CN108729896A - A kind of hot dry rock robot explosion waterpower composite fracturing brill completion system - Google Patents
A kind of hot dry rock robot explosion waterpower composite fracturing brill completion system Download PDFInfo
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- CN108729896A CN108729896A CN201810488532.2A CN201810488532A CN108729896A CN 108729896 A CN108729896 A CN 108729896A CN 201810488532 A CN201810488532 A CN 201810488532A CN 108729896 A CN108729896 A CN 108729896A
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- 239000011435 rock Substances 0.000 title claims abstract description 67
- 238000004880 explosion Methods 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 241001074085 Scophthalmus aquosus Species 0.000 title abstract description 7
- 239000002360 explosive Substances 0.000 claims abstract description 77
- 238000005553 drilling Methods 0.000 claims abstract description 53
- 238000012545 processing Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000013480 data collection Methods 0.000 claims abstract description 10
- 230000009977 dual effect Effects 0.000 claims description 19
- 210000002445 nipple Anatomy 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 10
- 230000037452 priming Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007405 data analysis Methods 0.000 claims description 3
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- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000010304 firing Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000011897 real-time detection Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- BDOYPFKKGPWJBQ-UHFFFAOYSA-N [N].S=O Chemical compound [N].S=O BDOYPFKKGPWJBQ-UHFFFAOYSA-N 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
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- 230000000977 initiatory effect Effects 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/263—Methods for stimulating production by forming crevices or fractures using explosives
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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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2405—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection in association with fracturing or crevice forming processes
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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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Earth Drilling (AREA)
Abstract
A kind of hot dry rock robot explosion waterpower composite fracturing brill completion system, including ground control system, robot, drilling execution system, explosive fracturing execute system, hydraulic fracturing executes system, orientation execution system, reentry execution system;The ground mouthful control system includes data processing centre, ground data acquisition sensor, is drilled well control system device, ground signal R-T unit, preventer, coiled tubing wellhead assembly, coiled tubing work vehicle, input equipment, storage unit;The robot includes downhole data collection sensor, CPU element, drilling control module, shaft bottom signal receiving/transmission device, reentries tool control modules, directional orientation tool control module, directional orientation tool control module, explosive fracturing control module, hydraulic fracturing control module;It using robot technology, realizes Intelligent closed-loop drilling well, effectively reduces operating cost, add waterpower Technology of Compound Fracturing using firing, can significantly optimize hot dry rock fracture network, reduce " heat transmits short circuit " risk.
Description
Technical field
The invention belongs to be drilled well technical field more particularly to a kind of hot dry rock robot explosion waterpower composite fracturing to be drilled
Well system.
Background technology
According to the research and appraisal in 2015 of Chinese Ministry of Land and Resources and China Geological Survey Bureau as a result, national land-based area buried depth exists
3000-10000 meters of hot dry rock stock number converts into 856,000,000,000,000 tons of standard coals, and mining resources amount accounts for about up to 17,000,000,000,000 tons of standard coals
The 1/6 of world's hot dry rock total resources.
Hot dry rock is no water or steam, fine and close impervious high heat rock mass, can be widely used for power generation, heating, strengthens
Oil exploitation etc., is nearly free from the pollutants such as nitrogen oxysulfide in development process, and not by season, weather and system round the clock
About, generally acknowledged in the world high-efficiency low-carbon clean energy resource has been it.Since the last century 70's, the whole world it is multiple country always into
The utilization experimental study of row hot dry rock.Currently, many places, which have had been established, in the states such as the U.S., Britain, Australia develops and uses examination
Test study base.China's Development of Geothermal Resources research work since 1987, China in 2013 is for the first time in Qinghai republicanism basin
2230 meters of depth, which are successfully bored, obtains the hot dry rock that temperature is up to 153 DEG C, the height that 236 DEG C are obtained in 3705 meters of basin depths brill in 2017
Warm dry-heat rock body, on the whole China to the utilization of underground heat still in the primary stage.Although hot dry rock exploitation in China's lags behind
Foreign countries, but see that domestic and international hot dry rock exploitation does not enter the large scale mining stage on the whole, it finds, limits after further research
Hot dry rock resource large scale mining is mainly following reason:
Hot dry rock drilling cost is high.Hot dry rock exploit early investment in, compared with the identical well depth of conventional gas and oil, hot dry rock drilling well at
Originally it is 2-5 times of conventional gas and oil drilling cost, drilling well input accounts for hot dry rock input early period more than 80%, this is that current hot dry rock is opened
Adopt an one of the major reasons for being difficult to large-scale promotion.
