CN108918183A - Micro- brill experimental provision and method are turned round in hydrate vibration in ocean - Google Patents
Micro- brill experimental provision and method are turned round in hydrate vibration in ocean Download PDFInfo
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- CN108918183A CN108918183A CN201811096176.6A CN201811096176A CN108918183A CN 108918183 A CN108918183 A CN 108918183A CN 201811096176 A CN201811096176 A CN 201811096176A CN 108918183 A CN108918183 A CN 108918183A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 241001074085 Scophthalmus aquosus Species 0.000 title claims abstract description 25
- 238000005553 drilling Methods 0.000 claims abstract description 92
- 239000007789 gas Substances 0.000 claims abstract description 71
- 238000006243 chemical reaction Methods 0.000 claims abstract description 70
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000002474 experimental method Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 18
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 18
- 238000004088 simulation Methods 0.000 claims abstract description 12
- 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 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000011049 filling Methods 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 150000004677 hydrates Chemical class 0.000 claims description 25
- 239000012153 distilled water Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 239000000523 sample Substances 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- 229910021532 Calcite Inorganic materials 0.000 claims description 4
- 239000006004 Quartz sand Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052900 illite Inorganic materials 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910052627 muscovite Inorganic materials 0.000 claims description 4
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 238000002242 deionisation method Methods 0.000 claims description 2
- 125000003158 alcohol group Chemical group 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 235000013312 flour Nutrition 0.000 abstract description 8
- 238000005070 sampling Methods 0.000 abstract description 8
- 239000004576 sand Substances 0.000 abstract description 8
- 238000011160 research Methods 0.000 abstract description 6
- 238000011156 evaluation Methods 0.000 abstract description 3
- 230000000704 physical effect Effects 0.000 abstract description 3
- 101100165177 Caenorhabditis elegans bath-15 gene Proteins 0.000 description 4
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 3
- 229910052901 montmorillonite Inorganic materials 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- -1 natural gas Nitride Chemical class 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Earth Drilling (AREA)
Abstract
Micro- brill experimental provision and method are turned round in hydrate vibration in ocean, its experimental procedure includes system debug, the preparation of reservoir material and filling, vacuumize process, synthesis of natural gas hydrate, micro- brill experiment, interpretation of result, experimental provision includes methane gas cylinder, reaction kettle, drilling tool, cryogenic thermostat water bath, vacuum pump, vibrator, slewing equipment and microcomputer, methane gas cylinder and reaction kettle pass through piping connection, reaction kettle is mounted in cryogenic thermostat water bath, the upper end of drilling tool is connect with slewing equipment, the lower end of drilling tool passes through to be placed in reaction kettle at the top of reaction kettle, and the junction of drilling tool and reaction kettle is provided with dynamic sealing device；Vibrator is for driving drilling tool to make longitudinal forced vibration；Slewing equipment is for driving drilling tool to rotate；The present invention more really can carry out micro- drill jig draft experiment in simulation ocean hydrate, and influence of the sampling in the feasibility of ocean shale flour sand reservoir and evaluation vibration to hydrate physical property is vibrated in research.
Description
Technical field
Micro- brill experimental technique field is turned round the present invention relates to the vibration of ocean hydrate more particularly to ocean hydrate vibrates back
Turn micro- brill experimental provision and method.
Background technique
Gas hydrates are under cryogenic high pressure environment, and the one kind generated by natural gas and water is like ice and snow shape cage type chemical combination
Object, it is big by feat of reserves, range is wide, calorific value is high, combustion cleaning the advantages that, being considered as by many countries in the world following most has exploitation
The energy of prospect.Gas hydrates are distributed widely in the deep-water subsea deposit and continent permafrost that the depth of water is more than 300m
In layer, there is ocean abundant to be hydrated goods and materials source in China, and stock number is equivalent to China land and offshore oil natural gas is total
The half of stock number, exploration prospect are wide.
