CN106224000A - Chamber backfilling apparatus and earth-filling method is generated for sea bed gas hydrate exploitation - Google Patents
Chamber backfilling apparatus and earth-filling method is generated for sea bed gas hydrate exploitation Download PDFInfo
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- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000011049 filling Methods 0.000 title claims abstract description 12
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- 238000001514 detection method Methods 0.000 claims abstract description 16
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- 230000015572 biosynthetic process Effects 0.000 claims abstract description 11
- 238000011065 in-situ storage Methods 0.000 claims abstract description 10
- 238000005086 pumping Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000012800 visualization Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims description 39
- 238000002347 injection Methods 0.000 claims description 39
- 239000000654 additive Substances 0.000 claims description 22
- 230000000996 additive effect Effects 0.000 claims description 20
- 238000013461 design Methods 0.000 claims description 13
- 150000004677 hydrates Chemical class 0.000 claims description 12
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0099—Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- 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
- G01N33/24—Earth materials
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Abstract
The invention discloses a kind of for sea bed gas hydrate exploitation generation chamber backfilling apparatus and earth-filling method, it is made up of chamber situation in-situ monitoring system, material collection system, feed proportioning system, pumping injected system, backfill effect detection system, chamber situation in-situ monitoring system is made up of chamber information summary measuring and calculating equipment, chamber situation collecting unit, the digital signal of chamber situation collecting unit calculates equipment by private cable transmission to chamber information summary, and chamber complex situations are carried out three-dimensional visualization monitoring；The present invention can coordinate exploitation drilling tool that chamber carries out monitoring the most in real time, solution formulation, material mixture ratio, backfill construction, effect detection work, reaches the monitoring purpose to recovery process formation stability.
Description
Technical field
The present invention relates to formation stability field in sea bottom hydrate recovery process, in particular a kind of for seabed
Exploitation of gas hydrates generates the device and method of chamber backfill, and wherein earth-filling method is equally applicable to keep oil shale in-situ
The stability of exploitation engineering.
Background technology
Gas hydrates (Natural Gas Hydrate) are the emerging energies of a kind of clean and effective.Its reserves are huge,
On the earth, in gas hydrates, the reserves of total organic carbon are about oil, natural gas and the twice of coal three's summation, Qi Zhonghai
The Gas Hydrate Resources in territory, oceanic province accounts for the 99% of its total resources.Showing according to investigations, 90% marine site is all contained in the world
Gas hydrates, China South Sea, East China sea slope also show huge gas hydrates potentiality to be exploited.
In Gas Hydrate Occurrence Within Submarine stratum, hydrate makes deposit the most cementing, its exist ensure that near
Stablizing of geologic structure.Deposit when temperature and pressure varies more than hydrate phase balance condition can cause when the tax of gas hydrates
Decomposition of hydrate, decomposes and not only can destroy the cement structure between sedimentary particle, produces space and makes upset sliding between granule,
And in catabolic process, the gentle meeting of water of generation makes stratum partial liquefaction, pore pressure increase, effective stress reduces, and promotees further
Enter to decompose.The extensive decomposition of hydrate can be composed to deposit at it and be stayed larger space to form chamber at stratum.On the one hand chamber reduces
The structural strength on stratum, place, on the other hand chamber can cause sea water to recharge, make effective stress wide fluctuations, may result in
Covering stratum unstability to cave in, occurrence condition drastically changes can make hydrate decompose on a large scale, induces slope instability, sea water poison time serious
The geological disasters such as change, earthquake, tsunami.Therefore the formation of chamber can badly influence sea bottom hydrate compose deposit the stability on stratum with
Safety coefficient.
Existing heat shock, blood pressure lowering, chemical reagent hydrate extraction system thinking are all that the occurrence condition changing hydrate makes water
Compound decomposes.Can draw from existing sea bottom hydrate exploitation engineering experience, along with the carrying out of engineering, production zone can stay
Lower space forms chamber.Emerging solids production method is also to use physical method that hydrate ore bed is carried out bulk cutting, ore bed
Fragment is taken out by entirety, and the disappearance of hydrate ore bed can form bigger chamber in seabed, increases if letting alone chamber scale, then can
Order exploitation workspace architecture intensity reduces, chamber caves in, and causes serious accident.
