CN106768844A - Bend pipe sand plug and standpipe take the experimental provision of sand in a kind of marine oil and gas course of conveying - Google Patents
Bend pipe sand plug and standpipe take the experimental provision of sand in a kind of marine oil and gas course of conveying Download PDFInfo
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- CN106768844A CN106768844A CN201710038894.7A CN201710038894A CN106768844A CN 106768844 A CN106768844 A CN 106768844A CN 201710038894 A CN201710038894 A CN 201710038894A CN 106768844 A CN106768844 A CN 106768844A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/04—Investigating sedimentation of particle suspensions
Abstract
The invention discloses the experimental provision that bend pipe sand plug in a kind of marine oil and gas course of conveying and standpipe take sand, including standpipe section, bend loss, plus silo, air supply system, water system and data collecting system and sand grains motion monitoring system；Standpipe section and integrated " L " the type pipeline section of bend loss, air supply system and water system are connected with air and liquid mixer, gaza's tank, bend loss and standpipe section are sequentially connected after air and liquid mixer, data collecting system is used to respectively be acquired the pressure signal in supply air line, gas-liquid mixed pipeline, bend loss and standpipe section, and sand grains motion monitoring system is used to be monitored the sand grains state in bend loss and standpipe section.The present invention measures the motion conditions of the sand grains of different-grain diameter according to different conveying operating modes, while condition required when obtaining being restarted after sand grains blocking bend pipe under the conditions of equidimension, for the risk assessment that pipeline under different conveying operating modes occurs sand plug provides foundation, the safe efficient production run of marine oil and gas is realized.
Description
Technical field
The invention belongs to bend pipe sand plug in marine oil and gas production technique field, more particularly to a kind of marine oil and gas course of conveying
With the experimental provision that standpipe takes sand.
Background technology
Submarine oil natural gas after being filtered by wellhead equipment, is still carried micro- in recovery process in well stream medium
Small sand grains and minimum gas, with the change of course of conveying flowing velocity and the direction of motion, especially when flow rate of liquid compared with
Hour, sand grains is easily deposited in the larger bend loss of subsequent pipeline course of conveying mean curvature and standpipe section, can be caused when serious
Block, the normal production of influence.
In addition, the deposition characteristics of particle are influenceed significantly, to determine that medium carries the motion shape of sand grains by the flow behavior of medium
Condition, it is significant for managing defeated media security operation.Therefore the fluid sand-carrying energy for submarine pipeline course of conveying is needed
Power and sand deposition characteristics carry out detailed experimental study, determine that conveyance conduit silt carrying capacity, sand plug are restarted required condition etc. and be
The risk assessment that pipeline specific location occurs sand plug under difference conveying operating mode provides foundation.
The content of the invention
The problem of sand is taken for bend pipe sand plug in marine oil and gas course of conveying and standpipe, the present invention provides a kind of marine oil and gas
Bend pipe sand plug and standpipe take the experimental provision of sand in course of conveying, and the sand grains of different-grain diameter is measured according to different conveying operating modes
Motion conditions, while condition required when obtaining being restarted after sand grains is blocked under the conditions of equidimension bend loss, is different conveyings
The risk assessment that pipeline occurs sand plug under operating mode provides foundation, realizes the safe efficient production run of marine oil and gas.
In order to realize above-mentioned functions, patent of the present invention employs following technical scheme：
Bend pipe sand plug and standpipe take the experimental provision of sand in a kind of marine oil and gas course of conveying, including standpipe section, bend loss,
Plus silo, air supply system, water system and data collecting system and sand grains motion monitoring system；The standpipe section and bend loss
Integrated " L " type pipeline section, the air supply system and water system are connected with air and liquid mixer, after the air and liquid mixer
Gaza's tank, bend loss and standpipe section are sequentially connected, the data collecting system is used for respectively to supply air line, gas-liquid mixed pipe
Pressure signal in road, bend loss and standpipe section is acquired, and the sand grains motion monitoring system is used for bend loss and standpipe
Sand grains state in section is monitored.
Preferably, the air supply system includes compressor and supply air line, and the compressor is connected successively by supply air line
It is connected to surge tank and gas flowmeter and first pressure transmitter；
The water system includes water tank and supply channel, and the water tank is connected with centrifugation in turn by supply channel
Pump and fluid flowmeter；
The gas-liquid that the supply air line and supply channel are provided is mixed by air and liquid mixer, on the gas-liquid mixed pipeline
Be provided with second pressure transmitter, gas-liquid mixed pipeline is connected with gaza's tank afterwards, gaza's tank successively again connecting bending pipeline section
With standpipe section；
Gaza's tank top is provided with first gaza's funnel of the first ball valve control, and gaza's tank is internally provided with and stirs
Mix device；
The standpipe section top is provided with second gaza's funnel of the second ball valve control, the bend loss and standpipe section
On be disposed with the 3rd pressure transmitter, the 4th pressure transmitter, the 5th pressure transmitter, the 6th pressure transmitter and the 7th
Pressure transmitter, the 5th pressure transmitter in correspondence standpipe section, the 6th pressure transmitter and the 7th pressure transmitter according to
It is secondary to be provided with lower sample cock, middle sample cock and upper sample cock in standpipe section, also set up scale in standpipe section
Scale；Outlet of the medium at the top of the standpipe section is provided with the return pipe road connected with water tank, is provided with the return pipe road
Screening plant；
The data collecting system includes data collecting card, the data collecting card respectively with first pressure transmitter, the
Two pressure transmitters, the 3rd pressure transmitter, the 4th pressure transmitter, the 5th pressure transmitter, the 6th pressure transmitter and
Seven pressure transmitters pass through connection；
The sand grains motion monitoring system includes high-speed camera, and the high-speed camera is used in experimentation to curved
Sand grains motion conditions in pipeline section and standpipe section carry out production monitoring.