The research means of gas hydrates mainly include laboratory experiment, simulated experiment and core drilling research, wherein
Core drilling is most direct research means, is the essential technological means of researching natural gas hydrate, but gas water
It closes object coring and conventional geology coring is very different.When carrying out gas hydrates drilling, it is easy to be hydrated natural gas
Nitride layer generates disturbance, so that gas hydrates are decomposed, on the one hand the continuous spilling of gas stores up gas hydrates
The supporting role of layer reduces, and the mechanical property of gas hydrates reservoir is caused to decline, and the gas on the other hand generated can make
Pore pressure increases, and reduces effective pressure, so that the intensity of gas hydrates reservoir declines, generates the geology such as submarine landslide
Disaster.Existing gas hydrates sampling method is difficult to obtain higher core recovery percentage simultaneously, and drilling efficiency is also relatively
It is low, it is also less particular for the sampling method of ocean shale flour sand reservoir gas hydrates.Therefore it is needed in the prior art
A kind of novel technical solution is wanted to solve the problems, such as this.
Summary of the invention
It is an object of the invention to occur in sampling process for current gas hydrates sampling method, mention
Micro- brill experimental provision and method are turned round in a kind of ocean hydrate vibration out, can carry out the micro- drill jig draft experiment of gas hydrates,
Research vibration sampling vibrates the influence to hydrate physical property in the feasibility of ocean shale flour sand reservoir and evaluation.
In order to achieve the above object, the present invention adopts the following technical scheme that：Micro- brill experiment is turned round in hydrate vibration in ocean
Device, which is characterized in that including：Methane gas cylinder, reaction kettle, drilling tool, cryogenic thermostat water bath, vacuum pump, vibrator, revolution dress
It sets and microcomputer,
The methane gas cylinder is tightly connected by the air inlet of the first pipeline and reaction kettle, and is successively set on the first pipeline
It is equipped with first pressure sensor, the first valve, pressure regulator, the second valve and gas flowmeter, and first pressure sensor
And gas flowmeter is connected on microcomputer by signal wire；
The reaction kettle is mounted in cryogenic thermostat water bath, and the bottom of reaction kettle is provided with second pressure sensor and temperature
Sensor is spent, and second pressure sensor and temperature sensor are connect by signal wire with microcomputer；
The vacuum pump passes through the second piping connection to first between gas flowmeter and the air inlet of reaction kettle
On pipeline, and third valve is provided on the second pipeline；
The upper end of the drilling tool is connect with slewing equipment, and the lower end of drilling tool passes through to be placed in reaction kettle at the top of reaction kettle, and
The junction of drilling tool and reaction kettle is provided with dynamic sealing device；
The vibrator is arranged on drilling tool, and vibrator is for driving drilling tool to make longitudinal forced vibration；
The slewing equipment for driving drilling tool to rotate, be provided on slewing equipment drilling depth sensor, bit weight sensor and
Speed probe, drilling depth sensor, bit weight sensor and speed probe pass through signal wire and connect with microcomputer.
Wherein, the water-bath medium in the cryogenic thermostat water bath is alcohol or ethylene glycol.
Wherein, the temperature control range of the cryogenic thermostat water bath is -10 DEG C~25 DEG C.
Wherein, the vibration frequency range of the vibrator is 25Hz~42Hz.
Wherein, the input shaft of the slewing equipment is connect with motor, gear and revolution on the input shaft of slewing equipment
Gear engagement on gyrator inner shaft one end of device, the taper being located at turn around on the angular wheel and drilling tool of the device inner shaft other end
Gear engagement is to drive drilling tool to rotate.
