CN104265266B - Horizontal well water controlling completion method evaluation experiment device - Google Patents
Horizontal well water controlling completion method evaluation experiment device Download PDFInfo
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- CN104265266B CN104265266B CN201410453524.6A CN201410453524A CN104265266B CN 104265266 B CN104265266 B CN 104265266B CN 201410453524 A CN201410453524 A CN 201410453524A CN 104265266 B CN104265266 B CN 104265266B
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- 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
- E21B47/00—Survey of boreholes or wells
Abstract
The invention discloses a horizontal well water controlling completion method evaluation experiment device. The horizontal well water controlling completion method evaluation experiment device comprises a horizontally-placed simulation shaft, and the open end of the simulation shaft extends towards the interior of the simulation shaft in a sealing mode to form a well completion simulation tubular column; a liquid drainage opening, an exhaust opening and a fluid inlet are formed in the side wall of the simulation shaft; a fluid outlet is formed in the end, stretching out of the open end of the simulation shaft, of the well completion simulation tubular column, and is communicated with a liquid storage box through a fluid outlet valve, an outlet of the liquid storage box is connected with a control valve, a centrifugal pump, a flowmeter and a fluid inlet valve in sequence, the fluid inlet valve is connected to the fluid inlet of the simulation shaft, and a differential pressure sensor is arranged between the fluid inlet and the fluid outlet. A well completion simulation tubular column linear displacement and locating device is arranged between the end of the well completion simulation tubular column and the open end of the simulation shaft. The differential pressure of multiple well completion modes with different flows and parameters is recorded through the flowmeter and the differential pressure sensor of the device, and the water controlling effects of the different well completion modes under the respective parameters are compared and analyzed.
Description
Technical field
The present invention is with regard to a kind of completion mode evaluating apparatus, and more particularly, to a kind of horizontal well control water completion mode is evaluated real
Experiment device.
Background technology
Different from conventional vertical well, horizontal well with bottom water reservoir is bigger with the contact area of oil reservoir, can be effectively increased draining
Area, changes the seepage flow mode of near wellbore fluid, reduces filtrational resistance, thus adopt can be with very low production during horizontal well
Pressure reduction output is more oily, and this is beneficial to improve oil recovery factor, improves oil field production status.
Although horizontal well Relative vertical well has productivity index height from the point of view of the application present situation of each elephant horizontal well at present
Advantage, but the carrying out with horizontal well development, some problems also gradually come out, and such as horizontal well initial productivity is very high,
It is about 3～10 times of straight well, but there is pressure drop due to along pit shaft reservoir permeability anisotropism and along Wellbore Flow direction,
Make horizontal well targets well section inflow profile uneven, easy premature water breakthrough, and produce moisture content after water breakthrough and can steeply rise,
Oil production drastically declines, and causes its stable production period short, or even some horizontal wells are just gone into operation with regard to water breakthrough.
All inevitably the different degrees of water problems that goes out in horizontal wells, and produce water and have had a strong impact on horizontal well development
Effect.Therefore, from the angle of completion, become a mandarin rule and the control water effect of research level well target well section different control water mode completion
Fruit is analyzed, and to optimum level well capacity, extends horizontal well Production Life, improves recovery ratio and whole development benefit has important reality
Border meaning and theory directive significance.
At present, the wider control water completion technique of domestic application scope include icd (inflow control device) control water completion technique,
Center management and control water completion technique and variable density perforation control water completion technique.Icd completion water control technique is by definite shape
Throttling arrangement produces additional pressure drop, carrys out the inflow profile that regulated fluid flows into horizontal well pit shaft, and common structure has: runner
Formula, nozzle-type and jet tube, major influence factors are nozzle number or aperture number.Management and control water completion technique in center is in horizontal segment
Insertion small diameter tube, stretches into horizontal completion section certain length, its effect is the inflow profile improving horizontal segment, delays water
Ridge, length of tube and diameter centered on main control water influential effect factor.Variable density perforation control water completion technique is in perforating appliances
The close perforating design scheme of upper employing variable orifice, manual control producing pressure differential, make horizontal segment take near wellbore zone, uniform flow to from remote well
Enter, slow down the rate of climb of bottom water, main impact control water effect factor is aperture, hole is close and diameter.
