CN106959265A - It is a kind of to simulate the experimental provision that acid etching influences on carbonate reservoir fracture condudtiviy - Google Patents
It is a kind of to simulate the experimental provision that acid etching influences on carbonate reservoir fracture condudtiviy Download PDFInfo
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- CN106959265A CN106959265A CN201710300671.3A CN201710300671A CN106959265A CN 106959265 A CN106959265 A CN 106959265A CN 201710300671 A CN201710300671 A CN 201710300671A CN 106959265 A CN106959265 A CN 106959265A
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- 239000002253 acid Substances 0.000 title claims abstract description 98
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 56
- 238000005530 etching Methods 0.000 title claims abstract description 34
- 239000012530 fluid Substances 0.000 claims abstract description 61
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005260 corrosion Methods 0.000 claims abstract description 17
- 238000004088 simulation Methods 0.000 claims abstract description 17
- 230000007797 corrosion Effects 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000002474 experimental method Methods 0.000 claims description 17
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000013461 design Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000005496 eutectics Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 238000011160 research Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000005588 carbonic acid salt group Chemical group 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Ecology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Environmental Sciences (AREA)
- Dispersion Chemistry (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention relates to the experimental provision that a kind of simulation acid etching of Geological Engineering technical field influences on carbonate reservoir fracture condudtiviy, it is main by acid fluid system basin, corrosion protection pump, fluid flowmeter, ball valve A, acid fluid system entrance, air compressor machine, ball valve B, pressure gauge, gas access, pressure sensor, computer monitoring system A, casing, piston ring, piston, high-speed camera, the lateral opening handle of casing, carbonate sillar, anti-corrosive steel tube with holes, aperture, funnel, acid fluid system graduated cylinder, ball valve C, timer, computer monitoring system B, parameters of the guiding vane display and water conservancy diversion tester composition.The present invention is easily operated, the water conservancy diversion situation of different acid-etched fractures can be visually detected by water conservancy diversion test system, by the way that strata pressure under actual condition can be simulated to containment housing supercharging, by transparent casing can clear view to experimental phenomena, the process that acid etching influences on carbonate fracture flow conductivity can be simulated well.
Description
Technical field
The present invention relates to a kind of simulation acid etching of Geological Engineering technical field to carbonate reservoir fracture condudtiviy shadow
Loud experimental provision.
Background technology
Exploited in China Tarim Basin during oil, the most of stratum in its stratum are carbonate formation.Acid fracturing
Be make carbonate reservoir volume increase and stable yields important means, and fracture condudtiviy be acid fracturing success or not it is important because
Element；Acid corrosion fracture is embodied in the flow conductivity of the non-homogeneous groove of acid solution fracture wall etching, due in acid etching
During there is very strong randomness, so the fracture pattern caused is also varied.At present both at home and abroad to acid fracturing with
Research and different acid fluid systems afterwards in terms of fracture condudtiviy and influence factor is quantitative to carbonate fracture flow conductivity shadow
Research in terms of loud visualized experiment is simultaneously few.Therefore, for different acid fluid systems, different acid contents to carbonate fracture
The influence of flow conductivity is necessary to carry out visual research；Carbonate reservoir is split if invention one kind can effectively simulate acid etching
The experimental provision of flow conductivity influence is stitched, it can simulate flow conductivity progress visualization of the acid etching to carbonate reservoir crack and grind
Study carefully, observe same acid fluid system and change over time the situation of change and different acid solutions of flow conductivity in same time internal fissure water conservancy diversion
The situation of change of ability, this will be significant to live actual volume increase and stable yields engineering.
The content of the invention
The present invention seeks to：The experiment dress that acid etching influences on carbonate reservoir fracture condudtiviy is simulated there is provided a kind of
Put.