Hot dry rock fracturing effect is poor.It is conventional to use hydraulic fracturing technology to dry to improve hot dry rock heat exchanger effectiveness
Hot rock reservoir is transformed, and the crack that hydraulic fracturing generates is less, and heat exchange effect is bad, and is susceptible to " heat transmits short circuit "
The phenomenon that, i.e. heat exchange medium entrance and the import temperature difference is very small, cannot be utilized to thermal energy." heat transmits short circuit " phenomenon
There is i.e. beautiful wellbore without available value, such phenomenon substantially reduces the exploitation period of hot dry rock, causes xeothermic
Such phenomenon of rock annoyings the suitable development of hot dry rock.
Hot dry rock comprehensive benefit is poor.Conventional gas and oil exploitation well head displacement size determines the benefit of oil-gas mining, hot dry rock
Benefit it is then related with the calorific value exchanged in the unit interval, it is generally the case that hot dry rock exchange calorific value generate benefit it is much few
The benefit caused by conventional gas and oil resource exploitation, and hot dry rock early investment is far longer than the input of conventional gas and oil resource,
Therefore the comprehensive benefit of hot dry rock exploitation is not generally high.
The prior art mainly has following disadvantage:
(1), fuel, oxidant and water mixed proportion and quantity control it is difficult, or even the condition of burning is not achieved;
(2), fuel, oxidant mixed in proportion in advance with water, mixture may occur during ground and tripping in
Burning has serious security risk;
(3), burn in existing crack, and former fracture length is extended, crack limited amount, is easy to happen that " heat passes
Pass short circuit " phenomenon;
(4), existing robot using rapid curing liquid explosives, explosive conveying is difficult to realize, and safety is hidden in transmission process
Suffer from very big;
(5), cannot achieve well operations are drilled to multiple-limb wellbore.
To improve China's energy resource structure, Air Pollution prevention and control, promoting economic society ecological environment scientific development, invention a kind of
Drilling cost is low, the storage hot dry rock production technique that correctional effect is good, comprehensive benefit is high has great and real meaning.
Invention content
It is an object of the present invention to which in view of the above-mentioned problems, proposition is a kind of significantly to optimize hot dry rock fracture network, reduction
The hot dry rock robot explosion waterpower composite fracturing of " heat transmits short circuit " risk bores completion system.
A kind of hot dry rock robot explosion waterpower composite fracturing brill completion system, including ground control system, robot, brill
Into the system of execution, explosive fracturing execute system, hydraulic fracturing executes system, orientation execution system, reentry execution system;The machine
Device people executes system with drilling execution system, explosive fracturing respectively, hydraulic fracturing executes system, orientation execution system, reentries and holds
Row system be connected, the robot be used for creep into, explosive fracturing, hydraulic fracturing data collection and control.
The ground mouthful control system includes data processing centre, ground data acquisition sensor, be drilled well control system device,
Face signal receiving/transmission device, preventer, coiled tubing wellhead assembly, coiled tubing work vehicle, input equipment, storage unit;It is described
Ground data acquisition sensor, be drilled well control system device, ground signal R-T unit, input equipment, storage unit respectively with data
Processing center is connected;The input equipment is for time break input, the input of explosive fracturing position data, hydraulic fracturing positional number
According to input.
The drilling execution system is used for dual horizontal well drilling well, and transmitting fracture network for hot dry rock heat provides basis;It is described
Explosive fracturing executes system and is used to carry out explosive fracturing to the dual horizontal well, forms cracky heat and transmits fracture network;Institute
Hydraulic fracturing execution system is stated to be used to that the heat transmission fracture network that explosive fracturing is formed to be carried out extending to form hydraulically created fracture,
To link up dual horizontal well.