Existing level well target well section Complex Flows experimental provision mainly is supplied to give control by simulation experiment unit, Experimental Flowing Object
System processed, data acquisition and analysis system composition.This simulation experiment unit adopt internal diameter be 124.0mm, external diameter 5.5in about set
Pipe, pipe is outer to be cased with internal diameter 149.1mm, external diameter is the sleeve pipe of 7.5in, the long 6.5m of experimental considerations unit, and two pressure measurement dot spacings are from for 6.0m；
For improving pressure measurement accuracy, two pressure tap pressure reduction are recorded using soft and transparent rubber tube, and certainty of measurement is the 1pa order of magnitude, ring
Sky is tied with fine and close gauze, and experimental considerations unit two ends devise two inlets up and down it is therefore an objective to make wall become a mandarin uniformly.Experimental section is penetrated
3 kinds of hole Signal Phase Design, 45 degree of spiral perforations, 90 degree of spiral perforations, 180 degree spiral perforations, shot density devises 3 kinds, often
Rice 8,16,24 holes, 3 kinds of perforation diameter design, 10,20,30mm.This existing experimental provision mainly passes through measurement in different perforations
Fluid flow and pressure reduction under phase place, perforation diameter, shot density, thus have studied these parameters to wall friction pressure drop, mixing
Pressure drop, the affecting laws of overall presure drop, analyze the affecting laws that wall injection compares mixed pressure drop and acceleration pressure drop simultaneously.Logical
Cross the understanding to this experimentation it was found that this existing apparatus has a following defect:
(1) completion mode being considered is more single, does not account for other completion mode, and such as central canal completion, icd are complete
The difference affecting laws to overall presure drop for the completion mode parameter such as well.
(2) for this completion mode of perforation completion, do not account for the shadow to experimental result for the different casing diameters
Ring, lead to experimental data not comprehensive, analysis is not thorough.
(3) for this completion mode of perforation completion, the shot density that can simulate only has the specification of three kinds of fixations to divide
Not Wei 8,16,24 holes/m it is impossible within the specific limits arbitrarily change hole close thus carrying out many experiments.
(4) the design relatively scope of application of experiment porch less it is impossible to be applied to supporting the use of other water control devices.
(5) the change motility to completion parameter in experimental provision less it is impossible to easily change experiment parameter thus entering
The experiment of the different group of row.
Existing horizontal well with bottom water reservoir three-dimensional physical simulation experimental provision adopts modern application extensive actinoscopy X skill
Art, flowing test technology and numerical control device, set up three-dimensional large-scale physical modeling's model, experiment flow is by High Pressure Model, radiation
Source, ray detector, ray signal processing system etc. form.In cylindrical model, first load the sand that experiment is selected, Ran Houyong
Bottom water, with the sodium iodide of constant pressure at the uniform velocity displacement intermediate receptacle, is simulated in water source.This experimental provision adopts hydraulic pressurization simulation ground
Layer burden pressure；Upper part simulation oil is hidden, and lower partial simulation bottom water is separated with bottom water diffuser screen between two parts, and simulation is unlimited
Equipotential surface under water conservancy diversion state；Employ external diameter 3mm, the stainless steel capillary of internal diameter 1.5mm in blood circulation, provide to model
During little flow velocity, fluid can consume very big flow resistance by capillary tube, makes model obtain stable small pressure feed.Should
Experimental provision can carry out three-dimensional large-sized reservoir physical simulation experiment, using water ridge during ray scanning system scanning horizon mining
Coning process, and the height that rises of bottom water and height in the horizontal direction be distributed.Thus studying bottom water to rise rule, water ridged
Become and development mechanism, the characteristic of fluid imported and exported is analyzed simultaneously.But by the understanding to this experiment flow, find that this is existing
Experimental provision is had to have the disadvantage that
(1) this experimental provision simulation excessively single it is considered to completion mode less, do not account for different completion mode
Impact for horizontal wellbore water breakthrough.
(2) flow in porch not effusion meter measurement entrance device, the coutroi velocity that fails is to experiment knot
The impact of fruit.
(3) horizontal wellbore dimensions less it is impossible to very effectively simulate actual production situation, lead to obtained by experiment
Error in data is larger.