The technical solution adopted in the present invention is：
The present invention is the experimental provision that a kind of simulation acid etching influences on carbonate reservoir fracture condudtiviy, mainly by acid
Liquid system basin, corrosion protection pump, fluid flowmeter, ball valve A, acid fluid system entrance, air compressor machine, ball valve B, pressure gauge, gas access,
Pressure sensor, computer monitoring system A, casing, piston ring, piston, high-speed camera, the lateral opening handle of casing, carbonic acid
Salt sillar, anti-corrosive steel tube with holes, aperture, funnel, acid fluid system graduated cylinder, ball valve C, timer, computer monitoring system B, water conservancy diversion
Factor display and water conservancy diversion tester composition.Acid fluid system basin constitutes acid solution with acid fluid system graduated cylinder, ball valve C and funnel successively
System configurations system, air compressor machine is connected with ball valve B, pressure gauge and gas access successively, corrosion protection pump successively with fluid flowmeter, ball
Valve A, acid fluid system entrance are connected, and computer monitoring system A is connected with two pressure sensors, computer monitoring system B with
Parameters of the guiding vane display is connected with water conservancy diversion tester, collectively constitutes flow conductivity detecting and analysing system.Ball valve A, ball valve B and ball
Valve C is 3 identical ball valves, and piston is made using eutectic silicon aluminum alloy material, good airproof performance.Casing is using transparent high-strength
Degree high-voltage-resistant anti-corrosion PC materials are made, pressure-bearing 10Mpa；Casing uses rectangular design, and its length, width and height size is：1.5m×
1.5m × 1.2m, a pressure sensor is respectively equipped with the casing upper right corner and piston right part；The carbonate that is of five storeys is set in casing altogether
Sillar, every piece of thickness 0.1m, every layer is spliced by 4 block size identical rectangle carbonate sillars, and its specification is：0.75m×
0.75m × 0.1, and it is provided with middle part a diameter of 0.1m and anti-corrosive steel tube external diameter identical macropore with holes.On anti-corrosive steel tube with holes
4 row's apertures are provided with, hole diameter 0.01m often arranges 4 and is symmetric；Small hole center and two pieces of carbonate sillar intersections
On the same line, often the spacing of row's aperture height is 0.1m.The casing left and right sides is respectively arranged with high 0.7m's and high 0.4m
The lateral opening handle of casing, it is convenient that directly the carbonate sillar after acid etching is taken out and given by computer monitoring respectively from both sides
The flow conductivity detecting and analysing system that system B, parameters of the guiding vane display and water conservancy diversion tester are collectively constituted is to the carbonic acid after experiment
The change of salt sillar flow conductivity is analyzed.Acid fluid system basin is connected jointly with acid fluid system graduated cylinder, ball valve C and funnel successively
Acid fluid system configuration system is constituted, it can quantify the acid fluid system allocated required for various acid etching experiments.By computer monitoring
System B, parameters of the guiding vane display and water conservancy diversion tester collectively constitute flow conductivity detecting and analysing system to the carbonic acid before and after acid etching
The Reservoir Fracture flow conductivity of salt sillar simulation is tested respectively, draws different acid fluid systems and acid etching under different action times
The difference of effect.In whole experiment process, the identical acid fluid system under being controlled by timer quantitatively is due to action time
The different influence to carbonate reservoir fracture condudtiviy.The gas that air compressor machine is provided makes upper piston area generation pressure carry out mould
Intend carbonate reservoir under strata pressure under actual condition, carbonate sillar simulation actual condition, 5 carbonate sillars are passed through
Self gravitation and air compressor machine compressed air simulated formation pressure make the gap that it is brought into close contact between contact, sillar each other
Simulate carbonate reservoir crack under actual condition.
Advantages of the present invention：Whole experiment process is simple to operate, can visual inspection by flow conductivity detecting and analysing system
Go out the water conservancy diversion situation of different acid-etched fractures, the acid solution body required for system can quantitatively allot acid etching is configured by acid fluid system
System, the pressure change in casing can be grasped in real time, carbonate reservoir fracture condudtiviy can be simulated well by different acid solutions
The situation of change of the different fracture condudtiviies of situation of change and acid corrosion action time under system acid corrosion action.
Brief description of the drawings
Fig. 1 is that a kind of simulation acid etching of the present invention shows the experimental provision structure that carbonate reservoir fracture condudtiviy influences
It is intended to.
Fig. 2 is the structural representation of anti-corrosive steel tube with holes in Fig. 1.
