CN104090296A - Seismic prospecting method and device - Google Patents
Seismic prospecting method and device Download PDFInfo
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- CN104090296A CN104090296A CN201410171977.XA CN201410171977A CN104090296A CN 104090296 A CN104090296 A CN 104090296A CN 201410171977 A CN201410171977 A CN 201410171977A CN 104090296 A CN104090296 A CN 104090296A
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Abstract
The invention provides a seismic prospecting method and device and relates to the field of geophysical prospecting and solves a problem that the prior Patch observation system work methods are in capable of meeting demands. The method includes the following steps: arranging shot points alternatively at shot interval parts between odd-number shot lines and even-number shot lines on a shot-line direction of a Patch observation system and/or arranging alternatively demodulator probes at interval parts between odd-number demodulator probe lines and even-number demodulator probe lines on a seisline direction of the Patch observation system; and according to the arranged shot points and demodulator probes, acquiring seismic data. The technical scheme is applicable of marine seismic exploration and realizes seismic data acquisition of higher precision.
Description
Technical field
The present invention relates to geophysical survey field, relate in particular to a kind of method of seismic prospecting and device.
Background technology
Offshore seismic exploration mainly comprises streamer seismic exploration and two kinds of acquisition modes of subsea cable seismic prospecting.Streamer seismic exploration is in data acquisition, and the big gun line of recording geometry is parallel with seisline, and shot point and geophone station uniformly-spaced move according to the shot interval of design, and the common midpoint that shot point and geophone station form also uniformly-spaced moves according to shot interval.Subsea cable seismic prospecting data collecting comprises parallel and two kinds of acquisition modes of quadrature recording geometry.Parallel observation system is similar with streamer seismic exploration, and big gun line is parallel with seisline, and the big gun line of quadrature recording geometry is vertical with seisline.Patch recording geometry is conventional recording geometry in current subsea cable seismic prospecting, belongs to quadrature recording geometry type.
Patch recording geometry is with the key distinction of streamer seismic exploration, and Patch recording geometry is in data acquisition, and geophone arrangement is fixed, and the position of common midpoint is along with half according to shot interval of the movement of shot point moves.Patch recording geometry is the intrinsic construction characteristic of subsea cable seismic prospecting with this some difference of streamer seismic exploration.
Along with the raising to the accuracy requirement of seismic prospecting, existing Patch recording geometry working method cannot satisfy the demands.
Summary of the invention
The invention provides a kind of method of seismic prospecting and device, solved the problem that existing Patch recording geometry working method cannot satisfy the demands.
A method of seismic prospecting, comprising:
By the shot point that is partly crisscross arranged of the shot interval between odd number big gun line in big gun line direction in Patch recording geometry and even number big gun line, and/or,
By the geophone station that is partly crisscross arranged of the check point spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline;
Shot point and geophone station according to arranging, carry out the collection of geological data.
Preferably, the shot interval of odd number big gun line in big gun line direction in Patch recording geometry and even number big gun line is partly crisscross arranged shot point is specially:
Shot interval between odd number big gun line in big gun line direction in Patch recording geometry and even number big gun line is interlocked to half.
Preferably, the spatial sampling interval of big gun line direction is become to 1/4th of shot interval.
Preferably, the check point spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline is partly crisscross arranged geophone station is specially:
Seisline spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline is interlocked to half.
Preferably, the spatial sampling interval of seisline direction is become to 1/4th of seisline spacing.
Preferably, the method also comprises:
Respectively big gun line and seisline are sequentially numbered.
The present invention also provides a kind of seismic prospecting device, comprising:
Spacing configuration module, for shot point that the shot interval between odd number big gun line and even number big gun line in Patch recording geometry big gun line direction is partly crisscross arranged, and/or,
By the geophone station that is partly crisscross arranged of the check point spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline;
Data acquisition module, for according to the shot point and the geophone station that arrange, carries out the collection of geological data.
Preferably, described spacing configuration module comprises:
Shot interval dispensing unit, for interlocking half by the shot interval between odd number big gun line and even number big gun line in Patch recording geometry big gun line direction.