(4) add IodineSodium Solution in testing, but do not account for impact (the such as interface for physical properties of fluids for this solution
Tension force etc.).
Thus, the present inventor relies on experience and the practice being engaged in relevant industries for many years, proposes a kind of horizontal well control water completion
Mode evaluation experimental device, to overcome the defect of prior art.
Content of the invention
It is an object of the invention to provide a kind of horizontal well control water well completion mode evaluating experimental apparatus, can be with Simulation Center pipe
The experiment of the difference completion mode control water effect such as completion, variable density perforation completion, icd completion, by effusion meter and pressure difference sensing
Device is to record under different flow, the pressure reduction of certain completion mode of different parameters, and then relative analyses difference completion mode is each
Control water effect under autoregressive parameter, so that experimental result is closer to real conditions.
Another object of the present invention is to providing a kind of horizontal well control water well completion mode evaluating experimental apparatus, in solving
Heart pipe diverse location, the problem of modelling of different-diameter.
A further object of the present invention is to provide a kind of horizontal well control water well completion mode evaluating experimental apparatus, to solve to become close
The different pore size of degree perforation, the problem of modelling of Kong Mi.
The object of the present invention is achieved like this, a kind of horizontal well control water well completion mode evaluating experimental apparatus；This evaluation is real
Experiment device includes the simulation wellbore hole of a horizontal positioned, is stretched to simulation wellbore hole interior sealing from the opening of simulation wellbore hole and is provided with completion
Simulation tubing string；Described completion simulation tubing string is arranged concentrically with simulation wellbore hole；Described simulation wellbore hole side wall is provided with leakage fluid dram, aerofluxuss
Mouth and fluid intake；The end that described completion simulation tubing string stretches out simulation wellbore hole opening is provided with fluid issuing, this fluid issuing
Reserving liquid tank is communicated in by fluid issuing valve, reserving liquid tank exports be linked in sequence control valve, centrifugal pump, effusion meter and fluid and enters
Mouth valve, fluid inlet valve is connected to the fluid intake of simulation wellbore hole, is provided with one between described fluid intake and fluid issuing
Differential pressure pick-up；Be provided between described completion simulation tubing string end and simulation wellbore hole opening completion simulation tubing string straight-line displacement and
Positioner.
In a better embodiment of the present invention, described completion simulation tubing string straight-line displacement and positioner include fixing
It is arranged on the block that completion simulates tubing string end, the flange both sides of described simulation wellbore hole opening are symmetrically fixed with two axles
To extended screw rod, described block both sides pass through described screw rod, and are fixed on described screw rod by nut.
In a better embodiment of the present invention, described completion simulation tubing string is icd completion tubular column, variable density perforation is complete
Well casing post or central canal completion tubular column.
In a better embodiment of the present invention, described variable density perforation completion tubing string includes the cylinder of one end closing,
The through hole that multi-turn is in that circumference is uniformly arranged axially is interval with the barrel of described cylinder；Through hole submission in axially adjacent two circles
Wrong distribution；Described through hole is provided with screw thread, blocks corresponding through hole by plug-hole nut and constitutes described variable density perforation completion tubing string.
In a better embodiment of the present invention, each described plug-hole nut is respectively equipped with an open-work, each described open-work
There are different apertures.
In a better embodiment of the present invention, described leakage fluid dram is communicated in described reserving liquid tank by leakage fluid dram valve.
From the above mentioned, the horizontal well control water well completion mode evaluating experimental apparatus of the present invention, can be with Simulation Center pipe completion, change
The experimental evaluation of the difference completion mode control water effect such as density perforation completion, icd completion, by effusion meter and differential pressure pickup Lai
Under record different flow, the pressure reduction of certain completion mode of different parameters, and then relative analyses difference completion mode joins respective
Control water effect under several, experimental result is closer to real conditions.
Brief description
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein:
Fig. 1: for the structural representation of the present invention horizontal well control water well completion mode evaluating experimental apparatus.
Fig. 2: for the structural representation of simulation wellbore hole in the present invention and completion simulation tubing string.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now comparison brief description this
Bright specific embodiment.