The drilling execution system is connect safely by coiled tubing connected in sequence, coiled tubing crossover sub, coiled tubing
Head, directional orientation tool, power drilling tool, reentries tool, drill bit composition at check valve, and the robot setting is in check valve and orientation work
Between tool.
Robot controls reentry tool by well casing string in the entry position tripping in of cluster well eye, and well casing string is double to hot dry rock
Horizontal well carries out drilling operation, and coiled tubing work vehicle acts well casing string after the completion;Robot controls reentry tool by ground
Explosive fracturing completion tubular string is assembled in the entry position tripping in of cluster well eye, robot pulls explosive fracturing completion tubular string and successively
Explosive fracturing is carried out to multiple pressure break points, completes explosive fracturing operation;The heat that hydraulic fracturing completion tubular string forms explosive fracturing
It transmits fracture network to carry out extending to form hydraulically created fracture, to link up dual horizontal well.
The explosive fracturing executes system is pacified by coiled tubing connected in sequence, coiled tubing crossover sub, coiled tubing
Full connector, hydraulic anchor, temporarily blocks up device A, priming device, explosive pipe nipple, temporarily blocks up device B, reentries tool, guide shoe composition check valve;It is described
Robot is arranged between the check valve, hydraulic anchor.
The hydraulic fracturing executes system and is pacified by coiled tubing connected in sequence, coiled tubing crossover sub, coiled tubing
Full connector, packer A, injection pipe nipple, packer B, reentries tool, guide shoe composition at hydraulic anchor;The robot is arranged described
Between coiled tubing safety joint, hydraulic anchor.
Further, the ground data acquisition sensor includes displacement sensor, pump pressure sensor, running speed sensing
Device, rotary depth sensor, robot go out best feed speed according to the data analysis that ground data acquisition sensor measures and lead
Gravitation.
Further, the robot includes downhole data collection sensor, CPU element, drilling control module, shaft bottom letter
Number R-T unit reentries tool control modules, directional orientation tool control module, directional orientation tool control module, explosive fracturing and controls mould
Block, hydraulic fracturing control module;The reentry tool control modules, drilling control module, directional orientation tool control module, explosion pressure
Split control module, hydraulic fracturing control module is connected with CPU element output end respectively;The downhole data collection sensor and well
Bottom signal receiving/transmission device is connected with CPU element respectively;The shaft bottom signal receiving/transmission device and ground signal R-T unit network phase
Even.
Further, the well control system device that is drilled includes displacement controller, pump pressure controller, coiled tubing drum speed control
Device processed.
Further, the downhole data collection sensor include drilling speed sensor, bit weight sensor, torque sensor,
Vibrating sensor, range sensor, displacement sensor, hydrostatic sensor, pit shaft identification sensor, aspect sensor, shaft bottom letter
Number R-T unit;The aspect sensor is acquired for hole deviation data;The pit shaft identification sensor is used for real time scan pit shaft
Form parameter identifies cluster well barrel shape and its direction parameter by CPU element, and the central processing unit of robot is according to clump formula
The direction parameter control reentry tool of pit shaft enters corresponding cluster well cylinder.
Further, the explosive pipe nipple is modularization explosive pipe nipple, is adjusted for ground explosive consumption.
Further, the detonator signal that the priming device is inputted by the input equipment of ground control system passes through robot
It ignites.
The beneficial effects of the present invention are:Solve that current hot dry rock drilling cost is high, fracturing effect is poor, comprehensive mining benefit
Bad problem uses robot technology in drilling process, and stability, safety are enhanced using the conveying of explosive pipe nipple;It realizes
Well operations are drilled to multiple-limb wellbore;It realizes Intelligent closed-loop drilling well, can effectively reduce hot dry rock drillng operation cost, completion mistake
Using explosion and waterpower Technology of Compound Fracturing in journey, it can significantly optimize hot dry rock fracture network, extension has been split seam length, increased
Crack quantity reduces " heat transmits short circuit " risk.
