve realizes the control to rate of pressure reduction, and by transparent reaction still observation crude oil and foam, selecting foam is index relative to the volume of crude oil, evaluates CO under uniform temperature, pressure and rate of pressure reduction2The stability characteristic (quality) of foam.
Ultimate principle of the present utility model is the CO dissolved in crude oil2Gas declines and bubble along with pressure, and bubble rises to liquid level inside crude oil, will not vanish immediately, but just vanishes through certain time.Therefore the cumulative volume of crude oil and foam can experience one increases to maximum, is then lowered into the process of initial volume.In this process, with foam relative to the volume of crude oil as index, it is possible to accurate evaluation CO2The stability characteristic (quality) of foam.
The beneficial effects of the utility model are, can accurately measure under different temperatures and pressure condition CO in crude oil2Dissolubility, CO under the conditions of exact evaluation different temperatures, pressure and rate of pressure reduction2The stability characteristic (quality) of foam.By the solution gas in vacuum pump suction crude oil and the air in transparent reaction still, increase certainty of measurement.The gas injection process of transparent reaction still can be accurately controlled by the combine regulation of gas cylinder air relief valve and inlet pressure regulation and control portion two-stage valve；CO in crude oil is achieved under different temperatures and pressure condition by inlet gas flow rate meter2The accurate measurement of dissolubility.Transparent reaction still achieves the visual inspection of foam stabilization state under various working, and the recirculated water in transparent water jacket ensure that the accurate control of transparent reaction still temperature.The pressure drop rate of transparent reaction still can be accurately controlled by the combine regulation of outlet pressure regulation and control portion two-stage valve.Opposed foam volume is used to analyze entirely declining the time of foam, the available foam relative volume complete variation tendency on time dimension, it is possible to evaluate CO more accurately2The stability characteristic (quality) of foam.
Accompanying drawing explanation
Fig. 1 is flow chart of the present utility model.
Wherein, 1 gas cylinder 2 gas cylinder air relief valve 3 first valve 4 second valve 5 Dewar vessel 6 vacuum meter 7 vacuum pump 8 the 3rd valve 9 entrance pressure regulator valve 10 the 4th valve 11 inlet gas flow rate meter 12 the 5th valve 13 the 6th valve 14 transparent reaction still 15 transparent water jacket 16 water bath with thermostatic control 17 temperature sensor 18 pressure transducer 19 motor 20 shaft 21 stirring paddle 22 control chamber 23 the 7th valve 24 exit gas effusion meter 25 the 8th valve 26 the 9th valve 27 outlet back pressure valve.
Fig. 2 is the structure chart of this utility model transparent reaction still.
Wherein, 15 transparent water jacket 17 temperature sensor 18 pressure transducer 19 stirring motor 20 shaft 21 stirring paddle 28 circulator baths export 29 circulator bath entrance 30 evacuation port 31 gas outlets.
Detailed description of the invention
nullSuch as Fig. 1、2，This utility model includes: gas cylinder (1)、Gas cylinder air relief valve (2)、First valve (3)、Second valve (4)、Dewar vessel (5)、Vacuum meter (6)、Vacuum pump (7)、3rd valve (8)、Entrance pressure regulator valve (9)、4th valve (10)、Inlet gas flow rate meter (11)、5th valve (12)、6th valve (13)、Transparent reaction still (14)、Transparent water jacket (15)、Water bath with thermostatic control (16)、Temperature sensor (17)、Pressure transducer (18)、Motor (19)、Shaft (20)、Stirring paddle (21)、Control chamber (22)、7th valve (23)、Exit gas effusion meter (24)、8th valve (25)、9th valve (26)、Outlet back pressure valve (27)、Circulator bath outlet (28)、Circulator bath entrance (29)、Evacuation port (30)、Gas outlet (31) etc..
After described gas cylinder (1), gas cylinder air relief valve (2) is installed.After first valve (3) is installed on gas cylinder air relief valve (2), cylinder gas supply can be cut off.Vacuum pump (7) can aspirate the solution gas in crude oil and the air in transparent reaction still (14), and vacuum meter (6) may indicate that the vacuum in Dewar vessel (5).The entrance and exit of Dewar vessel (5) is controlled by the second valve (4) and the 3rd valve (8) respectively.
Described entrance pressure regulator valve (9) and the 4th valve (10) and the 5th valve (12) combine regulation pressure, control gas cylinder to transparent reaction still gas injection；The gas volume of pipeline is flow through in inlet gas flow rate meter (11) metering；6th valve (13) is bypass valve.
Described transparent reaction still (14) cylinder is transparent material cylinder, and outside wall surface is labeled with altitude scale, can observe crude oil and foam, monitors and measure the existence time of foam in foaming crude oil intuitively；Transparent reaction still (14) cylinder wall thickness is 5mm, and internal diameter is 50mm, and height is 500mm；The ratio of height and internal diameter is 10, it is possible to reduce the cubing error that horizontal plane foam skewness causes.
