CN108518205A - A kind of visual Simulation crosses the experimental provision and method of screen casing sand-preventing process - Google Patents
A kind of visual Simulation crosses the experimental provision and method of screen casing sand-preventing process Download PDFInfo
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- CN108518205A CN108518205A CN201810567009.9A CN201810567009A CN108518205A CN 108518205 A CN108518205 A CN 108518205A CN 201810567009 A CN201810567009 A CN 201810567009A CN 108518205 A CN108518205 A CN 108518205A
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- screen casing
- sand
- stainless steel
- steel metal
- metal cylinder
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- 230000008569 process Effects 0.000 title claims abstract description 30
- 238000004088 simulation Methods 0.000 title claims abstract description 19
- 230000000007 visual effect Effects 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 66
- 229910052751 metal Inorganic materials 0.000 claims abstract description 66
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- 239000010935 stainless steel Substances 0.000 claims abstract description 56
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- 238000010438 heat treatment Methods 0.000 claims abstract description 11
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- 238000011010 flushing procedure Methods 0.000 claims description 9
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- 230000000694 effects Effects 0.000 claims description 8
- 238000002474 experimental method Methods 0.000 claims description 3
- 239000008398 formation water Substances 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- 230000000704 physical effect Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 239000003513 alkali Substances 0.000 abstract description 2
- 230000001458 anti-acid effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 9
- 239000003129 oil well Substances 0.000 description 9
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The present invention discloses the experimental provision and method that a kind of visual Simulation crosses screen casing sand-preventing process, including integrated stainless steel metal cylinder, screen casing, cover board, bottom plate, fixing bracket, rotating mechanism；The cover board, bottom plate are connected to the upper and lower ends of integrated stainless steel metal cylinder, and the screen casing is vertically arranged in stainless steel metal cylinder, and upper end is connected in cover board, and lower end is connected in bottom plate；It is respectively equipped with top connection, lower contact in the screen casing upper and lower ends；The top connection is equipped with injection valve, and the lower contact is equipped with outflow valve；The bottom plate is equipped with heating collar, and the heating collar is located in integrated stainless steel metal cylinder；The integration stainless steel metal cylinder is equipped with eyelet, and the eyelet is equipped with eyelet valve；The integration stainless steel metal cylinder is vertically installed at by rotating mechanism on fixing bracket.Structure of the invention integration, easy to operate, pressure-bearing, heatproof, anti acid alkali performance can be good.
Description
Technical field
It is drilled well sand control technique field the invention belongs to oil gas field more particularly to a kind of visual Simulation crosses screen sand control work
The experimental provision and method of skill.
Background technology
Sand production is one of FAQs in loose sand oil accumulation recovery process, it refers to due to oil mining and operation
It causes the strata structure of pre-bore to destroy etc. various composite factors, causes the reservoir sand of partial exfoliation with reservoir fluid one
It rises and flows into pit shaft, to normally produce the process or phenomenon for causing a series of adverse effects to oil well.The reason of sand production is
It is various, it can be analyzed substantially from the factor of geologic(al) factor and development scheme.Sand production geologic(al) factor has：(1)
The intensity of the rock cement of layer is too low, passes through washing away for fluid, it is easy to which there is a situation where shake out；(2) oil well production process
In, due to waterflooding extraction, recovered water while, carries sand particles, causes sand production；(3) strata pressure declines, and causes rock
Being crushed for stone cement, leads to sand production；(4) viscosity of crude oil is larger, and prop-carrying capacity is strong, and sand production can be more serious.
Development scheme cause sand production because being known as：(1) Completion measures are improper, cause sand production；(2) cementing quality is bad, draws
That plays oil stream alters slot, and the flow direction of high pressure oil air water changes, and causes sand production；(3) perforation orientation, shot density of oil well
Etc. changing, cause sand production；(4) oil extraction operation system is unreasonable, and producing pressure differential is excessive, is the pass for causing sand production
Key factor；(5) ineffective after implementing hydraulic fracturing or Acidizing Technology measure, cause the cement of blowhole pressed off or
Person is caused to shake out by acid liquid corrosion.