Description of the drawings
Fig. 1 be the present invention be drilled well system structure diagram;
Fig. 2 is well casing string close-up schematic view in Fig. 1;
Fig. 3 is the explosive fracturing structural schematic diagram of the present invention;
Fig. 4 is explosive fracturing completion tubular string close-up schematic view in Fig. 3;
Fig. 5 is the hydraulic fracturing structural schematic diagram of the present invention;
Fig. 6 is hydraulic fracturing completion tubular string close-up schematic view in Fig. 5;
Fig. 7 is the system diagram of the ground control system and robot of the present invention;
Fig. 8 is the work flow diagram of the present invention;
Fig. 9 is that the cluster well of the present invention reentries control flow chart;
Figure 10 is the Drilling Control flow chart of the present invention;
Figure 11 is the dual horizontal well directed flowgraph of the present invention;
Figure 12 is the explosive fracturing control flow chart of the present invention;
Figure 13 is the hydraulic fracturing control flow chart of the present invention.
Figure label indicates:The stratum 1-;2- coiled tubing wellhead assemblies;3- preventers;4- ground signal receiving/transmitting devices;
5- signal wires;6- coiled tubing reels;7- drum speed controllers;8- data processing centres;9- coiled tubing work vehicles;10-
Slush pump;11- mud pumpage/pump pressure controller;12- main boreholes;13- coiled tubings;14- coiled tubing crossover subs;15-
Coiled tubing safety joint;16- check valves;17- robots;18- directional orientation tools;19- power drilling tools;20- reentries tool;21-
Drill bit;22- hydraulic anchors;23- temporarily blocks up device A;24- priming devices;25- explosive pipe nipples;26- temporarily blocks up device B;27- guide shoes;28- is insulated
Device A;29- nozzles;30- packers B;31- dual horizontal wells;32- well casing strings;33- explosive fracturing completion tubular strings;34- waterpower pressures
Split completion tubular string;35- explosive fracturings crack;36- hydraulically created fractures;37- ground control systems.
Specific implementation mode
The present embodiment provides a kind of hot dry rock robot explosion waterpower composite fracturings to bore completion system, including ground control system
System, robot 17, drilling execution system, explosive fracturing execute system, hydraulic fracturing executes system, orientation execution system, reentry
Execution system;The robot 17 executes system with drilling execution system, explosive fracturing respectively, hydraulic fracturing executes system, fixed
To execute system, reentry execution system be connected, the robot be used for creep into, explosive fracturing, hydraulic fracturing data acquisition and
Control.
The ground mouthful control system includes data processing centre, ground data acquisition sensor, be drilled well control system device,
Face signal receiving/transmission device 4, preventer 3, coiled tubing wellhead assembly 2, coiled tubing work vehicle 9, input equipment, storage unit;
The ground data acquisition sensor, be drilled well control system device, ground signal R-T unit, input equipment, storage unit respectively with
Data processing centre is connected.
As shown in fig. 7, the robot 17 includes downhole data collection sensor, CPU element, drilling control module, well
Bottom signal receiving/transmission device reentries tool control modules, directional orientation tool control module, directional orientation tool control module, explosive fracturing control
Molding block, hydraulic fracturing control module;It is the reentry tool control modules, drilling control module, directional orientation tool control module, quick-fried
Fried fracturing control module, hydraulic fracturing control module are connected with CPU element output end respectively;The downhole data collection sensor
It is connected respectively with CPU element with shaft bottom signal receiving/transmission device;The shaft bottom signal receiving/transmission device and 4 net of ground signal R-T unit
Network is connected.
It creeps into execution system and is used for 32 drilling well of dual horizontal well, transmitting fracture network for hot dry rock heat provides basis;It is described quick-fried
Fried pressure break executes system and is used to carry out explosive fracturing to the dual horizontal well, forms cracky heat and transmits fracture network;It is described
Hydraulic fracturing executes system and is used to carry out extending to form hydraulically created fracture 36 to the heat transmission fracture network that explosive fracturing is formed,
To link up dual horizontal well.
