CN207620776U - Gas hydrates pilot production simulator - Google Patents
Gas hydrates pilot production simulator Download PDFInfo
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- CN207620776U CN207620776U CN201721648771.7U CN201721648771U CN207620776U CN 207620776 U CN207620776 U CN 207620776U CN 201721648771 U CN201721648771 U CN 201721648771U CN 207620776 U CN207620776 U CN 207620776U
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Abstract
The utility model is related to a kind of gas hydrates pilot production simulators, the device includes that emulation experiment well, electric submersible pump hoisting system, stratum simulation injection distribution system, separate measurement system and monitoring system, emulation experiment well include the first oil pipe, the second oil pipe and electric submersible pump hoisting system Set under a well；Stratum simulation injection distribution system includes air compression injection device and water sand mixed injection device, and air compression injection device is connect with the first oil pipe, and water sand mixed injection device is connect with the second oil pipe；Separate measurement system includes desander, moisture separator and flowmeter, the fluid outlet of electric submersible pump hoisting system is connected with desander, desander is connect with moisture separator, the gaseous phase outlet of moisture separator is connect with air compression injection device, and the liquid-phase outlet of moisture separator is connect with water sand mixed injection device.The device can carry out artificial lift mode and the operation parameter optimization research of pit shaft Three-phase Flow, and relevant parameter and technical support are provided for hydrate pilot production.
Description
Technical field
The utility model belongs to Unconventional gas exploitation engineering field, and in particular to a kind of gas hydrates pilot production mould
Quasi- device.
Background technology
Gas hydrates are a kind of non-stoichiometry caged formed under high pressure, cryogenic conditions by water and natural gas
Crystalline solid is distributed mainly in the epeiric deposit in land permafrost area and ocean, has that stock number is big, energy is close
Degree is high, buries the features such as shallow, distribution is wide, it is generally considered 21 century most potential take over the energy.80 years 20th century
Since generation, the developed countries such as the U.S., Canada, Japan, South Korea give great attention in terms of the research of gas hydrates；
Consider for energy strategy angle, efficiently extracting natural gas hydrate is also included in Long-and Medium-term Development planning, and 2017 5 by China
The moon has carried out the pilot production for the first time of Gas Hydrate In Sea Areas in South Sea god fox area, achieves duration longest, aerogenesis total amount
The multinomial important breakthrough achievement such as maximum, steady air current, Environmental security, creates aerogenesis duration and the world record of total amount.
It can occur largely to decompose during exploitation of gas hydrates, the mechanical property containing hydrate deposit will be generated
Adverse effect, and then induce borehole well instability, shake out, formation collapse, the submarine landslide even Geological Hazards such as tsunami.International day
The all previous pilot production experience of right gas hydrate shows that the interaction relation of formation sand production and artificial lift mode is to influence hydrate to hide energy
The key scientific problems of no high-efficiency mining.Therefore, before carrying out hydrate commercialization exploitation, pass through the technology hand of experimental simulation
Section, the pit shaft studied under artificial lift shake out property, understanding gas and water, sand Three-phase Flow rule, for formation sand production prevention, people
Work artificial lifting way and pilot production law study etc. have realistic meaning.But existing analogue experiment installation is confined to interior, model more
Scale is small, and experiment condition also has larger difference with reservoir, cannot truly reflect the hydrate pilot production rule in actual deposition object.
How under the conditions of outdoor emulation experiment, to water in gas hydrates pilot production, gas, sand Three-phase Flow artificial lift process and
Operating parameter optimizes research, establishes safe and efficient engineering technology system, is problem to be solved in actual production.
For the above situation, it is necessary to a kind of gas hydrates pilot production simulator based on emulation experiment well is designed,
Pit shaft gas and water, the artificial lift of sand Three-phase Flow and operation parameter optimization research are carried out, relevant parameter is provided for hydrate pilot production
And technical support.
Invention content
To overcome existing simulator experiment condition to differ greatly with reservoir, cannot really reflect in actual deposition object
The defect of hydrate pilot production rule, the utility model provide a kind of gas hydrates pilot production simulation dress based on emulation experiment well
It sets, can need to control the artificial lift mode and operating parameter of gas hydrates pilot production pit shaft Three-phase Flow according to research
Primary condition is arranged for emulation experiment in system.
