CN109238641A - A kind of safe on-line monitoring method of full visualization circulating pipe system flowing - Google Patents
A kind of safe on-line monitoring method of full visualization circulating pipe system flowing Download PDFInfo
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- CN109238641A CN109238641A CN201811105504.4A CN201811105504A CN109238641A CN 109238641 A CN109238641 A CN 109238641A CN 201811105504 A CN201811105504 A CN 201811105504A CN 109238641 A CN109238641 A CN 109238641A
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- module
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
Abstract
The invention discloses a kind of full visualization circulating pipe systems to flow safe on-line monitoring method, belongs to circulation line flowing safeguard technology field, includes the following steps: S1: determining the working fluid and working condition required for experimental study；S2: system is subjected to vacuumize process, priming module；S3: starting pressure stabilizing gas injection module；S4: starting multiphase loop module；S5: start-up temperature control module；S6: carrying out realtime graphic on-line monitoring by photographic device, and the on-line monitoring of blocking position and degree is carried out by acoustic wave device, and data acquisition and analysis module acquire the monitoring data of photographic device and acoustic wave device feedback in real time and be compared；S7: start back pressure control module and separate and collect module.Problem in science in terms of the present invention is suitable for flowing safety guarantee to circulation line carries out system experimentation research, and the detection convenient for transporting pipeline for practical oil gas provides technical support.
Description
Technical field
The present invention relates to circulation lines to flow safeguard technology field, and in particular to a kind of full visualization circulation line system
System flows safe on-line monitoring method.
Background technique
The exploitation gradually concern by countries in the world in recent years in deep water hydrocarbon field, its special environmental condition due to deep water
So that its pipeline construction conditions is especially harsh.Therefore, the pipeline flowing safety guarantee problem in deep water hydrocarbon transport process becomes
The important limiting factor of Marine oil and gas resource exploitation.Research institution of various countries has built experiment circulation line and has carried out flowing safety guarantee
Experimental study, including French IFP test pipeline, and pipeline is tested by Mobil Oil Corporation, and University of Tulsa tests pipeline, University of West Australia
Pipeline is tested, pipeline and Univ Heriot Watt's experiment pipeline etc. are tested by China University Of Petroleum Beijing.These experiment pipelines can convection current
The circulation line that the problem in science of dynamic secure context is studied, but related to can only realize partial visual, and can only be into
The analysis of the experimental datas such as the conventional temperature, pressure of row can not carry out true image analysis to Hydrate Plugging process, can not
Comprehensive technical support is provided for the detection that practical oil gas transports pipeline.
Summary of the invention
To solve defect existing in the prior art, the present invention provides a kind of full visualization circulating pipe system flowing safety
On-line monitoring method is convenient for suitable for carrying out system experimentation research to the problem in science in terms of circulation line flowing safety guarantee
The detection for transporting pipeline for practical oil gas provides technical support.
The present invention is that technical solution used by solving its technical problem is: a kind of full visualization circulating pipe system flowing
Safe on-line monitoring method, includes the following steps:
S1: the working fluid and working condition required for experimental study are determined；
S2: system is subjected to vacuumize process, it is fixed to carry out liquid phase to full visualization circulation line module for priming module
Amount injection；
S3: starting pressure stabilizing gas injection module carries out the injection of gas phase constant pressure quantitative to full visualization circulation line module；
S4: starting multiphase loop module makes system stable operation；
S5: start-up temperature control module carries out temperature control to system；
S6: blocking process is generated to hydrate by photographic device and carries out realtime graphic on-line monitoring, passes through acoustic wave device
The on-line monitoring of blocking position and degree is carried out to Hydrate Plugging region, data acquisition and analysis module acquire camera shooting dress in real time
It sets the monitoring data with acoustic wave device feedback and is compared；
S7: starting back pressure control module and separate and collect module, carries out gas-liquid separation and recycling and reusing to the working fluid,
Or carry out environmentally friendly post-processing.
Further, in the step S1 it needs to be determined that the working fluid and working condition include: liquid phase in circulation line
With the ingredient of gas phase and required ratio, circulate during real-time traffic and the temperature and pressure during circulating
Condition.
Further, the liquid injection module can realize that the mixing of two kinds of experimental configuration solution is quantitatively injected.
It further, is that vacuumize process is carried out to system by vacuum pump in the step S2.