As shown in Figure 1 and Figure 2, the present invention proposes a kind of horizontal well control water well completion mode evaluating experimental apparatus 100；This evaluation
Experimental provision 100 includes the simulation wellbore hole 1 of a horizontal positioned, from simulation wellbore hole 1 opening 11 to simulation wellbore hole 1 interior sealing
Stretch and be provided with completion simulation tubing string 2；Described completion simulation tubing string 2 is arranged concentrically with simulation wellbore hole 1, forms ring between both side walls
Empty；Described simulation wellbore hole 1 side wall is provided with leakage fluid dram 12, air vent 13 and fluid intake 14；Described completion simulation tubing string 2 stretches out
The end of simulation wellbore hole opening 11 is provided with fluid issuing 24, and this fluid issuing 24 is communicated in liquid storage by fluid issuing valve 35
Case 3, reserving liquid tank 3 outlet is linked in sequence and has control valve 31, centrifugal pump 32, effusion meter 33 and fluid inlet valve 34, fluid intake
Valve 34 is connected to the fluid intake 14 of simulation wellbore hole, is provided with a differential pressure sensing between described fluid intake 14 and fluid issuing 24
Device 4；Described leakage fluid dram 12 is communicated in described reserving liquid tank 3 by leakage fluid dram valve 121.Described completion simulation tubing string 2 end and mould
Intend between pit shaft opening 11, being provided with completion simulation tubing string straight-line displacement and positioner (not shown), thus can change
Completion simulation tubing string 2 stretches into the length in simulation wellbore hole 1 and is accurately positioned.Described completion simulation tubing string is that icd (flows into and controls dress
Put) completion tubular column, variable density perforation completion tubing string or central canal completion tubular column.
The basic operation flow process of above-mentioned evaluation experimental device is:
1. by completion tubular column (central canal completion tubular column, variable density perforation completion tubing string or icd completion tubular to be measured
Post) put in simulation wellbore hole 1, and be sealed against；
2. open control valve 31, fluid inlet valve 34, fluid issuing valve 35, air vent 13, leakage fluid dram valve 121,
Start centrifugal pump 32 to pump into the water in reserving liquid tank 3 in simulation wellbore hole 1, check pipeline whether leak；
3. close fluid issuing valve 35, leakage fluid dram valve 121, start with certain flow (m3/ h) liquid is pumped into mould
Intend pit shaft and discharge gas therein；
4. when having liquid to spray at air vent 13, rapid closing air vent 13, fluid issuing valve 35 is opened simultaneously,
Start to read the data of effusion meter 33 and differential pressure pick-up 4；
5., after adjusting centrifugal pump 32 change flow, again read off the data of effusion meter 33 and differential pressure pick-up 4, and repeat many
Secondary, to read pressure drop data produced by completion tubular column under different flow；
6. close centrifugal pump 32, open fluid issuing valve 35, air vent 13, leakage fluid dram valve 121, simulation well to be drained
Cylinder 1 in liquid when, open simulation wellbore hole 1 opening, change other completion tubular columns and put in this simulation wellbore hole 1；
7. repeat 1-5 step, to complete the measurement to different completion tubular columns.
From the above mentioned, the horizontal well control water well completion mode evaluating experimental apparatus of the present invention, can be with Simulation Center pipe completion, change
The experimental evaluation of the difference completion mode control water effect such as density perforation completion, icd completion, by effusion meter and differential pressure pickup Lai
Under record different flow, the pressure reduction of certain completion mode of different parameters, and then relative analyses difference completion mode joins respective
Control water effect under several, experimental result is closer to real conditions.
Further, in the present embodiment, using long 1780mm, internal diameter be 207mm, wall thickness 6mm steel pipe make simulation
Pit shaft 1, closely, and material is similarly steel to borehole size when this is with horizontal well with bottom water reservoir actual production, with
Toward experiment in small dimension glass material used compare, largely reduce experimental error；Fluid intake 14 and aerofluxuss
Mouth 13 is located at simulation wellbore hole upper side wall, respectively range simulation pit shaft opening and blind end 70mm, fluid intake 14 and aerofluxuss
Mouth 13 is 1 writing brush interface；Leakage fluid dram 12 is located at simulation wellbore hole lower sidewalls.Simulation wellbore hole is for dummy level well, when
After putting into completion simulation tubing string in simulation wellbore hole, the liquid of fluid intake 14 injection can be between simulation wellbore hole and completion simulation tubing string
Formed inventionannulus flow, and by concrete runner (such as: the eyelet of variable density tubing string, the sieve tube segment of icd, central canal opening end) enter
Enter inside completion simulation tubing string, and flow out eventually through fluid issuing.The design of air vent be in order in injection process by ring
Gas in sky and tubing string is discharged, in order to avoid impact experiment conclusion；Leakage fluid dram is in order to after finishing experiment or when changing tubing string
Will be clean for the liquid discharge in simulation wellbore hole.Furthermore, in order to ensure the sealing tested, in the opening flange of simulation wellbore hole
15 fitted seal circles are sealed.