Micro- brill experimental method is turned round in hydrate vibration in ocean, which is characterized in that this method uses the ocean hydrate
Micro- brill experimental provision is turned round in vibration, specifically comprises the following steps：
(1) system debug, while checking pipeline No leakage；
(2) preparation of reservoir material and filling：Reservoir material is filled in reaction kettle, simulation reservoir is obtained, simulation is stored up
Layer tamping, seals reaction kettle；
(3) vacuumize process：Third valve is opened, the air in reaction kettle and pipeline is taken away by vacuum pump, after
Close third valve；
(4) synthesis of natural gas hydrate：Bath temperature is adjusted to 2 DEG C using cryogenic thermostat water bath, unscrews methane gas
Bottle opens the first valve, opens the second valve after adjusting steadily using the gas pressure that pressure regulator exports methane gas cylinder,
Methane gas is slowly introducing in reaction kettle by air inlet, passes through the second pressure sensor detection reaction installed on reaction kettle
Pressure condition in kettle is passed through the amount of methane gas in reaction kettle according to gas flowmeter detection, when the pressure in reaction kettle reaches
To after predetermined pressure, the second valve is closed, starts synthesis of natural gas hydrate, is detected in synthesis process by temperature sensor anti-
Answer the temperature change in kettle；
(5) micro- brill experiment：It is finished to gas hydrates synthesis, starts drilling machine, adjust drilling parameter, wherein drilling ginseng
Number includes bit pressure, revolving speed and vibration frequency, and driving drilling tool carries out drilling experiment；In drilling process by second pressure sensor and
Temperature sensor detects the variation of reactor temperature and pressure, is remembered by drilling depth sensor, bit weight sensor, speed probe
Drilling parameter is recorded, when drilling depth reaches predetermined depth, stops drilling, mention drilling through the heart；
(6) interpretation of result：Saturation degree test is carried out to rock core is drilled through, and combines corresponding drilling parameter, analysis experiment number
According to.
Wherein, specific step is as follows with filling for the preparation of reservoir material in step (2)：Respectively weigh 1700g quartz sand,
1500g muscovite, 1100g calcite, 800g montmorillonite, 550g illite and 500g deionized-distilled water as reservoir material,
Reservoir material point is imported in blender several times and is stirred evenly, the mixing material being stirred all is poured into pre-cleaning drying
In reaction kettle, while blender is rinsed using deionized-distilled water, and the deionized-distilled water for rinsing blender is poured into instead
It answers in kettle, the deionized-distilled water used for rinsing blender is included in the dosage of total deionized-distilled water, and reservoir material is loaded
In reaction kettle, simulation reservoir is obtained, by simulation reservoir tamping, seals reaction kettle.
Wherein, the predetermined pressure in reaction kettle described in step (4) is 8MPa.
Through the above design, the present invention can be brought the following benefits：Hydrate vibration in ocean proposed by the present invention
It moves the micro- brill experimental provision of revolution and method more really simulates ocean shale flour sand hydrate reservoir, high-frequency vibration is utilized to return
The mode turned, improves sample rate, improves the success rate of sampling, reduces the disturbance in drilling process to gas hydrates；
The vibration frequency of use is far smaller than the vibration frequency of microwave, will not cause the decomposition of gas hydrates；Design drilling parameter
It is adjustable, the influence under different drilling parameters and vibration frequency to gas hydrates sampling can be measured, it can be deduced that most
Excellent drilling parameter and vibration frequency.
Detailed description of the invention
Specific embodiments of the present invention are further described in detail with reference to the accompanying drawing.
Fig. 1 is the micro- overall structure diagram for boring experimental provision of ocean hydrate vibration revolution in the embodiment of the present invention.
It is respectively marked in figure as follows：1- methane gas cylinder；2- first pressure sensor；The first valve of 3-；4- pressure regulator；5-
Second valve；6- vacuum pump；7- third valve；8- gas flowmeter；9- reaction kettle；10- air inlet；11- second pressure sensing
Device；12- temperature sensor；13- dynamic sealing device；14- drilling tool；15- cryogenic thermostat water bath；16- vibrator；17- revolution dress
It sets；18- drilling depth sensor；19- bit weight sensor；20- speed probe；21- microcomputer.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.It should be understood by those skilled in the art that.Specifically described content is illustrative and be not restrictive below, should not be with this
It limits the scope of the invention.In order to avoid obscuring essence of the invention, well known method, process, process and element are not
It is described in detail." first ", " second " used in the present invention and " third " are not offered as any sequence, quantity or important
Property, and be used only to distinguish different component parts.
The present embodiment is by taking the shale flour sand reservoir of ocean as an example：Shale flour sand simulates reservoir according to 1700g quartz sand, 1500g
Muscovite, 1100g calcite, 800g montmorillonite, 550g illite and 500g deionized-distilled water carry out mixed configuration, configure
Blender is needed to carry out auxiliary mixing in journey.