In order to achieve the goal above, the utility model proposes the following technical solutions：
A kind of gas hydrates pilot production simulator, including emulation experiment well, electric submersible pump hoisting system, stratum simulation match
Injection system, separate measurement system and monitoring system,
The emulation experiment well includes pit shaft, the first oil pipe, the second oil pipe and the electric submersible pump lifting system being arranged in pit shaft
System Set under a well；
The stratum simulation injection distribution system includes air compression injection device and water-sand mixed injection device, air compression
Injection device is connect with the first oil pipe, and water-sand mixed injection device is connect with the second oil pipe；
The separate measurement system includes desander, moisture separator and flowmeter, and the fluid of electric submersible pump hoisting system goes out
Mouth is connected with desander, and desander is connect with moisture separator, and gaseous phase outlet and the air of moisture separator compress injection device
Connection, the liquid-phase outlet of moisture separator are connect with water-sand mixed injection device；The gaseous phase outlet and liquid phase of moisture separator go out
It is respectively provided with flowmeter at mouthful；
The monitoring system is separately connected with electric submersible pump hoisting system and stratum simulation injection distribution system.
Further, air compression injection device includes air compressor and air accumulator, air accumulator and the first oil pipe
Connection.
Further, the water-sand mixed injection device includes water tank, sand reservoir box and blending bin, water tank and storage sand
Case is connect with blending bin respectively, and blending bin is connect with the first oil pipe, and injection pump is arranged between blending bin and the first oil pipe.
Further, orifice flowmeter is arranged in the gaseous phase outlet of the moisture separator, and Electromagnetic Flow is arranged in liquid-phase outlet
Meter.
Further, the well bore of the emulation experiment well opens conserved structure for one.
Further, doughnut-shaped steel plate is set at the well head of the emulation experiment well.
Further, the entrance of first oil pipe and the second oil pipe is obliquely installed.
Further, the emulation experiment well includes the surface pipe and production casing being arranged in pit shaft, the first oil pipe
It is set to surface pipe and production casing annular space with the second oil pipe.
Compared with prior art, the beneficial effects of the utility model are：It can carry out the artificial act of pit shaft Three-phase Flow
The mode of liter and operation parameter optimization research, relevant parameter and technical support are provided for hydrate pilot production.It specifically includes：
1. can be with real-time control gas and water, the flow of sand three-phase fluid；
2. electric submersible pump lifting can be simulated and gas separation process, optimal gas separative efficiency reach 95% or more；
3. the operating mode of electric submersible pump can be monitored and be automatically adjusted, is adjusted into line frequency according to operating status, optimize electric submersible pump
Discharge capacity, lift and the efficiency of gas separation, situations such as avoiding the occurrence of gas lock；
4. surface separation and metering can be carried out to the water of artificial lift to ground, gas, sand three-phase fluid；
5. the stream pressure of underground, pump discharge pressure, shaft bottom stream temperature, motor winding temperature, mechanical oscillation, leakage electricity can be detected
The operating parameters such as stream, operating voltage；By controlling these parameters, run-limiting and the alarm of electric submersible pump are set to extend electric submersible pump
Service life.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment gas hydrates pilot production simulator.
1, air compressor；2, air accumulator；3, desander；4, moisture separator；5, orifice flowmeter；6, Electromagnetic Flow
Meter；7, baker；8, water tank；9, sand reservoir box；10, water-sand blending bin；11, injection pump；12, surface pipe；13, first is small
Oil pipe；14, production casing；15, the second little oil pipe；16, electric submersible pump hoisting system；17, doughnut-shaped steel plate；18, artificial bottom of a well；19、
Monitoring system；20,21,22,23, regulating valve.
Specific implementation mode
In order to which the above objects, features, and advantages of the utility model are more clearly understood, below in conjunction with the accompanying drawings and
Embodiment is described further the utility model.It should be noted that in the absence of conflict, embodiments herein and
Feature in embodiment can be combined with each other.
The utility model provides a kind of gas hydrates pilot production simulator, which includes that emulation experiment well, electricity are latent
Pump hoisting system and ground testing system.
Emulation experiment well is made of well completion technique tubular pile and wellhead assembly two parts.
1. well structure design takes one to open conservative casing programme, ensures top broken ground wellbore construction safety, uses
The drill bit of specific dimensions is drilled into fixed well depth, and tripping in surface pipe is cemented the well using insertion, and annular space cement, which returns, drains into ground；Under
Enter internal layer production casing, hangs well head, down-hole centralizing；In 2 little oil pipes of casing and casing annulus tripping in, it is respectively used to sand liquid
Mixed phase and gas phase are input to shaft bottom.Production casing reserves the bottom gap of surface pipe and production casing down toward constant depth, uses
In simulation underground three-phase fluid by shaft bottom to moving uphole.