In terms of sea bottom hydrate exploration and development research, current sea bed gas hydrate developmental research both domestic and external is main
It is in hydrate recovery method and device development, and existing hydrate exploration recovery method all suffers from chamber formation and leads
Cause hydrate to compose and deposit the problem that stratum and superstratum stability reduce, engineering safety cannot ensure.Research side is backfilled at chamber
Face, at present backfill design is concentrated mainly on mine, inland, and due to seabed have high pressure, flood, the special environment such as low temperature, and water
Compound is composed and is deposited stratum at the aspects such as intensity, porosity, moisture content and common stratum very different, is pointed to hydrate layer in seabed
Chamber row backfill method and technique more complicated.Therefore, research is needed badly a kind of raw for sea bed gas hydrate exploitation
Become the device and method of chamber backfill
Summary of the invention
For the problems referred to above, the present invention propose a kind of for sea bed gas hydrate exploitation generate chamber backfilling apparatus and
Earth-filling method.The present invention can independently carry out chamber complex situations monitoring under sea bottom complex operating mode, and according to practical situation
Immediately respond and carry out backfilling design and construction, compose due to hydrate when filling up hydrate exploitation and deposit stratum bulk stripping and water
The chamber that compound is decomposed to form.Chamber backfilling working can be greatly improved hydrate tax in hydrate recovery process and deposit and overlying
The structural strength on stratum, it is ensured that sea bed gas hydrate exploitation engineering is safe and efficient carries out, and safeguards seabottom geology, life
Stablizing of state environment.
It is by chamber situation in situ that the one of the present invention generates chamber backfilling apparatus for sea bed gas hydrate exploitation
Monitoring system, material collection system, feed proportioning system, pumping injected system, backfill effect detection system composition.
Chamber situation in-situ monitoring system is made up of, wherein chamber information summary measuring and calculating equipment, chamber situation collecting unit
Chamber information summary measuring and calculating equipment is positioned on the operating platform of sea, and chamber situation collecting unit is arranged on exploitation facility.Chamber
The digital signal of situation collecting unit calculates equipment by private cable transmission to chamber information summary, enters chamber complex situations
Row three-dimensional visualization is monitored, and provides current chamber running parameter for other system.；
Material collection system is made up of holding vessel, Rose Box, and the two is connected by pipeline, and material collection system is positioned at sea behaviour
Make on platform.For storing the remaining serosity amount returning serosity on record after basic handling, and serosity is carried out screening and filtering work
For backfill raw material；
Feed proportioning system is automatically added to equipment by filler agitator tank, additive, additive capacity proportioning calculates equipment and forms, mutually
Between coupled by pipeline, feed proportioning system is positioned on the operating platform of sea, can according to chamber situation require configure meet backfill
The complicated backfilling material required；
Pumping injected system is made up of high pressure multiphase pump group, injection device, and high pressure multiphase pump provides for injection unit
50MPa pressure can ensure the injection backfilling material that injection unit is quick, safe, and it is flat that its mesohigh multiphase pump group is positioned at sea operation
On platform.Injection device is provided with multiple directions slurry outlet, and has single action mechanism, and is provided with in flow in pipes and is unidirectionally controlled
Valve, with multi-phase mixed delivering backfilling material in chamber；
Backfill effect detection system by backfill effect recording equipment, backfill effect sensor unit form, wherein backfill effect
Fruit measuring and calculating recording equipment is positioned at sea operating platform, and backfill effect sensor unit is arranged on injection device.Backfill effect inspection
Examining system is calculated backfill effect important parameter and is calculated equipment by cable transmission to chamber information summary, to detect backfilling working
Whether reach to design requirement.