As shown in Figure 1 and Figure 2, drilling execution system by coiled tubing 13 connected in sequence, coiled tubing crossover sub 14,
Coiled tubing safety joint 15, directional orientation tool 18, power drilling tool 19, reentries tool 20, the composition of drill bit 21 at check valve 16, described
Robot 17 is arranged between check valve 16 and directional orientation tool 18.
As shown in Figure 3, Figure 4, explosive fracturing executes system by coiled tubing 13 connected in sequence, coiled tubing crossover sub
14, coiled tubing safety joint 15, check valve 16, hydraulic anchor 22, temporarily stifled device A23, priming device 24, explosive pipe nipple 25, temporarily stifled
Device B26, tool 20, the composition of guide shoe 27 are reentried;The robot 17 is arranged between the check valve 16, hydraulic anchor 22.
As shown in Figure 5, Figure 6, hydraulic fracturing executes system by coiled tubing 13 connected in sequence, coiled tubing crossover sub
14, coiled tubing safety joint 15, hydraulic anchor 22, packer A28, injection pipe nipple 29, packer B30, reentry tool 20, guide shoe
27 compositions;The robot 17 is arranged between the coiled tubing safety joint 15, hydraulic anchor 22.
A kind of hot dry rock robot explosion waterpower composite fracturing brill completion system, the course of work include the following steps:S1:
According to hot dry rock buried depth, reservoir thickness, stratigraphic dip, thermal energy parameter, heat transfer parameter, hot dry rock clump formula dual horizontal well is set
Well track, hot dry rock clump formula dual horizontal well wellbore spacing, hot dry rock clump formula dual horizontal well casing programme parameter, well casing string 13
Parameter, 33 parameter of explosive fracturing completion tubular string, 34 parameter of hydraulic fracturing completion tubular string;It can be bored according to rock stratum physical parameter, rock
Property setting hydraulic parameters, mechanical parameter;And explosive fracturing crack 35 and the expansion of hydraulically created fracture 36 are obtained according to hot dry rock lithology
Open up rule, setting explosion spacing, explosive quantity and hydraulic fracturing discharge capacity and pressure parameter;S2:Ground assembles well casing string 32,
Robot 17 controls reentry tool 20 by well casing string 32 in the entry position tripping in of cluster well eye, and well casing string 32 is double to hot dry rock
Horizontal well 31 carries out drilling operation, and coiled tubing work vehicle acts well casing string 32 after the completion;S3:Work is reentried in the control of robot 17
Ground is assembled explosive fracturing completion tubular string 33 in the entry position tripping in of cluster well eye, by explosive fracturing completion tubular string 33 by tool 20
It tows at setting well depth, sets hydraulic anchor 22, temporarily blocks up device A23, priming device 24 carries out detonation operation to explosive pipe nipple 25, fries
Medicine pipe nipple 25 is completed to the single-point explosive fracturing of hot dry rock, ground mouthful control system towing explosive fracturing completion tubular string 33 and successively
Explosive fracturing is carried out to multiple pressure break points, completes explosive fracturing operation;S4:Robot 17 controls reentry tool 20 will be in ground group
The hydraulic fracturing completion tubular string 34 installed drags hydraulic fracturing completion tubular string 34 in the entry position tripping in of cluster well eye, robot 17
It drags to setting well depth, sets hydraulic anchor 22, set packer 30, ground is pumped into fracturing fluid, and fracturing fluid extends quick-fried under high pressure
35 length of fried fracturing fracture, until dual horizontal well 31, by crack unicom, coiled tubing work vehicle 9 plays out hydraulic fracturing completion tubular
String completes hydraulic fracturing job.