2. wellhead assembly designs, casing and casing annulus well head install doughnut-shaped steel plate, are used for suspension sleeve and sealing sleeve pipe
2 little oil pipes of annular space, tripping in pass through doughnut-shaped steel plate and seal, cannula tip install casing head, for be located tubing hanger and
Seal Oil covers annular space, finally installs oil pipe four-way, is connect with metering manifold.
Emulation experiment well can be used for simulating underground Three-phase Flow technique.It is specific as follows：Ground mixed liquor (sand, water) and gas
It is transported to shaft bottom with production casing annular space by surface pipe by 2 little oil pipes of prepackage respectively, dduring test, ground note
Enter pump and air compressor continues mixing liquid and gas being uninterruptedly pumped into shaft bottom, entire test system is kept to stablize cycle.
2 little oil pipes of prepackage have both sand washing function, terminate in test, increase the discharge capacity of injection pump, can be to the residual sand grains in shaft bottom
Reverse circulation washing is carried out, takes ground out of.
Emulation experiment well is also used for simulation shaft bottom sand washing process, it is desirable that the underground entrance of injection allocation subsystem and artificial bottom of a well it
Between stop sand setting pocket, injection subsystem underground entrance avoids being open downwards as possible.
Electric submersible pump hoisting system is by electric submersible pumping system Set under a well, ground electrical subsystem, sensing subsystem and power electric
Four part of cable forms.
1. electric submersible pumping system Set under a well is detached by pressure short circuit, pump discharge, 400 serial electric submersible pumps, 400 serial gas
Device, protector, motor, motor leading cable and installation consumptive material are constituted.When Set under a well is mounted on pit shaft, being powered will realize
It detaches gas, lifting liquid, reduce the functions such as pressure.
2. ground electrical subsystem is made of frequency converter and transformer, mainly consider and Set under a well and sensing when selection
Device it is mating, power to Set under a well and sensor, by changing the running speed of FREQUENCY CONTROL underground electric submersible pump, realization changes
The target of varying flow rate and lift；It also needs to consider that alarming value can be arranged in frequency conversion system, including various control pattern, processing gas lock,
Situations such as holddown.
3. the main parameter for considering to detect, read underground of the selection of sensor subsystem, plays monitoring electric submersible pump operation
The effect of state.
4. power cable is mainly used for being powered to Set under a well and sensor.
Ground testing system includes but is not limited to stratum simulation injection distribution system, separate measurement system and monitoring system three
Point.
1. stratum simulates injection distribution system and carries out flow control and meter to three-phase fluid by compressor, injection pump and regulating valve
Amount achievees the purpose that the proportioning for adjusting gas liquid ratio, sand.Wherein, water-sand blending bin is added by sand reservoir box in sand, and water sand mixture is logical
It crosses injection pump supercharging and enters shaft bottom；Air enters shaft bottom after being compressed by compressor；Water, gas, sand additional proportion can quantify
Regulation and control.
2. separate measurement system is after fluid lift to well head, water, gas, sand three-phase fluid are detached, measured, is returned
Return storage tank.Specifically：Three-phase fluid (water, gas, sand) flows into desander, carries out desanding processing；Fluid after desanding flows into
The moisture separator of next stage carries out water, gas two-phase laminated flow, the water phase outlet setting electromagnetic flowmeter of moisture separator, and gas phase goes out
Mouth setting orifice flowmeter, respectively measures water phase and gas phase.The sand isolated enters collecting tank, using the side weighed
Formula is measured, and injection distribution system is simulated on the gentle stratum that returns respectively of the water isolated.
3. monitoring system is used to detect the operating mode of electric submersible pump, test data is recorded；Control piper simulates different test wrappers
The automatic switch of valve is realized in border；The monitoring of test loop pressure and temp；Monitor the working condition of electric submersible pump and adjustment；In real time
And the monitoring and inquiry of history working curve.Bottom pressure, Pump Suction Nozzle can be directly or indirectly obtained by Monitor And Control Subsystem
Pressure, Pump Suction Nozzle temperature, the flow for the three-phase fluid for being pumped into/pumping out, pump discharge pressure, motor temperature, the shake of the directions unit XY
All kinds of parameters such as dynamic, pump lift, pumpage, gas separative efficiency, the efficiency of pump.
