CN208520832U - A kind of experimental provision for simulating gas hydrates counterflush drilling flow field change - Google Patents
A kind of experimental provision for simulating gas hydrates counterflush drilling flow field change Download PDFInfo
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- CN208520832U CN208520832U CN201820298332.6U CN201820298332U CN208520832U CN 208520832 U CN208520832 U CN 208520832U CN 201820298332 U CN201820298332 U CN 201820298332U CN 208520832 U CN208520832 U CN 208520832U
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- ball valve
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- flow field
- landwaste
- water
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Abstract
The utility model relates to a kind of experimental provision of simulation gas hydrates counterflush drilling flow field change in gas hydrates drilling technology field, it mainly by video camera, computer monitoring system, pressure sensor, can visible joint A, mixture outlet, mixture intake, inner tube, outer tube, landwaste funnel, ball valve A, fluid flowmeter, water pump, ball valve B, gas flowmeter, electromagnetic air pump, water storing tank, powder collection bucket, small-sized electrical heating drier, gas-liquid-solid three-phase separator, hanging ring, drill bit, nylon landwaste layer and can visible joint B form.Water storing tank is successively connected with water pump, fluid flowmeter, ball valve A, landwaste funnel and mixture intake, and electromagnetic air pump is in parallel with the water of water storing tank outflow after being successively connected with gas flowmeter, ball valve B.The utility model simulation effect is good, can simulate flow field change rule during counterflush drilling well.
Description
Technical field
The utility model relates to a kind of simulation gas hydrates reverse circulation drillings in gas hydrates drilling technology field
The experimental provision of well flow field change.
Background technique
Counterflush drilling technology, which refers to, injects drilling fluid in double wall drill tool inner and outer pipes annular space by fluid injection connector, flows to double
Layer drilling rod bottom, the landwaste broken off is entered inside drilling rod by the through-hole in drill bit, ground is finally returned out inside drilling rod.
Gas hydrates counterflush drilling is a kind of New well drilling mode, and drilling mode is strong with cutting carring ability in this, reduces
Compacted fill ground reduces or eliminates drilling fluid leakage, reduces the advantages that pump is lost, well control is flexible.But for this novel drilling well
Mode has many applications in gas drilling, does not have substantially for exploitation of gas hydrates application.Therefore, have for this
How the drilling mode of more advantages is applied to this special energy extraction of gas hydrates it is necessary to carry out experimental study, right
It is in demand for gas hydrates Efficient Development；If can invent in laboratory, a kind of simulation gas hydrates are counter to be followed
The experimental provision of trepan well flow field change to counterflush drilling application on site when the variation of entire flow field flow study, this will
Scene is had a very important significance using reacting cycle safety drilling.
Summary of the invention
The utility model aim is: providing a kind of experiment dress for simulating gas hydrates counterflush drilling flow field change
It sets.
The technical scheme adopted by the utility model is
A kind of experimental provision for simulating gas hydrates counterflush drilling flow field change of the utility model, mainly by imaging
Machine, computer monitoring system, pressure sensor, can visible joint A, mixture outlet, mixture intake, inner tube, outer tube, landwaste
It is funnel, ball valve A, fluid flowmeter, water pump, ball valve B, gas flowmeter, electromagnetic air pump, water storing tank, powder collection bucket, small
Type electrical drying device, gas-liquid-solid three-phase separator, hanging ring, drill bit, nylon landwaste layer and can visible joint B composition, water storing tank
Successively be connected with water pump, fluid flowmeter, ball valve A, landwaste funnel and mixture intake, electromagnetic air pump successively with gas stream
Meter, ball valve B are in parallel with the water of water storing tank outflow after being connected.Can visible joint A and can visible joint B set using openable formula
Meter, nylon landwaste layer is that nylon particles and cutting grain are mixed according to 1:1, and two kinds of particles average grain diameter is 2mm, long
Degree is 0.2m, and the cutting grain in landwaste funnel is partial size 1mm.Ball valve used in experimentation is all the ball of same size
Valve, can visible joint A left part, can the lower part visible joint B be separately installed with pressure sensor, for monitoring whole experiment process
Pressure changing in middle pit shaft；Outer tube and inner tube are made using transparent acrylic glass, pressure-bearing 1MPa, and
Outer tube is the round tube of diameter 215.9mm, and diameter of inner pipe is the round tube of 127mm.Simulation process middle external tube is tested in entire reacting cycle
The casing under actual condition is simulated, inner tube simulates the drilling rod under actual condition, and nylon landwaste layer, which simulates to bore under actual condition, meets day
Right gas hydrate layer, nylon particles simulate the gas hydrate particle under actual condition, and cutting grain is simulated under actual condition
Mud stone, the drilling fluid under Fluid Dynamics actual condition in water storing tank, drill bit simulates the drill bit under actual condition.
