CN108107468A - A kind of ocean spark source multifrequency mixing is three-dimensional to excite simulator and method - Google Patents
A kind of ocean spark source multifrequency mixing is three-dimensional to excite simulator and method Download PDFInfo
- Publication number
- CN108107468A CN108107468A CN201711309553.5A CN201711309553A CN108107468A CN 108107468 A CN108107468 A CN 108107468A CN 201711309553 A CN201711309553 A CN 201711309553A CN 108107468 A CN108107468 A CN 108107468A
- Authority
- CN
- China
- Prior art keywords
- energy
- case
- spark
- electrode
- excitation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/157—Generating seismic energy using spark discharges; using exploding wires
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/10—Aspects of acoustic signal generation or detection
- G01V2210/12—Signal generation
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of ocean spark source multifrequencies to mix three-dimensional excitation simulator and method, the device includes PC and controls host, the PC controls host is connected to energy low frequency spark source case, energy high-frequency spark focus case and differential GPS by coaxial cable, and the energy low frequency spark source case is connected with the first aquatic bird and first electrode in turn by direct current cables；The energy high-frequency spark focus case is connected with the second aquatic bird and second electrode in turn by direct current cables；First aquatic bird and the second aquatic bird control host to be connected by communication cable with aquatic bird.The spark source of two kinds of frequency characteristics of the invention excites simultaneously can obtain the seismic signal that frequency content is enriched, and realize the shallow middle high-resolution seismic survey taken into account deeply below seabed and seabed.
Description
Technical field
The invention belongs to technical field of geophysical exploration, specifically, are related to a kind of ocean spark source multifrequency mixing
Solid excitation simulator and method.
Background technology
Marine seismic prospectiong epicenter excitation Design of Signal is one of committed step of marine seismic prospectiong.Epicenter excitation energy
The depth and resolution ratio that can detect objective body of seismic prospecting are directly determined with frequency：Big energy spark source energy may be up to
30000 is burnt, and excitation signal low frequency enriches, and is chiefly used in middle deep purpose Layer Detection；Small energy spark source energy can be down to tens
Coke, excitation signal high frequency enrich, and are chiefly used in shallow purpose Layer Detection.Spark source seismic prospecting generally use is single both at home and abroad at present
Type focus, energy, frequency content are fixed, and exploration targets is inevitably attended to one thing and lose sight of another, and can not accomplish that shallow middle deep target zone is taken into account.Cause
This, it is necessary to the seismic signal that the spark source of multi-frequency characteristic excites acquisition frequency content to enrich simultaneously is rationally designed, from
And exploration blind area is avoided, realize the shallow middle high-resolution seismic survey taken into account deeply below seabed and seabed.
More focus mixed activation technologies change the mode of the single focus continuous agitation of tradition, are swashed simultaneously using multiple focus
Hair, reduces epicenter excitation interval, must shorten the construction time so as to very big, save exploration cost.Its key technology is that design is closed
The focus coding of reason records can mixing focus earthquake record to be separated into single focus during seismic data process.
At present, land controlled source mixing source excitation uses phase code, and marine air gun mixing source is encoded using random time delay, and
The focus coding mode of marine spark source, situation about particularly constructing simultaneously to different-energy spark source are ground without correlation
Study carefully and method.
Ghosting is one of main interference of marine seismic prospectiong data, and trap effect seriously affects the frequency of seismic data
Wide and resolution ratio.At present, the technology in collection terminal compacting ghosting mainly includes upper and lower cable acquisition technique, tilts cable acquisition technique
Deng, these technologies can effectively suppress the ghosting of geophone station end, but in collection terminal not to focus end ghosting progress
The correlation technique effectively suppressed.
The content of the invention
In view of this, the present invention is directed to the problem of above-mentioned, provides a kind of three-dimensional excitation of ocean spark source multifrequency mixing
Simulator and method.
In order to solve the above-mentioned technical problem, the invention discloses a kind of ocean spark source multifrequencies to mix three-dimensional excitation simulation
Device controls host including PC, PC control host by coaxial cable be connected to energy low frequency spark source case,
Energy high-frequency spark focus case and differential GPS, the energy low frequency spark source case are connected in turn by direct current cables
First aquatic bird and first electrode；The energy high-frequency spark focus case is connected with the second aquatic bird and in turn by direct current cables
Two electrodes；First aquatic bird and the second aquatic bird control host to be connected by communication cable with aquatic bird.
