CN108316913A - Ocean gas hydrate hides recovery process production simulating sand measurement device and method - Google Patents
Ocean gas hydrate hides recovery process production simulating sand measurement device and method Download PDFInfo
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- CN108316913A CN108316913A CN201810029272.2A CN201810029272A CN108316913A CN 108316913 A CN108316913 A CN 108316913A CN 201810029272 A CN201810029272 A CN 201810029272A CN 108316913 A CN108316913 A CN 108316913A
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- 239000004576 sand Substances 0.000 title claims abstract description 177
- 238000011084 recovery Methods 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000005259 measurement Methods 0.000 title claims abstract description 13
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 title claims description 27
- 238000000034 method Methods 0.000 title abstract description 14
- 239000013535 sea water Substances 0.000 claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 150000004677 hydrates Chemical class 0.000 claims abstract description 27
- 230000009545 invasion Effects 0.000 claims abstract description 25
- 238000003860 storage Methods 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 238000004088 simulation Methods 0.000 claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 44
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 35
- 239000007787 solid Substances 0.000 claims description 33
- 239000003345 natural gas Substances 0.000 claims description 16
- 230000006837 decompression Effects 0.000 claims description 14
- 238000003556 assay Methods 0.000 claims description 5
- 238000010079 rubber tapping Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- 238000000205 computational method Methods 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011549 displacement method Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0099—Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Sampling And Sample Adjustment (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The present invention relates to a kind of ocean gas hydrates to hide recovery process production simulating sand measurement device and method, including seawater storage tank, fill out sand tube, seawater invasion simulation pipeline, air water sand separating apparatus, sand/water receiver and high-low temperature test chamber；Seawater storage tank and fill out sand tube are placed in high-low temperature test chamber, the tube chamber of high pressure fill out sand tube simulates pipeline by seawater invasion and is connected with seawater storage tank, the input end of high pressure fill out sand tube is connected by gas injection pipeline and gas injection valve with high-pressure air source, and the outlet end of high pressure fill out sand tube is connected by exploiting pipeline and connection valve with air water sand separating apparatus；Air water sand separating apparatus is positioned in air, is in funnel shaped, first switch valve is provided on outlet at bottom；A flow line is provided at the top of air water sand separating apparatus, flow line input end stretches into air water sand separation dress, and counterbalance valve is provided on flow line；Sand/water receiver is set to below the first switch valve of air water sand separating apparatus bottom.
Description
Technical field
The present invention relates to a kind of production of hydrocarbons simulator and methods, especially with regard to a kind of sea considering seawater invasion
Foreign gas hydrates decompression recovery process shakes out the simulated determination device and method of ability.
Background technology
It is similar that gas hydrates are that hydrone generates under suitable conditions with the hydrocarbon gas molecule based on methane
In the cage type crystalline solid of ice-like.According to statistics, the whole world is conducive to gas hydrates generation and the land region of distribution accounts for the whole world
The 20% of the land gross area, ocean region account for the 90% of the global ocean gross area.It is stored in natural gas hydration according to incompletely statistics
Carbon at least 1*10 in object3T is approximately 2 times of carbon content summation in current explored all fossil fuels.Especially ocean
Gas hydrates, huge reserves have attracted the research enthusiasm of global numerous scholar, tissue etc..It is important in ocean at present
Gas hydrates output have 30, reflect that current research degree is high, foreground is tempting substantially and of greatest concern important
The place of production.These important outputs the whole world distribution, hence it is evident that presentation the characteristics of being controlled by geographic patterns, be concentrated mainly on each big
The continental margin depth of water that Lu Xianghai extends is more than the advantageously band of 300-500m.Such as：Pacific Ocean continental margin, the U.S. Xihai sea
Bank, the edges Ka Sikadi, curb, Japanese strand, South Sea trench, sea of Japan east edge, the Gulf of Mexico, Blair's submarine ridge on the outside of Peru
Deng.