Preferably, described spacing configuration module also comprises:
Seisline spacing dispensing unit, for interlocking half by the seisline spacing between odd number seisline and even number seisline in Patch recording geometry seisline direction.
Preferably, this device also comprises:
Numbering module, for being sequentially numbered big gun line and seisline respectively.
The invention provides a kind of method of seismic prospecting and device, by the shot point that is partly crisscross arranged of the shot interval between odd number big gun line in big gun line direction in Patch recording geometry and even number big gun line, and/or, by the geophone station that is partly crisscross arranged of the check point spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline, then according to the shot point and the geophone station that arrange, carry out the collection of geological data.Realize more high-precision earthquake data acquisition, solved the problem that existing Patch recording geometry working method cannot satisfy the demands.
Accompanying drawing explanation
Fig. 1 is under existing weaponry and equipment condition, shot point and geophone station distribution schematic diagram in the acquisition parameter of the attainable Patch recording geometry in subsea cable seismic prospecting field;
Fig. 2 is simple shot point distribution schematic diagram;
Fig. 3 is simple geophone station distribution schematic diagram;
Fig. 4 is shot point and the geophone station distribution schematic diagram of big gun line after staggered in embodiments of the invention one;
Fig. 5 is the shot point distribution schematic diagram after staggered;
Fig. 6 is the geophone station distribution schematic diagram after staggered;
Fig. 7 is shot point and the geophone station distribution schematic diagram of seisline after staggered in embodiments of the invention one;
Fig. 8 is the shot point distribution schematic diagram after staggered;
Fig. 9 is the geophone station distribution schematic diagram after staggered;
Figure 10 is big gun line and seisline shot point and the geophone station distribution schematic diagram after all staggered in embodiments of the invention one;
Figure 11 is the shot point distribution schematic diagram after staggered;
Figure 12 is the geophone station distribution schematic diagram after staggered;
The shot point distribution schematic diagram that Figure 13 is a kind of recording geometry of providing in embodiments of the invention one;
The geophone station distribution schematic diagram that Figure 14 is a kind of recording geometry of providing in embodiments of the invention one;
The overall distribution schematic diagram that Figure 15 is a kind of recording geometry of providing in embodiments of the invention one;
The local enlarged diagram that Figure 16 is a kind of recording geometry of providing in embodiments of the invention one;
The overall distribution schematic diagram that Figure 17 is another recording geometry of providing in embodiments of the invention one;
The local enlarged diagram that Figure 18 is another recording geometry of providing in embodiments of the invention one;
The overall distribution schematic diagram that Figure 19 is another recording geometry of providing in embodiments of the invention one;
The local enlarged diagram that Figure 20 is another recording geometry of providing in embodiments of the invention one;
The structural representation of a kind of seismic prospecting device that Figure 21 provides for embodiments of the invention two;
Figure 22 is the structural representation of spacing configuration module 2101 in Figure 21.
Embodiment
Along with the raising to the accuracy requirement of seismic prospecting, existing Patch recording geometry working method cannot satisfy the demands.
In order to address the above problem, embodiments of the invention provide a kind of method of seismic prospecting and device.Hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.It should be noted that, in the situation that not conflicting, the embodiment in the application and the feature in embodiment be combination in any mutually.
First by reference to the accompanying drawings, embodiments of the invention one are described.
The embodiment of the present invention provides a kind of method of seismic prospecting.Utilize this construction characteristic of subsea cable seismic prospecting to develop the staggered facet of Patch recording geometry unit acquisition technique, in existing seismic prospecting equipment situation, realized the earthquake data acquisition of subsea cable.
Subsea cable, when carrying out earthquake data acquisition, is subject to ocean operation environmental limit, and the many employings of the mode of blowing out are equidistantly blown out, and shot interval is a fixed value.When energy source boat work capacity restriction refers to air compressor on energy source boat to the air gun air feed of traction, if the distance of adjacent two big guns is too small, the air feed to air gun can not be completed, in actual job, as distance is less than 25m, the air feed to air cannon can not be completed.
