CN108894758A - A kind of oil/gas well multi-stage perforator initiation control method based on accelerometer - Google Patents
A kind of oil/gas well multi-stage perforator initiation control method based on accelerometer Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000000977 initiatory effect Effects 0.000 title claims abstract description 12
- 230000001133 acceleration Effects 0.000 claims abstract description 183
- 238000005474 detonation Methods 0.000 claims abstract description 34
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- 239000003999 initiator Substances 0.000 claims abstract description 11
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- 230000000630 rising effect Effects 0.000 claims abstract 2
- 230000037452 priming Effects 0.000 claims description 34
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- 230000008569 process Effects 0.000 description 9
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- 239000003129 oil well Substances 0.000 description 5
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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
- E21B43/1185—Ignition systems
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Abstract
The invention discloses a kind of oil/gas well multi-stage perforator initiation control method based on accelerometer, this method is sent to digitial controller by the acceleration information that acceleration transducer will test, and starting judgement is successively carried out by digitial controller and acceleration pulse number detects the judgement in two stages；The starting judgement stage includes the judgement of three groups of acceleration pulse signal periods, and the judgement of every group of acceleration pulse signal period includes rising judgement stage, stop phase and decline judgement stage；When detect had been started up three groups of acceleration pulse signal periods after, stop after 1s in fixed detonation detection time section t9~t17, when detecting 1 acceleration pulse signal period, i.e. first order initiator detonates；When detecting 2 acceleration pulse signal periods, i.e. second level initiator detonates；And so on realize multi-stage perforator detonation operation.It is complicated that this method solve equipment operations in existing multi-stage perforator detonating technique, the problem of existing fuze detection inaccuracy.
Description
Technical field
The invention belongs to computer application and power electronics fields, and the present invention relates to a kind of oil based on accelerometer
Gas well multi-stage perforator initiation control method.
Background technique
Multi-stage perforator detonation based on pressure coding is the relatively common oil well perforation method of ignition, but its applicability ratio
Poor, for the hole condition of different situations, success rate of detonating also is not quite similar.In the perforating oil gas well operation using pressure coding
In the process, it is directed to the relatively good well of hole condition and suppresses that effect is good, pressure amplitude variation is obvious, perforation success rate is higher；For well
It suppresses that the variation of rear down-hole pressure is smaller, and perforation success rate is lower to the poor oil well of condition, and to suppress equipment operation multiple on ground
It is miscellaneous cumbersome, cause operator's operating pressure larger.
Based on the multi-stage perforator detonation mode of cable coding, detonation is substantially increased for the oil well of construction environment complexity
Accuracy rate, but the coding mode needs host computer to be used cooperatively simultaneously with slave computer, and due to single core coaxial cable material
Difference, the success rate of detonation also will receive certain influence, can not effectively distinguish the command code being previously set sometimes and produce
Raw accidentally quick-fried situation, causes engineering accident, construction delay and property loss.
Although requiring in addition to increase in conclusion above two method of ignition utilization rate in oil well operation is higher
The cumbersome large scale equipment of terrestrial operation.To solve the above-mentioned problems, it needs using a kind of new operational means and coding method, it will
Perforating process is further simplified, and reduces the labor intensity of operator, while achieving the purpose that exploding perforating hole high success rate.
Summary of the invention
The oil/gas well multi-stage perforator detonation based on accelerometer that in order to solve the above technical problems, The present invention provides a kind of
Control method solves equipment operation complexity in existing multi-stage perforator detonating technique, existing fuze detection inaccuracy
Problem.