The beneficial effects of the present invention are: the present invention can system comprehensively to flowing safety guarantee in terms of experiment carry out science
Research, the laying for practical seafloor gas seepage provide theories integration；It can be stifled to hydrate by photographic device and acoustic wave device
Plug process carries out true image analysis without being limited to the analysis of experimental data to temperature and pressure；Side provided by the invention
Method, it is easy to operate, it should be readily appreciated that.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, right in the following with reference to the drawings and specific embodiments
The present invention is described in detail.
Embodiment 1
In the present embodiment, a whole set of experimental system design is divided into eight module sections, including: circulation pipe is visualized entirely
Road module, multiphase loop module, liquid injection module, pressure stabilizing gas injection module, back pressure control module, separates and collects temperature control modules
Module, data acquisition and analysis module.To realize the real time on-line monitoring in full visualization circulation line flow process, in circulation
Temperature and pressure sensor are provided with for each section on pipeline；In being provided with acoustic wave device on circulation line；In erection outside circulation line
There is photographic device to realize real time monitoring function.
A kind of safe on-line monitoring method of full visualization circulating pipe system flowing, specifically includes the following steps:
S1: experiment condition design is carried out according to the problem in science of required realization, it is thus necessary to determine that liquid phase is gentle in circulation line
The ingredient of phase and required ratio, circulate during real-time traffic, circulate during temperature and pressure condition.Tool
Steps are as follows for body operating condition design: it is determined according to the problem of research belong to oil gas water three phase flowing or gas-water phases flowing first,
Secondly, determining that gas-phase working medium is mixed gas, methane or carbon dioxide according to the problem of being studied, liquid phase working fluid is water
Or oil water mixture, the working medium ingredient and ratio of this research are according to the practical proportion in oil gas transport process on Practical Project
Regulated and controled；After determining gas-phase working medium, according to the temperature, pressure phase equilibrium line that gas-phase working medium hydrate generates come further
Determine experiment working condition, guarantee experiment temperature, pressure working condition its generate hydrate condition phase equilibrium line it
On, that is, guarantee that hydrate can be generated under the conditions of experiment condition.Preferably, determine that liquid phase is that water ratio is in this example
60%, gas phase is that methane gas ratio is 40%, circular flow 25m3/ h, environment temperature are 4 DEG C, loine pressure 5MPa.
S2: starting vacuum pump will be pumped into the state close to vacuum, pass through note according to determining liquid phase injection condition in pipeline
Liquid module first quantifies water in the full visualization circulation line module of injection, stops water filling when the volume of water in pipeline accounts for 60%
Process.
S3: constant pressure is infused after methane gas is pressurized to 5MPa by pressure stabilizing gas injection module according to determining gas phase injection condition
Enter in full visualization circulation line module, stop methane gas injection process when injection rate reaches manifold volume 40% and starts
Automatic constant-pressure gas compensation function.
S4: after the completion of water and methane gas injection, starting multiphase loop module makes the flow of gas-liquid mixed phase reach 25m3/
H and stable operation.
S5: in pipeline to be recycled after stable operation, environment temperature is slowly dropped to experimental temperature by start-up temperature control module
4 DEG C, and system is kept to stablize continuous service.
S6: during system stable operation, methane gas and water can generate hydrate first in the environment of high pressure low temperature
Particle and gradually aggregation sedimentation are finally until blocking circulation line, can capture entire hydration by photographic device in this process
Object blocks the realtime graphic of process for carrying out the experimental study in terms of blocking mechanism；When system generates hydrate aggregation blocking
Afterwards, the acoustic signals that block part can be carried out by acoustic wave device are analyzed；Obtained Hydrate Plugging position is analyzed by signal
Setting can compare and analyze with blocked state with image Hydrate Plugging position obtained and state, to improve in hydrate
Block the Acoustic sounding of aspect.In the entire experiment process, it can be acquired by data and analysis module, real-time acquisition are entire
Temperature and pressure experimental data information in system, to carry out conventional Hydrate Plugging pressure difference model prediction.
After S7: one group of experimentation, need to start the water and methane progress emission treatment in circulation line at this time
Back pressure control module realizes that stablizing for system decomposes outflow, while starting separates and collects module and the mixed phase of water and methane is carried out gas
Liquid separation, and the methane gas isolated is collected, it can choose at this time and methane gas be pressurized again and is led again
Enter to pressure stabilizing gas injection module or is directly burnt up methane to prevent greenhouse gases by separating and collecting the methyl hydride combustion device of module
It is discharged into atmospheric environment.
