CN204789227U - Anhydrous fracturing fluid loss property testing arrangement of carbon dioxide - Google Patents
Anhydrous fracturing fluid loss property testing arrangement of carbon dioxide Download PDFInfo
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- CN204789227U CN204789227U CN201520466432.1U CN201520466432U CN204789227U CN 204789227 U CN204789227 U CN 204789227U CN 201520466432 U CN201520466432 U CN 201520466432U CN 204789227 U CN204789227 U CN 204789227U
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Abstract
The utility model provides the anhydrous fracturing fluid of carbon dioxide is strained and is lost characteristic testing arrangement, the device at first passes through first valve and second valve and gas purifier entry linkage respectively by first gas cylinder and second gas cylinder, the gas purifier export connects gradually the volume flow rate meter, refrigerating system and liquid CO2 storage tank, the third valve has concatenated after refrigerating system and liquid CO2 storage tank are parallelly connected again, liquid CO2 tank outlet is connected with the fourth valve simultaneously, first pressure gauge, the 5th valve and CO2 pump, then join another branch road that is connected with reagent jar and reagent pump, connect the relief valve at two branch road meets, and connect gradually first check valve, the pre -heater, get into the thermostated container behind thermometer and the second pressure gauge, be equipped with in the thermostated container to strain and commit a breach of etiquette, the rock core holder, it presses the branch road to add the back pressure branch road and add the ring, at thermostated container exit linkage refrigerator, mass flow meter and fracturing fluid recovery unit, the utility model discloses the device simulate specially and test the anhydrous fracturing fluid of carbon dioxide under the different additive ratio under different temperatures, different pressure and different rate of shear's the circumstances fracturing fluid to the mistake degree of straining of reservoir rock core.
Description
Technical field
The utility model relates to the anhydrous fracturing technique field of carbon dioxide, particularly the anhydrous fracturing fluid leak characteristic test device of a kind of carbon dioxide.
Background technology
Along with the extensive exploration and development hidden unconventionaloil pool, the anhydrous fracturing technique of carbon dioxide just receives much concern due to the characteristic of its " anhydrous pressure break ".CO
2anhydrous fracturing technique mainly uses CO
2anhydrous fracturing liquid is (primarily of liquid CO
2be mixed to form with minute quantity chemical addition agent) replace traditional aqueous fracturing fluid to carry out reservoir reconstruction, while raising volume fracturing correctional effect, can available protecting reservoir, and save a large amount of water resources.
But site work often need measure CO
2anhydrous of the fracturing fluid crucial fluid parameter, wherein just comprises filtration characteristics parameter.But, actual market study finds, the operation of existing working-yard, or the fracturing fluid leak characteristic test instrument that laboratory study is conventional, mostly be mainly for conventional liq fracturing liquid, such as gelled fracturing fluid or riverfrac treatment liquid, to system and the equipment of the of the fracturing fluid filtration characteristics of this gas of special test, market does not also have ripe production marketing.
Therefore, we have invented this proving installation.A kind of carbon dioxide of the utility model anhydrous fracturing fluid leak characteristic test device can simulate and the anhydrous fracturing liquid of carbon dioxide under testing different additive proportioning at the situation fracturing liquid of different temperatures, different pressures and different shear rate to the leak-off degree of reservoir core.
Summary of the invention
In order to the problem that the equipment and instrument that overcome the existence of above-mentioned prior art do not match, the purpose of this utility model there are provided the anhydrous fracturing fluid leak characteristic test device of a kind of carbon dioxide, the leak-off parameter of the anhydrous fracturing liquid of carbon dioxide under different temperatures, different pressures and different shear rate under special test different additive proportioning.