As shown in figure 9, a kind of Multilateral Wells that hot dry rock robot explosion waterpower composite fracturing bores completion method reentry tool
20 operation principles are inputted when robot 17 is lowered into 5-10 meters from cluster well cylinder by the input equipment in the control system of ground
Cluster well cylinder is numbered, and data processing centre encodes cluster well cylinder, ground signal R-T unit by coded excitation extremely
Underground, the shaft bottom signal receiving/transmission device received encoded signal of robot 17, central processing unit are decoded, while pit shaft identification passes
Sensor carries out real-time detection to wellbore shape, and detection data is judged by central processing unit, if it is not branch well cylinder to judge
Then continue to detect, when detecting branch well cylinder compare well depth whether be design pit shaft, if not design branch well cylinder then after
Continuous detection then will control signal according to the branch well cylinder orientation detected and emit to reentry tool controller if branch well cylinder,
Reentry 20 guided drilling pipe string 32 of tool controller control reentry tool, explosive fracturing completion tubular string 33 or hydraulic fracturing completion tubular
String 34 enters corresponding pit shaft.
As shown in Fig. 1 and Figure 10, a kind of hot dry rock robot explosion waterpower composite fracturing bores the drilling process of completion system
Operation principle:Well casing string 32 is assembled on the ground, and tripping in creeps into pipe string 32,20 normal work of tool is reentried during tripping in
Make, when well casing string 32 is lowered into from shaft bottom 5-10 meters, starts drill mode, the input equipment input in ground control system
Bit pressure, drilling speed, data processing centre carry out coding and by data by the transmitting of ground signal R-T unit 4 to well to drilling speed, bit pressure
Bottom, shaft bottom signal receiving/transmission device receive ground signal, and control signal is simultaneously passed to drilling execution system by central processing unit decoding
Proportional control valve controller and throttle valve controller, proportional control valve controller and throttle valve controller control feeding speed respectively
Degree and feeding bit pressure, the drilling speed sensor of robot 17 while drilling, bit weight sensor, torque sensor, vibrating sensor,
Displacement sensor, hydrostatic sensor detect drilling speed, bit pressure, torque, vibration, discharge capacity and hydraulic parameter in real time, and central processing unit is logical
It crosses big data analysis and judges whether drilling process is optimal, if not then optimal control signal is re-entered by robot 17
Drilling executes controller and carries out corresponding feed speed, feeding bit pressure adjustment, if optimal drilling process, then shaft bottom controls
32 movement speed of well casing string is sent to ground, the ground signal of ground control system by system by shaft bottom signal receiving/transmission device
R-T unit 4 receives signal and is concurrently incident upon data processing centre, and well casing string movement speed is converted into connecting by data processing centre
Continuous oil pipe rotating speed, and tach signal is emitted to drum speed controller, drum speed controller adjusts 6 turns of coiled tubing reel
Speed.
As shown in figure 11, while the feed speed and feeding bit pressure for controlling drilling well, ground control system passes through input
Equipment inputs dual horizontal well distance, and data processing centre's data of adjusting the distance are encoded, and ground signal R-T unit 4 sends out signal
It is incident upon shaft bottom, shaft bottom signal receiving/transmission device receives signal, central processing unit decoding, and central processing unit compares range sensor detection
Distance and the distance of ground launch, while the hole deviation and orientation that central processing unit is measured according to hole deviation/aspect sensor are obtained, is tied
It closes the comparing result of central processing unit and according to comparing result, calculates the adjustment angle of directional orientation tool, robot 17 will adjust
Angle emits to directional orientation tool controller, and directional orientation tool controller controls the directional angle of directional orientation tool 18, drilling process middle-range
It is monitored in real time from sensor, and gives data feedback to orientation tool controller, directional orientation tool controller real-time control directional orientation tool
Directional angle.