The advantages of the utility model: simulating New well drilling mode, provides directive significance for scene practical application；Mould
Quasi- effect is good, can really simulate the flow field flow situation of change during counterflush drilling.
Detailed description of the invention
Fig. 1 is a kind of structure for the experimental provision for simulating gas hydrates counterflush drilling flow field change of the utility model
Schematic diagram；
Fig. 2 is flow schematic diagram of the fluid in reacting cycle flow process in Fig. 1.
In figure: 1. video cameras, 2. computer monitoring systems, 3. pressure sensors, 4. can visible joint A, 5. mixtures go out
Mouthful, 6. mixture intakes, 7. inner tubes, 8. outer tubes, 9. landwaste funnels, 10. ball valve A, 11. fluid flowmeters, 12. water pumps, 13. balls
Valve B, 14. gas flowmeters, 15. electromagnetic air pumps, 16. water storing tanks, 17. powder collection buckets, 18. small-sized electrical heatings are dry
Device, 19. gas-liquid-solid three-phase separators, 20. hanging rings, 21. drill bits, 22. nylon landwaste layers, 23. can visible joint B.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of experiment for simulating gas hydrates counterflush drilling flow field change of the utility model
Device, mainly by video camera 1, computer monitoring system 2, pressure sensor 3, can visible joint A4, mixture outlet 5, mixing
Object import 6, inner tube 7, outer tube 8, landwaste funnel 9, ball valve A10, fluid flowmeter 11, water pump 12, ball valve B13, gas flowmeter
14, electromagnetic air pump 15, water storing tank 16, powder collection bucket 17, small-sized electrical heating drier 18, gas-liquid-solid three-phase separator
19, hanging ring 20, drill bit 21, nylon landwaste layer 22 and can visible joint B23 composition, water storing tank 16 successively with water pump 12, liquid flow
Meter 11, ball valve A10, landwaste funnel 9 are connected with mixture intake 6, electromagnetic air pump 15 successively with gas flowmeter 14, ball
Valve B13 is in parallel with the water that water storing tank 16 flows out after being connected.
As shown in Figure 1, physical simulation process are as follows: be first turned on can visible joint B23, be put into nylon landwaste layer 22, then
Open water storing tank 16, water pump 12, ball valve A10 and landwaste funnel 9, then open electromagnetic air pump 15 and ball valve B13, make water from
Water storing tank 16, which is overpressurized together with particle and gas in landwaste funnel 9 from mixture intake 6 after flowing out, to be entered in outer tube 8.
Water, cutting grain and gas flow in the annular space between outer tube 8 and inner tube 7 from top to bottom together, are eventually punched into nylon landwaste
Layer 22 after, by nylon landwaste layer 22 nylon particles and cutting grain pass through drill bit together and enter inside inner tube 7, in inner tube 7
It inside up flows, finally flows out into gas-liquid-solid three-phase separator 19 from mixture outlet 5 and separated, the gas isolated
In direct emission atmosphere, the liquid isolated returns to water storing tank 16 and is reused, the landwaste and nylon particles isolated into
Enter to enter powder collection bucket 17 after small-sized electrical heating drier 18 is dried and be reused.In entire simulated experiment process
In the pressure changing in experimentation is monitored by computer monitoring system 2, video camera 1 be recorded in testing
Entire annular space flow field flows situation of change in journey, while recording nylon landwaste layer 22 by water, cutting grain and gas
With time change situation after souring.It is real by changing the length of nylon landwaste layer 22 and the discharge capacity repetition of water pump 12 or more
It tests, observes under different 22 length of nylon landwaste layer and different displacements flow field flow situation of change during counterflush drilling, finally
Change curve is drawn out, i.e., entire simulation process terminates.The situation of change obtained in entirely experiment simulation process will be to scene
The novel counterflush drilling engineering of gas hydrates is of great significance.