Under existing weaponry and equipment condition, in the acquisition parameter of the attainable Patch recording geometry in subsea cable seismic prospecting field, shot point and geophone station distribute as shown in Figure 1, and as shown in Figure 2, simple geophone station distribution schematic diagram as shown in Figure 3 for simple shot point distribution schematic diagram.Shot interval is SI, and geophone station spacing is RI, and big gun distance between centers of tracks is SLI, and seisline spacing is RLI, and shot point number is SN, the detection RN that counts, and big gun line number is SLN, seisline number is RLN.The distance of seisline direction common midpoint is RI/2, and the distance of big gun line direction common midpoint is SI/2.
Patch recording geometry shot point interleaving technique, conventional Patch recording geometry is gathering under the certain condition of equipment, and the spatial sampling interval of big gun line direction determines by shot interval, and the spatial sampling interval of seisline direction is determined by geophone station spacing.The big gun line of identical operation Patch is numbered, half of the staggered shot interval of odd number big gun line and even number big gun line, SI/2 interlocks, shot point after staggered and geophone station distribution schematic diagram are as shown in Figure 4, as shown in Figure 5, the geophone station distribution schematic diagram after interlocking as shown in Figure 6 for shot point distribution schematic diagram after staggered.Do not changing under the condition that gathers equipment, the spatial sampling interval of big gun line direction becomes half that shot point does not interlock front, the distance that is big gun line direction common midpoint becomes SI/4, and Patch recording geometry shot point interleaving technique has improved density and the resolution of the earthquake data acquisition of big gun line direction.
Patch recording geometry geophone station interleaving technique, by half of the staggered phone spacing of the odd number seisline of identical operation Patch and even number seisline, RI/2 interlocks, shot point after staggered and geophone station distribution schematic diagram are as shown in Figure 7, as shown in Figure 8, the geophone station distribution schematic diagram after interlocking as shown in Figure 9 for shot point distribution schematic diagram after staggered.Do not changing under the condition that gathers equipment, the spatial sampling interval of seisline direction becomes half that geophone station does not interlock front, the distance that is seisline direction common midpoint becomes RI/4, and Patch recording geometry geophone station interleaving technique has improved density and the resolution of the earthquake data acquisition of seisline direction.
Pacth recording geometry shot point geophone station associating interleaving technique, by the odd number big gun line of identical operation Patch and the staggered SI/2 of even number big gun line, simultaneously by odd number seisline and the staggered RI/2 of even number seisline, shot point after staggered and geophone station distribution schematic diagram are as shown in figure 10, as shown in figure 11, the geophone station distribution schematic diagram after interlocking as shown in figure 12 for shot point distribution schematic diagram after staggered.Now the distance of big gun line direction common midpoint becomes SI/4, the distance of seisline direction common midpoint becomes RI/4, and Pacth recording geometry shot point geophone station associating interleaving technique has improved density and the resolution of the earthquake data acquisition of big gun line direction and seisline direction simultaneously.
Under identical collection equipment condition, by the shot point that is partly crisscross arranged of the shot interval between odd number big gun line in big gun line direction in Patch recording geometry and even number big gun line, and/or, by the geophone station that is partly crisscross arranged of the check point spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline, can reach and improve the density of earthquake data acquisition and the effect of resolution.
Below concrete design is illustrated:
Design one: the recording geometry that adopts the design of Patch recording geometry shot point interleaving technique, spatial sampling density increases, with reference to the geophone station distribution schematic diagram shown in the shot point distribution schematic diagram shown in Figure 13 and Figure 14, seisline direction common midpoint interval is consistent with the local enlarged diagram shown in the overall distribution schematic diagram shown in Figure 15 and Figure 16 respectively with conventional Patch recording geometry collection seisline direction common midpoint interval, big gun line direction common midpoint interval is reduced to SI/4, for conventional Patch recording geometry gathers half of big gun line direction common midpoint interval.
Design two: the recording geometry that adopts the design of Patch recording geometry geophone station interleaving technique, spatial sampling density increases, big gun line direction common midpoint interval (overall distribution schematic diagram as shown in Figure 17 and the local enlarged diagram shown in Figure 18) is consistent with conventional Patch recording geometry collection big gun line direction common midpoint interval (as accompanying drawing 15 and Figure 16), seisline direction common midpoint interval (as accompanying drawing 17 and accompanying drawing 18) is reduced to RI/4, for conventional Patch recording geometry gathers half of seisline direction common midpoint interval (as accompanying drawing accompanying drawing 15 and accompanying drawing 16).