The harm of sand production is mainly manifested in three aspects：(1) sand buries payzone and causes the oil well underproduction or halt production；(2) high
The sand grains of speed causes ground and underground equipment to aggravate abrasion；(3) shaking out leads to formation depletion and caves in casing damage is caused to make oil
Well is scrapped.Therefore the oil well to shake out must take sand control measure.
Anti-sand method can substantially be divided into mechanical sand control, chemical sand control, coking sand control, composite sand prevention and other sand control sides
Method, wherein mechanical sand control are divided into as mechanical screen sand control and gravel filling sand prevention.Gravel filling sand prevention technology is domestic and international at present
One of most common sand-preventing process of loose sand oil accumulation, its technical principle are：Face goes out (in bore hole or casing) in wellbore
Flooding in Borehole tripping in metal welds wire-wrapped screen entirely, is then pumped into gravel slurry in screen casing and bore hole annulus, passes through multistage filtering screen
Barrier ensures that oil stream porous system along obturation is continuously risen to ground by screen casing, and reservoir sand is then controlled in
In stratum, it is ensured that the normal production of oil well.Gravel filling technological characteristics of construction include：(1) it is usually used in oil well initial sand control, work
Skill is complicated, and vehicle group is employed more；(2) there is some strength to oil reservoir structural requirement；(3) height is required to reservoir condition, be not suitable for
Fine powder Flooding in Borehole sand control.
Current all sand-preventing process construction operations are all cumbersome, program is complicated, at present using it is more be sand washing and sieve
Pipe completion composite sand prevention technique.But sand washing operation must take out all tubing strings (complex process) in well, and sand washing need to note sand grains
Enter anti-layer of sand (constructional difficulties).Some accidents may occur to reservoir note sand construction, take sand difficulty, note not into sand, shaft bottom sand
It blocks up, so it is most important to seek more economical effective anti-sand method.
The technical principle for crossing screen casing sand-preventing process be using it is non-dissolve each other, the phase transformation system F of non-mixed phase and non-phase transformation system N press
Open stratum and form the man-made fracture of certain geometric dimension, by chemical phase-change method by one of fluid in crack or two splitting
" chemical sand heap " supporting crack is formed in seam, to form the chemical phase-change material supporting crack of high flow conductivity, to reach
Improve well yield and sand control effect (being similar to pressure break back-up sand sand control technique).Crossing Screen Sand Control Technique need not inject to stratum
Sand body avoids and adds the control of sand process is improper to be likely to form a series of disadvantages such as sand plug, greatly reduces engineering construction risk
With personnel safety risk；Solid phase sand heap is undergone phase transition generation by phase change fluid under formation conditions, while supporting crack from
It is acted on to sand block, substantially increases fracture condudtiviy and oil well output；Non- phase change fluid, which mainly rises, to take up space to form flowing
The effect in channel, it is environmentally safe, it can directly the row of returning recycle；Construction operation program is reduced, difficulty of construction is reduced, is saved
Construction cost.
Invention content
The present invention mainly overcomes shortcoming in the prior art, proposes that a kind of visual Simulation crosses screen casing sand-preventing process
Experimental provision and method, the present invention can under different temperatures and pressure condition, simulate phase transformation system F and non-phase transformation system N
Flow distribution in stratum, support situation of the observation phase-change material in crack, detection are returned sand production rate in discharge fracturing fluid and are judged
Formation sand production situation at present can advanced optimize phase-change material sand controlling result by changing screen sand control liquid parameter.
The present invention solves the technical solution that above-mentioned technical problem is provided：A kind of visual Simulation crosses screen casing sand-preventing process
Experimental provision, including integrated stainless steel metal cylinder, screen casing, cover board, bottom plate, fixing bracket, rotating mechanism；
The cover board, bottom plate are connected to the upper and lower ends of integrated stainless steel metal cylinder, and the screen casing is set vertically
It sets in stainless steel metal cylinder, and upper end is connected in cover board, lower end is connected in bottom plate；
It is respectively equipped with top connection, lower contact in the screen casing upper and lower ends；The top connection is equipped with injection valve, described
Lower contact is equipped with outflow valve；
The bottom plate is equipped with heating collar, and the heating collar is located in integrated stainless steel metal cylinder；
The integration stainless steel metal cylinder is equipped with eyelet, and the eyelet is equipped with eyelet valve；
The integration stainless steel metal cylinder is vertically installed at by rotating mechanism on fixing bracket.