As shown in Fig. 3 and Figure 12, a kind of hot dry rock robot explosion waterpower composite fracturing bores the explosive fracturing of completion system
Operation principle, ground assemble explosive fracturing completion tubular string 33, and tripping in explosive fracturing completion tubular string 33 reentries work during tripping in
20 work of tool, the input equipment of ground control system input explosive fracturing position data, data processing centre to position data into
Row coding, ground signal R-T unit emit position signal, and the shaft bottom signal receiving/transmission device of robot 17 receives position signal simultaneously
Transmitting to central processing unit decodes, the well of ground control system while ground control system draws explosive fracturing completion tubular string 33
Deep sensor real-time detection well depth data, if robot 17 does not reach design well depth, continuous traction, if the arrival of robot 17 is set
Counting well depth, then robot 17 emits explosive fracturing control signal to explosive fracturing execution system, and hydraulic anchor 22 sets controller, is temporary
Stifled tool controller and initiation control device work successively, and control hydraulic anchor, temporarily stifled device A, temporarily stifled device B, priming device 24 respectively,
24 ignition charge pipe nipple 25 of priming device, completes single-point explosive fracturing, and robot 17 is complete according to design data towing explosive fracturing
Well casing string 33 completes hot dry rock Microdrilling explosive fracturing operation according to above-mentioned flow.
As shown in Fig. 5 and Figure 13, a kind of hot dry rock robot explosion waterpower composite fracturing bores the hydraulic fracturing of completion system
Operation principle, ground assemble hydraulic fracturing completion tubular string 34, and tripping in hydraulic fracturing completion tubular string 34 reentries work during tripping in
20 work of tool, the input equipment of ground control system input hydraulic fracturing position data, data processing centre to position data into
Row coding, ground signal R-T unit emit position signal, the shaft bottom signal receiving/transmission device received bit confidence of shaft bottom control system
It number is concurrently incident upon central processing unit decoding, the well depth of ground control system while robot draws hydraulic fracturing completion tubular string 34
Sensor real-time detection well depth data, if robot does not reach design well depth, continuous traction, if robot reaches design well depth
Slush pump is suppressed, and robot 17 emits hydraulic fracturing and controls signal to hydraulic fracturing execution system, and hydraulic fracturing executes system
Hydraulic anchor sets controller, packer setting controller works successively, and controls hydraulic anchor 22, packer A28 and packing respectively
Device B30, slush pump increasing pump pressure carry out pressure break, complete single-point hydraulic fracturing job.
The present invention is applicable not only to hot dry rock exploitation, applies also for unconventionaloil pool(Gas hydrates, coal bed gas, cause
Close oil gas, shale gas)With the exploitation of conventional gas and oil resource.
Claims (7)
1. a kind of hot dry rock robot explosion waterpower composite fracturing bores completion system, which is characterized in that including ground control system,
Robot(17), drilling execution system, explosive fracturing executes system, hydraulic fracturing executes system, orientation execution system, reentries and holds
Row system;The robot(17)System is executed with drilling execution system, explosive fracturing, hydraulic fracturing executes system, fixed respectively
To execute system, reentry execution system be connected, the robot be used for creep into, explosive fracturing, hydraulic fracturing data acquisition and
Control;
The ground mouthful control system includes data processing centre, ground data acquisition sensor, is drilled well control system device, ground letter
Number R-T unit(4), preventer(3), coiled tubing wellhead assembly(2), coiled tubing work vehicle(9), input equipment, storage it is single
Member;The ground data acquisition sensor is drilled well control system device, ground signal R-T unit(4), input equipment, storage unit
It is connected respectively with data processing centre;The input equipment is for time break input, the input of explosive fracturing position data, waterpower
Pressure break position data inputs;
The drilling execution system is used for dual horizontal well(31)Drilling well transmits fracture network for hot dry rock heat and provides basis;It is described
Explosive fracturing executes system and is used for the dual horizontal well(31)Explosive fracturing is carried out, cracky heat is formed and transmits fracture network
Network;The hydraulic fracturing executes system and is used to carry out extending to form hydraulic fracturing to the heat transmission fracture network that explosive fracturing is formed
Crack(36), to link up dual horizontal well;
