CN106872660A - A kind of deep water gas well surface shut-in stage gas hydrates growth simulation device - Google Patents
A kind of deep water gas well surface shut-in stage gas hydrates growth simulation device Download PDFInfo
- Publication number
- CN106872660A CN106872660A CN201611238375.7A CN201611238375A CN106872660A CN 106872660 A CN106872660 A CN 106872660A CN 201611238375 A CN201611238375 A CN 201611238375A CN 106872660 A CN106872660 A CN 106872660A
- Authority
- CN
- China
- Prior art keywords
- tubing string
- gas
- reaction
- hydrate
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 238000004088 simulation Methods 0.000 title claims abstract description 15
- 150000004677 hydrates Chemical class 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 94
- 238000006243 chemical reaction Methods 0.000 claims abstract description 88
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 239000003345 natural gas Substances 0.000 claims abstract description 35
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000012800 visualization Methods 0.000 claims description 6
- 230000005520 electrodynamics Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000001464 adherent effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 230000000750 progressive effect Effects 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 229910052594 sapphire Inorganic materials 0.000 claims description 2
- 239000010980 sapphire Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 10
- 239000012071 phase Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 9
- 239000007791 liquid phase Substances 0.000 description 7
- 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 description 5
- 230000006911 nucleation Effects 0.000 description 5
- 238000010899 nucleation Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 235000013847 iso-butane Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present invention relates to a kind of deep water gas well surface shut-in stage gas hydrates growth simulation device, it is made up of reaction tubing string, thermostatic control system, natural gas supply system, natural gas boosting system, liquid-supplying system, excretory system, parameter monitoring and data collecting system and terminal.The growing state of hydrate during deep water gas well test surface shut-in can be simulated using the device, obtain hydrate growth rule under the conditions of different water cut, temperature, pressure etc., so as to produce the feasibility of system for studying deep water gas well test " two open two passes ", reference is provided reasonably to formulate working system.
Description
Technical field
The present invention relates to deep water gas well exploration and development technical field, more particularly to closing well rank in deep water gas well test process
Section gas hydrates growth simulation device.
Background technology
Gas hydrates are the one kind formed under the conditions of the low temperature and certain pressure higher than freezing point by natural gas and water
Outward appearance is as ice but the crystal structure cage compound different from ice.Wherein, hydrone forms main body crystalline network by hydrogen bond,
Lighter hydrocarbons (methane, ethane, propane, iso-butane) or non-lighter hydrocarbons (nitrogen, carbon dioxide and hydrogen sulfide) are full of in hole in lattice
Molecule, i.e., so-called guest molecule.
During deep water gas well exploration and development, what is primarily formed is with methane CH4It is the methane hydrate of guest molecule.
Its formation needs experience nucleation and two stages of growth, and hydrate after nucleation, just can be after only in the case of condition is suitable
Continuous growth, otherwise growth course will not continue to carry out.The suitable growth conditions is：The circumnuclear solution of hydrate was in
Saturation state, surrounding environment has suitable cryogenic high pressure condition and good radiating condition, while gas liquid interfacial area is enough
Greatly, material is conducive to transmit.Many research at this stage is it has been proved that just driven a well in deep water gas well test process stage and pass
The well stage is two stages that gas hydrate synthesis block greatest risk.
The test job of current deep water gas well is from avoiding the angle formulation of gas hydrate synthesis, and not consider water
The process of compound growth.But during actual test, only when hydrate growth can just influence test job to a certain extent
Carrying out, and bring great trouble to work such as follow-up drilling, exploitations.If it is possible to be directed to deep water gas well closing well
Period hydrate growth situation provides a set of rational analogy method and device, certain by having to the formulation of test job system
Reference significance, be conducive to increasing economic efficiency, reduce potential safety hazard.
The content of the invention
For problem present in the exploitation of above-mentioned deep water gas well, the present invention provides closing well in a kind of deep water gas well test process
Stage hydrate growth analogue means.The life of hydrate during deep water gas well test surface shut-in can be simulated using the device
Situation long, obtains hydrate growth rule under the conditions of different water cut, temperature, pressure etc., so that for studying the survey of deep water gas well
Examination " two open two passes " produces the feasibility of system, and reference is provided reasonably to formulate working system.