Further, the rotating mechanism includes rolling bearing, sleeve, shaft, pin for suppressing metal, described shaft one end is set
There are several radial through-hole, the other end to be fixed on integrated stainless steel metal cylinder, there is pin hole on the sleeve, it is described
Fixing bracket both sides are arranged with rolling bearing, and the sleeve is horizontally set on roller bearings, and described shaft one end passes through set
Cylinder is connected in rolling bearing, and the pin for suppressing metal is arranged in pin hole and radial through-hole.
Further, the shaft both ends are equipped with several radial through-hole, the integration stainless steel metal cylinder
Level is equipped with cylinder, and the connecting cylinder is equipped with vertical through-hole, and the shaft is connected by pin in cylinder.
Further, being additionally provided with glass window and handle on the integration stainless steel metal cylinder.
Further, between the glass window and integrated stainless steel metal cylinder, integrated stainless steel metal circle
Cylinder is all provided with between cover board, between integrated stainless steel metal cylinder and bottom plate, between screen casing and cover board, between screen casing and bottom plate
There is rubber seal.
Further, the hole intraocular is equipped with sieve.
Further, the number of the eyelet is 8, it is in high and low position different distributions.
Further, being additionally provided with image capture device, described image immediately ahead of the integration stainless steel metal cylinder
Collecting device can be high-pixel mobile phone, DV or other there is the electronic equipment taken pictures with recording function.
Further, screen casing supporting and mounting bracket is equipped on the cover board lower face, bottom plate upper surface, the screen casing branch
There are circular hole, the screen casing to be located in circular hole on support fixed frame.
A kind of visual Simulation crosses the experimental method of screen casing sand-preventing process, includes the following steps：
Step S10, stratum sand body, artificial gravel are added first in integrated stainless steel metal cylinder；
Step S20, eyelet valve and outflow valve are closed, injection valve is opened, injects simulated formation water, start heating
Digital displaying meter temperature value, simulated formation temperature is arranged in circle；
Step S30, eyelet valve is opened, is driven during flushing fluid simulated production from stratum to shaft bottom from eyelet valve is counter
Flowing tests sand production rate in injection valve one end；
Step S40, flushing fluid is injected by injecting valve after anti-drive, liquid enters stratum through screen casing, passes through stratum
It is flowed out from eyelet valve, establishes a forward circulation system, clean screen casing repeatedly；
Step S50, after screen casing cleans up, institute's perforation valve is closed, forms a closed system；In certain pressure
Under, by injecting valve displacement fracturing fluid U agent, stratum is pressed off, the man-made fracture of certain geometric dimension is formed；
Step S60, continue displacement and cross screen casing fracturing fluid system G agent, screen casing fracturing fluid system G was observed by glass window
Top is injected in the dynamic and static distribution of the dynamic stream of agent in the earth formation, and the support situation in crack after it is fully populated with stratum
For liquid, displacement fluid injection rate is the volume of suction line, and effect is that the G agent in pipeline is made to fully enter stratum, phase transformation system F agent
Chemistry, physical action occur at the formation temperature, is spherical shape phase-change material by liquid phase, realizes and the sand control for producing layer is made
With；
Step S70, noted termination of pumping after displacement fluid, close all valves, build the pressure 30min-200min；
Step S80, pressure release is driven during flushing fluid simulated production from eyelet valve is counter from stratum to the stream in shaft bottom again
It is dynamic, sand production rate is tested in injection valve one end, compared sand production rate before and after screen sand control.
The beneficial effects of the invention are as follows：(1) structure-integrated, easy to operate, pressure-bearing, heatproof, anti acid alkali performance can be good；(2)
It may be implemented under the conditions of Different Strata temperature, pressure, stratum sand body, well type, simulate under different parameters (different flowing velocities,
Mixed proportion, viscosity, salinity, interfacial tension etc.) flow distribution of phase transformation system F and non-phase transformation system N in the earth formation, observation
Phase transformation reaction process, the phase-change material support distribution situation of phase transformation system, and measure the sand production rate of fracturing fluid recovery (backflow), preferably phase
Become system parameter, optimizes the sand controlling result of phase-change material；(3) a plurality of pipeloop can carry out forward circulation and recycled back；
(4) dismounting is simple easy to clean.