The drilling execution system is by coiled tubing connected in sequence(13), coiled tubing crossover sub(14), coiled tubing peace
Full connector(15), check valve(16), directional orientation tool(18), power drilling tool(19), reentry tool(20), drill bit(21)Composition, institute
State robot(17)It is arranged in check valve(16)With directional orientation tool(18)Between;
The explosive fracturing executes system by coiled tubing connected in sequence(13), coiled tubing crossover sub(14), continuous oil
Pipe safety joint(15), check valve(16), hydraulic anchor(22), temporary stifled device A(23), priming device(24), explosive pipe nipple(25), temporarily
Stifled device B(26), reentry tool(20), guide shoe(27)Composition;The robot(17)It is arranged in the check valve(16), hydraulic anchor
(22)Between;
The hydraulic fracturing executes system by coiled tubing connected in sequence(13), coiled tubing crossover sub(14), continuous oil
Pipe safety joint(15), hydraulic anchor(22), packer A(28), injection pipe nipple(29), packer B(30), reentry tool(20),
Guide shoe(27)Composition;The robot(17)It is arranged in the coiled tubing safety joint(15), hydraulic anchor(22)Between;
Robot(7)Control reentry tool(20)By well casing string(32)In the entry position tripping in of cluster well eye, well casing string
(32)To hot dry rock dual horizontal well(31)Drilling operation is carried out, after the completion coiled tubing work vehicle(9)Act well casing string;Machine
People(17)Control reentry tool(20)Ground is assembled into explosive fracturing completion tubular string(33)In the entry position tripping in of cluster well eye,
Robot(17)Pull explosive fracturing completion tubular string(33)And explosive fracturing is carried out to multiple pressure break points successively, complete explosive fracturing
Operation;Hydraulic fracturing completion tubular string(34)Is transmitted by fracture network and carries out extending to form hydraulic fracturing for the heat that explosive fracturing is formed and is split
Seam(36), to link up dual horizontal well(31).
2. a kind of hot dry rock robot explosion waterpower composite fracturing bores completion system according to claim 1, which is characterized in that
The robot(17)Including downhole data collection sensor, CPU element, drilling control module, shaft bottom signal receiving/transmission device, again
Enter tool control modules, directional orientation tool control module, directional orientation tool control module, explosive fracturing control module, hydraulic fracturing control
Molding block;The reentry tool control modules, drilling control module, directional orientation tool control module, explosive fracturing control module, water
It forces and splits control module and be connected respectively with CPU element output end;The downhole data collection sensor is filled with shaft bottom signal transmitting and receiving
It sets and is connected respectively with CPU element;The shaft bottom signal receiving/transmission device and ground signal R-T unit(4)Network is connected.
3. a kind of hot dry rock robot explosion waterpower composite fracturing bores completion system according to claim 1, which is characterized in that
The ground data acquisition sensor includes displacement sensor, pump pressure sensor, running speed sensor, rotary depth sensor, machine
Device people 17 goes out best feed speed and tractive force according to the data analysis that ground data acquisition sensor measures.
4. a kind of hot dry rock robot explosion waterpower composite fracturing bores completion system according to claim 1, which is characterized in that
The well control system device that is drilled includes displacement controller, pump pressure controller, coiled tubing drum speed controller.
5. a kind of hot dry rock robot explosion waterpower composite fracturing bores completion system according to claim 1, which is characterized in that
The downhole data collection sensor includes drilling speed sensor, bit weight sensor, torque sensor, vibrating sensor, distance biography
Sensor, displacement sensor, hydrostatic sensor, pit shaft identification sensor, aspect sensor, shaft bottom signal receiving/transmission device;The side
Level sensor is acquired for hole deviation data;The pit shaft identification sensor is used for real time scan wellbore shape parameter, mono- by CPU
Member identifies cluster well barrel shape and its direction parameter, robot(17)Central processing unit according to the direction parameter of cluster well cylinder
Control reentry tool(20)Into corresponding cluster well cylinder.
6. a kind of hot dry rock robot explosion waterpower composite fracturing bores completion system according to claim 1, which is characterized in that
The explosive pipe nipple(25)For modularization explosive pipe nipple(25), adjusted for ground explosive consumption.
7. a kind of hot dry rock robot explosion waterpower composite fracturing bores completion system according to claim 1, which is characterized in that
The priming device(24)By ground control system(36)Input equipment input detonator signal pass through robot(17)It ignites.
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