Technical scheme is as follows：
Surface shut-in stage hydrate growth analogue means in a kind of deep water gas well test process, by reaction tubing string, constant temperature
Control system, natural gas supply system, natural gas boosting system, liquid-supplying system, excretory system, parameter monitoring and data acquisition system
System and terminal composition；Wherein：
It is described reaction tubing string be that water and natural solid/liquid/gas reactions provide place, its lower end respectively with the liquid-supplying system, the day
Right gas pressure charging system pipeline connection；The natural gas boosting system is connected with the natural gas supply system pipeline；The reaction
The upper end of tubing string is connected with the excretory system tubes；
The natural gas supply system is used to inject natural gas in reaction tubing string；
The natural gas boosting system is used to be pressurized the natural gas that the natural gas supply system is provided, and will react tubing string
Vacuumize；
The liquid-supplying system is used to inject liquid level in liquid, and maintenance reaction tubing string in reaction tubing string；
The drainage system is used to drain natural gas and liquid after reaction terminates；
The thermostatic control system includes the partial temperature control device, the built-in reaction tube that are arranged on the reaction tubing string
Second temperature controlling groove of the first temperature controlling groove of post and the built-in liquid-supplying system and the natural gas supply system；The constant temperature control
System processed be used for control reaction tubing string thermograde and bulk temperature, and liquid-supplying system and natural gas supply system temperature；
The parameter monitoring and data collecting system transfer data to meter by being arranged at the sensor of each examining system
Calculation machine terminal.
By the mutual cooperation of above-mentioned each system, surface shut-in rank in deep water gas well test process can be at utmost simulated
The hydrate growth situation of section, so as to obtain hydrate growth rule under the conditions of different water cut, temperature, pressure etc., is conducive to
Research deep water gas well test " two open two passes " produces the feasibility of system, and reference is provided reasonably to formulate working system.
Elaborated below for each system：
The reaction tubing string includes two kinds：A kind of is made of the stainless steel material that use can bear at least 30MPa pressure
Reaction tubing string；Another kind be use can bear that the sapphire or high strength glass of at least 10MPa pressure be made it is visual
Change reaction tubing string.
The reaction tubing string upper and lower ends are mounted on flange, and lower end blind flange sets an interface, the interface difference
It is connected with the natural gas boosting system, liquid-supplying system.
The position for installing various kinds of sensors is left on the reaction tubing string kettle.The side placement of visualization reaction tubing string
One video camera carries out shooting record to the hydrate growth situation in reaction tubing string, and image information is transferred into computer.
The reaction tubing string that stainless steel is made then measures hydrate layer growth thickness by hydrate thickness measure sensor, by meter
Calculation machine records hydrate growth data.Reaction tubing string is mainly hydrate generation and provides place, and the hydrate of generation can be attached to
On reaction tube post jamb.
The thermostatic control system consists predominantly of two temperature controlling grooves and a local temperature being placed on reaction tubing string
Control device.
The water and natural gas temperature for being used to adjust in control injection reaction tubing string in the temperature controlling groove, one is used to control
The integrated environment temperature of system reaction tubing string.
The temperature that the partial temperature control device is used to adjust diverse location in reaction tubing string tests its simulation deep water
During thermo parameters method in test string, so as to control hydrate growth speed, control water evaporation speed.The Temperature Distribution
Be not it is single be incremented by or the single thermograde successively decreased, and be divided into two sections (i.e. from sea level to mud line lapse of temperature, from
Mud line is incremented by gas reservoir depth temperature).The partial temperature control device is realized to Temperature Distribution by two sections of temperature adjustments
The simulation of field, first by the integral tube column temperature of temperature controlling groove reduction reaction tubing string, then heats to tubing string local location,
Change tubing string thermo parameters method, simulated field actual conditions.For obstructed gas reservoir, different oceans, different temperature are might have,
Therefore, the adjustable temperature range of partial temperature control device is between 0-90 DEG C.