In order to achieve the above object, the technical scheme that the utility model is taked is:
The anhydrous fracturing fluid leak characteristic test device of a kind of carbon dioxide, comprise the first gas cylinder 1 and the second gas cylinder 2, and the first gas cylinder 1 is connected with the entrance of gas purifier 5 with the second valve 4 respectively by the first valve 3 with the second gas cylinder 2, the outlet of gas purifier 5 connects volumetric displacement meter 6, refrigeration system 7 and liquid CO successively
2storage tank 8, wherein refrigeration system 7 and liquid CO
2the 3rd valve 9 is serially connected with again, liquid CO after storage tank 8 parallel connection
2storage tank 8 exports and is connected with the 4th valve 10, first pressure gauge 12, the 5th valve 11 and CO simultaneously
2pump 13, then the branch road that another is connected with reagent pot 14 and reagent pump 15 in turn is converged, safety valve 16 is connected with at two branch road meets, and enter constant temperature oven 21 after connecting the first retaining valve 17, primary heater 18, thermometer 19 and the second pressure gauge 20 successively, be connected with refrigerator 38 and mass flowmeter 39 and fracturing liquid retracting device 40 in turn in constant temperature oven 21 outlet.
Described constant temperature oven 21 is inner, and what be connected with the second pressure gauge 20 is be connected with filtration device 23, core holding unit 24, the 3rd pressure gauge 25, the 7th valve 26 in turn after the 6th valve the 22, six valve 22, connects the extraneous refrigerator 38 in constant temperature oven exit afterwards; At the endpiece of filtration device 23 porch and core holding unit 24, differential pressure pickup 27 is installed; Be connected with in core holding unit 24 exit and add back pressure branch road, add on back pressure branch road and connect check valve 28, second retaining valve 29, backpressure pump 30 and N successively
2bottle 31; Be connected with in core holding unit 24 side and add ring pressure branch road, add on ring pressure branch road and connect the 8th valve 32 successively, ring pressure follows the tracks of pump 33, filtrator 34 and fluid reservoir 35, and the lower end of fluid reservoir 35 is designed with the tenth valve 37; Meanwhile, the 9th valve 36 is designed with in filtration device 23 lower end.
Described device can select the gas cylinder i.e. access quantity of the first gas cylinder 1 and the second gas cylinder 2 as required flexibly, simultaneously the downward-sloping fixed placement of gas cylinder mouth; Described liquid CO
2storage tank 8, in refrigeration system 7, is refrigeration system 7 part.
Described gas purifier 5 is to remove the impurity such as the water vapor that mixes in original carbon dioxide, purifies and obtains high precision carbon dioxide.
Described CO
2pump 13 and reagent pump 15 adopt constant speed and constant pressure pump, as required, can select suitable specifications and models, and setting discharge capacity, regulates the flow of pump.Maximum working pressure (MWP) is more than 70MPa, thus condition of formation pressure when can simulate pressing crack construction.
Described safety valve 16 is arranged on CO
2two branch road meets of pump 13 and reagent pump 15.
Described first retaining valve 17 only allows the fracturing liquid flowing through safety valve 16 to flow to device constant temperature oven to be correlated with pipeline, and 29, the second retaining valve allows N
2back pressure is applied to core holding unit 24 end.
Described constant temperature oven 21 carries heating system and heat-insulation system, and temperature range is-30 ~ 150 DEG C, can be as required, select suitable model, design temperature, regulate fracturing liquid temperature when testing, thus simulated formation temperature conditions, and constant temperature oven 21 internal temperature can by its temperature sensor Real-Time Monitoring.
Described filtration device 23 can adopt the counter structure identical with U.S. CoreLab/Temco company FDS-800 type dynamic filtration and this equipment of formation damage evaluation system.
Described N
2bottle 31 is back pressure container, is pumped into by backpressure pump 30, for applying back pressure to core holding unit.
Store liquid in described fluid reservoir 35 and can be general clear water, follow the tracks of pump 33 by ring pressure, for applying confined pressure to core holding unit.
Described refrigerator 38, is arranged on the exit of constant temperature oven 21, thereafter quality of connection flowmeter 39, and its spacing is from as far as possible short, for the measurement of fracturing liquid discharge rate.
Described fracturing liquid retracting device 40, for recycling fracturing liquid, preventing pollution.
The all associated lines of described device all adopt 316L pipeline; And all pertinent instruments between the second pressure gauge 20 to refrigerator 38 and pipeline are all put in constant temperature oven.