The present invention is to be achieved through the following technical solutions：
A kind of oil/gas well multi-stage perforator initiation control method based on accelerometer, this method will by acceleration transducer
The acceleration information that is detected be equipped with the priming device of acceleration transducer is sent to digitial controller, by digitial controller
It successively carries out starting judgement and acceleration pulse number detects the judgement in two stages；Starting the judgement stage includes three groups of acceleration
The judgement of pulse signal cycle, the judgement of every group of acceleration pulse signal period include rise the judgement stage, stop phase and under
The judgement stage drops；
Rise the judgement stage judgment method be：
1) in 0~t1 stage, acceleration transducer detects the detonation for being equipped with acceleration transducer within 0~t1 period
The acceleration of device, and the acceleration information that will test is sent to digitial controller, the every 20ms of digitial controller samples one
Acceleration point, samples 20 point b1, b2 ... b20 in total, and digitial controller is filtered and seeks to 20 sampled points
Average value obtains acceleration value a1 and acceleration direction within 400ms this period, by acceleration value a1 and positive acceleration
The value of threshold value a2 is compared, if a1>A2 then judges that this moment acceleration is in reasonable value range, is otherwise in unreasonable model
It encloses；
2) in t1~t2 stage, digitial controller detects the acceleration value at this moment in 18s at interval of 1s, judges to accelerate
Whether angle value is 0, if the acceleration value detected in 18s is zero, the priming device that judgement is equipped with acceleration transducer is done
Linear uniform motion；
3) in t2~t3 stage, digital controller senses acceleration transducer is transmitted through the data come, in duration 600ms
Interior, every 40ms takes an acceleration point, and taking 15 points in total is respectively c1, and c2 ... c15, digitial controller is to 15 sampled points
It is filtered simultaneously averaged, size and the acceleration direction of acceleration value a3 during this period of time is obtained, will add
Velocity amplitude a3 is compared with a4, if a3<A4, and a3 is the acceleration of a negative sense, then judges that this moment acceleration is in and close
Reason value range；
The judgment method of stop phase is：
4) in t3~t4 stage, digitial controller detects 15 points in 1s and judges that the acceleration value in t3~t4 time is
No is 0, and if 0, then t3~t4 stage priming device remains static；
Decline the judgement stage judgment method be：
5) in t4~t5 stage, digital controller senses acceleration transducer is transmitted through the data come, in duration 400ms
Interior, every 20ms takes an acceleration point, and obtaining 20 points in total is respectively d1, and d2 ... d20, digitial controller is to 20 samplings
Point is filtered and averaged, obtains size and the acceleration direction of acceleration value a4；By acceleration value a4 and a3
It is compared, if a4>A3, and a4 is a decline acceleration, then judges that this moment acceleration is in reasonable value range；
6) in t5~t6 stage, digital controller senses acceleration transducer is transmitted through the data come, and digitial controller is in 18s
It is interior to take a point every 1s, the acceleration value at this moment is detected, judges whether acceleration value is 0, if the acceleration of the detection in 18s
Angle value is zero, then the priming device that judgement is equipped with acceleration transducer does linear uniform motion；
7) in t6~t7 stage, digital controller senses acceleration transducer is transmitted through the data come, in duration 600ms
It is interior, an acceleration point is taken every 40ms, taking 15 points in total is respectively e1, and e2 ... e15, digitial controller is to 15 samplings
Point is filtered and averaged, obtains the acceleration value size of a positive acceleration a2 during this period of time
With acceleration direction, acceleration value a2 is compared with a1, if a2<A1 then judges that this moment acceleration is in reasonable value model
It encloses；
8) in t7~t8 stage, digitial controller detects 15 points in 1s and judges that the acceleration value in t3~t4 time is
No is 0, and if 0, then t7~t8 stage priming device remains static, then judges that this moment acceleration is in reasonable value model
It encloses；
9) when the judgement of three groups of acceleration pulse signal periods is in reasonable value range, priming device starting judges item
Part is completed to prepare detonation, otherwise returns to 0 position and re-starts detection；
The detection of acceleration pulse number includes the following steps：
10) when detect had been started up three groups of acceleration pulse signal periods after, stop after 1s in fixed detonation detection
In 9~t17 of time period t, when detecting 1 group of acceleration pulse signal period, i.e. first order initiator detonates；When detecting 2 groups
The detonation of acceleration pulse signal period, i.e. second level initiator；And so on realize multi-stage perforator detonation operation, wherein it is each
Grade exploding perforating hole device all presets detonation command code number, and corresponding series corresponds to its corresponding acceleration pulse detection
Number.