Embodiment
The present embodiment provides a kind of gas hydrates pilot production simulator, structure is as shown in Figure 1, include emulation experiment
Well, electric submersible pump hoisting system 16, stratum simulation injection distribution system, separate measurement system and monitoring system 19.
The present embodiment emulation experiment well is the straight well of a bite well depth 200m, takes one to open conservative casing programme, selects Ф
457.2mm (18 ") drill bit is drilled into well depth 200m, tripping in Ф 406.4mm (16 ") surface pipes 12 and Ф 244.5mm (9-5/8 ")
Internal layer production casing 14, in surface pipe 12 and 14 annular space of internal layer production casing setting 1-1/2 " the first little oil pipe 13 and 2 " second
Little oil pipe 15.Production casing 14 reserves the bottom gap of surface pipe 12 and production casing 14 as artificial bottom of a well down toward 190m
18。
Internal layer production casing 14 and the annular steel 17 of casing annulus well head installation, for hanging internal layer production casing 14 and sealing
Casing annulus, tripping in the first little oil pipe 13 and the second little oil pipe 15 pass through doughnut-shaped steel plate 17 and seal, in cannula tip installation set
Tube head covers annular space for being located tubing hanger and Seal Oil, finally installs oil pipe four-way, connect with metering manifold.
Electric submersible pump hoisting system 16 is by electric submersible pumping system Set under a well, ground electrical subsystem, sensing subsystem and power
Four part of cable forms.Electric submersible pumping system Set under a well is mounted in experiment well production casing 14.Electrical subsystem is by frequency converter
It forms, powers to Set under a well and sensor, and the running speed of FREQUENCY CONTROL underground electric submersible pump can be changed with transformer.It passes
Sensor subsystem is used to monitor the effect of electric submersible pump operating status.Power cable be mainly used for Set under a well and sensor into
Row power supply.
Stratum simulation injection distribution system includes air compression injection device, water-sand mixed injection device.Air compression injection dress
It sets including air compressor 1 and air accumulator 2, air accumulator 1 is connect with the first oil pipe 15, is set between air accumulator 2 and the first oil pipe 15
Set regulating valve 22.Water-sand mixed injection device includes water tank 8, sand reservoir box 9 and water-sand blending bin 10, water tank 8 and storage sand
Case 9 is connect with water-sand blending bin 10 respectively, and water-sand blending bin 10 is connect with the first oil pipe 13, blending bin 10 and the first oil pipe 13
Between be arranged injection pump 11, between injection pump 11 and the first oil pipe 13 be arranged regulating valve 21.
Separate measurement system includes desander 3, moisture separator 4 and flowmeter, and the fluid of electric submersible pump hoisting system 16 goes out
Mouth is connected with desander 3, and desander 3 is connect with moisture separator 4, and the gaseous phase outlet of moisture separator 4 is connect with air accumulator 2,
The liquid-phase outlet of moisture separator 4 is connect with water tank 8；Orifice flowmeter 5, liquid phase is arranged in the gaseous phase outlet of moisture separator 4
Outlet setting electromagnetic flowmeter 6.
Monitoring system 19 is separately connected with electric submersible pump hoisting system 16 and stratum simulation injection distribution system.
Gas hydrates pilot production analogy method, first, all pipelines of inspection gas hydrates pilot production simulator,
Whether circuit connection, regulating valve are normal, system for monitoring opening 19, initial parameter are arranged for outdoor emulation experiment, such as water, gas, sand
Flow, gas liquid ratio, the proportioning of sand, injection rate of three-phase fluid etc..Start stratum and simulates injection distribution system, the pressure in air accumulator 2
Contracting air injects artificial bottom of a well 18 by the first oil pipe 15, and the water in water tank 8, the sand in sand reservoir box 9 enter mixing in proportion
It is mixed in tank 10, artificial bottom of a well 18 is injected by the second oil pipe 13 after the supercharging of injection pump 11；Electric submersible pump hoisting system 16 is by people
Water, gas, the sand three-phase mixture in work shaft bottom are lifted to well head, and flowing into desander 3 by pipeline carries out desanding, after desanding
Fluid flows into moisture separator 4 and carries out water, gas two-phase laminated flow, and acquires gas phase flow rate data and water phase data on flows, and gas returns
Air accumulator 2 is returned, water returns to water tank 8, and sand enters baker 7, weighs after drying, measures sand production rate, evaluates the lifting of electric submersible pump
Efficiency, gas-liquid separation efficiency and prop-carrying capacity.By changing the operating parameter of pilot production simulator, repeats the above steps, pass through
Monitoring system 19 monitors and analyzes the history working curve changing rule under the influence of different parameters.
