CN106019365A - Acquisition footprint weakening shotpoint transferring three dimensional seismic survey system and survey method therefor - Google Patents
Acquisition footprint weakening shotpoint transferring three dimensional seismic survey system and survey method therefor Download PDFInfo
- Publication number
- CN106019365A CN106019365A CN201610401104.2A CN201610401104A CN106019365A CN 106019365 A CN106019365 A CN 106019365A CN 201610401104 A CN201610401104 A CN 201610401104A CN 106019365 A CN106019365 A CN 106019365A
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- seisline
- big gun
- gun line
- line
- shot point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
-
- 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
- G01V2210/14—Signal detection
- G01V2210/144—Signal detection with functionally associated receivers, e.g. hydrophone and geophone pairs
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses an acquisition footprint weakening shotpoint transferring three dimensional seismic survey system and a survey method therefor. The three dimensional seismic survey system and the survey method therefor can help solve a problem that heavy acquisition footprints can be easily generated in coal due to shotpoint transferring in three dimensional seismic survey processes and consequently survey precision is affected. The three dimensional seismic survey system comprises a first wave detection line (1), a second wave detection line (2), a first shot line (3), a third shot line (5) and a fourth shot line (6), wherein a structure (8) is arranged between the first wave detection line (1) and the second wave detection line (2), the structure (8) is placed on a preset second shot line (4), a shotpoint transferring shot line (9) is placed at a right side of the structure (8), the shotpoint transferring shot line (9) and the third shot line (5) are arranged in a parallel manner, and the shotpoint transferring shot line (9) is provided with shot points (7). Via use of the acquisition footprint weakening shotpoint transferring three dimensional seismic survey system and the survey method therefor, acquisition footprints are weakened, and survey precision is improved.
Description
Technical field
The present invention relates to a kind of coal three-dimensional seismic survey system, move, particularly to a kind of shot point that gathers, the coal three-dimensional seismic survey system become when seeing.
Background technology
In coal 3-d seismic exploration is constructed, it is usually and lays observation system according to investigation depth, geological tasks and detection accuracy.Observation system realizes generally by wire harness grid, lays geophone station and shot point, to realize 3-d seismic exploration on wire harness grid.At the scene during actual laying, run into ground structures sometimes and conflict mutually with the shot point of laying, make this shot point cannot lay use.When running into this kind of situation, position generally by mobile conflict shot point, i.e. move change sight by shot point and realize observation, owing to the movement of this shot point is that the position according to on-the-spot structures determines, becomes and see irregularly, be susceptible to distance between centers of tracks more than shooting distance and the situation of geophone interval, produce blown-out shot district, the bin attributes causing observation system is uneven, produces acquisition footprint, has badly influenced detection accuracy.
Summary of the invention
The invention provides a kind of change weakening acquisition footprint and see three-dimensional seismic survey system and investigation method thereof, solve owing to becoming the sight acquisition footprint that easily generation is serious in coal 3-d seismic exploration, and then have influence on the technical problem of detection accuracy.
The present invention is to solve above technical problem by the following technical programs:
A kind of shot point weakening acquisition footprint moves change and sees three-dimensional seismic survey system, including the first seisline, the second seisline, first bombard line the 3rd big gun line and the 4th big gun line, it is provided with structures between the first seisline and the second seisline, structures are provided on the second big gun line set in advance, it is provided with change on the right side of structures and sees big gun line, become sight big gun line and the 3rd big gun line be arranged in parallel, be provided with shot point becoming to see on big gun line.
Shooting distance is DX, and the spacing of the first seisline and the second seisline is DY, is disposed with DY/DX shot point between the first seisline and the second seisline.
A kind of shot point weakening acquisition footprint moves change and sees three-dimensional seismic survey method, comprises the following steps:
The first step, lay observation system according to investigation depth, geological tasks and detection accuracy, and make structures between the first seisline and the second seisline, and structures are arranged on the second big gun line set in advance, the spacing between the first seisline and the second seisline in the observation system laid is DY, and the shooting distance in the observation system laid is DX；
Second step, by left for the second big gun alignment in observation system (or to the right) translation so that it is leave structures, formed to become and see big gun line,
3rd step, arranges shot point becoming to see on big gun line, and the change between the first seisline and the second seisline is seen and arranged DY/DX shot point on big gun line.