The natural gas supply system is used to, to injection experimentses natural gas gas in reaction tubing string, mainly include a gas tank
With an intake valve；
The natural gas boosting system mainly includes a booster pump and a vavuum pump.The booster pump comes for being pressurized
From the natural gas exported in the natural gas supply system and adjust reaction tubing string in reaction pressure.The natural gas supply system
The gas of middle output first pass around the natural gas boosting system booster pump supercharging reinject reaction tubing string in.The vavuum pump
For before gas injection vacuum state will to be evacuated in reaction tubing string.
The liquid-supplying system mainly includes liquid feed valve, an electrodynamic pump and a water supply tank.The liquid-supplying system is used
Liquid, liquid level in maintenance reaction tubing string are provided in reaction tubing string.
The excretory system mainly includes a bleed valve and a sluicing tank.
The parameter monitoring and data collecting system mainly include gas flowmeter, fluid flowmeter, one
Fluid temperature sensor, four temperature sensors, two gas pressure sensors, a hydrate layer ultrasonic thickness sensings
Device, a hygrometer.The parameter monitoring and data collecting system be used to monitor gas and liquid-consumed situation in reaction tubing string,
The parameter such as thickness, reaction time of hydrate layer and gathering is transferred on temperature, pressure humidity situation of change, reaction pipe string internal wall
Terminal.
All pipeline connected modes use anti-high pressure stainless steel tubing in the present invention.
The present invention still further provides the method for judging gas hydrate synthesis degree of risk using above-mentioned analogue means：Anti-
Answer in tubing string, hydrate is grown with adherent manner, and the progressive additive in the form of hydrate layer.Hydrate layer is preferential in tubing string
Position growth at simulation mud line, each position hydrate adherent growth speed of tubing string is different.If within the closed-in time, hydration
Nitride layer is grown and thoroughly blocks pit shaft, then under the conditions of the temperature, pressure, be not suitable for using surface shut-in form, and the reduction that should try one's best is opened
Closing well number of times, hydrate braking measure is taken according to actual conditions.If hydrate layer forms certain thickness but not yet blocks whole
Individual tubing string, can judge whether to constitute blocking risk according to the situation after driving a well again.Specific determination methods are as follows：
Assuming that tube wall hydrate thickness is d, then gas flow profile radius is R=(L-2d)/2, gas flowing speed at this
Spend and be：
L is mineshaft diameter, m in formula；Q is gas flow, m3/d。
Then make a concerted effort suffered by wall hydrate particle be：
F=Ff-Gcosθ-Fc
Gravity, drag etc. are substituted into can be obtained
When hydrate particle is in stress balance critical condition, F=0, then have with joint efforts
Now gas flow section radius is：
Now hydrate thickness
Work as R>During r, show to reduce with gas flow pattern area, drive a well again in the case of determining production Q, gas flow rate in pit shaft
Increase, correspondence drag increases, and hydrate cannot form cohesion and block in pit shaft.
Work as R<During r, show that drag cannot be carried to well head hydrate in the case where this drives a well yield, can form in pit shaft
Block.
Scheme of the present invention has technical effect that：
(1) double temperature controller system, including temperature controlling groove and local temperature control equipment simulation well shut-in period pit shaft are utilized
Interior thermo parameters method so that hydrate formation zone distinguishes with reaction tubing string bottom water evaporation regional temperature, farthest
Close in on-the-spot test work using the actual conditions of surface shut-in；
(2) present invention devises two kinds of reaction tubing strings, is suitable for the life of different pressures condition Imitating surface shut-in hydrate
Situation long.Under lower pressure attachment position of the hydrate on reaction tubing string can be observed directly using visualization tubing string.Together
When two reaction tubing strings can by data collecting system measure gas phase and liquid phase flow pressure change, calculate generation hydrate
Gas phase and the consumption of liquid phase, with reference to the numerical value of hydrate layer thickness transducer, can obtain hydrate in reality in growth course
The speed of growth under the conditions of testing, the carrying out worked on-the-spot test is with directive function；
(3) with hydrate growth situation be combined well shut-in period water-gas distribution rule by the present invention, by changing reaction tube
Reacting the temperature of tubing string in post at liquid level size, hydrops just influences the speed of water vapor diffusion；According to different liquid levels
Highly, gas hydrate synthesis risk situation under temperature conditions, when proposition works for on-the-spot test, different reservoir temperature, hydrops
Whether height should take hydrate braking measure.
