CN109113695A - A kind of Profile Control in Injection Well visual experimental apparatus and its experimental method - Google Patents
A kind of Profile Control in Injection Well visual experimental apparatus and its experimental method Download PDFInfo
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- CN109113695A CN109113695A CN201811169824.6A CN201811169824A CN109113695A CN 109113695 A CN109113695 A CN 109113695A CN 201811169824 A CN201811169824 A CN 201811169824A CN 109113695 A CN109113695 A CN 109113695A
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- 238000002474 experimental method Methods 0.000 title claims abstract description 32
- 238000002347 injection Methods 0.000 title claims abstract description 29
- 239000007924 injection Substances 0.000 title claims abstract description 29
- 230000000007 visual effect Effects 0.000 title claims abstract description 24
- 239000011435 rock Substances 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000006073 displacement reaction Methods 0.000 claims abstract description 33
- 239000000243 solution Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000004088 simulation Methods 0.000 claims abstract description 13
- 230000006641 stabilisation Effects 0.000 claims abstract description 12
- 238000011105 stabilization Methods 0.000 claims abstract description 12
- 238000004043 dyeing Methods 0.000 claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 4
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- 239000000178 monomer Substances 0.000 claims description 3
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- 229920005439 Perspex® Polymers 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000009795 derivation Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 claims 1
- 239000000975 dye Substances 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000011156 evaluation Methods 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- 238000002791 soaking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
A kind of Profile Control in Injection Well visual experimental apparatus and its experimental method, dyeing profile control solution in profile control liquid pool enters pump by exits and entrances valve II, water inlet (liquid) pipeline, pump inlet valve, pressurization poststaining profile control solution enters fluid voltage stabilization apparatus through pump discharge valve, it dyes profile control solution and core receptacle is entered by the inlet tube of rock core simulator through automatic control system solenoid valve, high pressure line, to water flooding displacement in simulation core, by camera record displacement process, water flooding is discharged by drain tube valve；Show that flow, pressure gauge show pressure by electromagnetic flowmeter in displacement process；The instantaneous switch of solenoid valve in displacement process, record and integrated flow and pressure are monitored by computer software control, enrolls experimental data in real time, and timing controlled camera takes pictures to rock core simulator, and is shown by display.The present invention can show that profile control solution profile control in rock core promotes situation intuitively, comprehensively, and the profile control parameter of optimal operational discharge capacity is obtained by testing.
Description
Technical field
It is specifically that a kind of Profile Control in Injection Well visualization is real the present invention relates to water injection well in oil fields water plugging and profile controlling technology
Experiment device and its experimental method.
Background technique
Currently, water injection well water plugging and profile controlling is that the important process of raising oil-field flooding recovery ratio is arranged in oilfield development process
One of apply, mainly by blocking high permeability zone, high permeability zone water absorption is reduced, or when improving water injection pressure, in increase
The water absorption of less permeable layer, to improve swept volume.It is higher for displacement requirements during water plugging and profile controlling, if discharge capacity mistake
Big profile control agent can be squeezed into hypotonic position and cause oil layer pollution, and the too small then profile control agent of discharge capacity can be flowed along high permeability zone, be risen not
To the purpose of blocking high permeability zone.Increase the construction time and Amount of profile control agent causes cost to rise violently.Therefore, the suitable construction of selection
Discharge capacity constructs for profile control significant.It is in the method that laboratory experiment optimizes for the optimal way of construction parameter at present
It is main.Retrieve a kind of water shutoff agent plugging and profile con-trol visual evaluating method (application publication number: CN 107975366 in porous media
A calls documents 1 in the following text) and in laboratory to heterogeneous reservoir carry out simulation profile control method and apparatus (application publication number:
104833618 A of CN, calls documents 2 in the following text) two open source literatures, the technical solution that documents 1 propose belongs to microcosmic mechanism
Research field, using the seal-off effect of visualization micromodel and image color difference processing technique characterization water shutoff agent in the venturi of rock core hole
Can, documents 2 are to simulate non-homogeneous pay by core model, and the injection liquid before and after each layer profile control is calculated by experimental data
The amount of scurrying into obtains profile control effect by the front and back amount of scurrying into data comparison.By being tested in profile control to above-mentioned two document analysis
In journey can not intuitively, comprehensively reflect profile control effect, while can not obtain optimal operational discharge capacity by experiment
Profile control parameter.