The present invention generates chamber earth-filling method for sea bed gas hydrate exploitation, comprises the following steps:
Offshore operations platform arrives job position, and chamber situation collecting unit is arranged on exploitation drilling tool, and exploitation drilling tool is worn
Cross sea water layer to transfer to overlying deposit layer surface, start to creep into, open material collection system control valve, in hydrate production wells
The drilling fluid returned continues to participate in drilling circulation after sediment, separating treatment, and the remaining slurry that sub-argument goes out enters holding vessel storage through pipeline
Deposit and record to make standby, creeping into gas hydrates to compose and deposit at layer, complete hydrate production wells.Chamber feelings are opened during exploitation
Condition shaft bottom monitoring device, along with exploitation scale constantly expands, composes at gas hydrates and deposits formation chamber at layer, now gather sky
Between sudden change trigger chamber situation collecting unit chamber is monitored in real time, parameter feedback is to sea processing unit calculated for subsequent work
Make relevant parameter, to command backfilling working；Open material collection system control valve, above return serosity and enter holding vessel storage through pipeline
And record to make standby, the digital signal of chamber situation collecting unit sets to the measuring and calculating of chamber information summary through private cable transmission
Standby, it analyzes and processes the body drawing down-hole chamber respectively according to shaft bottom sonar, ultrasonic down-hole imaging device, pressure-temperature sensor
Long-pending, shape, hole fractured zones, pressure and temp distributed constant；The chamber volume of chamber information summary measuring and calculating equipment feedback, hole
The transmission of fractured zones information to material collection system, regulation control Rose Box filter aperture, enable the running parameters such as the filter screen number of plies,
In holding vessel, serosity enters Rose Box through pipeline, is met the backfill raw material of shaft bottom chamber situation；According to chamber information summary
Measuring and calculating facility information, additive capacity proportioning calculates equipment and calculates the additive types of backfilling material needs, proportioning, dosage, transmission
Data are automatically added to equipment to additive, control each additive tank switch and flow, and additive enters filler agitator tank and slurry
Liquid mixes, and filler agitator tank rotating speed is calculated equipment real-time monitoring by chamber information summary, and stirring forms satisfactory backfill
Material；The down-hole volume of chamber information summary measuring and calculating equipment measuring and calculating, pressure parameter transmit to high pressure multiphase pump group, control its output
Pressure and flow meet backfilling material with the injection rate ensureing backfilling material and water the solidifying time, and injection device is transferred at the bottom of chamber
Portion, controls the injection way of injection device according to the shape of chamber, and when need to revolve note, single action mechanism makes injection device and exploitation drilling tool
The most independent rotation, to reduce energy consumption, backfilling material flow to one-way control valve through upper pipe, reaches to control unidirectional control during pressure
Valve processed is opened, and backfilling material enters chamber by slurry outlet, uses from the beginning of bottom, along axis injection mode from the bottom to top,
Along with the carrying out of injection work, backfilling material waters solidifying formation and backfills body；Treat that injecting work for the first time completes, backfill effect detection system
Open, shaft bottom backfill effect sensor unit in each sensor to backfill body test, gained degree of compaction, load,
The transmission of water content, compacting factor parameter, to backfill effect recording equipment, compares with design parameter, if backfill body not yet reaches
Design requirement, then need to carry out filling work, and backfill body and design require that Diversity Transmit calculates to chamber information summary measuring and calculating equipment
Fill running parameter needed for each system, fill by above-mentioned steps, until the backfill body ginseng that backfill effect recording equipment records
Number meets the backfill effect requirements of intensity, compacting factor, effective duration, and backfilling working terminates, and proposes injection unit.
Beneficial effects of the present invention:
Deposit and superstratum stability for sea bottom hydrate exploitation engineering is inevitably formed chamber reduction tax
Problem, the present invention can coordinate exploitation drilling tool that chamber carries out monitoring the most in real time, solution formulation, material mixture ratio, backfill construction, effect
Fruit detection work, reaches the monitoring purpose to recovery process formation stability, and has:
1, the present invention understands chamber situation in real time by in-situ monitoring system, formulates the scheme that rationally backfills, fast response time,
Good with the matching of chamber, bore exploration well in exploitation well location construction without another, eliminate geology detection mode before traditional construction,
It is more suitable for sea bottom hydrate exploitation engineering.
2, circulation fluid required treatment process sand setting separation clout, the recovery of drilling cuttings during backfilling material main body is hydrate exploitation
Recycling, draws materials conveniently, cost-effective.
3, injection device is provided with single action mechanism, it is to avoid the revolution of top drilling tool and sea water friction, reduces energy consumption, drops simultaneously
Vibration in low insufflating procedure, makes spray work more stable.
4, equipped with backfill effect detection system, backfill body parameter can be tested, it is ensured that backfill weight reaches to want
Ask.