Preferably, on the supply air line of the air supply system, set on pipeline between the compressor and the surge tank
The first valve is equipped with, the second valve, the first pressure is provided between the surge tank and the gas flowmeter on pipeline
The 3rd valve is provided between transmitter and the air and liquid mixer on pipeline；On the supply channel of the water system, institute
State and be provided with the 4th valve between water tank and the centrifugal pump on pipeline, managed between the centrifugal pump and the fluid flowmeter
The 5th valve is provided with road, the 6th valve is provided between the fluid flowmeter and the air and liquid mixer on pipeline.
Preferably, the bend loss, standpipe section and add silo use transparent organic glass pipe.
Bend pipe sand plug and standpipe take the experimental provision of sand in a kind of marine oil and gas course of conveying, its research standpipe lifting sand experiment
Method and step be：
Step one：When initial, the valve of whole experimental provision is full of gas all in closed mode, and in whole experimental provision
Body；First, the 4th valve, the 5th valve and the 6th valve are opened successively, and the water in water tank is first laggard by centrifugal pump
Enter to plus silo, bend loss and standpipe section in；Next, it is vertical that the slow lift for adjusting centrifugal pump maintains the liquid level in standpipe section
More than the graduated scale of pipeline section and no water is entered into screening plant；Furthermore, the first ball valve of slow regulation make plus silo in
Gas is all released, according to whether there is the entrance of gas, it is simultaneously fast that the first valve, the second valve, the 3rd valve are opened in selection successively
Speed opens compressor regulation tolerance, and the tolerance for having stabilization after a period of time is entered into standpipe section by bend loss；Finally, beat
Open data collecting card and high-speed camera, start recording second pressure transmitter, the 3rd pressure transmitter, the 4th pressure inverting
The data of device, the 5th pressure transmitter, the 6th pressure transmitter and the 7th pressure transmitter；
Step 2：First, the second ball valve is opened, the sand grains suspension of the certain solubility of certain particle diameter that will configure passes through the
Two add sand hopper to be added in standpipe section, are then turned off the second ball valve, and the fortune of standpipe section sand grains is observed by high-speed camera
Emotionally condition, when standpipe section bottom is deposited under sand grains, adjusts centrifugal pump and slowly changes fluid flow, while passing through data acquisition
The pressure transmitters of standpipe Duan Shang five, the 6th pressure transmitter, the pressure information and height of the 7th pressure transmitter that card is collected
Graduated scale observation standpipe on the production monitoring information and reference standpipe section of the grains of sand situation in fast video camera opposition pipeline section
The motion conditions of section sand grains, obtain the movement velocity of sand grains by the time of different graduation marks, and then sentence by measuring sand grains
Whether disconnected sand grains balances in standpipe section；Secondly, lower sample cock, middle sample cock and the upper sampling in standpipe section are opened respectively
The sand grains of various location enters shape sampling in valve opposition pipeline section, and diverse location sand grains is in different time in then measuring standpipe section
The change of solubility, then its corresponding liquid phase flow rate is the sized particles corresponding critical flow velocity under the concentration；Finally, to data
The pressure signal of data collecting card collection, the video of high-speed camera production, the sand grains characteristics of motion that measures and critical flow velocity with
And the solubility change of collection makes a record.
Step 3：After step 2 terminates, readjust centrifugal pump and increase liquid measure, remaining sand grains in standpipe section is carried
Go out, then repeat step one, open the second ball valve by second plus sand hopper to addition different-grain diameter and solubility in standpipe section
Sand grains carry out next group of experiment, then repeat step two.
Preferably, the remaining sand grains for being carried away from standpipe section in above-mentioned steps three is by the medium flow field at the top of standpipe section
Export to and sieved up to the screening plant on return pipe road, sand grains is separated, current are recycled in returning to water tank.
Bend pipe sand plug and standpipe take the experimental provision of sand in a kind of marine oil and gas course of conveying, its research bend pipe sand plug experiment
Method and step be：
Step one：When initial, the valve of whole experimental provision is full of gas all in closed mode, and in whole experimental provision
Body；First, the 4th valve, the 5th valve and the 6th valve are opened successively, and the water in water tank is successively entered by centrifugal pumping
To plus silo, bend loss and standpipe section in；Secondly, the lift of slow regulation centrifugal pump makes the liquid level in standpipe section maintain standpipe
Section graduated scale more than and no water enter into screening plant；Furthermore, the first ball valve of slow regulation makes to add the gas in silo
Body is all released；Finally, data collecting card and high-speed camera are opened, the pressure transmitter of start recording the 4th, the 5th pressure become
Send the data of device, the 6th pressure transmitter and the 7th pressure transmitter；
Step 2：First, open the second ball valve, by second plus sand hopper to standpipe section in add an a certain amount of scale
Very little sand grains suspension, until standpipe section bottom bend loss 34 is blocked completely；Secondly, regulation centrifugal pump increase frequency, when curved
When the pressure of pipeline section upstream reaches certain value, the pipeline of bend loss will be opened；Again, regulation centrifugal pump continues to increase liquid flow
Amount, observes pipe diameter change after lower stabilization different in flow rate, and record data；Finally, the data in whole experiment process are adopted
Second pressure transmitter, the 3rd pressure transmitter, the 4th pressure transmitter, the 5th pressure transmitter, the 6th that truck is collected
The pressure information of pressure transmitter and the 7th pressure transmitter is analyzed, and obtains the critical pressure differential of pipeline opening under the operating mode；
Step 3：Change the particle diameter of sand grains and the amount of sand grains, repeat step one is obtained under different operating modes, bend pipe sand plug weight
Open the pressure difference data of needs and the delta data of pipe diameter；
Step 4：After experiment terminates, gas-liquid flow is increased, remaining sand grains is carried out into bend loss.