Described volumetric displacement meter 6, first pressure gauge 12, CO
2pump 13, reagent pump 15, primary heater 18, thermometer 19, second pressure gauge 20, filtration device 23, the 3rd pressure gauge 25, differential pressure pickup 27 and backpressure pump 30, ring pressure follow the tracks of pump 33, refrigerator 38 is all connected digital acquisition and control card with mass flowmeter 39, for gathering pressure, temperature, flow, pressure reduction, rotating speed and pumping rate, the data treated generation raw data form gathered, analytical statement and curve map, generate database file form so that user flexibility uses simultaneously.
Compared to the prior art comparatively, the utility model possesses following advantage:
(1) the utility model be simulate specially and the anhydrous fracturing liquid of carbon dioxide testing the formation of different additive proportioning at the situation fracturing liquid of different temperatures, different pressures and different shear rate to the leak-off degree of reservoir core.
(2) in this device, the first gas cylinder 1 and the second gas cylinder 2 can select gas cylinder to access quantity as required flexibly, should deposit, so that preserve and export the carbon dioxide of liquefaction better when depositing by downward-sloping for bottle mouth of gas cylinder.
(3) in this device, refrigeration system 7 can experimentally need to set cryogenic temperature.The liquid CO that it is built-in
2storage tank 8 can store a certain amount of liquid CO
2.
(4) CO in this device
2pump 13 and reagent pump 15 adopt constant speed and constant pressure pump, as required, can select suitable specifications and models, and setting discharge capacity, regulates the flow of pump; Maximum working pressure (MWP) is more than 70MPa, condition of formation pressure when can simulate pressing crack construction.
(5) in this device, safety valve 16 is arranged on CO
2two branch road meets of pump 13 and reagent pump 15, prevent by CO
2the high-pressure fluid that after the adjuvant mixing of the liquid carbon dioxide that pump 13 pumps into and the different ratio that pumped into by reagent pump 15, supercharging is formed damages pipeline, guarantee pipeline safety.
(6) in this device, the first retaining valve 17 effectively can prevent from pumping into the high pressure fracture liquid backflow of pipeline, and enters at displacement differential pressure action fracturing liquid when the second retaining valve 29 effectively can prevent test and add back pressure branch road.
(7) in this device, constant temperature oven 21 carries heating system and heat-insulation system, and temperature range is-30 ~ 150 DEG C, is convenient to control fracturing liquid probe temperature; As required, suitable model can be selected, design temperature, regulate fracturing liquid temperature when testing, thus simulated formation temperature conditions, and constant temperature oven 21 internal temperature can by its temperature sensor Real-Time Monitoring.
(8) in this device, filtration device 23 and core holding unit 24 junction are a circular duct, and rock core spills an end face cruelly; Filtration device 23, include cutting system, by controlling AC servo motor parameter, the rotation cutting mechanism be connected with motor can be driven, and cylindric paddle significantly can reduce the shear failure to polymeric additive, thus fracturing liquid can be made to flow through rock core end face and simulate the shear flow of friction speed, make rock core end face forms filter cake under differential pressure action simultaneously, dynamic filtration process can be simulated.
(9) in this device, differential pressure pickup 27 is arranged on the endpiece of filtration device 23 porch and core holding unit 24, poor compared to putting pressure gauge side pressure in different measuring points portion, and differential pressure pickup is measured more accurate, and relative error is less.
(10) N in this device
2bottle 31 is back pressure container, applies back pressure, not only have the advantage that gas controlled pressure control accuracy is higher by backpressure pump 30 to core holding unit 24, and N
2physical property and chemical property all more stable.
(11) fluid reservoir 35 in this device, follow the tracks of pump 33 by ring pressure and apply confined pressure to core holding unit 24, the confined pressure controlling core holding unit 24 is greater than body pressure reduction all the time, thus can simulate effective dynamic filtration process.