Brief description of the drawings
Fig. 1 is that deep water gas well tests surface shut-in hydrate growth situation schematic diagram.
Fig. 2 is that gas is hydrate growth schematic diagram in the case of continuous phase in deep water gas well test string.
Fig. 3 is droplet formation hydrate growth schematic diagram in deep water gas well test string.
Fig. 4 is that deep water gas well tests surface shut-in hydrate growth analogue means operation principle block diagram.
Fig. 5 is the system diagram of aqueous vapor well test surface shut-in hydrate growth analogue means.
Fig. 6 is pressure-resistant reaction tubular column structure figure.
In figure：
1st, tubing string is reacted；2nd, thermostatic control system；2-a, temperature controlling groove；2-b, temperature controlling groove；3rd, blind flange；4th, gas flow
Meter；5th, air valve；6th, booster pump；7th, gas tank；8th, liquid feed valve；9th, water supply tank；10th, fluid flowmeter；11st, electrodynamic pump；12nd, vacuum
Pump；13rd, bleed valve；14th, tank is drained；15th, computer；16th, hydrate layer thickness measuring；17th, intake air temperature sensor；
18th, air inlet pressure sensor；19th, fluid temperature sensor；20th, partial temperature control device；21st, TEMP in reaction tubing string
Device；22nd, hygrometer；23rd, gas pressure sensor；24th, fluid-infusing port；25th, temperature sensor mounting interface；26th, pressure is passed
Sensor mounting interface；27th, fluid discharge outlet；28th, humidity flowmeter sensor mounting interface；29th, tubing string partial temperature control device；
30th, video camera；31st, hydrate thickness ultrasonic sensor mounting interface.
Specific embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Fig. 2 is that deep water gas well tests surface shut-in stage hydrate growth schematic diagram, is directed to hydrate in test string
Growth establish the growth characteristics model of " water-sprinkling icing " formula.Deep water gas well tests shut-in period, and gas phase is in test string
Continuous phase, is dissolved with water vapour molecule in gas phase, be in addition also entrained with a small amount of droplet.After surface shut-in, test string
Liquid phase on inwall is main to be existed in the form of liquid film, because closing well fluid does not flow, liquid film can under gravity gradually to
Shaft bottom slides.Vapor in pit shaft is transported in motion process doing random free movement, some of them water vapour molecule
Move at the liquid film on testing tube post jamb, because the nucleation of hydrate is heterogeneous nucleation, occur at gas-liquid interface, therefore hydration
Nucleation and grown at the liquid film surface that thing can be on testing tube post jamb, vapor is consumed with methane herein.Due to vapor
Consumption cause and there is concentration difference in pit shaft, in the presence of concentration difference, the water in shaft bottom can evaporate hydrone, and these water steam
Qi leel can diffuse up to hydrate formation zone and continue to promote hydrate growth.Hydrate layer is the membranaceous knot with hole
Structure, with liquid phase by hole diffusion contact, hydrate constantly grows gas phase.With the growth of hydrate, hole can be tapered into,
Until being full of by hydrate completely.Now gas phase is separated with liquid phase, it is impossible to further nucleating growth.If in test string
Inwall on still remain liquid film, liquid film can further migration downwards under gravity, finally leave behind hydrate layer attached
On test string inwall.
Fig. 3 is droplet formation hydrate growth schematic diagram in deep water gas well test string.In shut-in period, except being dissolved in
Outside water vapour molecule in gas phase, some a small amount of misty liquid droplets are also there are.These misty liquid droplets in the wellbore with gas phase
Molecule is fully contacted, and can form very thin hydrate film in gas and drop contact interface first, and hydrate film is with hole
Structure, gas molecule in space and liquid phase molecule transmitted by hole, and the liquid in film is constantly consumed, and hydrate film is gradually thickening, water
Compound grows.For less drop, hydrate particle is may eventually form, hydrate particle can be downward under gravity
Slide, to connect be possible to when running into the borehole wall and stagnate and stick on test string inwall.For larger drop, in growth step
Section later stage hydrate film is thicker, hinders the diffusion of liquid phase and gas molecule in space, therefore late growing stage speed is slow, may eventually form
The internal hydrate particle containing liquid.