As shown in Figure 1, hydrate vibration in ocean turns round micro- brill experimental provision by hydrate experimental system, micro- drill system, confession
Gas system, cryogenic thermostat system and data acquisition processing system composition can carry out the micro- drill jig draft experiment of hydrate, research vibration
It samples and vibrates the influence to gas hydrates physical property in the feasibility of ocean shale flour sand reservoir and evaluation.
The hydrate experimental system includes reaction kettle 9, and the air inlet 10 of reaction kettle 9 is close by pipeline and methane gas cylinder 1
Envelope connection, the lower part of reaction kettle 9 are equipped with second pressure sensor 11 and temperature sensor 12, and hydrate experimental system is natural
The synthesis of gas hydrate and the drilling for simulating reservoir provide experimental situation.
Micro- drill system includes drilling tool 14, vibrator 16 and slewing equipment 17, upper end and the slewing equipment 17 of drilling tool 14
Connection, the lower end of drilling tool 14 passes through to be placed in reaction kettle 9 at the top of reaction kettle 9, and is arranged in the junction of drilling tool 14 and reaction kettle 9
There is dynamic sealing device 13；Vibrator 16 is arranged on drilling tool 14, and vibrator 16 is for driving drilling tool 14 to make longitudinal forced vibration；It returns
Rotary device 17 is provided with drilling depth sensor 18, bit weight sensor 19 and revolving speed on slewing equipment 17 for driving drilling tool 14 to rotate
Sensor 20, drilling depth sensor 18, bit weight sensor 19 and speed probe 20 are connected by signal wire and microcomputer 21
It connects, micro- drill system provides exciting force, drilling parameter etc., creeps into synthetic gas hydrates simulation reservoir.
The air supply system includes methane gas cylinder 1, first pressure sensor 2, the first valve 3, pressure regulator 4, second
Valve 5, vacuum pump 6, third valve 7 and gas flowmeter 8, wherein the setting of first pressure sensor 2 is in methane gas cylinder 1 and the
Between one valve 3, gas flowmeter 8 is arranged between the second valve 5 and the air inlet 10 of reaction kettle 9, and each section passes through pipeline
It is attached, is connect eventually by air inlet 10 with reaction kettle 9；Air supply system provides gas for the synthesis of gas hydrates
Source and pressure environment.
The cryogenic thermostat system includes cryogenic thermostat water bath 15, and cryogenic thermostat water bath 15 is setting of buying in the market
Standby, the temperature control range of cryogenic thermostat water bath is -10 DEG C~25 DEG C, and cryogenic thermostat mode is water-bath regulative mode, water-bath medium
For alcohol or ethylene glycol, reaction kettle 9 is mounted in cryogenic thermostat water bath 15, and cryogenic thermostat system is gas hydrates
Synthesis and analogic drilling provide temperature environment.
The data acquisition processing system include first pressure sensor 2, second pressure sensor 11, gas flowmeter 8,
Temperature sensor 12, drilling depth sensor 18, bit weight sensor 19, speed probe 20 and microcomputer 21, wherein each biography
Sensor is mounted in other systems, is connected to microcomputer 21 by signal wire, data acquisition processing system is to collected
Data are handled.
Further, the vibrator 16 of micro- drill system needs that motor drive is separately configured；
The vibration frequency of vibrator 16 should reach the frequency range of high-frequency vibration, i.e. 25Hz~42Hz.
Drilling parameter can be adjusted, convenient for carrying out experimental study under different drilling parameters.
The function of reaction kettle 9 not only includes as micro- carry out place for boring experiment, further includes carrying out gas hydrates
Synthesis and the function of decomposing, wherein dynamic sealing device 13 should be able to be resistant to higher pressure, pressure resistance at least 20MPa.
9 lower part of reaction kettle needs to fix, and prevents the movement of reaction kettle 9 in drilling process from causing safety accident.
Preferably, the input shaft of the slewing equipment 17 is connect with motor, the gear on the input shaft of slewing equipment 17
Gear engagement on gyrator inner shaft one end of slewing equipment 17, is located at turn around the angular wheel and drilling tool of the device inner shaft other end
Angular wheel engagement on 14 is to drive drilling tool 14 to rotate.