When detect had been started up three groups of acceleration pulse signal periods after, stop after 1s in fixed detection time of detonating
In section t9~t17, if detecting, the pulse number of acceleration pulse signal period and setting are unequal, when clamped between at the end of
Then this grade of priming device does not export ignition order, is transferred to the starting judgement stage.
Compared with prior art, the invention has the following beneficial technical effects：
The present invention is realized for complicated conditions down-hole, and especially the multistage detonation of oil field complexity conditions down-hole is digital
Change control, using the method for detecting acceleration pulse coding in the time at equal intervals, accurately identify certain grade of priming device and carry out perforation,
Improve the success rate of the detonation of multistage detonation device.This method be suitable for for complex hole condition exploding perforating hole operate, can compared with
Detection and accurate judgement effectively are carried out to the downhole perforation initiator acceleration change stage within the scope of small acceleration change, gram
The interference effect during going into the well has been taken, ensure that the accurate safety of detonation carries out.
Detailed description of the invention
Fig. 1 is priming device in the oil/gas well multi-stage perforator initiation control method provided by the invention based on accelerometer
Application circuit schematic diagram；
Fig. 2 acceleration pulse coding detonation timing diagram；
In Fig. 1,1. power supplys, 2. supply voltage supervisions, 3. regulated power supplies, 4. driving circuits, 5. communication interfaces, 6. storages
Device, 7. digitial controllers, 8. acceleration transducers, 9. temperature sensors, 10. power switch tube Q1,11. output ends.
In Fig. 2, timing diagram is divided into each stage, 1. starts the judgement stage, 2. pulse number detection-phase.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Fig. 1 is participated in, the present invention is based on the application circuits of the oil/gas well multi-stage perforator priming device of Fig. 1, in order to improve order
The accuracy rate of identification proposes following acceleration pulse detonation timing (as shown in Figure 2) for underground acceleration change problem,
To accurately be safely completed multistage detonation.
Oil/gas well multi-stage perforator initiation control method proposed by the present invention based on accelerometer, be it is a kind of at equal intervals when
The method of interior detection acceleration pulse coding number.This method will test data transmission to number by acceleration transducer 8
Controller 7 successively carries out correlated judgment by digitial controller 7, and deterministic process is divided into following two stages：
1. (time in stage：0~t9) start the judgement stage, the starting judgement stage is made of three groups of acceleration pulse signals, and 0
The priming device climb that moment is equipped with acceleration transducer since starting point is 10m, and the rise time is 20s, 0~
The t1 stage generates the acceleration of an a1, and positive acceleration threshold value is a2, a1>A2, and priming device does even add in 400ms
Speed linear motion rises, and acceleration transducer 8 detects adding for the priming device for being equipped with acceleration transducer within the time period
Speed, the every 20ms of digitial controller 7 sample a point, sample 20 point b1, b2 ... b20 in total, digitial controller is to 20 points
It is filtered simultaneously averaged, the acceleration value and acceleration direction in this period is obtained, judges that its this moment adds
Whether speed is in reasonable value range；
T1~t2 stage, the priming device for being equipped with acceleration transducer are linear uniform motion 18s, and acceleration 0 adds
Velocity sensor will test data and be sent to digitial controller 7, and digitial controller 7 detected this moment at interval of one second in 18s
Acceleration value, will test data and handled, judge whether acceleration value is 0；
T2~t3 stage, priming device can generate the acceleration of a negative sense, and the value of this acceleration is a3, a3<A4, and
And the duration is 600ms, therefore digitial controller 7 detects acceleration transducer 8 and is transmitted through the data come, every 40ms takes one to add
Speed point, taking 15 points in total is respectively c1, c2 ... c15, and judges the size and Orientation of its acceleration a3；
T3~t4 stage priming device remains static, and duration 1s, digitial controller detects 15 in 1s
Point judges whether the acceleration value in t3~t4 time is 0, and apart from starting point 10m, priming device exists priming device at this time
This stage just completes the acceleration detection in uphill process.