Further, the energy of the energy low frequency spark source case excitation swashs more than energy high-frequency spark focus case
The energy of hair.
The invention also discloses a kind of ocean spark source multifrequencies to mix three-dimensional exciting method, comprises the following steps：
Step 1：The three-dimensional excitation simulator of ocean spark source multifrequency mixing is assembled, spark source multifrequency mixing in ocean is vertical
Body excitation simulator includes PC and controls host, and the PC controls host is connected to energy low frequency electrical fire by coaxial cable
Flower focus case, energy high-frequency spark focus case and differential GPS, the energy low frequency spark source case by direct current cables according to
It is secondary to be connected with the first aquatic bird and first electrode；The energy high-frequency spark focus case is connected with second in turn by direct current cables
Aquatic bird and second electrode；First aquatic bird and the second aquatic bird control host to be connected by communication cable with aquatic bird；
Step 2：After equipment in step 1 connects, two sets of focus electrode first electrodes and second electrode are put into water
Middle towing, and adjust its relative space position in water；First electrode and second is controlled by the first aquatic bird and the second aquatic bird
Electrode sinking depth, first electrode is in preceding, a meters of sinking depth；Second electrode is more than b in rear, b meters of sinking depth, a；Electrode water
Flat spacing c be reception channel away from multiple, so as to form three-dimensional excitation；
Step 3：Excitation energy is set, and the energy of energy low frequency spark source case excitation shakes more than energy high-frequency spark
The energy of source case；
Step 4：Two seismic source energy low-frequency electricals are realized in a manner that PC controls host using random delay coding excitation
Spark seismic source case and energy high-frequency spark focus case mixed activation；It is first for each shot point energy low frequency spark source case
It first excites, energy high-frequency spark focus case delay excitation, delay interval changed at random in 0-0.5 seconds；Each shot point swashs
Hair delay is generated and recorded by PC control hosts.
Compared with prior art, the present invention can be obtained including following technique effect：
1) spark source of two kinds of frequency characteristics excites simultaneously can obtain the seismic signal that frequency content is enriched, and realize
The shallow middle high-resolution seismic survey taken into account deeply below seabed and seabed.
2) more focus mixed activation technologies are excited simultaneously using two focus, reduce epicenter excitation interval, so as to greatly
The construction time must be shortened, save exploration cost.
3) the three-dimensional excitation of focus is conducive to the compacting of focus end ghosting, protects useful signal.
Certainly, implement any of the products of the present invention it is not absolutely required to while reach all the above technique effect.
Description of the drawings
Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the present invention, this hair
Bright schematic description and description does not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structure diagram of the three-dimensional excitation simulator of ocean spark source multifrequency mixing of the present invention；
Fig. 2 is electrode space position view of the present invention；
Fig. 3 is two source ghost filtering characteristic schematic diagrames of the invention；
Fig. 4 is energy high-frequency spark focus case excitation delay design result of the present invention.
In figure, 1.PC control hosts, 2. energy low frequency spark source casees, 3. energy high-frequency spark focus casees, 4. the
One electrode, 5. second electrodes, 6. aquatic birds control host, 7. first aquatic birds, 8. differential GPSs, 9. seas, 10. second aquatic birds.
Specific embodiment
Carry out the embodiment that the present invention will be described in detail below in conjunction with embodiment, thereby to the present invention how application technology hand
Section can fully understand and implement according to this to solve technical problem and reach the realization process of technical effect.
The invention discloses a kind of ocean spark source multifrequencies to mix three-dimensional excitation simulator, as shown in Figure 1, including PC
Host 1 is controlled, the PC controls host 1 is connected to energy low frequency spark source case 2, energy high frequency by coaxial cable
Spark source case 3 and differential GPS 8, the energy low frequency spark source case 2 are connected with the first water in turn by direct current cables
Bird 7 and first electrode 4；The energy high-frequency spark focus case 3 is connected with the second aquatic bird 9 and second in turn by direct current cables
Electrode 5；First aquatic bird, 7 and second aquatic bird 10 controls host 6 to be connected by communication cable with aquatic bird.