Fig. 4 is the system diagram that deep water gas well tests hydrate growth analogue means, and the deep water for the invention tests ground
Well shut-in period hydrate growth simulated experiment step carries out following explanation, and (reaction tubing string visualizes reaction tube using pressure-resistant 10MPa
Post)：
(1) pretreatment reaction tubing string：After detection reaction tube column sealing performance, reaction tubing string is rinsed.Pretreatment
Reaction tubing string afterwards is connected with other devices and checks that pipeline junction seals situation, and now all valves are closed.
(2) reaction tubing string treatment：To be reacted using vavuum pump 12 and vacuum state is evacuated in tubing string, close vavuum pump 12.
(3) temperature control：Temperature at the mud line of seabed will be reacted in the temperature control of tubing string 1 to test process using temperature controlling groove 2-a
Degree situation, temperature regime in gas reservoir is adjusted into test process using temperature controlling groove 2-b by temperature in gas tank 7 and water supply tank 9.Adjustment
20 pairs of reaction tubing strings of partial temperature control device are heated, and change temperature distribution state in reaction tubing string, the gas well test of simulation deep water
During test string temperature field situation.
(4) injection experimentses liquid：Liquid feed valve 8 is opened, liquid level is observed by visualizing reaction tubing string, using electrodynamic pump
11, to required experimental liquid to specified altitude assignment is pumped into reaction tubing string, close liquid feed valve 8 and electrodynamic pump 11.
(5) injection experimentses gas：Intake valve 5 and booster pump 6 are opened, is supplied and is pressurized in reaction tubing string, by reaction
The monitoring reaction tubing string internal pressure power size of gas pressure sensor 23 in tubing string, when experimental pressure is reached in reaction tubing string, closes
Close intake valve 5 and booster pump 6, monitoring reaction tubing string internal pressure power, if can keep a period of time stablize it is constant by carry out it is next
Step operation.
(6) record is shot：Video camera is opened after the completion of the operation of regulation experiment temperature to hydrate formation zone in reactor
Carry out shooting record.
(7) hydrate growth process：Start to start timing while shooting, according to hydrate layer thickness measuring 16
Transmit the growing state of the Imaging Study hydrate layer shot to the data and video camera of computer 15.
(8) drainage exhaust：Reach experiment specify the time after, open bleed valve 13 release reaction tubing string in gas, open into
Liquid valve 5 drains into water supply tank 9 the remaining water in reaction tube column bottom.The ring flange plug 3 on reaction tubing string 1 is laid down, observation is anti-
Answer hydrate layer growing state in tubing string.
(9) parameter detecting and data acquisition processing system working condition：In the monitoring injection reaction tubing string of gas flowmeter 4
Gas flow；Fluid flow in the monitoring injection reaction tubing string of fluid flowmeter 10；The monitoring injection of intake air temperature sensor 17 is anti-
Gas temperature in tubing string is answered, for partial temperature control device provides temperature reference；The monitoring reaction tube note of fluid temperature sensor 19
Enter to react the fluid temperature in tubing string, for temperature control equipment provides temperature reference；Gas pressure sensor 23 is monitored in tubing string
Reaction tubing string internal pressure power size, for pressure charging system provides reference；In tubing string in the monitoring reaction course of temperature sensor 21 in tubing string
Temperature, for partial temperature control device provides reference；Tubing string is reacted during the monitoring hydrate growth of hygrometer 22 include water rate
Change；Hydrate layer thickness transducer 16 monitors the growth thickness change of hydrate layer during hydrate growth.In system
All the sensors monitoring parameter while the data transfer that will collect to computer, in order to be directed to hydrate growth situation
Carry out quantitative analysis.By the parameter for collecting and its variation tendency, deep amount can be carried out to the growth course of hydrate
Change research, so that the formulation of the working system to deep water gas well test process provides reference.
The experimental procedure for reacting tubing string using pressure-resistant 30MPa is basically identical with using pressure-resistant 10MPa reaction tubes column experiments, by
It is not visible in pressure-resistant 30MPa reaction tubing strings, therefore omit step (7).