Decline stage, since priming device is transferred since static, can be generated under one since t4~t5 stage
Acceleration a4, and a4 drop>The duration in a3, t4~t5 stage is 400ms, and every 20ms takes an acceleration point, Zong Gongqu
20 points are respectively d1, d2 ... d20, digitial controller 7 is filtered data, obtain acceleration value size and
Direction；T5~t6 stage priming device is in linear uniform motion state, and time 18s takes a point every 1s, digital control
Device 7 carries out processing to data and analyzes and determines whether acceleration value at this time is 0；
T6~t7 stage priming device generates positive acceleration an a2, a2<A1, duration 600ms, every
40ms takes an acceleration point, and being total up to 15 points is respectively e1, e2 ... e15, is handled to obtain to this 15 sampled points
Acceleration direction and size；
T7~t8 stage remains static, and rests on initial point position, duration 1s, therefore 15 are taken in 1s
A acceleration point, whether detection acceleration value is 0, so far completes one group of acceleration pulse signal period, is divided into three small
Stage rises judgement stage, stop phase and decline judgement stage.Timing judgement figure such as Fig. 2 stage in these three small stages is 1.
It is shown, if there is state error at one or time, (time error range was ± 10ms in 0~t1 stage, when t1~t2 stage
Between error ± 0.5s, t2~t3 phases-time be ± 20ms, t3~t4 stage be ± 0.1s, t4~t5 stage be ± 10ms, t5
~t6 phases-time error ± 0.5s, t6~t7 phases-time are ± 20ms, and t7~t8 stage is ± 0.1s) there is larger gap
Then digitial controller detects again since 0 moment.Above-mentioned is the condition of one group of acceleration pulse signal period judgement, as opening
1. dynamic judgement stage, stage share three groups of startings and judges the acceleration pulse signal period, second group and third group and first group of class
Seemingly, it can be determined that go out acceleration condition and time.As described above, when the time of three groups of each operating statuses and acceleration value meet
Fig. 2 stage 1. shown in state when, priming device starting judge stage conditions complete prepare detonate, otherwise return to 0 position again into
Row detection.
2. acceleration pulse number detection-phase (time in stage：T9~t17), the set time (being set in advance before going into the well)
1. pulse number detection, stage show that priming device can carry out detonation operation after the completion, every level-one exploding perforating hole device is all default
It detonates well command code number, corresponding series correspond to its corresponding acceleration pulse and detects number, when detecting that acceleration opens
After dynamic three group pulses, stop after 1s fixed detonation detection time section (in Fig. 2 the stage 2. fixed detonation detection time section t9~
T17 when detecting 1 acceleration pulse period in), i.e. first order initiator detonates；When detecting 2 acceleration pulse periods,
I.e. second level initiator detonates；And so on realize multi-stage perforator detonation operation.
Specifically, up and down, stopped process are quickly carried out on well, 7 continuous acquisition acceleration point of underground digitial controller
And with the stage 1. shown in acceleration value, direction and duration be compared, when acceleration value and direction and it is lasting when
Between with when 1. 0~t3 is consistent the stage, system is considered that acceleration detection pulse is ascent stage；Stationary state acceleration and time
When 1. t3~t4 is consistent with the stage, system is considered the pulse retention time；When acceleration value and direction and duration and rank
For section when 1. t4~t8 is consistent, system is considered the pulse decline stage, therefore one group of acceleration pulse signal period is raised bench
Section is kept for stage, decline stage three phases, and underground digitial controller 7 repeats aforesaid operations can be in the set time (in Fig. 2
Stage 2. fixed detonation detection time section t9~t17) in judge the pulse number suppressed on well, with go into the well before the pulse that sets
Number compares, if pulse number is equal, when clamped between at the end of this grade of priming device output ignition order complete detonation
Process；If pulse number is unequal, when clamped between at the end of this grade of priming device do not export ignition order, before being transferred to starting
Repeat above-mentioned stage 1. deterministic process to the stage 3..