Claims (4)
1. a kind of experimental provision for simulating gas hydrates counterflush drilling flow field change, mainly by video camera (1), computer
Monitoring system (2), pressure sensor (3), can visible joint A (4), mixture outlet (5), mixture intake (6), inner tube (7),
Outer tube (8), landwaste funnel (9), ball valve A (10), fluid flowmeter (11), water pump (12), ball valve B (13), gas flowmeter
(14), electromagnetic air pump (15), water storing tank (16), powder collection bucket (17), small-sized electrical heating drier (18), gas-liquid-solid three
Phase separator (19), hanging ring (20), drill bit (21), nylon landwaste layer (22) and can visible joint B (23) composition；Its feature exists
In: water storing tank (16) successively with water pump (12), fluid flowmeter (11), ball valve A (10), landwaste funnel (9) and mixture intake
(6) it is connected, is flowed out after electromagnetic air pump (15) is successively connected with gas flowmeter (14), ball valve B (13) with water storing tank (16)
Water it is in parallel.
2. a kind of experimental provision for simulating gas hydrates counterflush drilling flow field change according to claim 1,
Be characterized in that: can visible joint A (4) and can visible joint B (23) using openable formula design.
3. a kind of experimental provision for simulating gas hydrates counterflush drilling flow field change according to claim 1,
Be characterized in that: ball valve used in experimentation is all the ball valve of same size, can visible joint A (4) left part, can open type
Connector B (23) lower part is separately installed with pressure sensor, for monitoring the pressure changing in whole experiment process in pit shaft；
Outer tube (8) and inner tube (7) are made using transparent acrylic glass, pressure-bearing 1MPa, and outer tube (8) is diameter
The round tube of 215.9mm, inner tube (7) diameter are the round tube of 127mm.
4. a kind of experimental provision for simulating gas hydrates counterflush drilling flow field change according to claim 1,
Be characterized in that: the casing under entire reacting cycle experiment simulation process middle external tube (8) simulation actual condition, inner tube (7) simulation are real
Drilling rod under the operating condition of border, nylon landwaste layer (22), which simulates to bore under actual condition, meets gas hydrates layer, and nylon particles simulation is real
Gas hydrate particle under the operating condition of border, cutting grain simulate the mud stone under actual condition, the Fluid Dynamics in water storing tank (16)
Drilling fluid under actual condition, drill bit (21) simulate the drill bit under actual condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820298332.6U CN208520832U (en) | 2018-03-05 | 2018-03-05 | A kind of experimental provision for simulating gas hydrates counterflush drilling flow field change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820298332.6U CN208520832U (en) | 2018-03-05 | 2018-03-05 | A kind of experimental provision for simulating gas hydrates counterflush drilling flow field change |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208520832U true CN208520832U (en) | 2019-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820298332.6U Expired - Fee Related CN208520832U (en) | 2018-03-05 | 2018-03-05 | A kind of experimental provision for simulating gas hydrates counterflush drilling flow field change |
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| Country | Link |
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| CN (1) | CN208520832U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622875A (en) * | 2021-08-16 | 2021-11-09 | 南方海洋科学与工程广东省实验室(湛江) | Natural gas hydrate solid fluidization excavation cavity flow field simulation device and experimental method |
| CN114166469A (en) * | 2021-12-27 | 2022-03-11 | 西南石油大学 | Solid-state fluidization exploitation jet flow recovery flow field detection experimental device and experimental method |
| CN115902126A (en) * | 2023-02-20 | 2023-04-04 | 四川职业技术学院 | Method for measuring influence of different foam fluids on reverse circulation well-flushing rock-carrying |
-
2018
- 2018-03-05 CN CN201820298332.6U patent/CN208520832U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622875A (en) * | 2021-08-16 | 2021-11-09 | 南方海洋科学与工程广东省实验室(湛江) | Natural gas hydrate solid fluidization excavation cavity flow field simulation device and experimental method |
| CN114166469A (en) * | 2021-12-27 | 2022-03-11 | 西南石油大学 | Solid-state fluidization exploitation jet flow recovery flow field detection experimental device and experimental method |
| CN115902126A (en) * | 2023-02-20 | 2023-04-04 | 四川职业技术学院 | Method for measuring influence of different foam fluids on reverse circulation well-flushing rock-carrying |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 Termination date: 20200305 |