Fig. 6 be system diagram in reaction tubular column structure figure, before the experiments were performed, first to reaction tubing string in be passed through gas with
Sealing between inspection reaction tubing string and blind flange, is connected with the device of other systems again after confirming favorable sealing property.
Pressure-resistant 10MPa visualizations reactor is consistent with pressure-resistant 30MPa reactors structure, but difference is：Visualization reactor can be straight
Naked eyes or video camera was connected to record hydrate growth process, non-visualization reactor due to need using pressure-resistant degree compared with
Material high, is merely able to be monitored by ultrasonic sensor the growing state of hydrate.
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (7)
1. a kind of deep water gas well surface shut-in stage gas hydrates growth simulation device, it is characterised in that by reaction tubing string,
Thermostatic control system, natural gas supply system, natural gas boosting system, liquid-supplying system, excretory system, parameter monitoring and data are adopted
Collecting system and terminal are constituted；Wherein：
It is described reaction tubing string be that water and natural solid/liquid/gas reactions provide place, its lower end respectively with the liquid-supplying system, the natural gas
Pressure charging system pipeline is connected；
The natural gas boosting system is connected with the natural gas supply system pipeline；
The upper end of the reaction tubing string is connected with the excretory system tubes；
The thermostatic control system includes the partial temperature control device, the built-in reaction tubing string that are arranged on the reaction tubing string
Second temperature controlling groove of the first temperature controlling groove and the built-in liquid-supplying system and the natural gas supply system；
The parameter monitoring and data collecting system transfer data to computer by being arranged at the sensor of each examining system
Terminal.
2. deep water gas well surface shut-in stage gas hydrates growth simulation device according to claim 1, its feature
It is that the reaction tubing string is divided to two kinds：A kind of is that use can bear the reaction that the stainless steel material of at least 30MPa pressure is made
Tubing string；Another kind is that use can bear the visualization reaction that the sapphire or high strength glass of at least 10MPa pressure are made
Tubing string.
3. deep water gas well surface shut-in stage gas hydrates growth simulation device according to claim 1 and 2, it is special
Levy and be, the partial temperature control device in the thermostatic control system adjusts temperature range between 0-90 DEG C.
4. according to any described deep water gas well surface shut-in stage gas hydrates growth simulation devices of claim 1-3,
Characterized in that, the natural gas supply system includes a gas tank and an intake valve, for real to injection in reaction tubing string
Test natural gas gas；
The natural gas boosting system includes a booster pump and a vavuum pump；The booster pump comes from described for supercharging
The natural gas of natural gas supply system output simultaneously adjusts reaction pressure in reaction tubing string.
5. according to any described deep water gas well surface shut-in stage gas hydrates growth simulation devices of claim 1-4,
Characterized in that, the liquid-supplying system includes liquid feed valve, an electrodynamic pump and a water supply tank；For in reaction tubing string
Liquid level in liquid and maintenance reaction tubing string is provided.
6. according to any described deep water gas well surface shut-in stage gas hydrates growth simulation devices of claim 1-5,
Characterized in that, the parameter monitoring and data collecting system include gas flowmeter, fluid flowmeter, a liquid
Temperature sensor, four temperature sensors, two gas pressure sensors, hydrate layer ultrasonic thickness sensor,
One hygrometer；For monitoring gas and liquid-consumed situation, temperature, pressure humidity situation of change, reaction tubing string in reaction tubing string
The thickness of hydrate layer on inwall, reaction time and collection is transferred to terminal.