The gas hydrates recovery method reported at present mainly has：Voltage drop method, heat injection method, note inhibitor method, gas
Body displacement method and solids fluidized exploitation method etc..Wherein decompression extraction system is considered as most convenient and economic production technique.Decompression
Extraction system is allowed to less than the natural gas hydrate phase balance emulation pressure under reservoir temperature by directly reducing the pressure of hydrate reservoir
Power is to promote the decomposition of hydrate and the extraction of natural gas.The gas hydrates runin reported adopts case and includes plus take
It is all made of in Nankai Trough in Alaska north slope Mount Elbert permafrost regions and Japan in MacKenzie delta, the U.S. greatly
It is decompression extraction system.Although these exploitation examples all obtain prodigious achievement in research, the rule of technical grade exploitation are not all reached
Mould., main reasons is that compared with conventional oil gas reservoir, the solid dielectric in gas hydrates reservoir is not fine for one of them
Cementing properties, with the decomposition of hydrate, the stability of reservoir can significantly reduce, and solid dielectric, water can be with decomposition of hydrate
The natural gas of generation produces together, the cost of winning of raising, or even exploitation well plugging and geological disaster is caused to occur.Especially for
Ocean hydrate is hidden, due to unstable, the closed cap rock of upper part compared with traditional oil-gas reservoir, with hydrate reservoir
The decomposition of middle hydrate and the discharge of gas, seawater can be poured in largely, and pouring in for seawater can further change gas-in reservoir
The Multiphase Flow characteristic of water-sand and the discharge for promoting sand grains and remaining solid dielectric.
It can thus be seen that seawater invasion, which is ocean gas hydrate, hides the inevitable phenomenon of recovery process, seawater enters
Invade while can significantly change air-water-sand Multiphase Flow situation of gas hydrate dissociation process hydrate Tibetan.Therefore research is examined
Consider the ocean gas hydrate under the conditions of seawater invasion and hide recovery process ability of shaking out and the development plan of marine natural gas reservoir is formulated
It has very important significance, it will help ocean gas hydrate hides the foundation that sand scheme is blocked up in recovery process draining.
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide a kind of ocean gas hydrate Tibetan considering seawater invasion
Recovery process production simulating sand measurement device and method are shaked out feelings with studying ocean gas hydrates under different exploitation condition
Condition, the foundation that decompression recovery process reasonable development scheme is hidden for practical ocean gas hydrate provide reliable theory and technology
It supports.
To achieve the above object, the present invention takes following technical scheme：A kind of ocean gas hydrate Tibetan recovery process
Production simulating sand measurement device, which is characterized in that the simulated determination device includes seawater storage tank, fill out sand tube, seawater invasion simulation pipe
Line, air-water-sand separating apparatus, sand/water receiver and high-low temperature test chamber；The seawater storage tank is positioned over the high/low temperature examination
In tryoff, interior deposit high pressure sea water in advance；The fill out sand tube is also positioned in the high-low temperature test chamber, the high pressure back-up sand
The tube chamber of pipe simulates pipeline by the seawater invasion and is connected with the seawater storage tank, and the input end of the high pressure fill out sand tube passes through
Gas injection pipeline and gas injection valve are connected with high-pressure air source, and the outlet end of the high pressure fill out sand tube is by exploiting pipeline and connection valve and institute
Air-water-sand separating apparatus is stated to be connected；Air-water-the sand separating apparatus is positioned in air, is in funnel shaped, outlet at bottom
On be provided with first switch valve；It is provided with a flow line, the flow line import at the top of the air-water-sand separating apparatus
End is stretched into the air-water-sand separation dress, and counterbalance valve is provided on the flow line；The sand/water receiver is set to institute
Below the first switch valve for stating air-water-sand separating apparatus bottom.