Stage, 1. the stage 2. in underground work, carried out up and down and static along with by the time provided on well
1. operation, stage are starting deterministic process, above mentioning since initial point generates acceleration and then generate to linear uniform motion
One reversed acceleration stops the regular hour, then carries out step-down operation, generates an acceleration to linear uniform motion
Then it generates a reversed acceleration stopping and returns to initial point position.2. stage is detection acceleration pulse in the set time
The number stage.
The present invention is based on the oil/gas well multi-stage perforator initiation control methods of accelerometer, dependent on control electricity shown in FIG. 1
Road is specifically implemented in the following way：
Step 1, input direct-current voltage, DC voltage are 12V~16V；
Step 2 carries out voltage transformation control to the DC voltage inputted in step 1, and step includes：
2.1) acceleration signal that digitial controller 7 obtains acceleration transducer 8 detects, and meets entry condition
When, otherwise starting detonation judgement and data record continue to acquire acceleration signal；
2.2) digitial controller 7 carries out the detection of pulse number, the pulse number of detection and the pulse of setting in the stage
When number is identical, starting ignition is exported after the set time；
2.3) it after the completion of ignition duration, closes power switch tube MOSFETQ1, by above step, that is, completes primary
The judgement and operation of igniting.
Oil/gas well multi-stage perforator initiation control method provided by the invention based on accelerometer, for complex hole condition
Oil well, solve in existing multi-stage perforator detonating technique that equipment operation is complicated, existing fuze detection inaccuracy is asked
Topic.
The present invention is realized for complicated conditions down-hole, and especially the multistage detonation of oil field complexity conditions down-hole is digital
Change control, using the method for detecting acceleration pulse coding in the time at equal intervals, accurately identify certain grade of priming device and carry out perforation,
Improve the success rate of the detonation of multistage detonation device.This method be suitable for for complex hole condition exploding perforating hole operate, can compared with
Detection and accurate judgement effectively are carried out to the downhole perforation initiator acceleration change stage within the scope of small acceleration change, gram
The interference effect during going into the well has been taken, ensure that the accurate safety of detonation carries out.
In addition this method initiation control is powered using down-hole battery, with traditional pressure perforating technology and cable perforation technology
It compares, do not need increase ground suppresses equipment and cable, simplifies operating process.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (2)
1. a kind of oil/gas well multi-stage perforator initiation control method based on accelerometer, which is characterized in that this method passes through acceleration
The acceleration information for the priming device for being equipped with acceleration transducer that degree sensor will test is sent to digitial controller, by
Digitial controller successively carries out starting judgement and acceleration pulse number detects the judgement in two stages；Starting the judgement stage include
The judgement of three groups of acceleration pulse signal periods, the judgement of every group of acceleration pulse signal period include rising the judgement stage, stopping
Only stage and decline judgement stage；
Rise the judgement stage judgment method be：
1) in 0~t1 stage, acceleration transducer detects the priming device for being equipped with acceleration transducer within 0~t1 period
Acceleration, and the acceleration information that will test is sent to digitial controller, and the every 20ms of digitial controller samples an acceleration
Point is spent, samples 20 point b1, b2 ... b20 in total, digitial controller is filtered 20 sampled points and seeks average
Value obtains acceleration value a1 and acceleration direction within 400ms this period, by acceleration value a1 and positive acceleration threshold value
The value of a2 is compared, if a1>A2 then judges that this moment acceleration is in reasonable value range, is otherwise in unreasonable range；
2) in t1~t2 stage, digitial controller detects the acceleration value at this moment in 18s at interval of 1s, judges acceleration value
