CN107271323A - A kind of decomposition of hydrate gas real-time measurement instrument - Google Patents
A kind of decomposition of hydrate gas real-time measurement instrument Download PDFInfo
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- CN107271323A CN107271323A CN201710583724.7A CN201710583724A CN107271323A CN 107271323 A CN107271323 A CN 107271323A CN 201710583724 A CN201710583724 A CN 201710583724A CN 107271323 A CN107271323 A CN 107271323A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
- G01N7/16—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference by heating the material
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Abstract
The invention discloses a kind of decomposition of hydrate gas real-time measurement instrument.This experimental provision measures the gas burst size in hydrate decomposable process in rock core using drainage.Device can control reactor temperature and be tested, and wherein hydrate is decomposed in rock core, and discharge water conservancy with electronics balance measurement and carries out real-time collecting using data acquisition unit.Processing data draws in rock core decomposition gas volume change curve and decomposition gas rate of release versus time curve in hydrate decomposable process.When decompose terminate can obtain decompose terminate decomposition gas burst size.After destroy rock core, hydrate in release rock core, measurement now total decomposition of hydrate gas burst size in rock core.It is to decompose residual volume proportion to subtract each other both numerical value and total decomposition of hydrate gas burst size ratio.
Description
Technical field
It is gas hydrates temperature control decomposable process in a kind of rock core the present invention relates to decomposition of hydrate monitoring technical field
In can measure in real time decomposition gas volume and measure decompose terminate the decomposition gas residual volume of rock core containing hydrate device.
Background technology
At present, the exploitation attention rate of people's hydrate is just gradually stepped up, and understands the decomposition situation of hydrate to instruct hydration
The exploitation of thing turns into focus of attention.Chinese the mouth of the Zhujiang River Shenhu sea area gas hydrates (combustible ice) were on May 10th, 2017
Igniting pilot production, yield originally is very big, but over time, also quickly, pilot production just has 3.5 in first day to the rate of decay of yield
Ten thousand cubes of yield, but pilot production carry out 31 days after total gas production reach 21 ten thousand steres, averagely produce daily 6800 cubic metres.
The research for actively developing decomposition of hydrate situation is extremely important.
Decomposition of hydrate situation in rock core is studied in the lab, for the decomposition situation of hydrate in analysis actual formation
There is directive significance.The dynamics research for decomposition of hydrate, which not enough, is now typically used, at present sets up model qualitative analysis, then leads to
Experiment quantitative data computation model parameter is crossed to be studied.Now to decomposition data quantitative measurment typically using complicated sensor
The instrument of group design is measured.This quasi-instrument is complex and costliness, and this measurement means are not suitable for common laboratory
Experimental study.To solve the problem, it is necessary to which common laboratory equipment, simple in construction, simple operation, warp can be utilized by designing one kind
Ji material benefit can be widely used in the laboratory apparatus under common experimental conditions.Found investigate simultaneously in not to hydrate in rock core point
The research in terms of the measurement of residual volume is solved, decompose residual volume has certain guidance meaning for live recovery ratio, therefore is designed to
The device of measurement decomposition of hydrate residual volume, which is able to measure the item data, analyzes significant.
The content of the invention
Problem to be solved by this invention is to be received for existing utility and the imperfection of technology there is provided one kind using drainage
The decomposition of hydrate gas real-time measurement instrument of collection measurement decomposition of hydrate tolerance.