In a preferred embodiment, the fill out sand tube top is axially spaced is provided with the multiple and seawater invasion mould
The connected seawater grouting socket of quasi- pipeline, at the same the back-up sand bottom of the tube it is axially spaced have it is multiple with temperature sensor phase
The output end of sensor interface even, the temperature sensor connects data collecting system；The temperature sensor number regards institute
Depending on the length for stating fill out sand tube, preferably 3-5.
In a preferred embodiment, told seawater invasion simulation pipeline includes being stretched out from the seawater tank bottom
Tapping line and the multiple branch lines in parallel with the tapping line, each branch line and one on the fill out sand tube
A seawater grouting socket is connected；Meanwhile being both provided with mass flowmenter and second switch valve on each branch line；Institute
Branch line radical is stated depending on the back-up sand length of tube, preferably 2-5, the branch line diameter preferred scope is 0.1-
3cm。
In a preferred embodiment, a pressure sensing is respectively connected at the inlet end and an outlet end of the fill out sand tube
The output end of device, the pressure sensor also connects the data collecting system.
In a preferred embodiment, the fill out sand tube both ends are sealed by dismountable flange, are provided on the flange
Pipeline connector is realized by replacing the flange with different pipeline connectors and exploits pipeline described in different-diameter
Connection；The exploitation pipeline diameter ranging from 0.3-10cm.
In a preferred embodiment, a clean-up line, institute are additionally provided at the top of the air-water-sand separating apparatus
It states the connection of clean-up line one end and rinses water source, the other end stretches into the air-water-sand separating apparatus and connects a Flushing nozzle.
In a preferred embodiment, seawater pressure is pressed or is adapted by direct gas injection in the seawater storage tank
It is realized by hydraulic pressure after hydraulic tank with piston；Preferably, N is directly used2Or ArAs pressure medium.
A kind of ocean gas hydrate Tibetan recovery process production simulating sand assay method based on above-mentioned apparatus, including it is following
Step：
(1) experimental temperature for setting high-low temperature test chamber first closes all valves on air-water-sand separating apparatus, past
Seawater is injected in seawater storage tank and is pressurized to sea bottom hydrate hides reservoir pressure；
(2) solid dielectric and seawater are filled into fill out sand tube, depending on moisture content is by seawater injection rate, and from fill out sand tube
Input end injects natural gas, allows solid dielectric synthesis of natural gas hydrate-solid dielectric under high pressure, cryogenic conditions in fill out sand tube
Mixed deposit layer；
(3) a certain amount of natural gas is filled in advance into air-water-sand separating apparatus to set a hydrate recovery well well
Bottom pressure；
(4) the decompression mould that the connection valve between fill out sand tube and air-water-sand separating apparatus carries out gas hydrates is opened
Quasi- exploitation；
(5) random as needed in gas hydrates decompression recovery process or be all turned on sea water simulation invasion pipeline
Branch line, in conjunction with second switch valve and mass flowmenter control seawater invade rate, experimentation keep seawater storage tank in
Pressure almost constant；
(6) recovery process decomposes the natural of output from air-water-sand separating apparatus collected overhead gas hydrates respectively
Gas collects water and solid Jie that gas hydrates decompose output from sand/water receiver of air-water-sand separating apparatus bottom
Matter；
(7) solid dielectric that last quantitative collection decomposes output produces sand coarse aggregate ratio to calculate.
In above-mentioned steps (7), the computational methods that ocean gas hydrate hides recovery process production sand coarse aggregate ratio are as follows：
Assuming that the solid dielectric initially inserted in fill out sand tube is Ms, sand/water receiver quality of itself is Mz, finally recycle
Gross mass after water and solid dielectric is Mh, filter, the quality after dry moisture is Mg；Then air-water-sand separation is cleaned again
In sand/water receiver after device to clean dry, the quality of sand/water receiver is M after dry moistureg1, then finally calculate
Go out the solid dielectric total amount M being discharged in air-water-sand separating apparatusrsFor：
Mrs=Mg-Mz+Mg1-Mz (1)
To obtain sand production rate XrsFor：
In a preferred embodiment, inserted solid dielectric is seabed actual deposition layer substance in the fill out sand tube,
Or sand grains, clay, mud or their mixture of other different-grain diameter sizes.