Fig. 3 is the carbonate reservoir top view of four pieces of carbonate sillar compositions in Fig. 1.
Fig. 4 is that the flow conductivity collectively constituted by computer monitoring system B, parameters of the guiding vane display and water conservancy diversion tester is surveyed
Try analysis system schematic diagram
In figure：1. acid fluid system basin, 2. corrosion protection pumps, 3. fluid flowmeters, 4. ball valve A, 5. acid fluid system entrances, 6. is empty
Press, 7. ball valve B, 8. pressure gauges, 9. gas accesses, 10. pressure sensors, 11. computer monitoring systems, 12. casings, 13.
Piston ring, 14. pistons, 15. high-speed cameras, the lateral opening handle of 16 casings, 17 carbonate sillars, 18 anti-corrosive steel tubes with holes,
19 apertures, 20 funnels, 21 acid fluid system graduated cylinders, 22 ball valve C, 23 timers, 24 computer monitoring system B, 25 parameters of the guiding vane show
Show device, 26 water conservancy diversion testers
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, the present invention is a kind of to simulate the experimental provision that acid etching influences on carbonate reservoir fracture condudtiviy,
It is main by acid fluid system basin 1, corrosion protection pump 2, fluid flowmeter 3, ball valve A4, acid fluid system entrance 5, air compressor machine 6, ball valve B7,
Pressure gauge 8, gas access 9, pressure sensor 10, computer monitoring system 11, casing 12, piston ring 13, piston 14, take the photograph at a high speed
The lateral opening handle 16 of camera 15, casing, carbonate sillar 17, anti-corrosive steel tube with holes 18, aperture 19, funnel 20, acid fluid system
26 groups of graduated cylinder 21, ball valve C 22, timer 23, computer monitoring system B 24, parameters of the guiding vane display 25 and water conservancy diversion tester
Into.Acid fluid system basin 1 configures system with acid fluid system graduated cylinder 21, ball valve C22 and funnel 20 composition acid fluid system successively, calculates
Machine monitoring system B24 is connected with parameters of the guiding vane display 25 and water conservancy diversion tester 26, collectively constitutes flow conductivity test analysis
System.Air compressor machine 6 is connected with ball valve B7, pressure gauge 8 and gas access 9 successively, corrosion protection pump 2 successively with fluid flowmeter 3, ball valve
A4, acid fluid system entrance 5 are connected, and computer monitoring system A11 is connected with two pressure sensors 10.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, physical simulation process is：The lateral opening handle 16 of casing is first turned on, will be tight
The carbonate sillar 17 of closely connected conjunction is respectively put into casing 12 from the left and right sides, is closed the lateral handle of casing 12, is entered casing
Sealing state；Air compressor machine 6 is opened, gas is sequentially passed through and enters the top of piston 14 after ball valve B7, pressure gauge 8, over time
Increase, the upper gas of piston 14 is more and more, and when the upper pressure of piston 14 is more than low pressure, piston is down moved.Work as calculating
Monitor that the low pressure of piston 14 mutually simultaneously closes off air compressor machine 6 with strata pressure under actual condition in machine monitoring system 11, simultaneously
Closing ball valve B7 makes the upper pressure of piston 14 be in stable state；By in different funnels 20 in acid fluid system configuration system
Acid solution is filled, is controlled with ball valve C22, quantitative in acid fluid system graduated cylinder 21, the final acid fluid system of configuration concentrates on acid solution body
In being basin 1；Corrosion protection pump 2 is opened, starts to give acid corrosion process timing while opening timer 23, acid fluid system is store from acid fluid system
Tank 1 flows out, and after corrosion protection pump 2 is pressurizeed, fluid flowmeter 3 is measured, enters casing 12, acid fluid system from acid fluid system entrance 5
Flow, finally flowed out from aperture 19 along anti-corrosive steel tube 18 with holes in casing, acid fluid system is along carbonate sillar 17 and carbon
Contact surface flows between the gap of hydrochlorate sillar 17, and acid fluid system carries out acid etching, a period of time to contact surface during flowing
Corrosion protection pump 2, air compressor machine 6, ball valve A, ball valve B and ball valve C are closed afterwards, are simultaneously closed off timer 23 and are recorded etching time, beat
Side unpack to opening handle 16, takes out carbonate rock each several part sillar 17, passes through the calculating of flow conductivity detecting and analysing system
Machine monitoring system B24, parameters of the guiding vane display 25 and water conservancy diversion tester 26 carry out the water conservancy diversion in the gap of test analysis carbonate sillar 17
Ability.By the carbonate sillar 17 more renewed, species, consumption and the etching time for changing acid fluid system carry out repeatedly identical reality
Test, can drawing, carbonate fracture flow conductivity is influenceed as etching time is different, acid fluid system is different and its consumption is how many
Relation curve, i.e., whole simulation process terminates.Recorded in whole experiment process by high-speed camera 15, it tests knot
Fruit will be significant to live actual volume increase and stable yields with experimental phenomena.