Description of the drawings
Fig. 1 is the main structure diagram of the present invention；
Fig. 2 is the schematic diagram of the present invention；
Fig. 3 is the structural schematic diagram of cover board；
Fig. 4 is the schematic front view of shaft.
As shown in the figure：1- integration stainless steel metals cylinder, 2- screen casings, 3- cover boards, 4- bottom plates, 5- fixing brackets, 6- notes
Enter valve, 7- outflow valve, 8- heating collars, 9- eyelets valve, 10- sleeves, 11- shafts, 12- pins for suppressing metal, 13- connecting cylinders,
14- rubber seal, 15- sieves, 16- glass windows, 17- screen casings supporting and mounting bracket, 18- handles, the vertical through-holes of 19-.
Specific implementation mode
Further description is done to the present invention with reference to embodiment and attached drawing.
The present invention is hung down suitable for simulating the reservoirs such as the hypertonic sandstone reservoir in high hole, loose cementation sandstone reservoir, heavy crude reservoir
The sand control process of straight well, horizontal well and each gradient hole condition.Its principle is will to cross screen sand control liquid to inject ground by screen casing 2
Layer, crack, the flowing dynamic of observation phase transformation system F and non-phase transformation system N in the earth formation, phase transformation system F are sent out under formation conditions
Raw phase transformation reaction generates spherical shape phase-change material, and phase-change material supporting crack forms anti-layer of sand, realizes sand control effect, carries simultaneously
High fracture condudtiviy returns discharge fracturing fluid sand production rate by detection and optimizes phase-change material sand controlling result.
As shown in Figure 1, a kind of visual Simulation of the present invention crosses the experimental provision of screen casing sand-preventing process, including integration is not
Steel metal of becoming rusty cylinder 1, screen casing 2, cover board 3, bottom plate 4, fixing bracket 5, rotating mechanism；The cover board 3, bottom plate 4 are connected to
The upper and lower ends of integrated stainless steel metal cylinder 1, the screen casing 2 are vertically arranged in stainless steel metal cylinder 1, and upper end connects
It is connected in cover board 3, lower end is connected in bottom plate 4；It is respectively equipped with top connection, lower contact in 2 upper and lower ends of the screen casing；On described
Connector is equipped with injection valve 6, and top connection is connect by injecting connection with injection valve 6, and the lower contact is equipped with outflow valve
Door 7, lower contact are connect by flowing out pipeline with outflow valve 7；The bottom plate 4 is equipped with heating collar 8, and the heating collar 8 is located at
In integrated stainless steel metal cylinder 1；The integration stainless steel metal cylinder 1 is equipped with eyelet, and the eyelet is equipped with hole
Eye valve 9, eyelet valve 9 are equipped with pipeloop, and pipeloop can be separately connected injection valve 6, outflow valve 7, from
And form direct circulation and reacting cycle；The integration stainless steel metal cylinder 1 is vertically installed at fixing bracket 5 by rotating mechanism
On, the angle of integrated stainless steel metal cylinder 1 and screen casing 2 can be adjusted by rotating mechanism, can be simulated and be hung down according to actual conditions
The sand control process of straight well, horizontal well and each gradient hole condition.
Wherein integrated metallic cylinder 1 be by the high standard stainless steel processing and manufacturing with good corrosion resistance and
At；Screen casing 2 is by being fabricated with good anticorrosive, pressure-resistant, heat resistance high standard steel, and screen casing 2 carries hole
Ocular structure, the perforation size on integrated stainless steel metal cylinder 1 is more than the cell structure of screen casing 2, for establishing screen casing 2 and ground
Circulation passage between layer；There are one the circular hole of 2 size of screen casing, screen casing 2 is located at the center tool of the cover board 3 and bottom plate 4
The middle section of integrated metallic cylinder 1, the screen casing 2 and integrated metallic cylinder 1 are contour, and 2 upper and lower side of the screen casing is all provided with
There are outer, internal thread, 2 upper and lower side of the screen casing to be threadedly coupled respectively with cover board 3, bottom plate 4.