Summary of the invention
The object of the present invention is to provide a kind of Profile Control in Injection Well visual experimental apparatus and its experimental method, overcome it is above-mentioned
There is defect existing for technology.
The technical scheme is that be accomplished by the following way:
The present invention includes: displacement system, rock core simulator, metering section, automatic control system, bracket；It is characterized by: institute
The profile control liquid pool for stating displacement system is provided with dyeing profile control solution and passes sequentially through exits and entrances valve II, water inlet (liquid) pipeline, pump inlet
Valve enters pump, and the dyeing profile control solution after pressurization enters fluid voltage stabilization apparatus through pump discharge valve, the dyeing profile control solution after pressure stabilizing
Solenoid valve, high pressure line through automatic control system enter core receptacle by the inlet tube of rock core simulator, to simulation rock
Intracardiac water flooding carries out displacement, photographs to record displacement process by the camera of water flooding automatic control system, water flooding is logical
Cross drain pipe discharge；Show that flow, pressure gauge show pressure by the electromagnetic flowmeter of metering section in displacement process；By certainly
Solenoid valve opens and closes in the computer software control monitoring displacement process of autocontrol system, enrolls experimental data in real time, and according to one
Fixed time interval controls camera takes pictures to rock core simulator.
The profile control liquid pool of displacement system in a kind of above-mentioned Profile Control in Injection Well visual experimental apparatus passes through stratum water pipeline
It supplies water through penstock, four-way, exits and entrances valve II, while being equipped with stratum pond, supplied water by four-way, exits and entrances valve I.
Fluid voltage stabilization apparatus lower part in a kind of above-mentioned Profile Control in Injection Well visual experimental apparatus is equipped with fluid level controller.
The computer of automatic control system in a kind of above-mentioned Profile Control in Injection Well visual experimental apparatus passes through signal wire point
It is not connect with electromagnetic flowmeter, pressure gauge, camera, solenoid valve.
Rock core simulator in a kind of above-mentioned Profile Control in Injection Well visual experimental apparatus is equipped with 2-4 grades, triangular support
Left end is connect with rotation assembly, right end and rock core simulator connect, and rock core simulator is mounted on bracket by rotation assembly
Middle part, rock core simulator integrally can be rotating around 180 ° of ranges rotations of bracket around bracket 180 ° of ranges rotation, monomer.
Frame bottom in a kind of above-mentioned Profile Control in Injection Well visual experimental apparatus is equipped with disc-shaped base.
The core receptacle of rock core simulator in a kind of above-mentioned Profile Control in Injection Well visual experimental apparatus is transparent organic
Rectangular box made of glass material, it is interior to be equipped with simulation core, it is equipped with inlet tube on the right end top of rock core simulator, it is left
It holds lower part to be equipped with drain pipe, valve is housed on drain pipe.
A kind of experimental method of Profile Control in Injection Well visual experimental apparatus:
Step 1: preparing rock core, according to site operation layer position physical property situation, simulation core is made using back-up sand method, is placed in rock
In heart container, 2-4 grades of rock core simulator are made；
Step 2: connecting experimental provision, open exits and entrances valve I, pump discharge valve, pump inlet valve, starting is pumped into stratum
Water, check device seal situation, while complete wetting rock core；
Step 3: by computer, setting the experiment time started, set pumpage and camera photo opporunity interval, set
Good data recording mode；
Step 4: opening exits and entrances valve II, close exits and entrances valve I, experiment starts, and computer starts pump automatically, is pumped into and has
The profile control solution of coloring agent, computer automatically record each leakage fluid dram flow of fluid voltage stabilization apparatus and pressure data, while camera
Core receptacle situation is photographed to record according to certain time interval；
Step 5: experiment terminates, and reduces to a certain extent to liquid level in fluid voltage stabilization apparatus, is automatically closed by fluid level controller
Pump, experiment stop；
Step 6: resetting discharge capacity, tested again according to step 1-5, measure multi-group data；
Step 7: choosing most suitable discharge capacity by checking profile control solution displacement track in core receptacle according to experimental data, convert
Live operational discharge capacity data out.