7. a kind of any analogue means of utilization claim 1-6 judges the method that gas hydrates form degree of risk：
Hydrate is grown in reaction tubing string with adherent manner, and the progressive additive in the form of hydrate layer；
If within the closed-in time, hydrate layer grows and thoroughly blocks pit shaft, then under the conditions of the temperature, pressure, be not suitable for using
Surface shut-in form, should reduce switch well number of times, and hydrate braking measure is taken according to actual conditions；
If hydrate layer forms certain thickness but not yet blocks whole tubing string, judged whether according to the situation after driving a well again
Constitute and block risk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611238375.7A CN106872660B (en) | 2016-12-28 | 2016-12-28 | Deepwater gas well ground shut-in stage natural gas hydrate growth simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611238375.7A CN106872660B (en) | 2016-12-28 | 2016-12-28 | Deepwater gas well ground shut-in stage natural gas hydrate growth simulation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106872660A true CN106872660A (en) | 2017-06-20 |
| CN106872660B CN106872660B (en) | 2020-06-26 |
Family
ID=59164119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611238375.7A Expired - Fee Related CN106872660B (en) | 2016-12-28 | 2016-12-28 | Deepwater gas well ground shut-in stage natural gas hydrate growth simulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106872660B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486795A (en) * | 2020-05-28 | 2020-08-04 | 中国石油大学(华东) | Experimental device and method for researching growth and deposition of natural gas hydrate film in gas transmission pipeline |
| CN115629165A (en) * | 2022-12-21 | 2023-01-20 | 东北石油大学三亚海洋油气研究院 | Method for calculating natural gas hydrate growth speed in well shaft under intervention operation |
| CN117010602A (en) * | 2023-10-07 | 2023-11-07 | 广东海洋大学 | Method for processing data of drilling and production well bore of natural gas hydrate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762565A (en) * | 2005-09-20 | 2006-04-26 | 南京工业大学 | Complete equipment system for simulating synthesis and decomposition of natural gas hydrate and reaction kettle |
| CN101246117A (en) * | 2008-03-25 | 2008-08-20 | 中国科学院力学研究所 | Gas-hydrate synthesizing and macro-microscopic mechanics nature synthetic experiment system |
| CN101451985A (en) * | 2008-12-24 | 2009-06-10 | 大连理工大学 | Detection device for synthesizing and decomposing gas hydrate |
| CN101710088A (en) * | 2009-12-17 | 2010-05-19 | 中国海洋石油总公司 | Method and device for testing formation and decomposition of gas hydrate |
| CN102141560A (en) * | 2010-12-23 | 2011-08-03 | 中国科学院广州能源研究所 | Visual gas hydrate experimental device |
| CN102865066A (en) * | 2012-10-16 | 2013-01-09 | 中国石油大学(华东) | Experiment device and method for deepwater shaft multiphase flow containing natural gas hydrate phase changes |
| CN103645285A (en) * | 2013-12-17 | 2014-03-19 | 中国海洋石油总公司 | Visualized natural gas hydrate simulation test device and method |
| CN204556598U (en) * | 2015-04-22 | 2015-08-12 | 中国石油大学(华东) | A kind of hydrate slurry sedimentary simulating experiment device |
| CN105201487A (en) * | 2015-09-02 | 2015-12-30 | 中国海洋石油总公司 | Method and device for monitoring hydrate blockage of shaft in production period of deepwater gas field |
-
2016
- 2016-12-28 CN CN201611238375.7A patent/CN106872660B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762565A (en) * | 2005-09-20 | 2006-04-26 | 南京工业大学 | Complete equipment system for simulating synthesis and decomposition of natural gas hydrate and reaction kettle |
| CN101246117A (en) * | 2008-03-25 | 2008-08-20 | 中国科学院力学研究所 | Gas-hydrate synthesizing and macro-microscopic mechanics nature synthetic experiment system |
| CN101451985A (en) * | 2008-12-24 | 2009-06-10 | 大连理工大学 | Detection device for synthesizing and decomposing gas hydrate |
| CN101710088A (en) * | 2009-12-17 | 2010-05-19 | 中国海洋石油总公司 | Method and device for testing formation and decomposition of gas hydrate |
| CN102141560A (en) * | 2010-12-23 | 2011-08-03 | 中国科学院广州能源研究所 | Visual gas hydrate experimental device |
| CN102865066A (en) * | 2012-10-16 | 2013-01-09 | 中国石油大学(华东) | Experiment device and method for deepwater shaft multiphase flow containing natural gas hydrate phase changes |
| CN103645285A (en) * | 2013-12-17 | 2014-03-19 | 中国海洋石油总公司 | Visualized natural gas hydrate simulation test device and method |