Bend pipe sand plug and standpipe take the experimental provision of sand in a kind of marine oil and gas course of conveying, and its research adds silo sand plug reality
The method and step tested is：
Step one：When initial, the valve of whole experimental provision is all in closed mode；First, the first ball valve is opened, by the
One plus sand hopper to plus silo in add a certain amount of certain size sand suspension liquid until block plus silo inlet duct；Its
It is secondary, the 4th valve, the 5th valve, the 6th valve and the first valve, the second valve, the 3rd valve are opened successively, and adjust gas-liquid
Flow is certain value, until pipeline is opened and is stablized；Furthermore, pipe diameter after stabilization under regulation gas-liquid discharge record difference operating mode
Size；Finally, the second pressure transmitter that is collected to the data collecting card in whole experiment process, the 3rd pressure transmitter,
The pressure information of the 4th pressure transmitter, the 5th pressure transmitter, the 6th pressure transmitter and the 7th pressure transmitter is divided
Analysis, obtains maximum differential pressure when pipeline is opened；
Step 2：Change the particle diameter of sand grains and the amount of sand grains, repeat step one is obtained under different operating modes, plus silo sand plug
Restart the pressure difference data of needs；
Step 3：After experiment terminates, agitator is opened, open air flow quantity, remaining sand grains is cleared out of plus silo.
Bend pipe sand plug and standpipe take the experimental provision of sand in a kind of marine oil and gas course of conveying, and its research adds silo and bend pipe
Sand plug experiment method and step be：
Simultaneously plus sand plug plug bend loss and plus silo, adjust gas-liquid flow, obtain the pressure data and not when pipeline is opened
Pipe diameter size variation during with flow velocity.
Preferably, the medium for being used in above-mentioned whole experiment process is water, air and quartz sand.
The beneficial effects of the invention are as follows：The motion conditions of the sand grains of different-grain diameter are measured according to different conveying operating modes, together
When obtain sand grains under the conditions of equidimension and block condition required when restarting after bend loss, be pipeline hair under different conveying operating modes
The stifled risk assessment of greensand provides foundation, realizes the safe efficient production run of marine oil and gas.Specifically, it is a kind of by providing
Bend pipe sand plug and standpipe take the experimental provision of sand in marine oil and gas course of conveying, and during obtaining oil-gas transportation by experiment,
The motion conditions of small sand grains, measure motion state when different-grain diameter sand grains is balanced, curved with oil-gas transportation standpipe equidimension
Silo difference sand plug and coupling influence are managed and add, sand plug restarts pressure difference before and after required time, sand plug device under obtaining correspondence flow velocity
The change of change, pipe diameter size etc., prop-carrying capacity and sand deposition characteristics to course of conveying fluids within pipes are carried out in detail
Experimental study, determine standpipe silt carrying capacity, it is husky stifled restart required for condition etc. under different conveying operating modes pipeline there is sand plug
Risk assessment provide foundation.
Brief description of the drawings
Fig. 1 is that the principle of the experimental provision that bend pipe sand plug and standpipe take sand in marine oil and gas course of conveying of the present invention is illustrated
Figure；
Fig. 2 is the concrete structure schematic diagram of Fig. 1 plus silo sand；
Fig. 3 is the concrete structure schematic diagram of bend loss and standpipe section in Fig. 1.
Wherein：1- compressors, the valves of 2- first, 3- surge tanks, the valves of 4- second, 5- gas flowmeters, the valves of 6- the 3rd,
7- first pressure transmitters, the valves of 8- the 4th, 9- centrifugal pumps, the valves of 10- the 5th, 11- fluid flowmeters, the valves of 12- the 6th,
13- air and liquid mixers, 14- second pressure transmitters, 15- adds silo, the pressure transmitters of 16- the 3rd, the pressure invertings of 17- the 4th
Device, the ball valves of 18- first, 19- first plus sand hopper, the pressure transmitters of 20- the 5th, sample cock under 21-, the pressure of 22- the 6th become
Device is sent, sample cock in 23-, 24- graduated scales, the pressure transmitters of 25- the 7th, the upper sample cocks of 26-, the ball valves of 27- second,
28- second plus sand hopper, 29- high-speed cameras, 30- screening plants, 31- water tanks, 32- data collecting cards, 33- agitators,
34- bend loss, 35- standpipes section.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is that the principle of the experimental provision that bend pipe sand plug and standpipe take sand in marine oil and gas course of conveying of the present invention is illustrated
Figure；Fig. 2 is the concrete structure schematic diagram of Fig. 1 plus silo sand；Fig. 3 is the concrete structure schematic diagram of bend loss and standpipe section in Fig. 1.