In the present embodiment, carry out mould using the steel pipe that diameter is respectively tri- sizes of 125mm, 148mm, 174mm
Intend the control water effect in bottom water reservoir for the central canal completion tubular column of different-diameter, central canal completion tubular column is total length 2010mm,
The open at one end formula cylinder of wall thickness 9mm；In experimentation, central canal completion tubular column is put in simulation wellbore hole 1, simulation wellbore hole 1 with
Liquid in central canal completion tubular column annular space is entered in central tube body and eventually through fluid issuing row by opening end
Go out；By the regulation to carry out different completion parameters for the length of regulation central canal completion tubular column insertion simulation wellbore hole, observe to phase
Answer the pressure reduction of flow Imitating wellbore fluids entrance and central canal completion tubular column fluid issuing two ends.In addition completion mould can be passed through
Intend tubing string straight-line displacement and positioner and draw central canal completion tubular column so as to diverse location in simulation wellbore hole 1 is simulating
The impact to bottom water reservoir control water effect for the position is entered, such design can carry out many experiments, to carry under different central canals
The accuracy of high experiment conclusion.
Described completion simulates tubing string straight-line displacement and positioner includes being fixedly installed on the gear that completion simulates tubing string end
Block, the flange both sides of described simulation wellbore hole opening are symmetrically fixed with the screw rod of two axially extending settings, described block
Both sides pass through described screw rod, and are fixed on described screw rod by nut.Described completion simulation tubing string straight-line displacement and positioner
Can also be made up of other existing structure such as slide rail, will not be described here.
In the present embodiment, described variable density perforation completion tubing string includes the cylinder of one end closing, the cylinder of described cylinder
The through hole that multi-turn is in that circumference is uniformly arranged axially is interval with wall；Through hole in axially adjacent two circles is interspersed；Described
Through hole is provided with screw thread, blocks corresponding through hole by plug-hole nut, to constitute described variable density perforation completion tubing string.
In the present embodiment, each described plug-hole nut can also be respectively provided with the open-work in a different size aperture, by
This can change the aperture of through hole by plug-hole nut, realizes the experiment of reducing perforation.
Specifically, in the present embodiment, variable density perforation completion tubing string is 2010mm for total length, and internal diameter is respectively
Tri- sizes of 125mm, 148mm, 174mm, wall thickness is one end closing of 9mm, the other end is justified for the steel that diameter 120mm exports
Cylinder, every variable density perforation completion tubing string has 10 circles (row) eyelet, is evenly equipped with 6 through holes in often enclosing, and each turn separation is 170mm,
Perforation length is 1530mm；By blocking the hole of diverse location, the uniform perforation of different hole counts can be carried out and variable density is penetrated
The simulation in hole, in addition aperture can also be changed by plug-hole nut, such that it is able to tested in large quantities be analyzed right
Than.The shot density that first will simulate in experimentation mixes up (realizing by plug-hole), then variable density tubing string is put into simulation
The pressure reduction of simulation wellbore hole fluid intake and the fluid outlet of tubing string in pit shaft, is observed by adjusting fluid flow.
In the present embodiment, described icd completion tubular column is icd completion tubular column used during actual production, but considers
To doing the convenience tested and operability, carry out non-functional transformation on the basis of former icd completion tubular column, mainly increase
Add one outlet joint.The concrete completion parameter that in experimentation, first logical regulation section will be carried out mixes up, and is then placed in simulating
In pit shaft, simulation wellbore hole is entered in icd completion tubular column and eventually through stream by sieve tube segment with the liquid of icd completion tubular column annular space
Body outlet is discharged.By adjusting the flow of injection liquid come observatory control wellbore fluids entrance and icd completion tubular column fluid issuing
The pressure reduction at two ends.