Technical scheme is as follows：
The experimental method and device of a kind of real-time measurement decomposition gas volume, constant pressure airtight space carries out decomposition of hydrate, water
Compound volume reduces, and due to gas volume increase in the generation space of decomposition gas, and gas volume increase is much larger than hydrate
Volume decomposition decrement, it is believed that gas volume increase is decomposition of hydrate air volume in space.Chemical instrument is connected in seal
Reaction-the drain vessel for having air water two-phase and fixed volume in water manufacture is added in device, reaction is used as using its gas-phase space part
It is constant pressure airtight space that device, which is approximately considered internal, can separate confined space by valve and separate the unnecessary gentle phase of aqueous phase, point
Reaction unit, which can be opened, every state adds rock core containing hydrate to be measured thereto.Reaction unit is connected to above drainage arrangement, even
Logical state fluid column, which produces pressure, swabbing action to reaction unit, and hydrate is decomposed wherein, the downward displacement liquid phase of gas phase, is driven
Discharged in water from container, discharge water volume is equal to space gases increase volume and is also equal to decomposition of hydrate air volume.Pass through number
The changing rule for gathering discharge water quality according to acquisition system is to calculate the volume of water using V=m/ ρ to show that decomposition gas is real
Shi Tiji.Constant water bath box provides required steady temperature to reaction unit, then to the gas phase portion close to aqueous phase to output gas
It is condensed into unified steady temperature and carries out draining.Connection can store the appearance that rock core destroys liquid by what valve was separated above reaction unit
Device, can inject liquid into reaction unit using liquid gravity but does not change existing after the completion of normal decompose by opening valve
Gas liquid cumulative volume in device, internal residual hydrate continues to decompose after rock core destruction, and residual gas in the same fashion arrange by displacement
Go out water gaging to obtain decomposing residual gas volume.
Brief description of the drawings：
Fig. 1 is the structural representation according to decomposition of hydrate gas real-time measurement instrument of the present invention.
In figure：1-constant pressure separatory funnel；2,3,8,14-valve；4,7-tool valve bent sub；5-three mouthfuls of opening reactions
Device；6-constant water bath box；9,11,15-sealedly guide coupling；10-condenser pipe；12-bent sub；13-pyriform point liquid
Funnel；16-drainage duct；17-beaker；18-electronic balance；19-data collector；20-iron stand.
Embodiment：
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1 carries out the principle and implementation steps of decomposition of hydrate tolerance measurement experiment using drainage
All valves are closed before attachment means.Correspondence detection rock core is first put into before attachment means in constant pressure separatory funnel 1
Rock core destruction liquid and to top seal processing, load enough water in pear shape separatory funnel 13.Three mouthfuls of opening reactors 5 are by upper
The three mouthfuls of reactor caps in side and lower section bucket type container composition, bucket type container is immersed in constant water bath box 6 and carrys out temperature in control container,
Three mouthfuls of reactor caps can make during fluid injection rock core destroy liquid to vertical connection constant pressure separatory funnel 1 in suitable for reading, and haptoreaction wall is not erected
It is straight enter reactor in, the left and right sides mouth connection tool valve bent sub 4, tool valve bent sub 7 respectively.Right side has valve bent sub
7 and one end of condenser pipe 10 connected using sealed guide coupling 9 constant temperature be cooled to the gas phase of right side displacement aqueous phase
Degree.The other end of condenser pipe 10 using sealed guide coupling 11 with equally bent sub is connected, and the access pears type of bent sub 10 divides liquid
In the top interface of funnel 13 and pear shape separatory funnel is fixed with iron stand 20, gas phase displacement liquid phase from top to bottom.Pyriform
The lower section mouth of pipe of separatory funnel 13 connects drainage duct 16 using sealed guide coupling 15, and drainage duct 16 gos deep into beaker 17,
But not contacting beaker 17, this is to prevent discharge current from making the shake of drainage duct 16 tap beaker influence balance reading, and drainage duct
16 mouths of pipe can not be excessively near away from the bottom of beaker 17, and this is to prevent the mouth of pipe of drainage duct 16 from getting too close to current in the bottom of beaker 10, conduit mouth
Impact on the bottom of beaker 10 can influence balance reading.Beaker is placed on electronic balance 18, the connection Data Collection of electronic balance 18
Device 19 carries out real-time data acquisition.Device is connected, just can be tested.