Energy low frequency spark source case 2, energy high-frequency spark focus case 3 are using the electric spark shake of SIG companies of France
Source, the energy that energy low frequency spark source case 2 excites are more than energy high-frequency spark focus case 3.Its main feature is that PC control masters
Machine controls two epicenter excitation moment.Aquatic bird is placed in focus electrode front end, by aquatic bird controller aquatic bird is controlled to adjust electrode and sunk
Put depth.
The invention also discloses a kind of ocean spark source multifrequencies to mix three-dimensional excitation analogy method, comprises the following steps：
Step 1：The three-dimensional excitation simulator of ocean spark source multifrequency mixing is assembled, spark source multifrequency mixing in ocean is vertical
Body excitation simulator includes PC and controls host 1, and the PC controls host 1 is connected to energy low-frequency electrical by coaxial cable
Spark seismic source case 2, energy high-frequency spark focus case 3 and differential GPS 8, differential GPS position for electrode 4,5, and the energy is low
Frequency spark source case 2 is connected with the first aquatic bird 7 and first electrode 4 in turn by direct current cables；The energy high-frequency spark
Focus case 3 is connected with the second aquatic bird 9 and second electrode 5 in turn by direct current cables；First aquatic bird, 7 and second aquatic bird 10 is logical
Communication cable is crossed with aquatic bird control host 6 to be connected；
Step 2：As shown in Fig. 2, after the equipment in step 1 connects, by two sets of focus electrode first electrodes 4 and second
Electrode 5 pulls into the water, and adjusts its relative space position in water.Its main feature is that pass through the first aquatic bird 7 and the second water
Bird 10 controls 5 sinking depth of first electrode 4 and second electrode, and for first electrode 4 preceding, sinking depth a is 20.5m；Second electrode 5
Rear, sinking depth b is 6m；Electrode level interval c be reception channel away from multiple, so as to form three-dimensional excitation.Three-dimensional excitation side
Formula can protect the low-frequency component 10Hz-100Hz and energy high-frequency spark focus of 2 signal of energy low frequency spark source case
The radio-frequency component 200Hz-500Hz of 3 signal of case, if Fig. 3 solid lines are big energy source ghost filtering characteristics, dotted line is small energy
Source ghost filtering characteristic, the two combine the influence that can effectively suppress source ghost trap effect.
Step 3：Set excitation energy, 2 excitation energy of energy low frequency spark source case be 6000J, energy high frequency electrical fire
3 energy of flower focus case is 2000J.Its main feature is that 2 model SIG6 of energy low frequency spark source case, signal low frequency enrich；Energy
3 model SIG2 of high-frequency spark focus case is measured, signal high frequency enriches, and realizes the purpose of multifrequency excitation.
Step 4：Two seismic source energy low-frequency electricals are realized in a manner that PC controls host 1 using random delay coding excitation
3 mixed activation of spark seismic source case 2 and energy high-frequency spark focus case；Its main feature is that for each shot point energy low frequency electrical fire
Flower focus case 2 excites first, and the delay excitation of energy high-frequency spark focus case 3, delay interval changed at random in 0-0.5 seconds.
The excitation delay of each shot point is generated and recorded by PC control hosts.
Such as Fig. 4, black circles denote the excitation delay of the energy high-frequency spark focus case 3 corresponding to big gun 1-50,
Unit is millisecond.Excitation delay randomly generates, and is conducive to separation and the post-processing of more focus seismic signals；Time delay exists
Due to hull movement the position error of electrode 5 can will be brought to be reduced within 2 meters in 0.5 second.
Several preferred embodiments of invention have shown and described in above description, but as previously described, it should be understood that invention is not
Form disclosed herein is confined to, is not to be taken as the exclusion to other embodiment, and available for various other combinations, modification
And environment, and can be carried out in the scope of the invention is set forth herein by the technology or knowledge of above-mentioned introduction or association area
Change.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of invention, then it all should be in power appended by invention
In the protection domain of profit requirement.