Step 8: as follows according to experimental data water injection well water plugging and profile controlling operational discharge capacity derivation process:
Field profile control dosage are as follows: Q=∫ π R2HdH, Q are profile control volume, unit m3, H is core intersection, unit m,
Test Amount of profile control agent are as follows: q=∫ abhdh, q are experiment profile control volume, and unit ml, h are that experiment rock core is thick
Degree, unit cm；
In the formula shown in, in conjunction with field condition, it can conclude and derive following relationship:
v1/v2=dH/dh further obtains following relationship,
v1= dH/dh ·v2, wherein
v1For live actual displacement, unit m3/h；
H is core intersection, unit m；
H is rock core thickness, unit cm；
V2To test discharge capacity, unit ml/min；
By deriving, v1=0.06·v2,
That is, conversion coefficient is 0.06.
The beneficial effects of the present invention are: in profile control experimentation, due to core receptacle multi-angle visible, can it is intuitive,
The comprehensive profile control for showing profile control solution in rock core promotes situation, periodically takes pictures under area of computer aided, can overall process check
Profile control solution promotes track, is conducive to scientific accurately evaluation.The control of experimentation appliance computer, it is efficiently convenient, occupy personnel
Few, multiplicating test work load is small, improves experimental accuracy, reliability, can obtain optimal operational discharge capacity by experiment
Profile control parameter.
Fig. 1-structure of the invention functional block diagram
Fig. 2-axis side structure schematic diagram of the present invention
Fig. 3-is that instantaneous longitudinal profile promotes track schematic diagram
Fig. 4-is that instantaneous plan cross-sectional promotes track schematic diagram
In figure, 1. displacement systems, 1-1. pump discharge valve, 1-2. pump inlet valve, 1-3. pump, 1-4. water inlet (liquid) pipeline, 1-
5. fluid voltage stabilization apparatus, 1-6. fluid level controller, 1-7. high pressure line, the stratum 1-8. pond, 1-9. exits and entrances valve I, 1-10.
Stratum water pipeline, 1-11. penstock, 1-12. exits and entrances valve II, 1-13. profile control liquid pool .1-14. four-way；2. rock core simulation dress
It sets, 2-1 core receptacle, 2-2. simulation core, 2-3. inlet tube, 2-4. drain pipe；3. metering section, 3-1. electromagnetic flowmeter,
3-2. pressure gauge；4. automatic control system, 4-1. computer, 4-2. signal wire, 4-3. camera, 4-4. solenoid valve, 4-5. are aobvious
Show device；5. bracket, 5-1. rotation assembly, 5-2. support, 5-3. pedestal.