When being tested, need first to carry out air-leakage test to device, open valve 8, valve 14, at this moment whole device only has
The connection of the side of drainage duct 16 is extraneous below pear shape separatory funnel, if at this moment the fluid column without decline proves device in drainage duct 16
Connect air-tightness good.Device air-tightness is checked out, three mouthfuls of opening reactors 5 of constant water bath box 6 pair is opened and carries out a period of time
Preheating, while starting to be passed through condensate liquid in condenser pipe 10, remove influence of the temperature to gas volume.Valve 3, order row are opened afterwards
Water conduit 16 is full of by fluid column, continues to discharge water until liquid level did not had closing valve 3 after the mouth of pipe of drainage duct 16 in beaker 17, this is
Prevent the mouth of pipe of experiment drainage duct at initial stage 16 hanging, current accelerate on beaker 17 impact in atmosphere to influence balance to read
Number.To prevent from opening pear shape separatory funnel reclaimed water excessive bleed during three mouthfuls of opening reactors 5 are put into rock core to be measured, close
Valve 8 is closed after valve 3.Electronic balance 18 is returned to zero, rear three mouthfuls of opening reactors 5 of opening will test rock core containing hydrate
It is put into.Valve 8 is opened at once after closing three mouthfuls of opening reactors 5, and device starts draining with decomposition of hydrate, and electronic balance 18 is read
Number changes therewith, while passing through data collecting system collection discharge water quality to the real-time record of balance reading using data collector
The changing rule of amount is to calculate the volume of water to draw decomposition gas real-time volume using V=m/ ρ.Treat that balance reading no longer becomes
Change to prove to decompose and complete, record final reading is used as decomposition gas maximum.Now opening valve 2 makes in constant pressure separatory funnel 1
Rock core destruction liquid is flowed into three mouthfuls of opening reactors 5, rock core destruction is further decomposed deflation so as to remaining hydrate.Complete rock
The heart is destroyed, and treats balance reading stable recording balance reading as decomposition gas total amount.Decomposition gas residual volume proportion=(decomposition gas is total
Amount-decomposition gas maximum)/decomposition gas total amount.
Claims (9)
1. a kind of decomposition of hydrate gas real-time measurement instrument.Mainly include：Core destroying means based on constant pressure separatory funnel；
Decomposition gas reaction unit based on three mouthfuls of opening reactors, constant water bath box, condenser pipe；Based on pyriform funnel, beaker
Drainage arrangement, the transacter based on electronic balance, data acquisition unit.It is characterized in that：Hydrate is in reaction unit
Interior constant temperature decomposes aerogenesis displacement drainage arrangement reclaimed water, decomposes end and destroys rock core to residual gas draining with core destroying means, by
Transacter data acquisition.
2. decomposition of hydrate gas real-time measurement instrument according to claim 1, it is characterised in that：Under three mouthfuls of opening reactors
Side is immersed in constant water bath box, and the environment temperature of decomposition of hydrate is by bath temperature control.
3. decomposition of hydrate gas real-time measurement instrument according to claim 1, it is characterised in that：Reactor and pyriform funnel
Between connection condenser pipe be a certain steady temperature to the gas cooling of displacement aqueous phase.
4. decomposition of hydrate gas real-time measurement instrument according to claim 1, it is characterised in that：Reaction unit is connected to row
Above water installations, the downward displacement liquid phase of gas phase.
5. decomposition of hydrate gas real-time measurement instrument according to claim 1, it is characterised in that：Gas phase is in drainage arrangement
The volume of the aqueous phase of institute's displacement is decomposition gas volume.
6. decomposition of hydrate gas real-time measurement instrument according to claim 1, it is characterised in that：Discharged by the water of displacement,
Collect, balance is weighed, volume is calculated using V=m/ ρ.
7. decomposition of hydrate gas real-time measurement instrument according to claim 1, it is characterised in that：Its flushconnection data acquisition
Device, device continuous drainage, balance registration real-time change can show that numerical value is recorded in real time to balance.
8. decomposition of hydrate gas real-time measurement instrument according to claim 1, it is characterised in that：The constant pressure of connection point liquid leakage
Bucket can carry out constant pressure fluid injection.