Claims (3)
1. a kind of three-dimensional excitation simulator of ocean spark source multifrequency mixing, which is characterized in that host (1) is controlled including PC,
The PC control hosts (1) are connected to energy low frequency spark source case (2), energy high-frequency spark by coaxial cable
Focus case (3) and differential GPS (8), the energy low frequency spark source case (2) are connected with the first water in turn by direct current cables
Bird (7) and first electrode (4)；The energy high-frequency spark focus case (3) is connected with the second aquatic bird in turn by direct current cables
(9) and second electrode (5)；First aquatic bird (7) and the second aquatic bird (10) control host (6) phase by communication cable and aquatic bird
Connection.
2. the three-dimensional excitation simulator of ocean spark source multifrequency mixing according to claim 1, which is characterized in that described
The energy of energy low frequency spark source case (2) excitation is more than the energy of energy high-frequency spark focus case (3) excitation.
3. a kind of three-dimensional exciting method of ocean spark source multifrequency mixing, which is characterized in that comprise the following steps：
Step 1：The three-dimensional excitation simulator of ocean spark source multifrequency mixing is assembled, spark source multifrequency mixing in ocean is three-dimensional to swash
Sending out simulator includes PC control hosts (1), and the PC control hosts (1) are connected to energy low-frequency electrical by coaxial cable
Spark seismic source case (2), energy high-frequency spark focus case (3) and differential GPS (8), the energy low frequency spark source case (2)
First aquatic bird (7) and first electrode (4) are connected in turn by direct current cables；The energy high-frequency spark focus case (3) is logical
It crosses direct current cables and is connected with the second aquatic bird (9) and second electrode (5) in turn；First aquatic bird (7) and the second aquatic bird (10) are logical
Communication cable is crossed with aquatic bird control host (6) to be connected；
Step 2：After equipment in step 1 connects, two sets of focus electrode first electrodes (4) and second electrode (5) are put into
It is pulled in water, and adjusts its relative space position in water；Pass through the first electricity of the first aquatic bird (7) and the second aquatic bird (10) control
Pole (4) and second electrode (5) sinking depth, first electrode (4) is in preceding, a meters of sinking depth；Second electrode (5) is in rear, sinking depth
B meters of degree, a are more than b；Electrode level interval c be reception channel away from multiple, so as to form three-dimensional excitation；
Step 3：Excitation energy is set, and the energy of energy low frequency spark source case (2) excitation shakes more than energy high-frequency spark
The energy of source case (3)；
Step 4：Two seismic source energy low frequency electrical fires are realized in a manner that PC controls host (1) using random delay coding excitation
Flower focus case (2) and energy high-frequency spark focus case (3) mixed activation；For each shot point energy low frequency spark source
Case (2) excites first, and energy high-frequency spark focus case (3) delay excitation, delay interval changed at random in 0-0.5 seconds；Respectively
The excitation delay of a shot point is generated and recorded by PC control hosts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711309553.5A CN108107468A (en) | 2017-12-11 | 2017-12-11 | A kind of ocean spark source multifrequency mixing is three-dimensional to excite simulator and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711309553.5A CN108107468A (en) | 2017-12-11 | 2017-12-11 | A kind of ocean spark source multifrequency mixing is three-dimensional to excite simulator and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108107468A true CN108107468A (en) | 2018-06-01 |
Family
ID=62208205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711309553.5A Pending CN108107468A (en) | 2017-12-11 | 2017-12-11 | A kind of ocean spark source multifrequency mixing is three-dimensional to excite simulator and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108107468A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180432A (en) * | 2020-09-01 | 2021-01-05 | 中国科学院深圳先进技术研究院 | High-efficiency electric spark seismic source system based on corona discharge and setting method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5995452A (en) * | 1996-07-29 | 1999-11-30 | Hydroacoustics, Inc. | System for generating and transmitting acoustic signals underwater |