As Figure 1-3, bend pipe sand plug and standpipe take the experimental provision of sand in a kind of marine oil and gas course of conveying, including vertical
Pipeline section 35, bend loss 34, plus silo 15, air supply system, water system and data collecting system and sand grains motion monitoring system；
Its neutral tube section 35 and integrated " L " the type pipeline section of bend loss 34, and air supply system and water system with air and liquid mixer 13
It is connected, gaza's tank 15, bend loss 34 and standpipe 35, the i.e. upstream of bend loss 34 of section is sequentially connected after air and liquid mixer 13 and is added
Husky tank 15 is connected, and the downstream of bend loss 34 connects with standpipe section 35；Wherein data collecting system is used for respectively to supply air line, gas
Pressure signal in liquid mixed pipe line, bend loss 34 and standpipe section 35 is acquired, and sand grains motion monitoring system is used for curved
Sand grains state in pipeline section 34 and standpipe section 35 is monitored.
Preferably, air supply system includes compressor 1 and supply air line, and wherein compressor 1 is sequentially connected by supply air line
There are surge tank 3 and gas flowmeter 5 and first pressure transmitter 7；
Water system includes water tank 31 and supply channel, and wherein water tank 31 is connected with centrifugation in turn by supply channel
Pump 9 and fluid flowmeter 11；
The gas-liquid that supply air line and supply channel are provided is mixed by air and liquid mixer 13, is provided with gas-liquid mixed pipeline
Second pressure transmitter 14, gas-liquid mixed pipeline is connected with gaza's tank 15 afterwards, and the connecting bending pipeline section 34 successively of gaza's tank 15
With standpipe section 35；
The top of gaza's tank 15 is provided with first gaza's funnel 19 of the control of the first ball valve 18, and the inside of gaza's tank 15 is set
There is agitator 33；
The top of standpipe section 35 is provided with second gaza's funnel 28 of the control of the second ball valve 27, and bend loss 34 and standpipe
The 3rd pressure transmitter 16 is disposed with section 35, the 4th pressure transmitter 17, the 5th pressure transmitter 20, the 6th pressure becomes
The pressure transmitter 25 of device 22 and the 7th is sent, wherein the 5th pressure transmitter 20 in corresponding standpipe section 35, the 6th pressure transmitter
22 and the 7th pressure transmitter 25 successively standpipe section 35 on be provided with lower sample cock 21, middle sample cock 23 and upper sampling valve
Door 26, also sets up graduated scale 24 in standpipe section 35 in addition；
Data collecting system includes data collecting card 32, wherein data collecting card 32 respectively with first pressure transmitter 7, the
Two pressure transmitters 14, the 3rd pressure transmitter 16, the 4th pressure transmitter 17, the 5th pressure transmitter 20, the 6th pressure become
The pressure transmitter 25 of device 22 and the 7th is sent by connection, and then the pressure signal in respective line is acquired；
Sand grains motion monitoring system includes high-speed camera 19, and wherein high-speed camera 19 is used in experimentation to curved
Sand grains motion conditions in pipeline section 34 and standpipe section 35 carry out production monitoring.
Preferably, the outlet of the medium at the top of standpipe section 35 is provided with the return pipe road connected with water tank 31, wherein return pipe
Screening plant 30 is provided with road, the screening plant 30 is used to be sieved the water sand gas mixture carried out from standpipe section 35
Point, and then the grains of sand are separated, and current is recycled in returning to water tank 31.
Preferably, on the supply air line of air supply system, the first valve is provided between compressor 1 and surge tank 3 on pipeline
Door 2, is provided with the second valve 4, first pressure transmitter 7 and air and liquid mixer on pipeline between surge tank 3 and gas flowmeter 5
The 3rd valve 6 is provided between 13 on pipeline；And on the supply channel of water system, managed between water tank 31 and centrifugal pump 9
The 4th valve 8 is provided with road, the 5th valve 10, fluid flow is provided between centrifugal pump 9 and fluid flowmeter 11 on pipeline
Between meter 11 and air and liquid mixer 13 the 6th valve 12 is provided with pipeline.
Preferably, bend loss 34, standpipe section 35 and add silo 15 use transparent organic glass pipe.