Shale flour sand reservoir gas hydrates vibration in ocean is turned round micro- brill analogue experiment method and is included the following steps：
(1) system debug：Drilling system has been debugged in advance before gas hydrates synthesis, checks 16 He of vibrator
The working condition and performance of slewing equipment 17 and the sensitivity of drilling depth sensor 18, bit weight sensor 19, speed probe 20, it
All valves are all closed afterwards, connection methane gas cylinder 1 waits experimental assemblies, is passed through gas in advance and carries out pressure testing, it is ensured that pipeline
Without gas leakage；
(2) preparation of reservoir material and filling：Respectively weigh 1700g quartz sand, 1500g muscovite, 1100g calcite,
Reservoir material point is imported several times and is stirred as reservoir material by 800g montmorillonite, 550g illite and 500g deionized-distilled water
It stirs evenly, the mixing material being stirred all is poured into the reaction kettle 9 of pre-cleaning drying in machine, while using deionization
Distilled water flushing blender, and the deionized-distilled water for being rinsed blender is poured into reaction kettle 9, flushing blender used
Deionized-distilled water be included in the dosage of total deionized-distilled water, obtain simulation reservoir, will simulation reservoir tamping, sealing reaction
Kettle 9；
(3) vacuumize process：Third valve 7 is opened, takes the air in reaction kettle 9 and pipeline away using vacuum pump 6, is arranged
Except the influence of air in experimentation, after close third valve 7；
(4) synthesis of natural gas hydrate：Bath temperature is adjusted to 2 DEG C using cryogenic thermostat water bath 15.Unscrew methane gas
Bottle 1 opens the first valve 3, opens second after adjusting steadily using the gas pressure that pressure regulator 4 exports methane gas cylinder 1
Methane gas is slowly introducing in reaction kettle 9 by valve 5 by air inlet 10, is sensed by the second pressure installed on reaction kettle 9
Device 11 detects the pressure condition in reaction kettle 9, the amount for being passed through methane gas in reaction kettle 9 is detected according to gas flowmeter 8, when anti-
After answering the pressure in kettle 9 to reach predetermined pressure 8MPa, the second valve 5 is closed, starts synthesis of natural gas hydrate, in synthesis process
The temperature change in reaction kettle 9 is detected by temperature sensor 12；
(5) micro- brill experiment：It is finished to gas hydrates synthesis, starts drilling machine, adjust drilling parameter, wherein drilling ginseng
Number includes bit pressure, revolving speed and vibration frequency, and driving drilling tool 14 carries out drilling experiment；Pass through second pressure sensor in drilling process
11, temperature sensor 12 detects the variation of temperature and pressure in reaction kettle 9, by drilling depth sensor 18, bit weight sensor 19, turns
Fast sensor 20 records drilling parameter, when drilling depth reaches predetermined depth 100mm, stops drilling, mention drilling through the heart；
(6) interpretation of result：The test such as saturation degree is carried out to rock core is drilled through, and combines corresponding drilling parameter, analysis experiment
Data.
Claims (8)
1. micro- brill experimental provision is turned round in hydrate vibration in ocean, which is characterized in that including：It is methane gas cylinder, reaction kettle, drilling tool, low
Warm constant water bath box, vacuum pump, vibrator, slewing equipment and microcomputer,
The methane gas cylinder is tightly connected by the air inlet of the first pipeline and reaction kettle, and is disposed on the first pipeline
First pressure sensor, the first valve, pressure regulator, the second valve and gas flowmeter, and first pressure sensor and gas
Flowmeter body is connected on microcomputer by signal wire；
The reaction kettle is mounted in cryogenic thermostat water bath, and the bottom of reaction kettle is provided with second pressure sensor and temperature passes
Sensor, and second pressure sensor and temperature sensor are connect by signal wire with microcomputer；
The vacuum pump passes through the second piping connection to the first pipeline between gas flowmeter and the air inlet of reaction kettle
On, and third valve is provided on the second pipeline；
The upper end of the drilling tool is connect with slewing equipment, and the lower end of drilling tool passes through to be placed in reaction kettle at the top of reaction kettle, and is being bored
The junction of tool and reaction kettle is provided with dynamic sealing device；
The vibrator is arranged on drilling tool, and vibrator is for driving drilling tool to make longitudinal forced vibration；
The slewing equipment is provided with drilling depth sensor, bit weight sensor and revolving speed for driving drilling tool to rotate on slewing equipment
Sensor, drilling depth sensor, bit weight sensor and speed probe pass through signal wire and connect with microcomputer.