It whether is 0, if the acceleration value detected in 18s is zero, the priming device that judgement is equipped with acceleration transducer is done at the uniform velocity
Linear motion；
3) in t2~t3 stage, digital controller senses acceleration transducer is transmitted through the data come, in duration 600ms,
Every 40ms takes an acceleration point, and taking 15 points in total is respectively c1, c2 ... c15, and digitial controller clicks through 15 samplings
Row filtering processing and averaged, obtain size and the acceleration direction of acceleration value a3 during this period of time, will accelerate
Angle value a3 is compared with a4, if a3<A4, and a3 is the acceleration of a negative sense, then judges that this moment acceleration is in reasonable
It is worth range；
The judgment method of stop phase is：
4) in t3~t4 stage, digitial controller detected in 1s 15 points judge acceleration value in t3~t4 time whether be
0, if 0, then t3~t4 stage priming device remains static；
Decline the judgement stage judgment method be：
5) in t4~t5 stage, digital controller senses acceleration transducer is transmitted through the data come, in duration 400ms,
Every 20ms takes an acceleration point, and obtaining 20 points in total is respectively d1, and d2 ... d20, digitial controller is to 20 sampled points
It is filtered simultaneously averaged, obtains size and the acceleration direction of acceleration value a4；By acceleration value a4 and a3 into
Row compares, if a4>A3, and a4 is a decline acceleration, then judges that this moment acceleration is in reasonable value range；
6) in t5~t6 stage, digital controller senses acceleration transducer is transmitted through the data come, and digitial controller is every in 18s
A point is taken every 1s, detects the acceleration value at this moment, judges whether acceleration value is 0, if the acceleration value of the detection in 18s
It is zero, then the priming device that judgement is equipped with acceleration transducer does linear uniform motion；
7) in t6~t7 stage, digital controller senses acceleration transducer is transmitted through the data come, in duration 600ms,
An acceleration point is taken every 40ms, taking 15 points in total is respectively e1, and e2 ... e15, digitial controller is to 15 sampled points
Be filtered and averaged, obtain a positive acceleration a2 during this period of time acceleration value size and
Acceleration value a2 is compared, if a2 by acceleration direction with a1<A1 then judges that this moment acceleration is in reasonable value range；
8) in t7~t8 stage, digitial controller detected in 1s 15 points judge acceleration value in t3~t4 time whether be
0, if 0, then t7~t8 stage priming device remains static, then judges that this moment acceleration is in reasonable value range；
9) when the judgement of three groups of acceleration pulse signal periods is in reasonable value range, it is complete that priming device starts Rule of judgment
At preparing to detonate, otherwise returns to 0 position and re-start detection；
The detection of acceleration pulse number includes the following steps：
10) when detect had been started up three groups of acceleration pulse signal periods after, stop after 1s in fixed detection time of detonating
In section t9~t17, when detecting 1 acceleration pulse signal period, i.e. first order initiator detonates；When detecting 2 acceleration
Pulse signal cycle is spent, i.e. second level initiator detonates；And so on realize multi-stage perforator detonation operation, wherein every level-one is penetrated
Hole initiator all presets detonation command code number, and corresponding series corresponds to its corresponding acceleration pulse detection number.
2. the oil/gas well multi-stage perforator initiation control method according to claim 1 based on accelerometer, which is characterized in that
When detect had been started up three groups of acceleration pulse signal periods after, stop after 1s fixed detonation detection time section t9~
In t17, if detect the acceleration pulse signal period pulse number and setting it is unequal, when clamped between at the end of the grade
Priming device does not export ignition order, is transferred to the starting judgement stage.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734364A (en) * | 2020-07-08 | 2020-10-02 | 通源石油科技集团股份有限公司 | TCP perforating method |
| CN111879433A (en) * | 2020-07-10 | 2020-11-03 | 九阳股份有限公司 | Temperature detection method for cooking equipment and cooking equipment |
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| CN108894758B (en) | 2020-10-27 |
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