(12) refrigerator 38 in this device, is arranged on the exit of constant temperature oven 21, thereafter quality of connection flowmeter 39, and its spacing is from as far as possible short, can improve the metering precision of the anhydrous of the fracturing fluid exudate of carbon dioxide, reduces test error.
(13) fracturing liquid retracting device 40 in this device, for reclaiming and processing discarded mini-frac liquid, prevents laboratory and environment.
(14) the 9th valve 36 and the tenth valve 37 in this device, not only may be used for emptying clean container inner, and the 9th valve 36 can also be used for the of the fracturing fluid quiet leak-off measurement of conventional liq.
(15) all associated lines of this device all adopt 316L pipeline; And all pertinent instruments during the second pressure gauge 20 to refrigerator 38 and pipeline are all put in constant temperature oven, compared to hot insulated line, the fracturing liquid stability of temperature and homogeneity everywhere when constant temperature oven more can maintain test.
(16) volumetric displacement meter 6, first pressure gauge 12, CO in this device
2pump 13, reagent pump 15, primary heater 18, thermometer 19, second pressure gauge 20, filtration device 23, the 3rd pressure gauge 25, differential pressure pickup 27 and backpressure pump 30, ring pressure follow the tracks of pump 33, refrigerator 38 is all connected digital acquisition and control card with mass flowmeter 39, for gathering pressure, temperature, flow, pressure reduction, rotating speed and pumping rate, the data treated generation raw data form gathered, analytical statement and curve map, generate database file form so that user flexibility uses simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model proving installation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 1, the first gas cylinder 1 and the second gas cylinder 2 gas respectively by after the first valve 3 and the second valve 4, through gas purifier 5 purify after, by volumetric displacement meter 6 metered flow.Then by refrigeration system 7, carbon dioxide refrigeration post liquefaction is stored in liquid CO
2in storage tank 8, through CO
2pump 13 intake line, and mix mutually with the adjuvant from the good different ratio of configured in advance in the reagent pot 14 being pumped into pipeline in another branch road by reagent pump 15, then when fluid pressurized is to after to a certain degree, by safety valve 16 and the first retaining valve 17, after primary heater 18 in right amount heating, enter in constant temperature oven 21 test different additive proportioning formed, the filtration characteristics of the anhydrous fracturing liquid of carbon dioxide under different pressures under different temperatures and different shear rate, then refrigerator 38 is passed through by its exudate refrigeration liquefying, and measure rear inflow fracturing liquid retracting device 40 by the mass flowmeter 39 of next-door neighbour.
In constant temperature oven test process, after add rock core in core holding unit 24, first open ring pressure and follow the tracks of pump 33 and fluid reservoir 35, apply confined pressure to rock core, and control the reading that its pressure is greater than the second pressure gauge 20 all the time; Then by backpressure pump 30 and N
2bottle 31 pairs of check valves apply controlled pressure, and its concrete pressure reads by the 3rd pressure gauge 25; Displacement pressure reduction in fracturing liquid dynamic filtration process can be read by differential pressure pickup 27; Regulating constant incubator heating system parameter again, control fracturing liquid probe temperature, simulated formation temperature conditions, and the inner actual temp of constant temperature oven 21 can by its temperature sensor Real-Time Monitoring; Finally regulate filtration device 23 upper end AC servo motor parameter, drive the rotation cutting mechanism be connected with motor, thus fracturing liquid can be made to flow through the sudden and violent leakage end of rock core in core holding unit 24 and simulate the shear flow of friction speed, carry out the lawyer's characteristic research under different shear rate.
In addition, this device also has data acquisition process function, realize computer operation: data acquisition system (DAS) comprises pressure, temperature, flow, pressure reduction, rotating speed and corresponding pumping rate, in order to ensure the reliability of measuring accuracy and control, digital collection control card in described utility model all adopts import numeral acquisition and control card, thus realizes digital collection transmission.
The data of computer acquisition are treated generates raw data form, analytical statement and curve map, generates database file form so that user flexibility uses simultaneously.