Design three: adopt Pacth recording geometry shot point geophone station associating interleaving technique design view examining system, spatial sampling density increases, seisline direction and big gun line direction common midpoint interval (as shown in accompanying drawing 19 and accompanying drawing 20) are half of conventional Patch recording geometry seisline direction and big gun line direction common midpoint interval (as accompanying drawing 5), big gun line direction common midpoint interval (as shown in accompanying drawing 19 and accompanying drawing 20) is reduced to SI/4, and seisline direction common midpoint interval (as shown in accompanying drawing 19 and accompanying drawing 20) is reduced to RI/4.
According to above-mentioned arbitrary design proposal, arranging after shot point and/or detection line, can, according to the shot point and the geophone station that arrange, carry out the collection of geological data.
Below in conjunction with accompanying drawing, embodiments of the invention two are described.
The embodiment of the present invention provides a kind of seismic prospecting device, and its structure as shown in figure 21, comprising:
Spacing configuration module 2101, for shot point that the shot interval between odd number big gun line and even number big gun line in Patch recording geometry big gun line direction is partly crisscross arranged, and/or,
By the geophone station that is partly crisscross arranged of the check point spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline;
Data acquisition module 2102, for according to the shot point and the geophone station that arrange, carries out the collection of geological data.
Preferably, the structure of described spacing configuration module 2101 as shown in figure 22, comprising:
Shot interval dispensing unit 2201, for interlocking half by the shot interval between odd number big gun line and even number big gun line in Patch recording geometry big gun line direction.
Preferably, described spacing configuration module 2101 also comprises:
Seisline spacing dispensing unit 2202, for interlocking half by the seisline spacing between odd number seisline and even number seisline in Patch recording geometry seisline direction.
Preferably, this device also comprises:
Numbering module 2103, for being sequentially numbered big gun line and seisline respectively.
Embodiments of the invention provide a kind of method of seismic prospecting and device, by the shot point that is partly crisscross arranged of the shot interval between odd number big gun line in big gun line direction in Patch recording geometry and even number big gun line, and/or, by the geophone station that is partly crisscross arranged of the check point spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline, then according to the shot point and the geophone station that arrange, carry out the collection of geological data.Realize more high-precision earthquake data acquisition, solved the problem that existing Patch recording geometry working method cannot satisfy the demands.
The all or part of step that one of ordinary skill in the art will appreciate that above-described embodiment can realize by computer program flow process, described computer program can be stored in a computer-readable recording medium, described computer program (as system, unit, device etc.) on corresponding hardware platform is carried out, when carrying out, comprise step of embodiment of the method one or a combination set of.
Alternatively, all or part of step of above-described embodiment also can realize with integrated circuit, and these steps can be made into respectively integrated circuit modules one by one, or a plurality of modules in them or step are made into single integrated circuit module realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Each device/functional module/functional unit in above-described embodiment can adopt general calculation element to realize, and they can concentrate on single calculation element, also can be distributed on the network that a plurality of calculation elements form.
The form of software function module of usining each device/functional module/functional unit in above-described embodiment realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium.The above-mentioned computer read/write memory medium of mentioning can be ROM (read-only memory), disk or CD etc.
Anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain described in claim.
Claims (10)
1. a method of seismic prospecting, is characterized in that, comprising:
By the shot point that is partly crisscross arranged of the shot interval between odd number big gun line in big gun line direction in Patch recording geometry and even number big gun line, and/or,
By the geophone station that is partly crisscross arranged of the check point spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline;
Shot point and geophone station according to arranging, carry out the collection of geological data.
2. method of seismic prospecting according to claim 1, is characterized in that, the shot interval of odd number big gun line in big gun line direction in Patch recording geometry and the even number big gun line shot point that is partly crisscross arranged is specially:
Shot interval between odd number big gun line in big gun line direction in Patch recording geometry and even number big gun line is interlocked to half.