Bend pipe sand plug and standpipe take the experimental provision of sand in the marine oil and gas course of conveying that the present invention is provided, its research standpipe
The concrete operations of lifting sand experiment are as follows：
Step one：When initial, the valve of whole experimental provision is full of gas all in closed mode, and in whole experimental provision
Body；First, the 4th valve 8, the 5th valve 10 and the 6th valve 12 are opened successively, and the water in water tank 30 passes through the pump of centrifugal pump 9
Send successively enter into plus silo 15, bend loss 34 and standpipe section 35 in；Secondly, the lift of slow regulation centrifugal pump 9 makes standpipe section
The graduated scale more than 24 and no water that liquid level in 35 maintains standpipe section 35 are entered into screening plant 30；Furthermore, slowly
Adjust the first ball valve 18 make plus silo 15 in gas all release, according to whether there is the entrance of gas, selection opens the successively
One valve 2, the second valve 4, the 3rd valve 6 simultaneously quickly open the regulation tolerance of compressor 1, there is the tolerance of stabilization after a period of time
Entered into standpipe section 35 by bend loss 34；Finally, data collecting card 32 and high-speed camera 29, start recording second are opened
Pressure transmitter 14, the 3rd pressure transmitter 16, the 4th pressure transmitter 17, the 5th pressure transmitter 20, the 6th pressure inverting
The data of the pressure transmitter 25 of device 22 and the 7th；
Step 2：First, the second ball valve 27 is opened, the sand grains suspension of the certain solubility of certain particle diameter that will have been configured passes through
Second adds sand hopper 28 to be added in standpipe section 35, is then turned off the second ball valve 27, and standpipe section is observed by high-speed camera 29
The motion conditions of 35 sand grains, when standpipe 35 bottom of section is deposited under sand grains, regulation centrifugal pump 9 slowly changes fluid flow,
Simultaneously by data collecting card 32 collect on standpipe section 35 on the 5th pressure transmitter 20, the 6th pressure transmitter 22,
The production monitoring information of the grains of sand situation in pressure information and high-speed camera 29 the opposition pipeline section 35 of the 7th pressure transmitter 25
And with reference to the motion conditions of the observation standpipe section sand grains of graduated scale 24 in standpipe section 35, by measuring sand grains by difference
The time of graduation mark can obtain the movement velocity of sand grains, and then judge whether sand grains balances in standpipe section 35；Secondly, respectively
Various location in lower sample cock 21, middle sample cock 23 and the opposition pipeline section 35 of upper sample cock 26 in opening standpipe section 35
The grains of sand enter shape sampling, in the change of different time solubility, then its is corresponding then to measure diverse location sand grains in standpipe section 35
Liquid phase flow rate is the sized particles corresponding critical flow velocity under the concentration；Finally, to the pressure of the collection of data data collecting card 32
Force signal, the video of the production of high-speed camera 29, the sand grains characteristics of motion for measuring and critical flow velocity and the change of the solubility of collection
Make a record；
Step 3：After step 2 terminates, readjust centrifugal pump 9 and increase liquid measure, by remaining sand grains in standpipe section 35
Carrying is gone out, then repeat step one, opens the second ball valve 27 different to being added in standpipe section 35 by second plus sand hopper 28
The sand grains of particle diameter and solubility carries out next group of experiment, then repeat step two.
Preferably, the medium flow field that the remaining sand grains for being carried away from standpipe section 35 in step 3 passes through the top of standpipe section 35
Export to and sieved up to the screening plant 30 on return pipe road, sand grains is separated, current are recycled in returning to water tank 31.
Bend pipe sand plug and standpipe take the experimental provision of sand in the marine oil and gas course of conveying that the present invention is provided, its research bend pipe
The concrete operations of sand plug experiment are as follows：
Step one：When initial, the valve of whole experimental provision is full of gas all in closed mode, and in whole experimental provision
Body；First, the 4th valve 8, the 5th valve 10 and the 6th valve 12 are opened successively, and the water in water tank 30 is sent by centrifugal pump 9
Successively enter into plus silo 15, bend loss 34 and standpipe section 35 in；Secondly, the lift of slow regulation centrifugal pump 9 makes standpipe section 35
In liquid level maintain standpipe section 35 graduated scale more than 24 and no water enter into screening plant 30；Furthermore, it is slow to adjust
Saving the first ball valve 18 makes to add the gas in silo 15 all to be released；Finally, data collecting card 32 and high-speed camera 29 are opened, is opened
Begin the 4th pressure transmitter 17 of record, the 5th pressure transmitter 20, the 6th pressure transmitter 22 and the 7th pressure transmitter 25
Data；
Step 2：First, the second ball valve 27 is opened, it is a certain amount of to being added in standpipe section 35 by second plus sand hopper 28
The sand grains suspension of certain size, until standpipe 35 bottom bend loss 34 of section are blocked completely；Secondly, regulation centrifugal pump 9 increases
Frequency, when the pressure of the upstream of bend loss 34 reaches certain value, the pipeline of bend loss 34 will be opened；Again, centrifugal pump 9 is adjusted
Continue to increase fluid flow, observe pipe diameter change after lower stabilization different in flow rate, and record data；Finally, to whole real
Data collecting card 32 is collected during testing second pressure transmitter 14, the 3rd pressure transmitter 16, the 4th pressure transmitter
17th, the pressure information of the 5th pressure transmitter 20, the 6th pressure transmitter 22 and the 7th pressure transmitter 25 is analyzed, and obtains
The critical pressure differential that pipeline is opened under the operating mode；
Step 3：Change the particle diameter of sand grains and the amount of sand grains, repeat step one is obtained under different operating modes, bend pipe sand plug weight
Open the pressure difference data of needs and the delta data of pipe diameter；
Step 4：After experiment terminates, gas-liquid flow is increased, remaining sand grains is carried out into bend loss.
Bend pipe sand plug and standpipe take the experimental provision of sand in the marine oil and gas course of conveying that the present invention is provided, and its research adds sand
The concrete operations of tank sand plug experiment are as follows：
Step one：When initial, the valve of whole experimental provision is all in closed mode；First, the first ball valve 18 is opened, is passed through
First plus sand hopper 19 to plus silo 15 in add the sand suspension liquid of a certain amount of certain size until blocking plus silo 15 enters
Mouthful pipeline, here, plus silo 15 outlet position be higher than plus silo 15 inlet tube position；Secondly, the 4th is opened successively
Valve 8, the 5th valve 10, the 6th valve 12 and the first valve 2, the second valve 4, the 3rd valve 6, and it is one to adjust gas-liquid flow
Definite value, until pipeline is opened and is stablized；Furthermore, pipe diameter size after stabilization under regulation gas-liquid discharge record difference operating mode；Most
Afterwards, to second pressure transmitter 14, the 3rd pressure transmitter the 16, the 4th of the collection of data collecting card 32 in whole experiment process
The pressure information of pressure transmitter 17, the 5th pressure transmitter 20, the 6th pressure transmitter 22 and the 7th pressure transmitter 25 enters
Row analysis, obtains maximum differential pressure when pipeline is opened；
Step 2：Change the particle diameter of sand grains and the amount of sand grains, repeat step one is obtained under different operating modes, plus silo sand plug
Restart the pressure difference data of needs；
Step 3：After experiment terminates, agitator 33 is opened, open air flow quantity, remaining sand grains is cleared out of plus silo.