5, being controlled follow-up work systematic parameter by chamber condition monitoring system, manually few, automaticity is high.
6, compared with the chamber taken no action to, the chamber after backfilling can keep design strength for a long time, maintains
Near the stablizing of stratum, it is to avoid the chamber connection that formed during porous exploitation and caving on a large scale of causing, keep simultaneously near
Hydrate formation is stable decomposes a large amount of methane of spilling on a large scale prevented also from hydrate, thus reduces sea bed gas hydrate and open
Adopt engineering risk, improve engineering safety, reduce hydrate cost of winning, protect seabottom geology, ecological environment.
Accompanying drawing explanation
Fig. 1 is backfilling apparatus and the schematic diagram of method of sea bed gas hydrate chamber of the present invention.
Fig. 2 is the connecting relation schematic diagram of five systems of the present invention.
Fig. 3 is the chamber situation enlarged drawing in the work at the I in Fig. 1.
Wherein: 1--offshore operations platform, 2-hydrate production wells, 3-sea water layer, 4-overlying sediments nitride layer, 5-natural gas
Hydrate is composed to deposit and is covered stratum under layer, 6-, 7-chamber information summary measuring and calculating equipment, 8-holding vessel, and 9-Rose Box, 10-filler stirs
Case, 11-additive is automatically added to equipment, and 12-additive capacity proportioning calculates equipment, 13-high pressure multiphase pump group, 14-injection unit,
15-backfills effect recording equipment, and 16-backfills body, 17-chamber situation collecting unit, and 18-exploits drilling tool, 19-injection device, 20-
One-way control valve, 21-single action mechanism, 22-backfills effect sensor unit, 23-slurry outlet.
A-material collection system, B-feed proportioning system, C-pumps injected system, and D-chamber situation in-situ monitoring system, E-returns
Fill out effect detection system.
Detailed description of the invention
As shown in Figure 1, Figure 2 and Figure 3, the one of the present invention generates chamber backfill dress for sea bed gas hydrate exploitation
Put is by chamber situation in-situ monitoring system D, material collection system A, dispensing system B, pumping injected system C, backfill effect detection
System E forms, and chamber situation in-situ monitoring system D is calculated equipment 7, chamber situation collecting unit 17 groups by chamber information summary
Becoming, the digital signal of chamber situation collecting unit 17 calculates equipment 7 to chamber information summary, to chamber by private cable transmission
Complex situations carry out three-dimensional visualization monitoring；
Material collection system A is made up of holding vessel 8, Rose Box 9, is used for storing on record serosity amount of returning, and enters serosity
Row processes as backfill raw material；
Feed proportioning system B is automatically added to equipment 11 by filler agitator tank 10, additive, additive capacity proportioning calculates equipment 12 groups
Becoming, coupled by pipeline each other, feed proportioning system B is positioned on sea operating platform 1, can require to configure according to chamber situation
Meet the backfilling material that backfill complexity requires；
Pumping injected system C is made up of high pressure multiphase pump group 13, injection unit 14, and high pressure multiphase pump 13 is injection unit 14
The 50MPa pressure provided can ensure the injection backfilling material that injection unit 14 is quick, safe, and injection unit 14 has single action mechanism
21；
Backfill effect detection system E by backfill effect recording equipment 15, backfill effect sensor unit 22 form, backfill effect
Really detecting system E is calculated backfill effect important parameter by cable transmission to chamber information summary measuring and calculating equipment 7.