Claims (8)
1. a kind of simulate the experimental provision that acid etching influences on carbonate reservoir fracture condudtiviy, mainly by acid fluid system basin
(1), corrosion protection pump (2), fluid flowmeter (3), ball valve A (4), acid fluid system entrance (5), air compressor machine (6), ball valve B (7), pressure
Table (8), gas access (9), pressure sensor (10), computer monitoring system A (11), casing (12), piston ring (13), piston
(14), high-speed camera (15), the lateral opening handle of casing (16), carbonate sillar (17), anti-corrosive steel tube with holes (18), aperture
(19), funnel (20), acid fluid system graduated cylinder (21), ball valve C (22), timer (23), computer monitoring system B (24), water conservancy diversion
Factor display (25) and water conservancy diversion tester (26) composition.It is characterized in that：Acid fluid system basin (1) successively with acid fluid system amount
Cylinder (21), ball valve C (22) and funnel (20) are connected, and are collectively constituted acid fluid system and are configured system, air compressor machine (6) successively with ball valve B
(7), pressure gauge (8) is connected with gas access (9), corrosion protection pump (2) successively with fluid flowmeter (3), ball valve A (4), acid fluid system
Entrance (5) is connected, and computer monitoring system A (11) is connected with two pressure sensors (10), computer monitoring system B (24)
It is connected successively with parameters of the guiding vane display (25) and water conservancy diversion tester (26), collectively constitutes flow conductivity detecting and analysing system.
2. the experiment dress that a kind of simulation acid etching according to claim 1 influences on carbonate reservoir fracture condudtiviy
Put, it is characterised in that：Ball valve A (4), ball valve B (7) and ball valve C (22) are 3 identical ball valves, and casing (12) uses transparent height
Intensity high-voltage-resistant anti-corrosion PC materials are made, pressure-bearing 10MPa, and piston (14) is using the making of eutectic silicon aluminum alloy material
Into good airproof performance.
3. the experiment dress that a kind of simulation acid etching according to claim 1 influences on carbonate reservoir fracture condudtiviy
Put, it is characterised in that：Casing (12) uses rectangular design, and its length, width and height size is：1.5m × 1.5m × 1.2m, in casing (12)
The upper right corner and piston (14) right part are respectively equipped with a pressure sensor；The carbonate sillar (16) that is of five storeys is set in casing (12) altogether,
Every piece of thickness 0.1m, every layer is spliced by 4 block size identical rectangle carbonate sillars (16), and its length and width high standard is：0.75m
× 0.75m × 0.1, and it is provided with middle part a diameter of 0.1m and anti-corrosive steel tube with holes (17) external diameter identical macropore.
4. the experiment dress that a kind of simulation acid etching according to claim 1 influences on carbonate reservoir fracture condudtiviy
Put, it is characterised in that：4 row's apertures (19) are provided with anti-corrosive steel tube (18) with holes, hole diameter 0.01m often arranges 4 and in symmetrical
Distribution；With two pieces of carbonate sillar (17) intersections on the same line, the spacing for often arranging aperture height is at aperture (19) center
0.1m。
5. the experiment dress that a kind of simulation acid etching according to claim 1 influences on carbonate reservoir fracture condudtiviy
Put, it is characterised in that：By the common group of computer monitoring system B (24), parameters of the guiding vane display (25) and water conservancy diversion tester (26)
The Reservoir Fracture flow conductivity of carbonate sillar (17) simulation before and after acid etching is divided into flow conductivity detecting and analysing system
Do not test, draw different acid fluid systems and under different action times acid etching effect difference.