Bend pipe sand plug and standpipe take the experimental provision of sand in the marine oil and gas course of conveying that the present invention is provided, and its research adds sand
The concrete operations of tank and bend pipe sand plug coupling experiment are as follows：
Add sand plug plug bend loss 34 simultaneously and add silo 15, adjust gas-liquid flow, obtain pressure data when pipeline is opened
And pipe diameter size variation when different in flow rate.
Preferably, the medium for being used in whole experiment process is water, air and quartz sand.
Bend pipe sand plug and standpipe take the experimental provision of sand in the marine oil and gas course of conveying that the present invention is provided, and are research ocean
The standpipe of oil-gas transportation process takes sand and bend pipe sand plug restarts condition and rule, bend loss 34, standpipe section 35 and adds silo 15 equal
Using transparent organic glass pipe.By after pit shaft filtering, the fluid of conveyance conduit is mainly oil, water and micro gas, wherein
Comprising a small amount of small particle sand grains, test the medium for using and be respectively water, air and quartz sand.By being centrifuged in whole experimental system
Pump provides aqueous medium, and air is provided by compressor, by first plus sand hopper and second plus sand hopper respectively toward in experimental provision
Add sand grains.Lifting sand experiment is carried out in standpipe section, graduated scale is carved with standpipe section, standpipe section upper, middle and lower is respectively provided with 3 and takes
Sample valve and 3 pressure transmitters, while the moving situation of sand grains is recorded by high-speed camera, by the at the top of standpipe section
Two add sand hopper to the sand grains suspension that different-grain diameter, different solubility are added in standpipe section, adjust gas-liquid flow, obtain different works
The motion conditions of sand grains under condition；By first plus sand hopper to plus silo and bend loss in add enough sand grains to block respectively curved
Pipeline section and plus silo, pressure change and pipe diameter size variation when regulation gas-liquid discharge record pipeline is opened.
Specifically, to measure the motion conditions of different-grain diameter sand grains, first will test standpipe section it is hydraulically full, open standpipe section
The ball valve of top second, by second gaza's funnel to sand grains solution is added in standpipe section, when sand grains reaches standpipe section bottom soon
When, open centrifugal pump and be slowly increased fluid flow, in this process, by high-speed camera, with reference to the scale in standpipe section
The motion conditions of scale observation standpipe section sand grains, sand grains can be obtained by measuring sand grains by the time of different graduation marks
Movement velocity, at the same by standpipe section in diverse location thief hatch sampling and measuring sand grains solubility change and by standpipe section in not
The pressure signal for measuring standpipe section diverse location with the pressure transmitter of position changes, and judges whether the sand grains in standpipe section is in
Poised state, when sand grains is balanced in standpipe section, records corresponding flow rate of liquid, and this speed is the critical of the size sand grains
Flow velocity.
Specifically, to measure bend pipe and adding the sand plug of silo to restart condition, sand plug is carried out at the bend loss of standpipe section bottom
Experiment and add in bend loss upstream sand plug experiment is carried out at silo, it is first that experimental provision is hydraulically full, open standpipe section top the
Two ball valves, by second gaza's funnel to adding the sand grains of a certain amount of certain size to block bend loss in standpipe, adjust gas-liquid flow
Amount is until a certain fixed value, by pressure changing before and after bend loss in pressure transmitter record whole process, obtains bend pipe
Duan Qianhou pressure difference maximums, change flow velocity and repeat above-mentioned experiment, can obtain being got through under different-grain diameter sand grains different liquids flow velocity
Time needed for pipeline, pipe diameter size and pressure change；By first plus sand hopper to plus silo in add it is a certain amount of
Sand grains blocking plus silo inlet duct are carried out plus the experiment of silo sand plug, open centrifugal pump, adjust fluid flow to a certain fixed value,
Pipe diameter size after the time and stabilization being opened to used by pipeline opening from centrifugal pump is recorded, and is recorded by pressure transmitter
Sand plug adds pressure changing before and after silo, obtains pressure difference maximum, increases flow velocity observation pipeline change, change grit size and
Quantity repeats above-mentioned experiment；Sand grains is added toward experimental provision, while blocking bend loss and adding silo, is repeated the above steps, obtained
To the pressure difference maximum of experimental provision, and bend loss and plus silo blocking coupling condition.
In the description of the invention, it is to be understood that term " on ", D score, " in ", " top ", the side of the instruction such as " bottom "
Position or position relationship are, based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and described with simplified,
Rather than indicate imply signified device or element must have specific orientation, with specific azimuth configuration and operation, because
This is not considered as limiting the invention.
Although above-mentioned be described with reference to accompanying drawing to specific embodiment of the invention, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need the various modifications made by paying creative work or deformation still within protection scope of the present invention.