| CN1632615A (en) * | 2004-12-09 | 2005-06-29 | 国家海洋局第一海洋研究所 | Intelligent control composite coherent electric sparks |
| CN106291709A (en) * | 2016-07-20 | 2017-01-04 | 中国海洋石油总公司 | A kind of marine streamer wideband wide-azimuth method of seismic prospecting |
| CN106990431A (en) * | 2017-05-18 | 2017-07-28 | 国家海洋局第海洋研究所 | A kind of near Sea Bottom hydrate detection system |
-
2017
- 2017-12-11 CN CN201711309553.5A patent/CN108107468A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5995452A (en) * | 1996-07-29 | 1999-11-30 | Hydroacoustics, Inc. | System for generating and transmitting acoustic signals underwater |
| CN1632615A (en) * | 2004-12-09 | 2005-06-29 | 国家海洋局第一海洋研究所 | Intelligent control composite coherent electric sparks |
| CN106291709A (en) * | 2016-07-20 | 2017-01-04 | 中国海洋石油总公司 | A kind of marine streamer wideband wide-azimuth method of seismic prospecting |
| CN106990431A (en) * | 2017-05-18 | 2017-07-28 | 国家海洋局第海洋研究所 | A kind of near Sea Bottom hydrate detection system |
Non-Patent Citations (2)
| Title |
|---|
| 中国石油和石化工程研究会: "《当代石油和石化工业技术普及读本 勘探》", 31 October 2000 * |
| 金翔龙: "海洋地球物理研究与海底探测声学技术的发展", 《地球物理学进展》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180432A (en) * | 2020-09-01 | 2021-01-05 | 中国科学院深圳先进技术研究院 | High-efficiency electric spark seismic source system based on corona discharge and setting method |
| CN112180432B (en) * | 2020-09-01 | 2023-10-20 | 中国科学院深圳先进技术研究院 | High-efficiency electric spark source system based on corona discharge and setting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106291709B (en) | A kind of marine streamer wideband wide-azimuth method of seismic prospecting | |
| US9547097B2 (en) | Marine vibrator sweeps | |
| EP2038682B1 (en) | Method for electromagnetic geophysical surveying of subsea rock formations | |
| CN106990431A (en) | A kind of near Sea Bottom hydrate detection system | |
| RU2008136183A (en) | ELECTROMAGNETIC EXPLORATION | |
| CN109143390A (en) | A kind of shallow transient electromagnetic fine granularing scalability method based on geometrical factor | |
| Mattsson et al. | Towed streamer EM: the challenges of sensitivity and anisotropy | |
| WO1986002739A1 (en) | Electroacoustic pulse source for high resolution seismic prospectings | |
| CN109343132A (en) | Transient electromagnetic detecting method and device in underground coal mine big loop line three-component hole | |
| CN103630941A (en) | Long-linear-source transient electromagnetic system and method with pseudo-random code emission and array reception | |
| US20120194196A1 (en) | Electromagnetic Source to Produce Multiple Electromagnetic Components | |
| CN108107468A (en) | A kind of ocean spark source multifrequency mixing is three-dimensional to excite simulator and method | |
| CN105891895B (en) | A kind of system and method determining sky wave propagation characteristic | |
| CN204389704U (en) | A kind of marine seismic acquisition system | |
| WO2021098667A1 (en) | Full-coverage anti-interference controlled-source electromagnetic detection method | |
| Engelmark et al. | Towed streamer EM comes of age | |
| CN102830424B (en) | A kind of receiver pattern calculation method of parameters | |
| CN111929741A (en) | 5G + CMFT-R time domain electromagnetic field exploration system and method | |
| CN1065338C (en) | Detection system for sweepage channel in earth dam and geologic hidden peril in reservoir dam | |
| CN210720761U (en) | A induced polarization appearance for deep resource exploration | |
| CN103344986A (en) | Marine air gun three-dimensional sub-array delay exciting method | |
| CN206788387U (en) | A kind of wide investigative range and multichannel, the transient electromagnetic reception device of synchronous acquisition | |
| Wright et al. | A VETEM survey of a former munitions foundry site at the Denver Federal Center | |
| Rudd et al. | The Utility of a Fully-distributed Direct Current Resistivity and Induced Polarisation System with Common Voltage Referencing | |
| CN107003426A (en) | The method and apparatus for carrying out electromagnetic surveying for the source waveform using dynamic select |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180601 |