3. method of seismic prospecting according to claim 2, is characterized in that, the spatial sampling interval of big gun line direction is become to 1/4th of shot interval.
4. method of seismic prospecting according to claim 1, is characterized in that, the geophone station that is partly crisscross arranged of the check point spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline is specially:
Seisline spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline is interlocked to half.
5. method of seismic prospecting according to claim 4, is characterized in that, the spatial sampling interval of seisline direction is become to 1/4th of seisline spacing.
6. method of seismic prospecting according to claim 1, is characterized in that, the method also comprises:
Respectively big gun line and seisline are sequentially numbered.
7. a seismic prospecting device, is characterized in that, comprising:
Spacing configuration module, for shot point that the shot interval between odd number big gun line and even number big gun line in Patch recording geometry big gun line direction is partly crisscross arranged, and/or,
By the geophone station that is partly crisscross arranged of the check point spacing between odd number seisline in seisline direction in Patch recording geometry and even number seisline;
Data acquisition module, for according to the shot point and the geophone station that arrange, carries out the collection of geological data.
8. seismic prospecting device according to claim 7, is characterized in that, described spacing configuration module comprises:
Shot interval dispensing unit, for interlocking half by the shot interval between odd number big gun line and even number big gun line in Patch recording geometry big gun line direction.
9. seismic prospecting device according to claim 8, is characterized in that, described spacing configuration module also comprises:
Seisline spacing dispensing unit, for interlocking half by the seisline spacing between odd number seisline and even number seisline in Patch recording geometry seisline direction.
10. seismic prospecting device according to claim 8 or claim 9, is characterized in that, this device also comprises:
Numbering module, for being sequentially numbered big gun line and seisline respectively.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880732A (en) * | 2015-06-04 | 2015-09-02 | 中国石油天然气集团公司 | Method and device for constructing cross subset |
| CN104932005A (en) * | 2015-06-19 | 2015-09-23 | 中石化石油工程技术服务有限公司 | Three-dimensional observation system arranging method and corresponding three-dimensional observation system |
| CN106019365A (en) * | 2016-06-08 | 2016-10-12 | 中国煤炭地质总局地球物理勘探研究院 | Acquisition footprint weakening shotpoint transferring three dimensional seismic survey system and survey method therefor |
| CN106249275A (en) * | 2015-06-04 | 2016-12-21 | 中国石油化工股份有限公司 | Earthquake-capturing automatic routing system and method |
| CN110174697A (en) * | 2019-05-31 | 2019-08-27 | 中国煤炭地质总局物测队 | A kind of the change sight simulation system and its analogy method of 3-d seismic exploration |
| CN111025380A (en) * | 2018-10-09 | 2020-04-17 | 河南理工大学 | Mine micro-seismic observation system design and surface wave extraction method |
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2014
- 2014-04-25 CN CN201410171977.XA patent/CN104090296A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880732A (en) * | 2015-06-04 | 2015-09-02 | 中国石油天然气集团公司 | Method and device for constructing cross subset |
| CN106249275A (en) * | 2015-06-04 | 2016-12-21 | 中国石油化工股份有限公司 | Earthquake-capturing automatic routing system and method |
| CN106249275B (en) * | 2015-06-04 | 2018-08-31 | 中国石油化工股份有限公司 | Earthquake-capturing automatic routing system and method |
| CN104932005A (en) * | 2015-06-19 | 2015-09-23 | 中石化石油工程技术服务有限公司 | Three-dimensional observation system arranging method and corresponding three-dimensional observation system |
| CN106019365A (en) * | 2016-06-08 | 2016-10-12 | 中国煤炭地质总局地球物理勘探研究院 | Acquisition footprint weakening shotpoint transferring three dimensional seismic survey system and survey method therefor |
| CN111025380A (en) * | 2018-10-09 | 2020-04-17 | 河南理工大学 | Mine micro-seismic observation system design and surface wave extraction method |
| CN110174697A (en) * | 2019-05-31 | 2019-08-27 | 中国煤炭地质总局物测队 | A kind of the change sight simulation system and its analogy method of 3-d seismic exploration |
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