Claims (10)
1. bend pipe sand plug and standpipe take the experimental provision of sand in a kind of marine oil and gas course of conveying, it is characterized in that, including standpipe section,
Bend loss, plus silo, air supply system, water system and data collecting system and sand grains motion monitoring system；The standpipe section
" L " type pipeline section integrated with bend loss, the air supply system and water system are connected with air and liquid mixer, and the gas-liquid is mixed
Gaza's tank, bend loss and standpipe section are sequentially connected after clutch, the data collecting system is used for respectively to supply air line, gas-liquid
Pressure signal in mixed pipe line, bend loss and standpipe section is acquired, and the sand grains motion monitoring system is used for bend loss
It is monitored with the sand grains state in standpipe section.
2. bend pipe sand plug and standpipe take the experimental provision of sand, its feature in marine oil and gas course of conveying as claimed in claim 1
Be, the air supply system include compressor and supply air line, the compressor by supply air line be connected with turn surge tank and
Gas flowmeter and first pressure transmitter；
The water system include water tank and supply channel, the water tank by supply channel be connected with turn centrifugal pump and
Fluid flowmeter；
The gas-liquid that the supply air line and supply channel are provided is mixed by air and liquid mixer, is set on the gas-liquid mixed pipeline
There is second pressure transmitter, gas-liquid mixed pipeline is connected with gaza's tank afterwards, gaza's tank connecting bending pipeline section and vertical again successively
Pipeline section；
Gaza's tank top is provided with first gaza's funnel of the first ball valve control, and gaza's tank is internally provided with stirring
Device；
The standpipe section top is provided with second gaza's funnel of the second ball valve control, the bend loss and standpipe Duan Shangyi
It is secondary to be provided with the 3rd pressure transmitter, the 4th pressure transmitter, the 5th pressure transmitter, the 6th pressure transmitter and the 7th pressure
Transmitter, the 5th pressure transmitter in the correspondence standpipe section, the 6th pressure transmitter and the 7th pressure transmitter exist successively
Lower sample cock, middle sample cock and upper sample cock are provided with standpipe section, graduated scale is also set up in standpipe section；
Outlet of the medium at the top of the standpipe section is provided with the return pipe road connected with water tank, and being provided with screening on the return pipe road sets
It is standby；
The data collecting system includes data collecting card, and the data collecting card is pressed with first pressure transmitter, second respectively
Power transmitter, the 3rd pressure transmitter, the 4th pressure transmitter, the 5th pressure transmitter, the 6th pressure transmitter and the 7th pressure
Power transmitter passes through connection；
The sand grains motion monitoring system includes high-speed camera, and the high-speed camera is used in experimentation to bend loss
Production monitoring is carried out with the sand grains motion conditions in standpipe section.
3. bend pipe sand plug and standpipe take the experimental provision of sand, its feature in marine oil and gas course of conveying as claimed in claim 2
It is on the supply air line of the air supply system, to be provided with the first valve between the compressor and the surge tank on pipeline,
The second valve, the first pressure transmitter and the gas are provided between the surge tank and the gas flowmeter on pipeline
The 3rd valve is provided between liquid mixer on pipeline；On the supply channel of the water system, the water tank with it is described
The 4th valve is provided between centrifugal pump on pipeline, the 5th is provided with pipeline between the centrifugal pump and the fluid flowmeter
Valve, is provided with the 6th valve on pipeline between the fluid flowmeter and the air and liquid mixer.
4. bend pipe sand plug and standpipe take the experiment dress of sand in the marine oil and gas course of conveying as described in claim any one of 1-3
Put, it is characterized in that, the bend loss, standpipe section and add silo use transparent organic glass pipe.
5. bend pipe sand plug and standpipe take the test method of the experimental provision of sand in a kind of marine oil and gas course of conveying, it is characterized in that,
Study standpipe lifting sand experiment method and step be：
Step one：When initial, the valve of whole experimental provision is all in closed mode, and gassy in whole experimental provision；It is first
First, the 4th valve, the 5th valve and the 6th valve are opened successively, and the water in water tank is successively entered into by centrifugal pump and added
In silo, bend loss and standpipe section；Secondly, the lift of slow regulation centrifugal pump makes the liquid level in standpipe section maintain standpipe section
More than graduated scale and no water is entered into screening plant；Furthermore, the first ball valve of slow regulation makes to add the gas in silo complete
Portion is released, according to whether there is the entrance of gas, selection is opened the first valve, the second valve, the 3rd valve and quickly opened successively
Compressor adjusts tolerance, and the tolerance for having stabilization after a period of time is entered into standpipe section by bend loss；Finally, data are opened
Capture card and high-speed camera, start recording second pressure transmitter, the 3rd pressure transmitter, the 4th pressure transmitter, the 5th
The data of pressure transmitter, the 6th pressure transmitter and the 7th pressure transmitter；
Step 2：First, the second ball valve is opened, the sand grains suspension of the certain solubility of certain particle diameter that will have been configured adds by second
Sand hopper is added in standpipe section, is then turned off the second ball valve, and the motion feelings of standpipe section sand grains are observed by high-speed camera
Condition, when standpipe section bottom is deposited under sand grains, regulation centrifugal pump slowly changes fluid flow, while being adopted by data collecting card
The pressure transmitters of standpipe Duan Shang five, the 6th pressure transmitter, the pressure information of the 7th pressure transmitter and the high speed for collecting are taken the photograph
In graduated scale observation standpipe section on the production monitoring information and reference standpipe section of the grains of sand situation in camera opposition pipeline section
The motion conditions of sand grains, obtain the movement velocity of sand grains by the time of different graduation marks, and then judge sand by measuring sand grains
Whether grain balances in standpipe section；Secondly, lower sample cock, middle sample cock and the upper sample cock in standpipe section are opened respectively
The sand grains of various location enters shape sampling in opposition pipeline section, and diverse location sand grains is in different time solubility in then measuring standpipe section
Change, then its corresponding liquid phase flow rate be the sized particles corresponding critical flow velocity under the concentration；Finally, to Data Data
Pressure signal, the video of high-speed camera production, the sand grains characteristics of motion for measuring and critical flow velocity and adopt that capture card is gathered
The solubility change of collection makes a record.