| CN204556598U (en) * | 2015-04-22 | 2015-08-12 | 中国石油大学(华东) | A kind of hydrate slurry sedimentary simulating experiment device |
| CN105201487A (en) * | 2015-09-02 | 2015-12-30 | 中国海洋石油总公司 | Method and device for monitoring hydrate blockage of shaft in production period of deepwater gas field |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486795A (en) * | 2020-05-28 | 2020-08-04 | 中国石油大学(华东) | Experimental device and method for researching growth and deposition of natural gas hydrate film in gas transmission pipeline |
| CN111486795B (en) * | 2020-05-28 | 2021-11-12 | 中国石油大学(华东) | Experimental device and method for researching growth and deposition of natural gas hydrate film in gas transmission pipeline |
| CN115629165A (en) * | 2022-12-21 | 2023-01-20 | 东北石油大学三亚海洋油气研究院 | Method for calculating natural gas hydrate growth speed in well shaft under intervention operation |
| CN117010602A (en) * | 2023-10-07 | 2023-11-07 | 广东海洋大学 | Method for processing data of drilling and production well bore of natural gas hydrate |
| CN117010602B (en) * | 2023-10-07 | 2023-12-19 | 广东海洋大学 | Method for processing data of drilling and production well bore of natural gas hydrate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106872660B (en) | 2020-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109681198B (en) | Multi-mode exploitation simulation device and method for different types of natural gas hydrate reservoirs | |
| CN105277660B (en) | The device and method in decomposition of hydrate region under the different drilling method of monitoring | |
| CN106593370B (en) | Natural gas hydrate depressurization exploitation simulation experiment device and working method | |
| CN108490151B (en) | Hypergravity simulation system for depressurization exploitation of natural gas hydrate | |
| CN106869871B (en) | The device and method that gas removes water outlet of shaking out in hydrate well is produced using bottom | |
| CN110286206B (en) | Experimental device and method for evaluating dynamic formation of hydrate in oil and gas drilling | |
| CN110630228A (en) | Evaluation of CO2/N2Device and method for shaft sand production and prevention during hydrate exploitation by displacement method | |
| CN109209337A (en) | A kind of horizontal well drilling lubricity experimental provision and experimental method considering cutting bed | |
| CN104895560B (en) | A kind of deep water test wellbore pressure, temperature field simulation and Hydrate Prediction method | |
| CN107842341A (en) | A kind of exploitation of gas hydrates monitoring analogue means and method | |
| CN107024428B (en) | A kind of experimental provision and its working method visualizing hydrate wall surface adhesion mechanics characteristic | |
| CN101532936A (en) | Method and device for evaluating inhibiting ability of drilling fluid on formation and decomposition of hydrate | |
| CN109236281B (en) | Device and method for detecting annular pressure of gas storage and natural gas well | |
| CN106872660A (en) | A kind of deep water gas well surface shut-in stage gas hydrates growth simulation device | |
| CN102109513A (en) | Physical property detection experimental device for three-dimensional (3D) generation and exploitation of natural gas hydrate | |
| CN203931312U (en) | CO 2replacement exploitation of gas hydrate experiment simulator | |
| CN108318633A (en) | A kind of seabed exploit induced disaster experimental simulation research device and experimental method without overlying densification cap rock hydrate | |
| CN112282705A (en) | Evaluation device and experimental method for phase stability of drilling fluid additive to natural gas hydrate | |
| CN110454146A (en) | The device and method to shake out in horizontal well with sand control in evaluation hydrate recovery process | |
| CN103470220A (en) | Natural gas hydrate simulation experiment device | |
| CN106226139B (en) | The synthesis and monitoring method of hydrate in a kind of permafrost region consolidated rock sample | |
| CN105822264B (en) | Gas hydrates layer bored shaft hydrate dynamic Decomposition method for detecting position | |
| CN211201912U (en) | Device for evaluating wellbore sand production and prevention during hydrate exploitation by CO2/N2 displacement method | |
| CN107542450B (en) | A kind of pipeline monitoring system for exploitation of gas hydrates | |
| CN110159227B (en) | Device and method for simulating heating in natural gas hydrate well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200626 Termination date: 20201228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |