CN106837264A - A kind of down-hole casing perforating gun control system and control method - Google Patents
A kind of down-hole casing perforating gun control system and control method Download PDFInfo
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- CN106837264A CN106837264A CN201710039651.5A CN201710039651A CN106837264A CN 106837264 A CN106837264 A CN 106837264A CN 201710039651 A CN201710039651 A CN 201710039651A CN 106837264 A CN106837264 A CN 106837264A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000009471 action Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 19
- 238000010304 firing Methods 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 12
- 239000010410 layer Substances 0.000 description 9
- 239000011229 interlayer Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000020477 pH reduction Effects 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000001109 blastomere Anatomy 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
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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
- E21B43/11—Perforators; Permeators
- E21B43/119—Details, e.g. for locating perforating place or direction
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Abstract
The invention discloses a kind of down-hole casing perforating gun control system and control method, it is provided with：Ground signal sends system, for sending electromagnetic wave signal to down-hole casing perforating gun；Underground signal reception system, is communicated by electromagnetic wave with signal sending system；Electromagnetic wave signal for receiving signal sending system transmitting；Control command is extracted in underground signal treatment and control system, the treatment for realizing electromagnetic wave signal；Ignition system, for igniting primacord；Executing agency, for completing the action of down-hole casing perforating gun perforation；The mode for sending electromagnetic wave on ground sends control instruction to down-hole casing perforating gun；After down-hole casing perforating gun receives correct control instruction, control igniter ignites primacord, triggers perforating bullet, completes perforation action.The present invention is simple to operate, reliable, and low cost can be greatly enhanced fracture acidizing efficiency of construction, any opener is entered without the need under, farthest avoid underground complex accident.
Description
Technical field
The invention belongs to oil gas field storey increase design technical field, more particularly to a kind of down-hole casing perforating gun control system and
Control method.
Background technology
The not enough contradiction of domestic oil gas supply is increasingly protruded, and oil can adopt, easily adopt reserves is constantly reduced, and exploration and development is just
Develop to deep layer, unconventional elusive reservoir, stratum becomes increasingly complex, interlayer difference is big, and most reservoirs need in Completion Operations
Fracture acidizing is transformed, and it is most effective that fracture acidizing is transformed into solution interlayer contradiction, raising producing degree of reservoir, excavation interlayer potentiality
Measure.As technology develops, existing Oil/gas Well generally uses staged fracturing acidification technique, but currently without a kind of reliable pressure
Split Acidizing Process Technique can take into account efficiently, full-bore and avoid the aspects such as down hole problem, cause current staged fracturing acid
Change the problems such as efficiency of construction is not high, down hole problem is more.Although having been developed that remote control intelligence sliding sleeve at present, can be very big
Ground improves efficiency of construction, but due to high costs, fault rate is high, it is difficult to large-scale application at the scene.Domestic oil gas supply is not enough
Contradiction increasingly protrude, oil can adopt, easily adopt reserves is constantly reduced, exploration and development forward direction deep layer, unconventional elusive reservoir hair
Exhibition, stratum becomes increasingly complex, and interlayer difference is big, and most reservoirs need fracture acidizing to transform in Completion Operations, and fracture acidizing changes
Solution interlayer contradiction is caused, producing degree of reservoir is improved, is excavated the maximally effective measure of interlayer potentiality.It is existing as technology develops
There is Oil/gas Well generally using staged fracturing acidification technique, for this technique, how in the quick inter-drain for setting up pit shaft and stratum
The efficiency of construction of staged fracturing acidification technique is improved on the premise of circulation passage, down hole problem and later stage workover treatment shadow is reduced
Sound is an emphasis problem to be solved.Sliding sleeve as a kind of downhole tool that can link up/isolate Oil/gas Well and formation fluid,
Perforation is widely used in horizontal well point at present as a kind of method that can link up/isolate Oil/gas Well and formation fluid simultaneously
In section fracture acidizing working string.For sliding sleeve, current oilfield horizontal well staged fracturing acidifying uses mechanical pitching sliding sleeve, beats
The pressure break ball that every one-level sliding sleeve is required for putting into correspondingly-sized is opened, each layer sliding sleeve is opened in successively pitching from top to bottom during construction, often
One-level sliding sleeve tee internal diameter and pressure break ball internal diameter are differed, and from top to bottom, sliding sleeve tee and pressure break ball internal diameter increase step by step, this
Plant shift sleeve structure complicated, latus rectum is small, and pressure break series is limited；And when the reservoir later stage produces water, sliding sleeve cannot be realized closing closure,
Cause Oil ＆ Gas Productivity reduction or even scrap.For example, " a kind of ball-casting opened self-locking sliding sleeve " disclosed in Chinese patent literature, open
Number：CN201972661U, publication date：On 09 14th, 2011, opened this patent describes the pitching in net horizontal section operation
Pressure break sandblasting passage, and holding production channels open is locked, but still pitching segmentation is used, segments is limited." pressure is opened in doubles to patent
Difference sliding sleeve ", publication number：CN201723198U, publication date：On 01 26th, 2011, the utility model was promoted using pressure difference
Upper and lower fluid cylinder opens passage respectively to moving up and down, can solve pitching sliding sleeve cannot be used for horizontal bare hole well staged fracturing,
The problem of tool tubular column first paragraph is acidified, but still cannot solve to be segmented limitation problem.Based on this, some new machineries are developed again
The switchable sliding sleeve of formula, it is this kind of slide over fracture acidizing construct when, can by pitching or under enter coiled tubing belt switch TO
Sliding sleeve, produces water, it is necessary to during closedown sliding sleeve when the reservoir later stage, under enter coiled tubing belt switch instrument closedown sliding sleeve.Such as patent "
Plant the Intelligent sliding sleeve in selective switch slide bushing assembly ", publication number：CN202125290U, publication date：01 month 2012 25
Day, the utility model is to enter special opening-closing tool under utilizing, and opens and closes sliding sleeve.The greatest problem of this kind of sliding sleeve is continuous
Oil pipe belt switch tool switch sliding sleeve needs to use continuous oil pipe device, and operating cost is high, and continuous oil pipe operation needs to spend
Plenty of time, the method complex operation, long construction period, cost is very high.Based on this, develop again remote controlled electronic
Sliding sleeve, such as patent " for the ground control underground sliding sleeve of staged fracturing of horizontal well acidifying transformation ", publication number：
CN104088604A, publication date：On October 08th, 2014, the patent of invention sends control instruction remote control by ground
The opening and closing of underground sliding sleeve.This kind of sliding sleeve is although easy to operate, time-consuming, but complex structure, high cost, and easily go out
Existing failure, and limited by design size, it is impossible to meet the requirement of tubing string full-bore.For perforation, current oil gas field level
Well staged fracturing is acidified frequently with two methods of perforating gun sub-clustering perforation and hydraulic perforation.Perforating gun sub-clustering perforation is generally tied
Close bridging plug to apply together, realize successively perforation and Inter-zonal packing.For example " a kind of formula waterpower bridging plug that pumps into for exempting to bore plug is segmented patent
Fracturing process ", publication number：CN104564003A, publication date：On 04 29th, 2015, the patent of invention was by perforating gun point
Shower hole and bridging plug connection make mode, realize each layer of perforation, pressure break, packing connection work.But each layer will enter axle-linked cable-car down,
Increased activity duration and cost；If running into the problem of casing deformation simultaneously, perforating gun and bridging plug can be caused to enter down
In place, subsequent construction is influenceed.For hydraulic perforation mode, realize that perforation and pressure break connection are made using waterpower packing principle, effect
Rate is higher, for example patent " a kind of fracture acidizing fixed tubular column water-jet technique and its tubing string ", publication number：
CN103075139A, publication date：On 05 01st, 2013, but have oil pipe or coiled tubing during due to pressing crack construction in pit shaft
Interior, construction maximum pump discharge is restricted, it is difficult to the need for meeting volume fracturing.To sum up, foreign level well staged fracturing acidifying changes
Make in technique, newest sliding sleeve control method is that pitching is opened sliding sleeves at different levels and constructed successively in construction, treat that each layer construction is complete
After the completion of portion, anti-row pressure blastomere simultaneously bores the ball seat in each pitching sliding sleeve, is produced；In process of production, such as a certain layer
Position or some layer of position water outlet, then descend coiled tubing that the sliding sleeve of respective layer position is closed with sliding sleeve switch instrument；This technology can be real
Existing switching sliding sleeve, but segmentation series is limited；In domestic staged fracturing of horizontal well Acidizing, commonly used is also pitching
Formula sliding sleeve.But compared to same kind of products at abroad, this kind of sliding sleeve does not possess later stage closable function.And existing pitching sliding sleeve behaviour
Then need to wait ground pitching to fall the time that sliding sleeve tee is spent, it is ageing poor.And penetrated for newest at present
Hole method, is exactly that, using perforating gun sub-clustering perforation and hydraulic perforation, two methods are also required to lower entrance aperture rifle or perforation
Tubing string, not only increases the activity duration, can also run into down hole problem, and wherein hydraulic perforation is also limited by operational discharge capacity
System.
In sum, current remote control intelligence sliding sleeve exists with high costs, and fault rate is high, it is difficult on a large scale should at the scene
With.
The content of the invention
It is an object of the invention to provide a kind of down-hole casing perforating gun control system and control method, it is intended to solve current
Remote control intelligence sliding sleeve exists with high costs, and fault rate is high, it is difficult to the problem of large-scale application at the scene.
The present invention is achieved in that a kind of down-hole casing perforating gun control system, the down-hole casing perforating gun control
System is provided with：Ground signal sends system, for sending the low-frequency electromagnetic wave comprising control command to down-hole casing perforating gun
Signal；
Underground signal reception system, is communicated by electromagnetic wave with signal sending system；For receiving signal sending system hair
The electromagnetic wave signal penetrated；
Control command is extracted in underground signal treatment and control system, the treatment for realizing electromagnetic wave signal；And to igniting
Device sends order；
Ignition system, primacord is ignited for igniter；
Executing agency, for completing the action of down-hole casing perforating gun perforation.
Further, the down-hole casing perforating gun includes perforation gun body；
The outer cover of the perforation gun body is equipped with sealing shell；Inlayed in perforation gun body and control circuit in underground is installed
Plate, the signal input part of underground control board is electrically connected with fluxgate sensor；
Igniter, the first primacord, the second primacord and perforating bullet are also equipped with the perforation gun body；
The signal output part connection igniter of the underground control board, igniter is connected with the first primacord, and second
Primacord is the prolongation of the first primacord, and the second primacord is laid along perforating gun body outer wall, through perforating bullet；
The perforating gun body interior is inlayed and is provided with down-hole battery group, and down-hole battery group controls electricity by wire with underground
Road plate electrical connection, is also simultaneously that fluxgate sensor and igniter are powered.
Further, the lower end of the perforation gun body is provided with through hole, and internal thread is machined with through hole, and perforating bullet passes through spiral shell
Line is arranged on through hole.
Further, the sealing shell is connected through a screw thread with the perforation gun body, and perforating gun outer body is provided with
The sealing ring matched with sealing shell.
Further, the ground signal sends system and uses vertical dipole antenna mode, including surface em ripple signal
Control and excitation set, electrode；Grounded metal bar and well head respectively as vertical dipole antenna radiation pattern two electricity
Pole interface.
Another object of the present invention is to provide a kind of down-hole casing perforation of the down-hole casing perforating gun control system
Rifle control method, the down-hole casing perforating gun control method includes：The mode for sending electromagnetic wave on ground is penetrated to down-hole casing
Hole rifle sends control instruction；After down-hole casing perforating gun receives correct control instruction, control igniter ignites primacord, touches
Launch hole bullet, completes perforation action；Launch equipment by surface em ripple signal first to load control command in the form of a carrier wave
It is amplified and launches in low frequency sinusoidal electromagnetic wave signal, wherein control command is one group 3,4,5,6,7
Position, 8,9, the binary coding of the more seniority top digit within 10 digits or 1000；Underground fluxgate sensor receives this
The individual electromagnetic wave carrier signal with control command, and underground control board is transmitted the signal to, underground control board warp
The treatment such as signal amplification, filtering are crossed, the control command in carrier signal is extracted, and it is default with underground control board
Control instruction is contrasted, if the control command that ground sends is inconsistent with the default control instruction of underground control board,
Then underground control board does not export firing command to igniter, if control command and underground control board that ground sends
Default control instruction is consistent, then underground control board exports firing command, igniter fire to igniter.
Further, the lower end of the perforation gun body is provided with tapped through hole, and perforating bullet is by being threadably mounted at
In through hole on perforation gun body；Perforating bullet phase angle can be entered according to 30 °, 45 °, 60 °, 90 °, 120 ° one of them as needed
Row arrangement；Arranged with arbitrarily angled between 0 °~180 ° also according to special requirement；Primacord spreads along perforating gun outer body
If.
Down-hole casing perforating gun control system and control method that the present invention is provided, simple to operate, reliable, low cost, energy
Fracture acidizing efficiency of construction is enough greatly enhanced, any opener is entered without the need under, farthest avoid underground
Complex accident.The present invention is capable of the perforation action of long distance wireless real-time control down-hole casing perforating gun, sets up pit shaft with stratum
Communicating passage, eliminate existing underground sliding sleeve need pitching or under enter coiled tubing opening program, save the plenty of time
And cost；Meanwhile, down-hole casing perforating gun is a kind of full-bore downhole tool, will not produce any doing for subsequent job and production
Disturb；During the down-hole casing perforating gun is constructed at the scene, generally with sleeve pipe it is disposable under enter multiple down-hole casing perforating guns, be ensure
The independent control of each down-hole casing perforating gun is opened, in advance for each down-hole casing perforating gun sets different controls before going into the well
System instruction, each down-hole casing perforating gun retrieves surface em ripple signal lasting, only when the surface em ripple for receiving
When the control instruction that signal is set with itself matches, down-hole casing perforating gun can just be acted.
Brief description of the drawings
Fig. 1 is surface em ripple control down-hole casing perforating gun structural representation provided in an embodiment of the present invention.
Fig. 2 is the surface em ripple control down-hole casing that job site provided in an embodiment of the present invention possesses double borehole conditions
Perforating gun schematic diagram.
Fig. 3 be down-hole casing perforating gun provided in an embodiment of the present invention do not carry out perforation act when structural representation.
Fig. 4 is that down-hole casing perforating gun provided in an embodiment of the present invention carries out the structural representation after perforation action.
Fig. 5 is down-hole casing perforating gun control method flow chart provided in an embodiment of the present invention.
1st, metallic rod electrode；2nd, surface em ripple signal transmitting equipment；3rd, well head；4th, well；5th, cementing slurry；6th,
One down-hole casing perforating gun；7th, the second down-hole casing perforating gun；8th, sleeve pipe；9th, down-hole casing perforating gun n；10th, the first twin-well
Electrode；11st, the first twin-well well；12nd, the second twin-well field plate；13rd, the second twin-well well；14th, sealing shell；15th, magnetic
Open gate sensor；16th, underground control board；17th, igniter；18th, sealing ring；19th, the first primacord；20th, down-hole battery group；
21st, the second primacord；22nd, perforating bullet；23rd, perforation gun body；24th, through hole；25th, ground signal sends system；26th, underground signal
Reception system；27th, underground signal treatment and control system；28th, ignition system；29 executing agencies.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Application principle of the invention is explained in detail below in conjunction with the accompanying drawings.
As shown in figure 1, down-hole casing perforating gun long-range control method provided in an embodiment of the present invention sends electromagnetism on ground
The mode of ripple sends control instruction to down-hole casing perforating gun；After down-hole casing perforating gun receives correct control instruction, control
Igniter processed ignites primacord, triggers perforating bullet, completes perforation action.
The lower end of the perforation gun body is provided with tapped through hole, and perforating bullet is by being threadably mounted at perforating gun sheet
In through hole on body；Perforating bullet phase angle can be arranged according to 30 °, 45 °, 60 °, 90 °, 120 ° one of them as needed；
Can also be arranged with arbitrarily angled between 0~180 ° according to special requirement；Primacord is laid along perforating gun outer body.
The sealing shell is connected through a screw thread with the perforation gun body, and perforating gun outer body is provided with outer with sealing
The sealing ring of shell phase matching.
Described surface em ripple sending method, when scene only have a bite Oil/gas Well when, select Oil/gas Well sleeve pipe and
, respectively as two electrodes of vertical dipole antenna radiation pattern, well head and metallic rod are used as electrode for another grounded metal bar
Interface, as shown in Figure 1；When scene meets double borehole conditions, the sleeve pipe or oil pipe of any two mouthfuls of wells may be selected as vertical idol
Two electrodes of pole sub-antenna radiation pattern, two mouthfuls of well heads of well (twin-well field plate 1 10 and twin-well field plate 2 12) are used as electricity
Pole interface, as shown in Figure 2.
As shown in figure 5, down-hole casing perforating gun control system provided in an embodiment of the present invention includes：Ground signal sends system
The treatment of system 25, underground signal reception system 26, underground signal and control system 27, ignition system 28, executing agency 29.
Ground signal sends system 25, for sending electromagnetic wave signal to down-hole casing perforating gun.
Underground signal reception system 26, is communicated by electromagnetic wave with signal sending system 25；System is sent for receiving signal
The electromagnetic wave signal of the transmitting of system 25.
Control command is extracted in underground signal treatment and control system 27, the treatment for realizing electromagnetic wave signal.
Ignition system 28, for igniting primacord.
Executing agency 29, for completing the action of down-hole casing perforating gun perforation.
Equipment is launched by surface em ripple signal first and control command is loaded into the form of a carrier wave low frequency sinusoidal electromagnetism
It is amplified and launches in ripple signal, wherein control command is one group 3,4,5,6,7,8,9,10
Number or 1000 within more seniority top digit binary coding；Underground fluxgate sensor receives this and carries control command
Electromagnetic wave carrier signal, and underground control board is transmitted the signal to, underground control board is amplified by signal, filters etc.
Treatment, extracts the control command in carrier signal, and is contrasted with the default control instruction of underground control board,
If the control command that ground sends is inconsistent with the default control instruction of underground control board, underground control board is not
Firing command is exported to igniter, if control command and the default control instruction one of underground control board that ground sends
Cause, then underground control board exports firing command, igniter fire to igniter.
The down-hole casing perforating gun of the embodiment of the present invention includes perforation gun body 23, and the outer cover of perforation gun body 23 is equipped with
Sealing shell 14；Inlayed in perforation gun body 23 and underground control board 16 is installed, the signal of underground control board 16 is defeated
Enter end to be electrically connected with fluxgate sensor 14；Igniter 17, the first primacord 19 are also equipped with perforation gun body 23, second leads
Quick-fried rope 21 and perforating bullet 22.The signal output part connection igniter 17 of underground control board 16, igniter 17 is led quick-fried with first
Rope 19 is connected, and the second primacord 21 is the prolongation of the first primacord 19, and the second primacord 21 spreads along perforating gun body outer wall
If, through perforating bullet 22；Inlayed inside perforation gun body 23 and down-hole battery group 8 be installed, down-hole battery group 20 by wire with
Underground control board 16 is electrically connected, and is also simultaneously that fluxgate sensor 14 and igniter 17 are powered.Other down-hole battery group 20
In the circuit being connected with igniter 17, only after underground control board 16 sends order, down-hole battery group 20 and igniter
The circuit of 17 connections is just turned on.
The lower end of the perforation gun body 23 is provided with through hole 24, and internal thread is machined with through hole 24, and perforating bullet 22 passes through
It is threadably mounted on through hole 24.
The sealing shell 14 is connected through a screw thread with the perforation gun body 23, the outside of perforation gun body 23 be provided with
The sealing ring 18 that sealing shell 14 matches.
Ground signal sends system 25 and uses vertical dipole antenna mode, including the control of surface em ripple signal and excitation
Equipment, electrode etc., when scene only has a bite Oil/gas Well, select the sleeve pipe and another grounded metal bar of Oil/gas Well to make respectively
It is two electrodes of vertical dipole antenna radiation pattern, grounded metal bar and well head is sent out respectively as vertical dipole antenna
Two electrode interfaces of mode are penetrated, as shown in Figure 1；When well site there are 2 mouthfuls or more wells, the wherein two mouthfuls well heads of well are arbitrarily selected
As two electrode interfaces of vertical dipole antenna radiation pattern, as shown in Figure 2.
Underground signal reception system 26, is communicated by electromagnetic wave with signal sending system；For receiving signal sending system
The electromagnetic wave signal of transmitting；The fluxgate sensor that underground is installed receives the electromagnetic wave signal that ground sends, and receiving
Signal is sent to underground control board.
Underground signal treatment and control system 17, the treatment for realizing electromagnetic wave signal, underground control board is to magnetic
The signal that open gate sensor is received such as is nursed one's health, is filtered at the treatment, extracts control information and the finger being previously set with itself
Order is contrasted, if unanimously, then it is assumed that receive control instruction, then control igniter fire.
Structure of the invention is further described with reference to operation principle.
Down-hole casing perforating gun sends into underground with sleeve pipe, and perforating bullet is by being threadably mounted on through hole.Sealing shell
Underground control board and down-hole battery group are sealed in the control chamber on perforation gun body by sealing ring.Work as terrestrial operation
When personnel need to allow the down-hole casing perforating gun carry out perforation, control signal is sent to underground on ground, down-hole casing perforating gun connects
After receiving control signal, primacord is ignited in control board control igniting in underground, triggers perforating bullet perforation, realizes down-hole casing
Perforating gun completes perforation action.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of down-hole casing perforating gun control system, it is characterised in that the down-hole casing perforating gun set-up of control system has：
Ground signal sends system, for sending electromagnetic wave signal to down-hole casing perforating gun；
Underground signal reception system, is communicated by electromagnetic wave with signal sending system；For receiving signal sending system transmitting
Electromagnetic wave signal；
Control command is extracted in underground signal treatment and control system, the treatment for realizing electromagnetic wave signal；
Ignition system, for igniting primacord；
Executing agency, for completing the action of down-hole casing perforating gun perforation.
2. down-hole casing perforating gun control system as claimed in claim 1, it is characterised in that the down-hole casing perforating gun bag
Include perforation gun body；
The outer cover of the perforation gun body is equipped with sealing shell；Inlayed in perforation gun body and underground control board be installed,
The signal input part of underground control board is electrically connected with fluxgate sensor；
Igniter, the first primacord, the second primacord and perforating bullet are also equipped with the perforation gun body；
The signal output part connection igniter of the underground control board, igniter is connected with the first primacord, second lead it is quick-fried
Rope and the first primacord are same primacords, and the second primacord is the prolongation of the first primacord, and the second primacord edge is penetrated
Hole gun body outer wall laying, through perforating bullet；
The perforating gun body interior is inlayed and is provided with down-hole battery group, and down-hole battery group is by wire and underground control board
Electrical connection, is also simultaneously that fluxgate sensor and igniter are powered.
3. down-hole casing perforating gun control system as claimed in claim 2, it is characterised in that the lower end of the perforation gun body
Through hole is provided with, internal thread is machined with through hole, perforating bullet is by being threadably mounted on through hole.
4. down-hole casing perforating gun control system as claimed in claim 2, it is characterised in that the sealing shell is penetrated with described
Hole gun body is connected through a screw thread, and perforating gun outer body is provided with the sealing ring matched with sealing shell.
5. down-hole casing perforating gun control system as claimed in claim 1, it is characterised in that the ground signal sends system
Using vertical dipole antenna mode, including the control of surface em ripple signal and excitation set, electrode；Grounded metal bar and well
Two electrode interfaces of the mouth respectively as vertical dipole antenna radiation pattern.
6. a kind of down-hole casing perforating gun control method of down-hole casing perforating gun control system as claimed in claim 1, it is special
Levy and be, the down-hole casing perforating gun control method includes：Launch equipment by surface em ripple signal first to order control
Order is loaded into low frequency sinusoidal electromagnetic wave signal and is amplified and launches in the form of a carrier wave, and wherein control command is one group 3
Position, 4,5,6,7,8,9, the binary coding of the more seniority top digit within 10 digits or 1000；Underground magnetic flux
Door sensor receives this electromagnetic wave carrier signal with control command, and transmits the signal to underground control board,
Underground control board is amplified by signal, filtering process, and the control command in carrier signal is extracted, and is controlled with underground
The default control instruction of circuit board processed is contrasted, if the control command of ground transmission and the default control of underground control board
System instruction it is inconsistent, then underground control board not to igniter export firing command, if ground send control command with
Control board default control instruction in underground is consistent, then underground control board exports firing command, igniter to igniter
Igniting.
7. down-hole casing perforating gun control method as claimed in claim 6, it is characterised in that the lower end of the perforation gun body
Tapped through hole is provided with, perforating bullet is by being threadably mounted in the through hole on perforation gun body；Perforating bullet phase angle can
Arranged according to 30 °, 45 °, 60 °, 90 °, 120 ° one of them as needed；Also according to special requirement between 0 °~180 °
It is arbitrarily angled to be arranged；Primacord is laid along perforating gun outer body.
Priority Applications (1)
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| CN108708682A (en) * | 2018-04-24 | 2018-10-26 | 江苏航天鸿鹏数控机械有限公司 | Ground remote control downhole hydraulic cutting tool and control method |
| CN109057774A (en) * | 2018-07-16 | 2018-12-21 | 西安物华巨能爆破器材有限责任公司 | Accurate comprehensive control underwater wireless communicates the spread of the rumours device |
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| CN111411924A (en) * | 2019-12-09 | 2020-07-14 | 大庆油田有限责任公司 | Intelligent perforation initiation method and device and intelligent perforation initiation water well |
| CN112012699A (en) * | 2019-05-28 | 2020-12-01 | 中石化石油工程技术服务有限公司 | Perforation detonation method and perforation detonation device |
| CN115217449A (en) * | 2022-08-11 | 2022-10-21 | 川南航天能源科技有限公司 | Wireless electromagnetic wave multistage ignition system and method for oil-gas well |
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