Described transparent reaction still (14) outside is provided with transparent water jacket (15), transparent water jacket (15) is connected with water bath with thermostatic control (16), recirculated water circulates between transparent water jacket (15) and water bath with thermostatic control (16), keeps transparent reaction still (14) temperature constant.
Described temperature sensor (17) is installed on transparent reaction still (14) bottom, temperature in test transparent reaction still, and be connected with control chamber (22), described pressure transducer (18) is installed on transparent reaction still (14) top cover, pressure in test transparent reaction still, is connected with control chamber (22).
Described motor (19) is installed on transparent reaction still (14) top cover, drives shaft (20) to rotate.Stirring paddle (21) is arranged on shaft (20), it is achieved stirring crude oil, promotes CO2Gas dissolves.Motor (19) is connected with control chamber (22), and its rotating speed is regulated by control chamber (22).
Described outlet back pressure valve (27) jointly controls the pressure drop rate in transparent reaction still with the 7th valve (23) and the 8th valve (25)；The gas volume of pipeline is flow through in exit gas effusion meter (24) metering；9th valve (26) is bypass valve.
Claims (2)
1. CO in a crude oil2Dissolubility and foam stabilization system safety testing device, it is characterised in that include gas cylinder (1), gas cylinder (1)
Export pipeline on be sequentially installed with gas cylinder air relief valve (2) and the first valve (3), described first valve (3) pass through three reduction of fractions to a common denominators
Do not connect the top of the second valve (4) and entrance pressure regulator valve (9), described second valve (4) other end and Dewar vessel (5)
Being connected, described Dewar vessel (5) top is provided with vacuum meter (6) and vacuum pump (7), bottom are additionally provided with the 3rd valve (8)；
Described entrance pressure regulator valve (9) other end passes sequentially through the 4th valve (10), inlet gas flow rate meter (11), the 5th valve
(12) it is connected with transparent reaction still (14)；Between entrance pressure regulator valve (9) to transparent reaction still (14), be additionally provided with
The bypass valve family status six valve that above-mentioned 4th valve (10), inlet gas flow rate meter (11), the 5th valve (12) are in parallel
Door (13)；
Described transparent reaction still (14) includes that outside wall surface indicates graduated transparent cylinder, and cylinder is respectively arranged at two ends with top cover up and down
And bottom, transparent reaction still (14) outside is provided with transparent water jacket (15), transparent water jacket (15) and water bath with thermostatic control (16) phase
Even, recirculated water circulates to keep transparent reaction still (14) temperature between transparent water jacket (15) and water bath with thermostatic control (16)
Constant；
Transparent reaction still (14) bottom and top cover are respectively equipped with temperature sensor (17) and gas outlet (31), and wherein gas goes out
Mouth (31) communicates with pressure transducer (18), and transparent reaction still (14) top cover is additionally provided with stirring motor (19), this stirring electricity
The shaft (20) of machine (19) is positioned at inside transparent cylinder, and shaft (20) is provided with stirring paddle (21)；Described constant temperature
Water-bath (16), temperature sensor (17), pressure transducer (18) and stirring motor (19) are respectively with control chamber (22) even
Connect；
The gas outlet (31) of described transparent reaction still (14) top cover also passes sequentially through the 7th valve (23), exit gas flow
Meter (24), the 8th valve (25) are connected with outlet back pressure valve (27), in the gas outlet (31) of transparent reaction still (14) top cover
Between outlet back pressure valve (27), it is additionally provided with and above-mentioned 7th valve (23), exit gas effusion meter (24), the 8th valve
(25) the bypass valve family status nine valve (26) being in parallel.
CO in a kind of crude oil the most according to claim 12Dissolubility and foam stabilization system safety testing device, it is characterised in that institute
It is additionally provided with evacuation port (30) on transparent reaction still (14) bottom stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620167542.2U CN205607955U (en) | 2016-03-04 | 2016-03-04 | CO2 solubility and foaming stabilization testing arrangement in crude oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620167542.2U CN205607955U (en) | 2016-03-04 | 2016-03-04 | CO2 solubility and foaming stabilization testing arrangement in crude oil |
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| Publication Number | Publication Date |
|---|---|
| CN205607955U true CN205607955U (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620167542.2U Expired - Fee Related CN205607955U (en) | 2016-03-04 | 2016-03-04 | CO2 solubility and foaming stabilization testing arrangement in crude oil |
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| CN (1) | CN205607955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588922A (en) * | 2016-03-04 | 2016-05-18 | 中国石油大学(华东) | Device and method for testing solubility of CO2 and stability of foam in crude oil |
-
2016
- 2016-03-04 CN CN201620167542.2U patent/CN205607955U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588922A (en) * | 2016-03-04 | 2016-05-18 | 中国石油大学(华东) | Device and method for testing solubility of CO2 and stability of foam in crude oil |
| CN105588922B (en) * | 2016-03-04 | 2017-06-23 | 中国石油大学(华东) | CO in a kind of crude oil2Solubility and foam stabilization system safety testing device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20170304 |
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| CF01 | Termination of patent right due to non-payment of annual fee |