Preferably, in the present embodiment, liquid injection module is made of two NaOH solution tank NaOHs and matched reciprocating pump and valve, can be real
The mixing of existing two kinds of experimental configuration solution is quantitatively injected；Straight pipeline used in full visualization circulation line module is high light transmission
Rate, high pressure resistant, corrosion resistant lucite tube, bend pipe used is high pressure resistant, corrosion resistant stainless steel tube, and pipe bent position is provided with
Visual windows；Pressure stabilizing gas injection module is made of experiment gas cylinders group, pressure stabilizing surge tank and matched booster pump and pneumatic operated valve, can be real
The constant pressure quantitative injection of existing experimental gas, and the function of automatic constant-pressure tonifying Qi can be realized with the consumption of gas in experimentation
Energy；Separate and collect module be made of gas collection tank and its latter linked gentle volumetric combustion device of pressurization cycle pipeline, it can be achieved that
The separation of gas-liquid two-phase, and experimental gas can be carried out to recycling and reusing or burnt up to prevent greenhouse gases to be discharged into greatly
Gas；Photographic device and the obtained experimental data information of acoustic wave device carry out integration point by data acquisition and analysis module
Analysis.
Preferably, in the present embodiment, temperature control modules main body be made of a step-by-step movement cryogenic thermostat room, it can be achieved that-
20 DEG C~40 DEG C of temperature control is to simulate the environment temperature of practical seafloor gas seepage；Multiphase loop module main body is by a single screw rod
Pump is constituted, it can be achieved that gas-liquid mixed phase recycles, and guarantee maximum stream flow is 25m3/h。
Full visualization circulating pipe system provided by the invention flows safe on-line monitoring method, can the comprehensive convection current of system
Experiment in terms of dynamic safety guarantee carries out scientific research, and the laying for practical seafloor gas seepage provides theories technique support.This
The high pressure that invention realizes circulating line visualizes entirely, can carry out true image analysis rather than office to Hydrate Plugging process
It is limited to the analysis of experimental data to temperature and pressure, has used the Acoustic sounding in forward position, it can be received by acoustic wave device
The application that acoustic signals analysis Hydrate Plugging position and state are Acoustic sounding in practical pipeline provides technology branch
It holds.Working medium injection and discharge system be simple and efficient, and pay attention to working medium recycle and environment protection emission.All systems use mould
Blockization design has experimental system operation succinct, for ease of maintenaince the characteristics of.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art within the technical scope of the present disclosure, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of full visualization circulating pipe system flows safe on-line monitoring method, which comprises the steps of:
S1: the working fluid and working condition required for experimental study are determined；
S2: system is subjected to vacuumize process, priming module carries out liquid phase to full visualization circulation line module and quantitatively infuses
Enter；
S3: starting pressure stabilizing gas injection module carries out the injection of gas phase constant pressure quantitative to full visualization circulation line module；
S4: starting multiphase loop module makes system stable operation；
S5: start-up temperature control module carries out temperature control to system；
S6: blocking process is generated to hydrate by photographic device and carries out realtime graphic on-line monitoring, by acoustic wave device to water
Close the on-line monitoring that object blocking region carries out blocking position and degree, data acquisition and analysis module acquire in real time photographic device and
The monitoring data of acoustic wave device feedback are simultaneously compared；
S7: starting back pressure control module and separate and collect module, carries out gas-liquid separation and recycling and reusing to the working fluid, or
Carry out environmentally friendly post-processing.
2. a kind of full visualization circulating pipe system according to claim 1 flows safe on-line monitoring method, feature
Be, in the step S1 it needs to be determined that the working fluid and working condition include: liquid and gas in circulation line ingredient
And required ratio, circulate during real-time traffic and the temperature and pressure condition during circulating.
3. a kind of full visualization circulating pipe system according to claim 1 flows safe on-line monitoring method, feature
It is, the liquid injection module can realize that the mixing of two kinds of experimental configuration solution is quantitatively injected.
4. a kind of full visualization circulating pipe system according to claim 1 flows safe on-line monitoring method, feature
It is, is that vacuumize process is carried out to system by vacuum pump in the step S2.
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Cited By (1)
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| CN109915125A (en) * | 2019-03-27 | 2019-06-21 | 西南石油大学 | A kind of snakelike horizontal well air water, oil-water two-phase flow imitative experimental appliance and method |
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Application publication date: 20190118 |