A kind of specific implementation mode of wherein rotating mechanism is：The rotating mechanism includes rolling bearing, sleeve 10, shaft
11, pin for suppressing metal 12,11 one end of the shaft are equipped with several radial through-hole, and the other end is fixed on integrated stainless steel metal circle
On cylinder 1, there are pin hole, 5 both sides of the fixing bracket to be arranged with rolling bearing on the sleeve 10, the sleeve 10 is horizontal
It is arranged on roller bearings, 11 one end of the shaft is connected to across sleeve 10 in rolling bearing, and the pin for suppressing metal 12 is arranged
In pin hole and radial through-hole.
The actual use process of the rotating mechanism is：Pin for suppressing metal 12 is extracted first, then rotating integratedization stainless steel gold
Belong to cylinder 1 so that shaft 11 rotates in rolling bearing, when integrated stainless steel metal cylinder 1 turns to required angle
When, one of shaft 11 radial through-hole is aligned with pin hole, to be inserted into pin for suppressing metal 12, it is made to fix integration not
Steel metal of becoming rusty cylinder 1 completes entire angle adjustment process.
Wherein dismantled for the ease of integrated stainless steel metal cylinder 1, preferred embodiment is, shaft 11 with it is integrated
Stainless steel metal cylinder 1 is detachably connected, and specific embodiment is that it is radially logical that 11 both ends of the shaft are equipped with several
Hole, the integration stainless steel metal cylinder 1 is horizontal to be equipped with cylinder 13, and the connecting cylinder 13 is equipped with vertical through-hole 19, described
Shaft 11 is connected by pin in cylinder 13, i.e., insertion pin, which plays, is fixedly connected, and extracts pin and split.
For the ease of observing and rotating, preferred embodiment is additionally provided on the integration stainless steel metal cylinder 1
The number of glass window 16 and handle 18, glass window 16 is four, and the number of handle 18 is 2, is to be distributed on one
On the outer surface for changing stainless steel metal cylinder 1, the glass window 16 is by the extraordinary tempered glass with good load performance
It is process, visualization is provided；The handle 18 is made using heat-insulating material, is used for rotating integratedization metallic cylinder 1, adjusts sieve
The differences in angle of pipe 2.
In order to improve sealing effect, preferred embodiment is the glass window 6 and integrated stainless steel metal cylinder
Between 1, between integrated stainless steel metal cylinder 1 and cover board 3, between integrated stainless steel metal cylinder 1 and bottom plate 4, screen casing 2
It is equipped with rubber seal 14 between cover board 3, between screen casing 2 and bottom plate 4, the rubber seal 14 is by fluorine-containing or polytetrafluoro
Ethylene rubber is processed into, and has certain thickness and toughness, can be had the swelling of anti-organic solvent under high-temperature and high-pressure conditions and be resisted
Soda acid performance.
Sieve 15 is equipped in the wherein described eyelet, mesh number is consistent with 2 mesh number of screen casing, and sieve 15 is replaceable.
For the ease of cycle, it is preferred that the number of the eyelet is 8, is in high and low position different distributions.
1 front of integration stainless steel metal cylinder is additionally provided with image capture device, and described image collecting device can
For high-pixel mobile phone, DV or other there is the electronic equipment taken pictures with recording function.
Its 2 length of screen casing is longer, therefore in order to improve the stability of screen casing 2, and preferred embodiment is the cover board 3
It is equipped with screen casing supporting and mounting bracket 17 on lower face, 4 upper surface of bottom plate, has circular hole in the screen casing supporting and mounting bracket 17, institute
It states screen casing 2 to be located in circular hole, such screen casing supporting and mounting bracket 17 can play a supporting role to screen casing 2.