The invention adopts the above technical scheme, which has the following advantages：The present invention can effectively simulate different seawater
Ocean gas hydrates decompression recovery process shakes out in invasion situation (single-point invasion, multiple spot invasion, different rates etc.)
Ability, the capability study that can shake out for ocean hydrate Tibetan gas hydrates recovery process provide simulation effect well, from
And the foundation that decompression recovery process development plan is hidden for practical ocean gas hydrate provides reliable theory and technology support,
To realize the safely, effectively exploitation of gas hydrates, while contributing to the exploitation and foundation of related prevention method.
Description of the drawings
The structural schematic diagram of Fig. 1 simulated determination devices of the present invention.
Specific implementation mode
The present invention is described in detail below with reference to the accompanying drawings and embodiments.It should be appreciated, however, that the offer of attached drawing is only
For a better understanding of the present invention, they should not be interpreted as limitation of the present invention.
Fig. 1 is illustrated hides recovery process production simulating sand measurement device according to ocean gas hydrate provided by the invention,
The simulated determination device includes high pressure sea water storage tank 1, high pressure fill out sand tube 2, seawater invasion simulation pipeline 3, air-water-sand separation dress
Set 4, sand/water receiver 5 and high-low temperature test chamber 6.
High pressure sea water storage tank 1 is positioned in high-low temperature test chamber 6, lays in high pressure sea water in high pressure sea water storage tank 1 in advance, main
It is used for the invasion use that ocean gas hydrate hides decompression recovery process seawater.
High pressure fill out sand tube 2 is also positioned in high-low temperature test chamber 6, and high pressure fill out sand tube 2 is mainly used for synthetic natural gas hydration
Object-solid dielectric mixed deposit layer.The tube chamber of high pressure fill out sand tube 2 simulates pipeline 3 and 1 phase of high pressure sea water storage tank by seawater invasion
Even, the input end of high pressure fill out sand tube 2 is connected by gas injection pipeline 7 and gas injection valve 8 with high-pressure air source (not shown), outlet end
It is connected with air-water-sand separating apparatus 4 by exploiting pipeline 9 and connection valve 10.
Air-water-sand separating apparatus 4 is positioned in air, is in funnel shaped, switch valve 11 is provided on outlet at bottom,
Water and sand for controlling discharge 4 bottom deposit of air-water-sand separating apparatus.4 top of air-water-sand separating apparatus is provided with one and adopts
Gas pipeline 12,12 input end of flow line extend into air-water-sand separation and fill in 4 at about 1/3 height, be arranged on flow line 12
There is counterbalance valve 13, for controlling the pressure in air-water-sand separating apparatus 12.
Sand/water receiver 5 is arranged below the switch valve 11 of 4 bottom of air-water-sand separating apparatus, is mainly used for receiving gas-
The water and sand that water-sand separating apparatus 4 is discharged.
High-low temperature test chamber 6 is mainly that simulated seawater provides low temperature environment, while being situated between for synthesis of natural gas hydrate-solid
Matter mixed deposit layer provides low temperature environment.
In a preferred embodiment, 2 top of high pressure fill out sand tube is axially spaced is provided with multiple and seawater invasion simulation
The connected seawater grouting socket of pipeline 3, at the same 2 bottom of high pressure fill out sand tube it is axially spaced be provided with it is multiple with temperature sensor 14
The output end of connected sensor interface, temperature sensor 14 connects data collecting system 15, for monitoring different moments high pressure
Temperature conditions in fill out sand tube 2.14 numbers of temperature sensor are depending on the length of high pressure fill out sand tube 2, preferably 3-5.