Principle of work of the present utility model is:
CO in first gas cylinder 1, second gas cylinder 2
2gas through refrigeration system 7 liquefied storage at liquid CO
2in storage tank 8, then by CO
2pump 13 intake line, and the adjuvant of the different ratio good with the configured in advance pumping into pipeline from another route reagent pump 15 mixes mutually, enter in constant temperature oven 21 after primary heater 18 in right amount heating, by the temperature of the heating system of regulating constant incubator 21 and the shearing rotational parameters of inner filtration device 23, can test different additive proportioning formed, the filtration characteristics of the anhydrous fracturing liquid of carbon dioxide under different pressures under different temperatures and different shear rate, finally by refrigerator 38 by its exudate refrigeration liquefying, and measure rear inflow fracturing liquid retracting device 40 by the mass flowmeter 39 of next-door neighbour, in test process, fracturing liquid total amount is pipeline input total amount, i.e. CO
2pump 13 and reagent pump 15 general input, after fracturing liquid test, surplus is mass flowmeter 39 measured value, in certain hour, under certain pressure and temperature conditions, the difference of carbon dioxide anhydrous fracturing liquid general input and its surplus is required dynamic filtration.
Claims (8)
1. the anhydrous fracturing fluid leak characteristic test device of carbon dioxide, it is characterized in that: comprise the first gas cylinder (1) and the second gas cylinder (2), and the first gas cylinder (1) is connected with the entrance of the second valve (4) with gas purifier (5) respectively by the first valve (3) with the second gas cylinder (2), the outlet of gas purifier (5) connects volumetric displacement meter (6), refrigeration system (7) and liquid CO successively
2storage tank (8), wherein refrigeration system (7) and liquid CO
2the 3rd valve (9) is serially connected with again, liquid CO after storage tank (8) parallel connection
2storage tank (8) outlet is connected with the 4th valve (10), the first pressure gauge (12), the 5th valve (11) and CO simultaneously
2pump (13), then the branch road that another is connected with reagent pot (14) and reagent pump (15) in turn is converged, safety valve (16) is connected with at two branch road meets, and enter constant temperature oven (21) after connecting the first retaining valve (17), primary heater (18), thermometer (19) and the second pressure gauge (20) successively, be connected with refrigerator (38), mass flowmeter (39) and fracturing liquid retracting device (40) in turn in constant temperature oven (21) outlet;
Described constant temperature oven (21) is inner, what be connected with the second pressure gauge (20) is the 6th valve (22), be connected with filtration device (23), core holding unit (24), the 3rd pressure gauge (25), the 7th valve (26) after 6th valve (22) in turn, connect the extraneous refrigerator (38) in constant temperature oven exit afterwards; At the endpiece of filtration device (23) porch and core holding unit (24), differential pressure pickup (27) is installed; Be connected with in core holding unit (24) exit and add back pressure branch road, add on back pressure branch road and connect check valve (28), the second retaining valve (29), backpressure pump (30) and N successively
2bottle (31); Be connected with in core holding unit (24) side and add ring pressure branch road, add on ring pressure branch road and connect the 8th valve (32) successively, ring pressure follows the tracks of pump (33), filtrator (34) and fluid reservoir (35), and the lower end of fluid reservoir (35) is designed with the tenth valve (37); Meanwhile, the 9th valve (36) is designed with in filtration device (23) lower end.
2. the anhydrous fracturing fluid leak characteristic test device of carbon dioxide according to claim 1, it is characterized in that: described device can select the gas cylinder i.e. access quantity of the first gas cylinder (1) and the second gas cylinder (2) as required flexibly, simultaneously the downward-sloping fixed placement of gas cylinder mouth; Described liquid CO
2storage tank (8), in refrigeration system (7), is refrigeration system (7) part.
3. the anhydrous fracturing fluid leak characteristic test device of carbon dioxide according to claim 1, is characterized in that: described CO
2pump (13) and reagent pump (15) adopt constant speed and constant pressure pump, and as required, can select specifications and models, setting discharge capacity, regulates the flow of pump; Its maximum working pressure (MWP) is more than 70MPa, thus condition of formation pressure when can simulate pressing crack construction.