A kind of visual Simulation crosses the experimental method of screen casing sand-preventing process, includes the following steps：
Step S10, stratum sand body, artificial gravel is added in integrated stainless steel metal cylinder 1 first；
Step S20, it closes eyelet valve 9 and flows out valve 7, open injection valve 6, inject simulated formation water, start and add
Digital displaying meter temperature value, simulated formation temperature is arranged in gas ket 8；
Step S30, open eyelet valve 9, from eyelet valve 9 instead drive flushing fluid simulated production during from stratum to shaft bottom
Flowing, test sand production rate in injection valve 6 one end；
Step S40, flushing fluid is injected by injecting valve 6 after anti-drive, liquid enters stratum through screen casing 2, passes through ground
Layer is flowed out from eyelet valve 9, establishes a forward circulation system, cleans screen casing 2 repeatedly；
Step S50, after screen casing 2 cleans up, institute's perforation valve 9 is closed, forms a closed system；In certain pressure
Under, by injecting 6 displacement fracturing fluid U agent of valve, stratum is pressed off, the man-made fracture of certain geometric dimension is formed；
Step S60, continue displacement and cross screen casing fracturing fluid system G agent, screen casing fracturing liquid was observed by glass window 16
It is the dynamic and static distribution of the dynamic stream of G agent in the earth formation, and the support situation in crack, is noted after it is fully populated with stratum
Enter displacement fluid, displacement fluid injection rate is the volume of suction line, and effect is that the G agent in pipeline is made to fully enter stratum, phase variant
It is that chemistry, physical action occur at the formation temperature for F agent, is spherical shape phase-change material by liquid phase, realizes to production layer
Sand control acts on；
Step S70, noted termination of pumping after displacement fluid, close all valves, the 30min-200min that builds the pressure (makes phase transformation system F give birth to
At solid phase particles laid in crack, prevent F agent from passing back into pit shaft)；
Step S80, pressure release, again from stratum to the stream in shaft bottom during eyelet valve 9 anti-drive flushing fluid simulated production
It is dynamic, sand production rate is tested in 6 one end of injection valve, compared sand production rate before and after 2 sand control of screen casing, hence it is evident that obtain and implemented screen sand control
Sand production rate greatly reduces afterwards, and it is effective to illustrate that the present apparatus simulated screen casing sand-preventing process.
The above is not intended to limit the present invention in any form, although the present invention is taken off by above-described embodiment
Show, however, it is not intended to limit the invention, any person skilled in the art, is not departing from technical solution of the present invention range
It is interior, when the technology contents using the disclosure above make a little equivalent embodiments changed or be modified to equivalent variations, as long as being not
Be detached from technical solution of the present invention content, according to the technical essence of the invention to made by above example it is any it is simple modification,
Equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (10)
1. a kind of visual Simulation crosses the experimental provision of screen casing sand-preventing process, which is characterized in that including integrated stainless steel metal
Cylinder (1), screen casing (2), cover board (3), bottom plate (4), fixing bracket (5), rotating mechanism；
The cover board (3), bottom plate (4) are connected to the upper and lower ends of integrated stainless steel metal cylinder (1), the screen casing
(2) it is vertically arranged in stainless steel metal cylinder (1), and upper end is connected in cover board (3), lower end is connected in bottom plate (4)；
It is respectively equipped with top connection, lower contact in screen casing (2) upper and lower ends；The top connection is equipped with injection valve (6), institute
It states lower contact and is equipped with outflow valve (7)；
The bottom plate (4) is equipped with heating collar (8), and the heating collar (8) is located in integrated stainless steel metal cylinder (1)；
The integration stainless steel metal cylinder (1) is equipped with eyelet, and the eyelet is equipped with eyelet valve (9)；
The integration stainless steel metal cylinder (1) is vertically installed at by rotating mechanism on fixing bracket (5).
2. a kind of visual Simulation according to claim 1 crosses the experimental provision of screen casing sand-preventing process, which is characterized in that institute
It includes rolling bearing, sleeve (10), shaft (11), pin for suppressing metal (12) to state rotating mechanism, and the shaft (11) is if one end is equipped with
Dry radial through-hole, the other end are fixed on integrated stainless steel metal cylinder (1), have pin hole on the sleeve (10),
Fixing bracket (5) both sides are arranged with rolling bearing, and the sleeve (10) is horizontally set on roller bearings, the shaft
(11) one end is connected to across sleeve (10) in rolling bearing, and the pin for suppressing metal (12) is arranged in pin hole and radial through-hole
It is interior.
3. a kind of visual Simulation according to claim 2 crosses the experimental provision of screen casing sand-preventing process, which is characterized in that institute
It states shaft (11) both ends and is equipped with several radial through-hole, the integration stainless steel metal cylinder (1) is horizontal to be equipped with cylinder
(13), the connecting cylinder (13) is equipped with vertical through-hole (19), and the shaft (11) is connected by pin in cylinder (13).