The present invention compared with prior art has the advantages that
(1) simulation wellbore hole considered actual production situation and experiment measuring condition in the case of, by actual specification
Size (except length) is designed processing, and makes experiment conclusion closer to actual production；In addition, fluid intake and fluid issuing
Design can conveniently and efficiently measure the pressure reduction of Liquid output and fluid intake and fluid outlet, the combination of flange and sealing ring
Experimental provision is made to have preferably sealing.
(2) central canal completion tubular column open at one end, the design of one end undergauge composition fluid issuing, not only meet actual life
Product condition, and also allow for experimental implementation and note amount；The block of central canal completion tubular column front ends and the design of screw rod, significantly
Increased the pressure limit that can simulate, also reduce the danger of experiment simultaneously.
(3) the uniform perforation of variable density perforation completion tubing string and the design of autonomous reducing, plug-hole can be carried out in a large number so that testing
Throttling situation under simulation, and the caliber to different specification size and perforating parameter is simulated, thus increased experiment
Accuracy.
(4) interface in icd completion tubular column and the processing of support, substantially reduce experiment difficulty, just must measure and record
Can carry out under conventional laboratory conditions, and can fine simulation practical condition.
The foregoing is only the schematic specific embodiment of the present invention, be not limited to the scope of the present invention.Any
Those skilled in the art, done equivalent variations and modification on the premise of the design without departing from the present invention and principle, all
The scope of protection of the invention should be belonged to.
Claims (5)
1. a kind of horizontal well control water well completion mode evaluating experimental apparatus；It is characterized in that: this evaluation experimental device includes a water
The simulation wellbore hole of placing flat, stretches from the opening of simulation wellbore hole to simulation wellbore hole interior sealing and is provided with completion simulation tubing string；Described complete
Well simulation tubing string is arranged concentrically with simulation wellbore hole；Described simulation wellbore hole side wall is provided with leakage fluid dram, air vent and fluid intake；Institute
State completion and simulate tubing string and stretch out the end of simulation wellbore hole opening and be provided with fluid issuing, this fluid issuing passes through fluid issuing valve
It is communicated in reserving liquid tank, reserving liquid tank outlet is linked in sequence and has control valve, centrifugal pump, effusion meter and fluid inlet valve, fluid intake
Valve is connected to the fluid intake of simulation wellbore hole, is provided with a differential pressure pick-up between described fluid intake and fluid issuing；Described
It is provided with completion simulation tubing string straight-line displacement and positioner between completion simulation tubing string end and simulation wellbore hole opening；
Described completion simulates tubing string straight-line displacement and positioner includes being fixedly installed on the block that completion simulates tubing string end, institute
The flange both sides stating simulation wellbore hole opening are symmetrically fixed with the screw rod of two axially extending settings, and described block both sides are worn
Cross described screw rod, and be fixed on described screw rod by nut.
2. as claimed in claim 1 horizontal well control water well completion mode evaluating experimental apparatus it is characterised in that: the simulation of described completion
Tubing string is icd completion tubular column, variable density perforation completion tubing string or central canal completion tubular column.
3. as claimed in claim 2 horizontal well control water well completion mode evaluating experimental apparatus it is characterised in that: described variable density is penetrated
Hole completion tubular column includes the cylinder of one end closing, and it is in that circumference is uniformly arranged that the barrel of described cylinder is axially interval with multi-turn
Through hole；Through hole in axially adjacent two circles is interspersed；Described through hole is provided with screw thread, is led to accordingly by the closure of plug-hole nut
Hole constitutes described variable density perforation completion tubing string.
4. as claimed in claim 3 horizontal well control water well completion mode evaluating experimental apparatus it is characterised in that: each described plug-hole spiral shell
It is respectively equipped with an open-work, each described open-work has different apertures on mother.
5. as claimed in claim 1 horizontal well control water well completion mode evaluating experimental apparatus it is characterised in that: described leakage fluid dram lead to
Cross leakage fluid dram valve and be communicated in described reserving liquid tank.
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| CN113803053B (en) * | 2021-10-14 | 2023-01-03 | 中国石油大学(北京) | Test equipment and experimental system for water control simulation of well completion engineering |
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