In a preferred embodiment, seawater invasion simulation pipeline 3 includes the row stretched out from 1 bottom of high pressure sea water storage tank
Liquid pipe line and the multiple branch lines in parallel with tapping line, each branch line are noted with a seawater on high pressure fill out sand tube 2
Incoming interface is connected；Meanwhile mass flowmenter 16 and a switch valve 17 there are one being respectively provided on each branch line, quality stream
Gauge 16 is used for showing that seawater charge velocity, switch valve 17 are used for adjusting seawater injection uninterrupted.
In a preferred embodiment, branch line radical is depending on 2 length of high pressure fill out sand tube, preferably 2-5, branch
Pipeline diameter preferred scope is 0.1-3cm.
In a preferred embodiment, 1 pressure sensing is respectively connected at the inlet end and an outlet end of high pressure fill out sand tube 2
The output end of device 18, pressure sensor 18 also connects data collecting system 15, for before and after monitoring different moments high pressure fill out sand tube 2
Pressure condition.
In a preferred embodiment, 2 both ends of high pressure fill out sand tube are sealed by dismountable flange, and pipeline is provided on flange
Connector even exploits pipeline 9 and is mainly used to simulate natural gas hydration between high pressure fill out sand tube 2 and air-water-sand separating apparatus 4
Object hides the perforation or shaft bottom filter mesh of recovery well wall surface, can be realized by replacing the flange with different pipeline connectors
The connection that pipeline 9 is exploited with different-diameter, to simulate different size of perforation or shaft bottom filter mesh.Preferably, pipeline 9 is exploited
Diameter range is 0.3-10cm.
In a preferred embodiment, 4 top of air-water-sand separating apparatus is additionally provided with a clean-up line 19, rinses
Water source is rinsed in the connection of 19 one end of pipeline, and the other end stretches into air-water-sand separating apparatus 4 and connect a Flushing nozzle 20, main to use
Remaining sand in air-water-sand separating apparatus 4 is rinsed in water inlet after experiment.
In a preferred embodiment, seawater pressure can be pressed or can be by it by direct gas injection in high pressure sea water storage tank 1
It is realized by hydraulic pressure after repacking the hydraulic tank with piston into.Preferably, N is directly used2Or ArAs pressure medium.
Based on the simulated determination device that above-described embodiment provides, the invention also provides a kind of ocean gas hydrates to hide
Recovery process production simulating sand assay method, includes the following steps：
(1) experimental temperature for setting high-low temperature test chamber 6 first, closes all valves on air-water-sand separating apparatus 4,
Seawater is injected into high pressure sea water storage tank 1 and is pressurized to sea bottom hydrate hides reservoir pressure；
(2) flange for removing 2 one end of high pressure fill out sand tube, fills solid dielectric and seawater thereto, and moisture content passes through seawater
Depending on injection rate, flange is then sealed up, injects natural gas from the input end of high pressure fill out sand tube 2, solid in high pressure fill out sand tube 2 is allowed to be situated between
Matter synthesis of natural gas hydrate-solid dielectric mixed deposit layer under high pressure, cryogenic conditions；
(3) a certain amount of natural gas is filled in advance into air-water-sand separating apparatus 4 to set a hydrate recovery well
Bottom pressure (less than the steady pressure of gas hydrates at temperature residing for high pressure fill out sand tube)；
(4) connection valve 10 opened between high pressure fill out sand tube 2 and air-water-sand separating apparatus 4 carries out gas hydrates
Decompression simulation exploitation；
(5) random as needed in gas hydrates decompression recovery process or be all turned on sea water simulation invasion pipeline
3 branch line controls seawater in conjunction with switch valve 17 and mass flowmenter 16 and invades rate, and experimentation keeps high pressure sea water storage
Pressure almost constant in tank 1；
(6) recovery process decomposes the day of output from 4 collected overhead gas hydrates of air-water-sand separating apparatus respectively
Right gas is collected the water of gas hydrates decomposition output from sand/water receiver 5 of 4 bottom of air-water-sand separating apparatus and is consolidated
Body medium；
(7) solid dielectric that last quantitative collection decomposes output produces sand coarse aggregate ratio to calculate.