4. a kind of visual Simulation according to claim 1 crosses the experimental provision of screen casing sand-preventing process, which is characterized in that institute
It states and is additionally provided with glass window (16) and handle (18) on integrated stainless steel metal cylinder (1).
5. a kind of visual Simulation according to claim 4 crosses the experimental provision of screen casing sand-preventing process, which is characterized in that institute
State between glass window (6) and integrated stainless steel metal cylinder (1), integrated stainless steel metal cylinder (1) and cover board (3) it
Between, between integrated stainless steel metal cylinder (1) and bottom plate (4), between screen casing (2) and cover board (3), screen casing (2) and bottom plate (4)
Between be equipped with rubber seal (14).
6. a kind of visual Simulation according to claim 1 or 4 crosses the experimental provision of screen casing sand-preventing process, feature exists
In the hole intraocular is equipped with sieve (15).
7. a kind of visual Simulation according to claim 6 crosses the experimental provision of screen casing sand-preventing process, which is characterized in that institute
The number for stating eyelet is 8, is in high and low position different distributions.
8. a kind of visual Simulation according to claim 1 crosses the experimental provision of screen casing sand-preventing process, which is characterized in that institute
It states and is additionally provided with image capture device immediately ahead of integrated stainless steel metal cylinder (1), described image collecting device can be high pixel
Mobile phone, DV or other there is the electronic equipment taken pictures with recording function.
9. a kind of visual Simulation according to claim 1 crosses the experimental provision of screen casing sand-preventing process, which is characterized in that institute
It states cover board (3) lower face, be equipped with screen casing supporting and mounting bracket (17), the screen casing supporting and mounting bracket on bottom plate (4) upper surface
(17) circular hole, the screen casing (2) are located in circular hole on.
10. a kind of visual Simulation crosses the experimental method of screen casing sand-preventing process, which is characterized in that include the following steps：
Step S10, stratum sand body, artificial gravel is added in integrated stainless steel metal cylinder (1) first；
Step S20, eyelet valve (9) and outflow valve (7) are closed, injection valve (6) is opened, injects simulated formation water, is started
Digital displaying meter temperature value, simulated formation temperature is arranged in heating collar (8)；
Step S30, open eyelet valve (9), from eyelet valve (9) instead drive flushing fluid simulated production during from stratum to shaft bottom
Flowing, injection valve (6) one end test sand production rate；
Step S40, flushing fluid is injected by injecting valve (6) after anti-drive, liquid enters stratum through screen casing (2), passes through ground
Layer is flowed out from eyelet valve (9), establishes a forward circulation system, cleans screen casing (2) repeatedly；
Step S50, after screen casing (2) cleans up, institute's perforation valve (9) is closed, forms a closed system；In certain pressure
Under, by injecting valve (6) displacement fracturing fluid U agent, stratum is pressed off, the man-made fracture of certain geometric dimension is formed；
Step S60, continue displacement and cross screen casing fracturing fluid system G agent, screen casing fracturing fluid system G was observed by glass window (16)
Top is injected in the dynamic and static distribution of the dynamic stream of agent in the earth formation, and the support situation in crack after it is fully populated with stratum
For liquid, displacement fluid injection rate is the volume of suction line, and effect is that the G agent in pipeline is made to fully enter stratum, phase transformation system F agent
Chemistry, physical action occur at the formation temperature, is spherical shape phase-change material by liquid phase, realizes and the sand control for producing layer is made
With；
Step S70, noted termination of pumping after displacement fluid, close all valves, build the pressure 30min-200min；
Step S80, pressure release, again from eyelet valve (9) instead drive flushing fluid simulated production during from stratum to the flowing in shaft bottom,
Sand production rate is tested in injection valve (6) one end, compared sand production rate before and after screen casing (2) sand control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810567009.9A CN108518205A (en) | 2018-06-05 | 2018-06-05 | A kind of visual Simulation crosses the experimental provision and method of screen casing sand-preventing process |
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| CN201810567009.9A CN108518205A (en) | 2018-06-05 | 2018-06-05 | A kind of visual Simulation crosses the experimental provision and method of screen casing sand-preventing process |
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