Of the present invention for sea bed gas hydrate exploitation generate chamber earth-filling method comprise the following steps:
Offshore operations platform 1 arrives job position, and chamber situation collecting unit 17 is arranged on exploitation drilling well tool 18, exploitation
Drilling tool 18 transfers overlying sediments nitride layer 4 surface through sea water layer 3, starts to creep into, and creeps into gas hydrates to compose and deposits at layer 5,
Complete hydrate production wells 2.Along with exploitation scale constantly expands, compose at gas hydrates and deposit formation chamber, backfiller at layer 5
Work starts；Open material collection system A control valve, above return serosity and enter holding vessel 8 through pipeline and store and record to make standby, this
Time gather space sudden change and trigger chamber situation collecting unit 17 and start working, the digital signal of chamber situation collecting unit 17 is through specially
Calculating equipment 7 by cable transmission to chamber information summary, it passes according to shaft bottom sonar, ultrasonic down-hole imaging device, pressure, temperature
Sensor analyzes and processes respectively and draws the volume of down-hole chamber, shape, hole fractured zones, pressure and temp distributed constant；Chamber feelings
The chamber volume of condition comprehensively measuring and calculating equipment 7 feedback, hole fractured zones information transmission to material collection system, regulation controls to filter
Case 9 filter aperture, enable the running parameters such as the filter screen number of plies, in holding vessel 8 serosity through pipeline enter Rose Box 9, be met well
The backfill raw material of end chamber situation；Calculating equipment 7 information according to chamber information summary, additive capacity proportioning calculates equipment 12 and calculates
The additive types of backfilling material needs, proportioning, dosage, transfer data to additive and be automatically added to equipment 11, control each and add
Adding agent case switch and flow, additive enters filler agitator tank 10 and mixes with serosity, and filler agitator tank 10 rotating speed is by chamber feelings
Condition comprehensively measuring and calculating equipment 7 real-time monitoring, stirring forms satisfactory backfilling material；Chamber information summary measuring and calculating equipment 7 is calculated
Down-hole volume, pressure parameter transmission to high pressure multiphase pump group 13, control its output pressure and flow to ensure backfilling material
Injection rate is watered the solidifying time to meet backfilling material, and injection unit 14 is transferred to chamber, controls note according to the shape of chamber
Entering the injection way of unit 14, when need to rotate, single action mechanism 21 makes injection device 19 separate independent rotation with exploitation drilling tool 18, with
Reducing energy consumption, backfilling material is left to one-way control valve 20 through upper pipe, and when reaching to control pressure, one-way control valve 20 is opened, and returns
Underfill material enters chamber by slurry outlet 23, uses from the beginning of bottom, along axis injection mode from the bottom to top, along with injecting work
The carrying out made, backfilling material waters solidifying formation and backfills body 16；Treating that injecting work for the first time completes, backfill effect detection system is opened, well
Backfill body is tested by each sensor in the backfill effect sensor unit 22 at the end, and parameters obtained transmits to backfilling effect
Recording equipment 15, compares with design parameter, if backfill body 16 not yet reaches to design requirement, then needs to carry out filling work, returns
Fill out body 16 and design requires that Diversity Transmit to chamber information summary measuring and calculating equipment 7 calculates and fills running parameter needed for each system, press
Above-mentioned steps fills, until backfill body 16 parameter that backfill effect recording equipment 15 records meets intensity, compacting factor, has
The backfill effect requirements of effect duration, backfilling working terminates, and proposes injection unit 14.
Claims (2)
1. one kind generates chamber backfilling apparatus for sea bed gas hydrate exploitation, it is characterised in that: it is former by chamber situation
Level monitoring system (D), material collection system (A), dispensing system (B), pumping injected system (C), backfill effect detection system (E) group
Becoming, chamber situation in-situ monitoring system (D) is made up of chamber information summary measuring and calculating equipment (7), chamber situation collecting unit (17),
The digital signal of chamber situation collecting unit (17) calculates equipment (7) to chamber information summary, to cave by private cable transmission
Room complex situations carry out three-dimensional visualization monitoring；
Material collection system (A) is made up of holding vessel (8), Rose Box (9), is used for storing on record serosity amount of returning, and to serosity
Carry out processing as backfill raw material；
Feed proportioning system (B) is automatically added to equipment (11) by filler agitator tank (10), additive, additive capacity proportioning calculates equipment
(12) composition, is coupled by pipeline each other, and feed proportioning system (B) is positioned on sea operating platform (1), can be according to chamber situation
Require to configure and meet the backfilling material that backfill complexity requires；
Pumping injected system (C) is made up of high pressure multiphase pump group (13), injection unit (14), and high pressure multiphase pump (13) is single for injecting
The 50MPa pressure that unit (14) provides can ensure the injection backfilling material that injection unit (14) is quick, safe, and injection unit (14) has
There is single action mechanism (21)；
Backfill effect detection system (E) is made up of backfill effect recording equipment (15), backfill effect sensor unit (22), backfill
Effect detection system (E) is calculated backfill effect important parameter by cable transmission to chamber information summary measuring and calculating equipment (7).