Wherein, the computational methods of ocean gas hydrate Tibetan recovery process production sand coarse aggregate ratio (ability of shaking out) are as follows：
Assuming that the solid dielectric initially inserted in high pressure fill out sand tube 2 is Ms, sand/water of 4 bottom of air-water-sand separating apparatus
The quality of itself of receiver 5 is Mz, the gross mass after last recycle-water and solid dielectric is Mh, filter, the quality after dry moisture
For Mg；Then it cleans again in sand/water receiver 5 after air-water-sand separating apparatus 4 to clean dry, sand after dry moisture/
The quality of water receiver 5 is Mg1, then the solid dielectric total amount M being discharged in air-water-sand separating apparatus 4 can finally be calculatedrs
For：
Mrs=Mg-Mz+Mg1-Mz (1)
So as to obtain sand production rate XrsFor：
In a preferred embodiment, inserted solid dielectric can be seabed actual deposition layer in high pressure fill out sand tube 2
Substance or the sand grains of other different-grain diameter sizes, clay, mud or their mixture.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each component, connection type and manufacture craft etc. are all
It can be varied from, every equivalents carried out based on the technical solution of the present invention and improvement should not exclude
Except protection scope of the present invention.
Claims (10)
1. a kind of ocean gas hydrate hides recovery process production simulating sand measurement device, which is characterized in that the simulated determination fills
It sets including seawater storage tank, fill out sand tube, seawater invasion simulation pipeline, air-water-sand separating apparatus, sand/water receiver and high/low temperature examination
Tryoff；
The seawater storage tank is positioned in the high-low temperature test chamber, interior deposit high pressure sea water in advance；
The fill out sand tube is also positioned in the high-low temperature test chamber, and the tube chamber of the high pressure fill out sand tube passes through the seawater invasion
Simulation pipeline is connected with the seawater storage tank, and the input end of the high pressure fill out sand tube passes through gas injection pipeline and gas injection valve and high pressure gas
Source is connected, and the outlet end of the high pressure fill out sand tube is connected by exploiting pipeline and connection valve with the air-water-sand separating apparatus；
Air-water-the sand separating apparatus is positioned in air, is in funnel shaped, first switch valve is provided on outlet at bottom；
A flow line is provided at the top of the air-water-sand separating apparatus, the flow line input end stretches into the air-water-sand point
From in dress, counterbalance valve is provided on the flow line；
The sand/water receiver is set to below the first switch valve of the air-water-sand separating apparatus bottom.
2. ocean gas hydrate as described in claim 1 hides recovery process production simulating sand measurement device, which is characterized in that
The fill out sand tube top is axially spaced to be provided with multiple seawater grouting sockets being connected with seawater invasion simulation pipeline, simultaneously
There are multiple sensor interfaces being connected with temperature sensor, the temperature sensor the back-up sand bottom of the tube is axially spaced
Output end connect data collecting system；The temperature sensor number is depending on the length of the fill out sand tube, preferably 3-5.
3. ocean gas hydrate as claimed in claim 2 hides recovery process production simulating sand measurement device, which is characterized in that
Told seawater invasion simulation pipeline includes the tapping line stretched out from the seawater tank bottom and in parallel with the tapping line
Multiple branch lines, each branch line is connected with a seawater grouting socket on the fill out sand tube；Meanwhile every
It is both provided with mass flowmenter and second switch valve on one branch line；The branch line radical regards the back-up sand pipe range
Depending on degree, preferably 2-5, the branch line diameter preferred scope is 0.1-3cm.
4. ocean gas hydrate as claimed in claim 2 hides recovery process production simulating sand measurement device, which is characterized in that
A pressure sensor is respectively connected at the inlet end and an outlet end of the fill out sand tube, the output end of the pressure sensor also connects
The data collecting system.