2. micro- brill experimental provision is turned round in hydrate vibration in ocean according to claim 1, wherein the cryogenic thermostat water-bath
Water-bath medium in case is alcohol or ethylene glycol.
3. micro- brill experimental provision is turned round in hydrate vibration in ocean according to claim 1 or 2, wherein the cryogenic thermostat
The temperature control range of water bath is -10 DEG C~25 DEG C.
4. micro- brill experimental provision is turned round in hydrate vibration in ocean according to claim 3, wherein the vibration of the vibrator
Frequency range is 25Hz~42Hz.
5. micro- brill experimental provision is turned round in ocean hydrate according to claim 4 vibration, wherein the slewing equipment it is defeated
Enter axis to connect with motor, the gear on gyrator inner shaft one end of the gear and slewing equipment on the input shaft of slewing equipment is nibbled
It closes, the angular wheel engagement being located at turn around on the angular wheel and drilling tool of the device inner shaft other end is to drive drilling tool to rotate.
6. micro- brill experimental method is turned round in hydrate vibration in ocean, which is characterized in that this method uses ocean as claimed in claim 4
Micro- brill experimental provision is turned round in hydrate vibration, specifically comprises the following steps：
(1) system debug, while checking pipeline No leakage；
(2) preparation of reservoir material and filling：Reservoir material is filled in reaction kettle, simulation reservoir is obtained, simulation reservoir is smash
It is real, seal reaction kettle；
(3) vacuumize process：Open third valve, the air in reaction kettle and pipeline is taken away by vacuum pump, after close
Third valve；
(4) synthesis of natural gas hydrate：Bath temperature is adjusted to 2 DEG C using cryogenic thermostat water bath, is unscrewed methane gas cylinder, is beaten
The first valve is opened, the second valve of steady rear opening is adjusted using the gas pressure that pressure regulator exports methane gas cylinder, passes through
Methane gas is slowly introducing in reaction kettle by air inlet, is detected in reaction kettle by the second pressure sensor installed on reaction kettle
Pressure condition, the amount of methane gas in reaction kettle is passed through according to gas flowmeter detection, when the pressure in reaction kettle reaches pre-
After constant-pressure, the second valve is closed, starts synthesis of natural gas hydrate, reaction kettle is detected by temperature sensor in synthesis process
In temperature change；
(5) micro- brill experiment：It is finished to gas hydrates synthesis, starts drilling machine, adjust drilling parameter, wherein drilling parameter packet
Bit pressure, revolving speed and vibration frequency are included, driving drilling tool carries out drilling experiment；Pass through second pressure sensor and temperature in drilling process
Sensor detects the variation of reactor temperature and pressure, is bored by drilling depth sensor, bit weight sensor, speed probe record
Into parameter, when drilling depth reaches predetermined depth, stops drilling, mention drilling through the heart；
(6) interpretation of result：Saturation degree test is carried out to rock core is drilled through, and combines corresponding drilling parameter, analyzes experimental data.
7. micro- brill experimental method is turned round in hydrate vibration in ocean according to claim 6, wherein reservoir material in step (2)
Specific step is as follows with filling for material preparation：1700g quartz sand, 1500g muscovite, 1100g calcite, 800g are weighed respectively and is covered takes off
Reservoir material point is imported in blender several times and is stirred as reservoir material by stone, 550g illite and 500g deionized-distilled water
Uniformly, the mixing material being stirred all is poured into the reaction kettle of pre-cleaning drying, while is rushed using deionized-distilled water
Blender is washed, and the deionized-distilled water for rinsing blender is poured into reaction kettle, the deionization used for rinsing blender steams
Distilled water is included in the dosage of total deionized-distilled water, and reservoir material is filled in reaction kettle, obtains simulation reservoir, simulation is stored up
Layer tamping, seals reaction kettle.
8. micro- brill experimental method is turned round in hydrate vibration in ocean according to claim 6, wherein anti-described in step (4)
Answering the predetermined pressure in kettle is 8MPa.
Priority Applications (1)
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