9. decomposition of hydrate gas real-time measurement instrument according to claim 1, it is characterised in that：Store rock core destruction liquid
Constant pressure separatory funnel is connected to above reaction unit, opens valve, destruction liquid is flowed into reaction unit by gravity and rock core contacts broken
Bad rock core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710583724.7A CN107271323B (en) | 2017-07-18 | 2017-07-18 | Real-time measuring instrument for hydrate decomposition gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710583724.7A CN107271323B (en) | 2017-07-18 | 2017-07-18 | Real-time measuring instrument for hydrate decomposition gas |
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| Publication Number | Publication Date |
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| CN107271323A true CN107271323A (en) | 2017-10-20 |
| CN107271323B CN107271323B (en) | 2020-07-31 |
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| CN201710583724.7A Expired - Fee Related CN107271323B (en) | 2017-07-18 | 2017-07-18 | Real-time measuring instrument for hydrate decomposition gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110992806A (en) * | 2019-12-26 | 2020-04-10 | 西安石油大学 | Visual simulation device and method for hydrate generation decomposition and blockage mechanism |
Citations (7)
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| US6035933A (en) * | 1997-10-17 | 2000-03-14 | Petroleo Brasileiro S.A.-Petrobras | Process for the thermo-hydraulic control of gas hydrates |
| CN104453794A (en) * | 2014-11-20 | 2015-03-25 | 中国科学院广州能源研究所 | Simulation experiment system for whole process of natural gas hydrate exploitation and simulation method |
| CN105178953A (en) * | 2015-10-12 | 2015-12-23 | 中国石油大学(华东) | Device and method for measuring hydrate reservoir decomposition rate in drilling process |
| CN105277660A (en) * | 2015-10-12 | 2016-01-27 | 中国石油大学(华东) | Apparatus and method for monitoring hydrate decomposition area during different drilling and production processes |
| CN105422054A (en) * | 2015-11-24 | 2016-03-23 | 中国海洋石油总公司 | Sea area diagenesis natural gas hydrate trial production method |
| CN105699247A (en) * | 2016-03-04 | 2016-06-22 | 西南石油大学 | Experimental method for synthesizing and decomposing natural gas hydrate and experiment system |
| CN106544070A (en) * | 2016-12-06 | 2017-03-29 | 华南理工大学 | A kind of gas hydrates generate the method and device with displacement |
-
2017
- 2017-07-18 CN CN201710583724.7A patent/CN107271323B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6035933A (en) * | 1997-10-17 | 2000-03-14 | Petroleo Brasileiro S.A.-Petrobras | Process for the thermo-hydraulic control of gas hydrates |
| CN104453794A (en) * | 2014-11-20 | 2015-03-25 | 中国科学院广州能源研究所 | Simulation experiment system for whole process of natural gas hydrate exploitation and simulation method |
| CN105178953A (en) * | 2015-10-12 | 2015-12-23 | 中国石油大学(华东) | Device and method for measuring hydrate reservoir decomposition rate in drilling process |
| CN105277660A (en) * | 2015-10-12 | 2016-01-27 | 中国石油大学(华东) | Apparatus and method for monitoring hydrate decomposition area during different drilling and production processes |
| CN105422054A (en) * | 2015-11-24 | 2016-03-23 | 中国海洋石油总公司 | Sea area diagenesis natural gas hydrate trial production method |
| CN105699247A (en) * | 2016-03-04 | 2016-06-22 | 西南石油大学 | Experimental method for synthesizing and decomposing natural gas hydrate and experiment system |
| CN106544070A (en) * | 2016-12-06 | 2017-03-29 | 华南理工大学 | A kind of gas hydrates generate the method and device with displacement |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110992806A (en) * | 2019-12-26 | 2020-04-10 | 西安石油大学 | Visual simulation device and method for hydrate generation decomposition and blockage mechanism |
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| CN107271323B (en) | 2020-07-31 |
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Granted publication date: 20200731 Termination date: 20210718 |