5. ocean gas hydrate as described in claim 1 hides recovery process production simulating sand measurement device, which is characterized in that
The fill out sand tube both ends are sealed by dismountable flange, and pipeline connector is provided on the flange, and different pipes are carried by replacement
The flange of line connector come realize with described in different-diameter exploit pipeline connection；The exploitation pipeline diameter is ranging from
0.3-10cm。
6. ocean gas hydrate as described in claim 1 hides recovery process production simulating sand measurement device, which is characterized in that
A clean-up line is additionally provided at the top of the air-water-sand separating apparatus, water source is rinsed in clean-up line one end connection, separately
One end stretches into the air-water-sand separating apparatus and connects a Flushing nozzle.
7. ocean gas hydrate as described in claim 1 hides recovery process production simulating sand measurement device, which is characterized in that
Seawater pressure is pressed or is adapted into after the hydraulic tank with piston by direct gas injection through hydraulic pressure reality in the seawater storage tank
It is existing；Preferably, N is directly used2Or ArAs pressure medium.
8. a kind of ocean gas hydrate based on any one of such as claim 1 to 7 described device hides recovery process and goes out sand mo(u)ld
Quasi- assay method, includes the following steps：
(1) experimental temperature for setting high-low temperature test chamber first, closes all valves on air-water-sand separating apparatus, toward seawater
Seawater is injected in storage tank and is pressurized to sea bottom hydrate hides reservoir pressure；
(2) solid dielectric and seawater are filled into fill out sand tube, depending on moisture content is by seawater injection rate, and from the import of fill out sand tube
End injection natural gas, allows solid dielectric synthesis of natural gas hydrate-solid dielectric mixing under high pressure, cryogenic conditions in fill out sand tube
Sedimentary；
(3) a certain amount of natural gas is filled in advance into air-water-sand separating apparatus to set a hydrate recovery well shaft bottom pressure
Power；
(4) the decompression simulation for opening the connection valve progress gas hydrates between fill out sand tube and air-water-sand separating apparatus is opened
It adopts；
(5) point that be random as needed or being all turned on sea water simulation invasion pipeline in gas hydrates decompression recovery process
By-pass line invades rate in conjunction with second switch valve and mass flowmenter control seawater, and experimentation keeps seawater tank inner pressure
Substantially constant；
(6) recovery process decomposes the natural gas of output from air-water-sand separating apparatus collected overhead gas hydrates respectively,
The water and solid dielectric that gas hydrates decompose output are collected from sand/water receiver of air-water-sand separating apparatus bottom；
(7) solid dielectric that last quantitative collection decomposes output produces sand coarse aggregate ratio to calculate.
9. ocean gas hydrate as claimed in claim 8 hides recovery process production simulating sand assay method, which is characterized in that
The computational methods that ocean gas hydrate hides recovery process production sand coarse aggregate ratio are as follows：
Assuming that the solid dielectric initially inserted in fill out sand tube is Ms, sand/water receiver quality of itself is Mz, last recycle-water and
Gross mass after solid dielectric is Mh, filter, the quality after dry moisture is Mg；Then air-water-sand separating apparatus is cleaned again
In sand/water receiver after to clean dry, the quality of sand/water receiver is M after dry moistureg1, then gas-is finally calculated
The solid dielectric total amount M being discharged in water-sand separating apparatusrsFor：
Mrs=Mg-Mz+Mg1-Mz (1)
To obtain sand production rate XrsFor：
10. ocean gas hydrate as claimed in claim 8 hides recovery process production simulating sand assay method, feature exists
In inserted solid dielectric is the sand grains of seabed actual deposition layer substance or other different-grain diameter sizes, glues in the fill out sand tube
Soil, mud or their mixture.
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| CN111794722A (en) * | 2020-08-14 | 2020-10-20 | 西南石油大学 | Marine natural gas hydrate accumulation-development simulation experiment system and method |
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