6. the experiment dress that a kind of simulation acid etching according to claim 1 influences on carbonate reservoir fracture condudtiviy
Put, it is characterised in that：Acid fluid system basin (1) is connected altogether with acid fluid system graduated cylinder (21), ball valve C (22) and funnel (20) successively
With composition acid fluid system configuration system, it can quantify the acid fluid system allocated required for every acid etching experiment.
7. the experiment dress that a kind of simulation acid etching according to claim 1 influences on carbonate reservoir fracture condudtiviy
Put, it is characterised in that：Casing (12) left and right sides is respectively arranged with the lateral opening handle of high 0.7m and high 0.4m casing (16),
It is convenient directly respectively to take out the carbonate sillar (17) after acid etching from both sides, then with computer monitoring system B (24), water conservancy diversion
The flow conductivity detecting and analysing system that factor display (25) and water conservancy diversion tester (26) are collectively constituted is to the carbonate after experiment
The change of sillar (17) flow conductivity is analyzed.
8. the experiment dress that a kind of simulation acid etching according to claim 1 influences on carbonate reservoir fracture condudtiviy
Put, it is characterised in that：In whole experiment process, the identical acid fluid system under being controlled quantitatively by timer (23) is due to making
With the different influences to carbonate reservoir fracture condudtiviy of time.The gas that air compressor machine (6) is provided makes on piston (14)
Portion produces pressure to simulate carbonate reservoir under strata pressure under actual condition, carbonate sillar (17) simulation actual condition,
Make it close each other by self gravitation and air compressor machine compressed air simulated formation pressure 5 carbonate sillars (17)
Carbonate reservoir crack under backlash actual condition between laminating contact, sillar.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710300671.3A CN106959265A (en) | 2017-04-29 | 2017-04-29 | It is a kind of to simulate the experimental provision that acid etching influences on carbonate reservoir fracture condudtiviy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710300671.3A CN106959265A (en) | 2017-04-29 | 2017-04-29 | It is a kind of to simulate the experimental provision that acid etching influences on carbonate reservoir fracture condudtiviy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387498A (en) * | 2018-01-31 | 2018-08-10 | 中国石油天然气股份有限公司 | The determination method and apparatus of the end time of reservoir corrosion |
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| CN103768989A (en) * | 2014-01-29 | 2014-05-07 | 南京金焰锶业有限公司 | Dilute sulfuric acid automatic preparation device and method |
| CN105089657A (en) * | 2015-06-15 | 2015-11-25 | 中国石油天然气股份有限公司 | Physical simulation method and physical simulation experimental device for oil and gas charging of fracture-cave carbonate reservoir |
| CN206876548U (en) * | 2017-04-29 | 2018-01-12 | 西南石油大学 | A kind of experimental provision simulated acid etching and influenceed on carbonate reservoir fracture condudtiviy |
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2017
- 2017-04-29 CN CN201710300671.3A patent/CN106959265A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202092935U (en) * | 2011-06-09 | 2011-12-28 | 青岛石大石仪科技有限责任公司 | Core gripper capable of viewing core cracks |
| CN102587886A (en) * | 2012-03-20 | 2012-07-18 | 西南石油大学 | Testing device and testing method for flow conductivity of acid-eroded fractures |
| CN103234971A (en) * | 2013-04-23 | 2013-08-07 | 西南石油大学 | Acidic etching instrument and operation method thereof |
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| CN105089657A (en) * | 2015-06-15 | 2015-11-25 | 中国石油天然气股份有限公司 | Physical simulation method and physical simulation experimental device for oil and gas charging of fracture-cave carbonate reservoir |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108387498A (en) * | 2018-01-31 | 2018-08-10 | 中国石油天然气股份有限公司 | The determination method and apparatus of the end time of reservoir corrosion |
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