2. generate a chamber earth-filling method for sea bed gas hydrate exploitation, comprise the following steps:
Offshore operations platform (1) arrives job position, and chamber situation collecting unit (17) is arranged in exploitation drilling well tool (18), opens
Adopt drilling tool (18) and transfer overlying sediments nitride layer (4) surface through sea water layer (3), start to creep into, creep into gas hydrates tax
Deposit layer (5) place, complete hydrate production wells (2)；Along with exploitation scale constantly expands, compose at gas hydrates and deposit layer (5) place
Forming chamber, backfilling working starts；Open material collection system (A) control valve, above return serosity and enter holding vessel (8) storage through pipeline
Depositing and record to make standby, now gathering space sudden change and trigger chamber situation collecting unit (17) and start working, chamber situation is adopted
The digital signal of collection unit (17) is through private cable transmission to chamber information summary measuring and calculating equipment (7), and it is according to shaft bottom sonar, super
Sound down-hole imaging device, pressure, temperature sensor analyze and process respectively and show that the volume of down-hole chamber, shape, hole crack are divided
Cloth, pressure and temp distributed constant；Chamber volume, hole fractured zones information that chamber information summary measuring and calculating equipment (7) feeds back pass
Transport to material collection system, regulation control Rose Box (9) filter aperture, enable the running parameters such as the filter screen number of plies, in holding vessel (8)
Serosity enters Rose Box (9) through pipeline, is met the backfill raw material of shaft bottom chamber situation；Set according to the measuring and calculating of chamber information summary
Standby (7) information, additive capacity proportioning calculates equipment (12) and calculates the additive types of backfilling material needs, proportioning, dosage, transmission
Data to additive is automatically added to equipment (11), controls each additive tank switch and flow, and additive enters filler agitator tank
(10) mixing with serosity, filler agitator tank (10) rotating speed is calculated equipment (7) real-time monitoring by chamber information summary, and stirring is formed
Satisfactory backfilling material；Down-hole volume, pressure parameter transmission that chamber information summary measuring and calculating equipment (7) is calculated are many to high pressure
Phase pump group (13), when controlling its output pressure and flow to ensure that the injection rate of backfilling material is to meet backfilling material and water solidifying
Between, injection unit (14) is transferred to chamber, controls the injection way of injection unit (14) according to the shape of chamber, needs to rotate
Time, single action mechanism (21) makes injection device (19) and exploitation drilling tool (18) separate independent rotation, to reduce energy consumption, backfilling material warp
Upper pipe is left to one-way control valve (20), and when reaching to control pressure, one-way control valve (20) is opened, and backfilling material passes through pulp
Hole (23) enters chamber, uses from the beginning of bottom, along axis injection mode from the bottom to top, along with injecting the carrying out of work, returns
Underfill material is watered solidifying formation and is backfilled body (16)；Treating that injecting work for the first time completes, backfill effect detection system is opened, the backfill effect in shaft bottom
Really backfill body is tested by each sensor in sensor unit (22), and parameters obtained transmission is to backfill effect recording equipment
(15), compare with design parameter, if backfill body (16) not yet reaches to design requirement, then need to carry out filling work, backfill body
(16) require that with design Diversity Transmit to chamber information summary measuring and calculating equipment (7) calculates and fill running parameter needed for each system, press
Above-mentioned steps fills, until backfill body (16) parameter that backfill effect recording equipment (15) records meets intensity, compacting system
The backfill effect requirements of duration several, effective, backfilling working terminates, and proposes injection unit (14).
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| CN107489412A (en) * | 2017-10-17 | 2017-12-19 | 西南石油大学 | A kind of sea-bottom shallow gas hydrates underground separates backfill system in real time on the spot |
| CN108071373A (en) * | 2017-11-21 | 2018-05-25 | 中国矿业大学 | A kind of method using high-water material filling sea bed gas hydrate exploitation cavity |
| CN109736769A (en) * | 2019-01-15 | 2019-05-10 | 中国矿业大学 | A kind of frozen soil layer gas hydrates horizontal branch well pattern mining system and method |
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