Specific embodiment
Further to disclose technical solution of the present invention, elaborate with reference to the accompanying drawing:
As shown in Figure 1 and Figure 2, a kind of Profile Control in Injection Well visual experimental apparatus is by displacement system 1, rock core simulator 2, metering
Part 3, automatic control system 4, bracket 5 form；It is characterized by: the dyeing in the profile control liquid pool 1-13 of the displacement system 1
Profile control solution enters pump 1-3(range of flow by II 1-12 of exits and entrances valve, water inlet (liquid) pipeline 1-4, pump inlet valve 1-2
0.01-1200ml/min), the dyeing profile control solution after pressurization enters fluid voltage stabilization apparatus 1-5 through pump discharge valve 1-1, after pressure stabilizing
Solenoid valve 4-4, high pressure line 1-7 of the dyeing profile control solution through automatic control system 4 pass through the inlet tube 2- of rock core simulator 2
2 enter core receptacle 2-1, carry out displacement to water flooding in simulation core 2-2, are remembered by the camera 4-3 of automatic control system 4
Displacement process is recorded, water flooding is discharged by drain pipe 2-3；It is shown in displacement process by the electromagnetic flowmeter 3-1 of metering section 3
Flow, pressure gauge 3-2 show pressure；Electromagnetism in displacement process is monitored by the computer 4-1 software control of automatic control system 4
The switch of valve 4-4 records instantaneous and integrated flow and pressure, enrolls experimental data in real time, and timing controlled camera 4-3 is to rock
Heart simulator 2 carries out high definition and takes pictures, and is shown by display 4-5.
The core receptacle 2-1 of the rock core simulator 2 is rectangular box made of clear perspex material, size
To be equipped with simulation core 2-2 in 50cm × 40cm × 8cm, Φ 20mm inlet tube is equipped on the right end top of rock core simulator 2
2-3, left end top and the bottom are equipped with Φ 20mm drain pipe 2-4, and drain pipe is equipped with the valve of DN19.
The rock core simulator 2 is equipped with 2-4 grade, the left end triangular support 5-2 connect with rotation assembly 5-1, right end and
Rock core simulator 2 connects, and rock core simulator 2 is mounted on the middle part of bracket 5 by rotation assembly 5-1, in rotation assembly 5-1
If 30215 ball bearings, internal diameter 75mm, rock core simulator 2 is whole can be around 5 180 ° of ranges rotations of bracket, and monomer can be with
Rotating around 5 180 ° of range rotations of bracket.The bracket 5 is high 2.0m, Φ 80mm steel pipe, and bottom is equipped with disc-shaped base 5-3.
A kind of experimental method of Profile Control in Injection Well visual experimental apparatus, for being tested before GD1-3-26 well profile control, in detail
Thin experimental procedure is as follows:
1. preparing rock core, according to site operation layer position physical property situation, rock core is made using back-up sand method, feelings are layered according to oil reservoir
Condition, the rock core for making 4 different permeabilities are placed in core receptacle, and due to being to carry out experiment test, made rock core is
Uniformly penetrating rate, at the scene in application, can according to need production rhythmic nature rock core.
Core permeability is as shown below:
Serial number is averaged gas permeability (md)
1 912
2 1034
3 1282
4 1517
2. soaking rock core, experimental provision being connected, automatic control program is not started, manual turn on pump to maximum pump discharge is pumped into clear water,
Until the outflow clear water of all core receptacle drain pipe uniformly continuous, while the sealing situation of each tie point of check device, inspection
After the completion of looking into, drain tube valve is closed in termination of pumping.
3. starting to test, it gets out the profile control agent at scene first, has configured solution according to site requirement, and instill dyeing
Agent stirs evenly.Then pumpage 1100ml/min is set on computers, and setting is taken pictures once for every 1 minute, turn-on data
Logging mode opens drain tube valve.
4. experimentation describes, computer starts pump automatically, is pumped into the profile control solution with coloring agent, and computer automatically records
The each leakage fluid dram flow of fluid voltage stabilization apparatus and pressure data, while camera is photographed to record according to 1 minute 1 time time interval
Core receptacle situation is reduced to setting position to liquid level in fluid voltage stabilization apparatus, and pump is automatically closed in computer, and experiment stops.
5. the numerical value of the certain intervals such as discharge capacity 900ml/min, 700ml/min is reset, one discharge capacity of every setting, according to
Step 2-4, which is re-executed, to be tested, and multi-group data is measured.
6., by checking profile control solution displacement track in core receptacle, choosing most suitable discharge capacity according to experimental data, converting
Live operational discharge capacity data out.