Embodiment described above is only that preferred embodiments of the present invention are described, not new to this practicality
The range of type is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this reality
The various modifications made with novel technical solution and improvement should all fall into the protection model of the utility model claims book determination
In enclosing.
Claims (8)
1. a kind of gas hydrates pilot production simulator, which is characterized in that including emulation experiment well, electric submersible pump hoisting system,
Simulate injection distribution system, separate measurement system and monitoring system in stratum；
The emulation experiment well includes pit shaft, the first oil pipe, the second oil pipe and the electric submersible pump hoisting system well being arranged in pit shaft
Lower unit；
The stratum simulation injection distribution system includes air compression injection device and water-sand mixed injection device, air compression injection
Device is connect with the first oil pipe, and water-sand mixed injection device is connect with the second oil pipe；
The separate measurement system includes desander, moisture separator and flowmeter, the fluid outlet of electric submersible pump hoisting system with
Desander is connected, and desander is connect with moisture separator, and the gaseous phase outlet of moisture separator is connect with air compression injection device,
The liquid-phase outlet of moisture separator is connect with water-sand mixed injection device；At the gaseous phase outlet and liquid-phase outlet of moisture separator
It is respectively provided with flowmeter；
The monitoring system is separately connected with electric submersible pump hoisting system and stratum simulation injection distribution system.
2. simulator according to claim 1, which is characterized in that the air compression injection device includes air compression
Machine and air accumulator, air accumulator are connect with the first oil pipe.
3. simulator according to claim 2, which is characterized in that the water-sand mixed injection device include water tank,
Sand reservoir box and blending bin, water tank and sand reservoir box are connect with blending bin respectively, and blending bin is connect with the first oil pipe, blending bin and the
Injection pump is set between one oil pipe.
4. simulator according to claim 3, which is characterized in that orifice plate is arranged in the gaseous phase outlet of the moisture separator
Electromagnetic flowmeter is arranged in flowmeter, liquid-phase outlet.
5. according to claim 1-4 any one of them simulators, which is characterized in that the well bore of the emulation experiment well is one
Open conserved structure.
6. according to claim 1-4 any one of them simulators, which is characterized in that set at the well head of the emulation experiment well
Set doughnut-shaped steel plate.
7. according to claim 1-4 any one of them simulators, which is characterized in that first oil pipe and the second oil pipe
Entrance is obliquely installed.
8. according to claim 1-4 any one of them simulators, which is characterized in that the emulation experiment well includes that setting exists
Surface pipe in pit shaft and production casing, the first oil pipe and the second oil pipe are set to surface pipe and production casing annular space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721648771.7U CN207620776U (en) | 2017-11-30 | 2017-11-30 | Gas hydrates pilot production simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721648771.7U CN207620776U (en) | 2017-11-30 | 2017-11-30 | Gas hydrates pilot production simulator |
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| CN207620776U true CN207620776U (en) | 2018-07-17 |
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ID=62824891
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780888A (en) * | 2017-11-30 | 2018-03-09 | 青岛海洋地质研究所 | Gas hydrates pilot production analogue means and method |
| CN109707377A (en) * | 2019-01-28 | 2019-05-03 | 中国地质大学（武汉） | Hydrate exploitation reservoir response and integrated simulation experiment system and method for shaking out |
| CN111502567A (en) * | 2020-04-15 | 2020-08-07 | 常州大学 | Underground rotational flow sand discharge experiment device and measurement method for sand-containing geothermal well |
-
2017
- 2017-11-30 CN CN201721648771.7U patent/CN207620776U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780888A (en) * | 2017-11-30 | 2018-03-09 | 青岛海洋地质研究所 | Gas hydrates pilot production analogue means and method |
| CN107780888B (en) * | 2017-11-30 | 2023-08-15 | 青岛海洋地质研究所 | Natural gas hydrate test production simulation device and method |
| CN109707377A (en) * | 2019-01-28 | 2019-05-03 | 中国地质大学（武汉） | Hydrate exploitation reservoir response and integrated simulation experiment system and method for shaking out |
| CN111502567A (en) * | 2020-04-15 | 2020-08-07 | 常州大学 | Underground rotational flow sand discharge experiment device and measurement method for sand-containing geothermal well |
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