4. the anhydrous fracturing fluid leak characteristic test device of carbon dioxide according to claim 1, it is characterized in that: described first retaining valve (17) only allows the fracturing liquid flowing through safety valve (16) to flow to device constant temperature oven to be correlated with pipeline, and the second retaining valve (29) only allows N
2back pressure is applied to core holding unit (24) end.
5. the anhydrous fracturing fluid leak characteristic test device of carbon dioxide according to claim 1, it is characterized in that: described constant temperature oven (21) carries heating system and heat-insulation system, temperature range is-30 ~ 150 DEG C, can be as required, select model, design temperature, regulate fracturing liquid temperature when testing, thus simulated formation temperature conditions, and constant temperature oven (21) internal temperature is by its temperature sensor Real-Time Monitoring.
6. the anhydrous fracturing fluid leak characteristic test device of carbon dioxide according to claim 1, is characterized in that: described N
2bottle (31) is back pressure container, is pumped into by backpressure pump (30), for applying back pressure to core holding unit (24); Storing liquid in described fluid reservoir (35) is clear water, follows the tracks of pump (33) by ring pressure, for applying confined pressure to core holding unit (24).
7. the anhydrous fracturing fluid leak characteristic test device of carbon dioxide according to claim 1, is characterized in that: described refrigerator (38) is for by fracturing liquid exudate refrigeration liquefying; Thereafter quality of connection flowmeter (39), and its spacing is from as far as possible short, for the measurement of fracturing liquid discharge rate.
8. the anhydrous fracturing fluid leak characteristic test device of carbon dioxide according to claim 1, is characterized in that: described volumetric displacement meter (6), the first pressure gauge (12), CO
2pump (13), reagent pump (15), primary heater (18), thermometer (19), second pressure gauge (20), filtration device (23), 3rd pressure gauge (25), differential pressure pickup (27) and backpressure pump (30), ring pressure follows the tracks of pump (33), refrigerator (38) is all connected digital acquisition and control card with mass flowmeter (39), for gathering pressure, temperature, flow, pressure reduction, rotating speed and pumping rate, the data treated generation raw data form gathered, analytical statement and curve map, generate database file form so that user flexibility uses simultaneously, the all associated lines of described device all adopt 316L pipeline.
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| CN201520466432.1U CN204789227U (en) | 2015-07-01 | 2015-07-01 | Anhydrous fracturing fluid loss property testing arrangement of carbon dioxide |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914012A (en) * | 2015-07-01 | 2015-09-16 | 中国华能集团清洁能源技术研究院有限公司 | Carbon dioxide no-water fracturing fluid filtration characteristics test system and test method |
| CN108088768A (en) * | 2017-12-28 | 2018-05-29 | 中国华能集团公司 | A kind of thin-tube type rheometer experimental system and experimental method |
| CN108120819A (en) * | 2017-12-14 | 2018-06-05 | 西安石油大学 | For simulating the high parameter experimental system and test method of shale gas reservoir carbon dioxide dry method pressure break fluid structurecoupling |
-
2015
- 2015-07-01 CN CN201520466432.1U patent/CN204789227U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914012A (en) * | 2015-07-01 | 2015-09-16 | 中国华能集团清洁能源技术研究院有限公司 | Carbon dioxide no-water fracturing fluid filtration characteristics test system and test method |
| CN108120819A (en) * | 2017-12-14 | 2018-06-05 | 西安石油大学 | For simulating the high parameter experimental system and test method of shale gas reservoir carbon dioxide dry method pressure break fluid structurecoupling |
| CN108120819B (en) * | 2017-12-14 | 2020-07-31 | 西安石油大学 | High-parameter experiment system and test method for simulating shale gas reservoir carbon dioxide dry fracturing fluid-solid coupling |
| CN108088768A (en) * | 2017-12-28 | 2018-05-29 | 中国华能集团公司 | A kind of thin-tube type rheometer experimental system and experimental method |
| CN108088768B (en) * | 2017-12-28 | 2023-05-30 | 中国华能集团公司 | Experiment system and experiment method for tubule rheometer |
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