The selection of the experimental method of the Profile Control in Injection Well visual experimental apparatus, optimum capacity is needed according to profile control solution
Running track judges that selection principle is as follows:
1. in single core receptacle, longitudinal profile line promotes in parallel, there is no advancing by leaps and bounds, or only close to 1/4 distance of drain pipe
It is interior to advance by leaps and bounds；
2. more than in a core receptacle, profile control solution is not entered into the small core receptacle of permeability.
For example, when discharge capacity is 300ml/min, passing through the observation of plane and longitudinal profile, profile control agent according to experimental result
It is all introduced into high permeability zone, in less permeable layer almost without profile control agent entrance, while close at rock core length 2/3, is started
There is profile control solution to enter less permeable layer, illustrates that effect is best under this discharge capacity.
Field profile control discharge capacity account is as follows:
Field profile control dosage are as follows: Q=∫ π R2HdH, Q are profile control volume, m3, H is core intersection, m,
Test Amount of profile control agent are as follows: q=∫ abhdh, q are experiment profile control volume, and ml, h are experiment rock core thickness；
In the formula shown in, in conjunction with field condition, it can conclude and derive following relationship:
v1/v2=dH/dh further obtains following relationship,
v1= dH/dh .v2
Wherein:
v1For live actual displacement, unit m3/h；
H is core intersection, unit m；
H is rock core thickness, unit cm；
V2To test discharge capacity, unit ml/min
Measurement unit involved in formula is calculated according to formula, then,
v1=1÷1/1000×1/1000000÷1/60×v2,
That is v1=0.06·v2
Therefore, when experiment discharge capacity is 300ml/min, being scaled live discharge capacity is 0.06 × 300=18m3/h。
The foregoing is merely presently preferred embodiments of the present invention, non-to limit the scope of the patents of the invention, other people use
The equivalence changes of patent spirit of the invention, should belong to the scope of the patents of the invention.
Claims (9)
1. a kind of Profile Control in Injection Well visual experimental apparatus, comprising: displacement system (1), rock core simulator (2), metering section
(3), automatic control system (4), bracket (5)；It is characterized by: the profile control liquid pool (1-13) of the displacement system (1) is provided with
Dyeing profile control solution passes sequentially through exits and entrances valve II (1-12), water inlet (liquid) pipeline (1-4), pump inlet valve (1-2) entrance pump
(1-3), the dyeing profile control solution after pressurization enter fluid voltage stabilization apparatus (1-5) through pump discharge valve (1-1), the dyeing tune after pressure stabilizing
Cut open the inlet tube that solenoid valve (4-4), high pressure line (1-7) of the liquid through automatic control system (4) pass through rock core simulator (2)
(2-3) enters core receptacle (2-1), carries out displacement to the water flooding in simulation core (2-2), automatically controls system by water flooding
The camera (4-3) of system (4) photographs to record displacement process, and water flooding is discharged by drain pipe (2-4)；Pass through meter in displacement process
The electromagnetic flowmeter (3-1) of amount part (3) shows that flow, pressure gauge (3-2) show pressure；Pass through automatic control system (4)
Solenoid valve (4-4) opens and closes in computer (4-1) software control monitoring displacement process, enrolls experimental data in real time, and according to certain
Time interval controls camera (4-3) take pictures to rock core simulator (2).
2. a kind of Profile Control in Injection Well visual experimental apparatus according to claim 1, it is characterised in that: the displacement system
(1) profile control liquid pool (1-13) is by stratum water pipeline (1-10) through penstock (1-11), four-way (1-14), exits and entrances valve II
(1-12) supplies water, while being equipped with stratum pond (1-8), is supplied water by four-way (1-14), exits and entrances valve I (1-9).
3. a kind of Profile Control in Injection Well visual experimental apparatus according to claim 1, it is characterised in that: the fluid pressure stabilizing
The device lower part (1-5) is equipped with fluid level controller (1-6).