Step 3：After step 2 terminates, readjust centrifugal pump and increase liquid measure, remaining sand grains in standpipe section is carried out
Go, then repeat step one, open the second ball valve by second plus sand hopper to adding different-grain diameter and solubility in standpipe section
Sand grains carries out next group of experiment, then repeat step two.
6. bend pipe sand plug and standpipe take the experiment side of the experimental provision of sand in marine oil and gas course of conveying as claimed in claim 5
Method, it is characterized in that, in step 3 from standpipe section the remaining sand grains that carries away by the outlet of the medium at the top of standpipe section to
Sieved up to the screening plant on return pipe road, sand grains is separated, current are recycled in returning to water tank.
7. bend pipe sand plug and standpipe take the test method of the experimental provision of sand in a kind of marine oil and gas course of conveying, it is characterized in that,
The method and step of research bend pipe sand plug experiment is：
Step one：When initial, the valve of whole experimental provision is all in closed mode, and gassy in whole experimental provision；It is first
First, the 4th valve, the 5th valve and the 6th valve are opened successively, and the water in water tank is successively entered into plus sand by centrifugal pumping
In tank, bend loss and standpipe section；Secondly, the lift of slow regulation centrifugal pump makes the liquid level in standpipe section maintain the quarter of standpipe section
More than anale settting scale and no water is entered into screening plant；Furthermore, the first ball valve of slow regulation makes to add the gas whole in silo
Release；Finally, data collecting card and high-speed camera, the pressure transmitter of start recording the 4th, the 5th pressure transmitter, the are opened
The data of six pressure transmitters and the 7th pressure transmitter；
Step 2：First, open the second ball valve, by second plus sand hopper to standpipe section in add a certain amount of certain size
Sand grains suspension, until standpipe section bottom bend loss is blocked completely；Secondly, regulation centrifugal pump increase frequency, when on bend loss
When the pressure of trip reaches certain value, the pipeline of bend loss will be opened；Again, regulation centrifugal pump continues to increase fluid flow, sees
Examine pipe diameter change after lower stabilization different in flow rate, and record data；Finally, the data collecting card in whole experiment process is adopted
Second pressure transmitter, the 3rd pressure transmitter, the 4th pressure transmitter, the 5th pressure transmitter, the change of the 6th pressure for collecting
Send device and the pressure information of the 7th pressure transmitter to be analyzed, obtain the critical pressure differential of pipeline opening under the operating mode；
Step 3：Change the particle diameter of sand grains and the amount of sand grains, repeat step one is obtained under different operating modes, and bend pipe sand plug is restarted to be needed
The pressure difference data and the delta data of pipe diameter wanted；
Step 4：After experiment terminates, gas-liquid flow is increased, remaining sand grains is carried out into bend loss.
8. bend pipe sand plug and standpipe take the test method of the experimental provision of sand in a kind of marine oil and gas course of conveying, it is characterized in that,
Study plus the method and step of silo sand plug experiment is：
Step one：When initial, the valve of whole experimental provision is all in closed mode；First, the first ball valve is opened, is added by first
Sand hopper to plus silo in add a certain amount of certain size sand suspension liquid until block plus silo inlet duct；Secondly,
The 4th valve, the 5th valve, the 6th valve and the first valve, the second valve, the 3rd valve are opened successively, and adjust gas-liquid flow
It is certain value, until pipeline is opened and is stablized；Furthermore, pipe diameter is big after stabilization under regulation gas-liquid discharge record difference operating mode
It is small；Finally, second pressure transmitter, the 3rd pressure transmitter, for being collected to the data collecting card in whole experiment process
The pressure information of four pressure transmitters, the 5th pressure transmitter, the 6th pressure transmitter and the 7th pressure transmitter is analyzed,
Obtain maximum differential pressure when pipeline is opened；
Step 2：Change the particle diameter of sand grains and the amount of sand grains, repeat step one is obtained under different operating modes, plus silo sand plug is restarted
The pressure difference data of needs；
Step 3：After experiment terminates, agitator is opened, open air flow quantity, remaining sand grains is cleared out of plus silo.
9. bend pipe sand plug and standpipe take the test method of the experimental provision of sand in a kind of marine oil and gas course of conveying, it is characterized in that,
Research plus silo and the method and step of bend pipe sand plug experiment are：
Simultaneously plus sand plug plug bend loss and plus silo, adjust gas-liquid flow, obtain pressure data and not cocurrent flow when pipeline is opened
Pipe diameter size variation when fast.
10. bend pipe sand plug and standpipe take the experiment dress of sand in the marine oil and gas course of conveying as described in claim any one of 5-9
The test method put, it is characterized in that, the medium used in whole experiment process is water, air and quartz sand.
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| CN201710038894.7A CN106768844B (en) | 2017-01-19 | 2017-01-19 | Experimental device and experimental method for sand blocking of elbow pipe and sand carrying of vertical pipe in marine oil and gas conveying process |
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