4. a kind of Profile Control in Injection Well visual experimental apparatus according to claim 1, it is characterised in that: the rock core simulation
Device (2) is equipped with 2-4 grades, and the triangular support left end (5-2) connect with rotation assembly (5-1), right end and rock core simulator (2)
Connection, rock core simulator (2) are mounted on the middle part of bracket (5) by rotation assembly (5-1), and rock core simulator (2) is whole
It can be rotated rotating around (5) 180 ° of ranges of bracket around (5) 180 ° of range rotations of bracket, monomer.
5. a kind of Profile Control in Injection Well visual experimental apparatus according to claim 1, it is characterised in that: the bracket (5)
Bottom is equipped with disc-shaped base (5-3).
6. a kind of Profile Control in Injection Well visual experimental apparatus according to claim 1 or 4, it is characterised in that: the rock core
The core receptacle (2-1) of simulator (2) is rectangular box made of clear perspex material, interior to be equipped with simulation core
(2-2) is equipped with inlet tube (2-3) on the right end top of rock core simulator (2), and left end lower part is equipped with drain pipe (2-4), drain
It manages and valve is housed on (2-4).
7. a kind of experimental method of Profile Control in Injection Well visual experimental apparatus:
Step 1. prepares rock core, according to site operation layer position physical property situation, makes simulation core (2-2) using back-up sand method, puts
It is placed in core receptacle (2-1), makes rock core simulator (2)；
Step 2. connects experimental provision, opens exits and entrances valve I (1-9), pump discharge valve (1-1), pump inlet valve (1-
2), starting pump (1-3) is pumped into water flooding, and check device seals situation, while complete wetting rock core；
Step 3. sets the experiment time started by computer (4-1), sets pump (1-3) discharge capacity and camera (4-3) is clapped
According to time interval, data recording mode is set；
Step 4. opens exits and entrances valve II (1-12), closes exits and entrances valve I (1-9), and experiment starts, and computer (4-1) is certainly
Dynamic starting pump (1-3), is pumped into the profile control solution with coloring agent, it is each that computer (4-1) automatically records fluid voltage stabilization apparatus (1-5)
Leakage fluid dram flow and pressure data, while camera (4-3) photographs to record core receptacle (2-1) feelings according to certain time interval
Condition；
Step 5. experiment terminates, and reduces to a certain extent to liquid level in fluid voltage stabilization apparatus (1-5), passes through fluid level controller (1-
6) it is automatically closed pump (1-3), experiment stops；
Step 6. resets discharge capacity, is tested again according to step (1)-(5), and multi-group data is measured；
Step 7. chooses most suitable row by checking core receptacle (2-1) interior profile control solution displacement track according to experimental data
Amount, and converse site operation displacement data.
8. the experimental method of Profile Control in Injection Well visual experimental apparatus according to claim 1 or claim 7, it is characterised in that: institute
The rock core simulator (2) stated is 2-4 grades.
9. the experimental method of Profile Control in Injection Well visual experimental apparatus according to claim 7, it is characterised in that: discharge capacity is changed
The derivation process of calculation is as follows:
Field profile control dosage are as follows: Q=∫ π R2HdH, Q are profile control volume, unit m3, H is core intersection, unit m,
Test Amount of profile control agent are as follows: q=∫ abhdh is experiment profile control volume, and unit ml, h are experiment rock core thickness；
In the formula shown in, in conjunction with field condition, it can conclude and derive following relationship:
v1/v2=dH/dh
Further obtain:
v1= dH/dh·v2
Wherein:
v1For live actual displacement, unit m3/h；
H is core intersection, unit m；
H is rock core thickness, unit cm；
V2To test discharge capacity, unit ml/min；
By deriving, v1=0.06·v2,
That is, conversion coefficient is 0.06.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060020A (en) * | 2020-08-06 | 2022-02-18 | 中国石油大学(北京) | Experimental device for simulating oil extraction seepage and preventing dry burning during well drilling plugging |
Citations (8)
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