When the structures arranged between the first seisline and the second seisline make seismic survey there is bigger blown-out shot district, synchronize to move down or synchronize to move up by becoming each shot point seen on big gun line.
The present invention has considered the uniformity of the effective degree of covering of earthquake and shot interval, the method seeing the translation of big gun line is become owing to taking, farthest alleviate the bin attributes caused due to irregular change sight uneven, and then alleviate the degree of acquisition footprint, improve detection accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention,
Fig. 2 is that each shot point seen on big gun line 9 that becomes of the present invention synchronizes the structural representation after moving down.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings:
A kind of shot point weakening acquisition footprint moves change and sees three-dimensional seismic survey system, including first seisline the 1, second seisline 2, first bombard line 3 the 3rd big gun line 5 and the 4th big gun line 6, it is provided with structures 8 between the first seisline 1 and the second seisline 2, structures 8 are provided on the second big gun line 4 set in advance, it is provided with change on the right side of structures 8 and sees big gun line 9, become sight big gun line 9 to be arranged in parallel with the 3rd big gun line 5, be provided with shot point 7 becoming to see on big gun line 9.
Shooting distance is DX, and the spacing of the first seisline 1 and the second seisline 2 is DY, is disposed with DY/DX shot point between the first seisline 1 and the second seisline 2.
A kind of shot point weakening acquisition footprint moves change and sees three-dimensional seismic survey method, comprises the following steps:
The first step, lay observation system according to investigation depth, geological tasks and detection accuracy, and make structures 8 between the first seisline 1 and the second seisline 2, and structures 8 are arranged on the second big gun line 4 set in advance, the spacing between the first seisline 1 and the second seisline 2 in the observation system laid is DY, and the shooting distance in the observation system laid is DX；
Second step, by the second big gun line 4 in observation system (or to the right) to the left translation so that it is leave structures 8, formed to become and see big gun line 9,
3rd step, arranges shot point 7 becoming to see on big gun line 9, and the change between the first seisline 1 and the second seisline 2 is seen and arranged DY/DX shot point on big gun line 9.
When at the first seisline 1 and the, when the structures 8 arranged make seismic survey there is bigger blown-out shot district, synchronizing to move down or synchronize to move up by becoming each shot point seen on big gun line 9 between two seislines 2.
It is to be become by rule to see that shot point in technique scheme becomes sight, thus greatly reduces the area in blown-out shot district, reduces the degree of acquisition footprint, improves detection quality.
Claims (4)
1. the shot point weakening acquisition footprint moves change and sees three-dimensional seismic survey system, including the first seisline (1), second seisline (2), first bombard line (3) the 3rd big gun line (5) and the 4th big gun line (6), structures (8) it are provided with between the first seisline (1) and the second seisline (2), structures (8) are provided on the second big gun line (4) set in advance, it is characterized in that, it is provided with change on the right side of structures (8) and sees big gun line (9), become sight big gun line (9) to be arranged in parallel with the 3rd big gun line (5), it is provided with shot point (7) on big gun line (9) becoming to see.
A kind of shot point weakening acquisition footprint the most according to claim 1 moves change and sees three-dimensional seismic survey system, it is characterized in that, shooting distance is DX, first seisline (1) is DY with the spacing of the second seisline (2), is disposed with DY/DX shot point between the first seisline (1) and the second seisline (2).
3. the shot point weakening acquisition footprint moves a change sight three-dimensional seismic survey method, comprises the following steps:
The first step, lay observation system according to investigation depth, geological tasks and detection accuracy, and make structures (8) be positioned between the first seisline (1) and the second seisline (2), and structures (8) are arranged on the second big gun line (4) set in advance, the spacing between the first seisline (1) and the second seisline (2) in the observation system laid is DY, and the shooting distance in the observation system laid is DX；
Second step, by the second big gun line (4) in observation system (or to the right) to the left translation so that it is leave structures (8), formed to become and see big gun line (9),
3rd step, arranges shot point (7) becoming to see on big gun line (9), and big gun line (9) DY/DX shot point of upper layout is seen in the change between the first seisline (1) and the second seisline (2).
A kind of shot point weakening acquisition footprint the most according to claim 3 moves change and sees three-dimensional seismic survey method, it is characterized in that, when the structures (8) arranged between the first seisline (1) and the second seisline (2) make seismic survey there is bigger blown-out shot district, synchronize to move down or synchronize to move up by becoming each shot point seen on big gun line (9).
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| CN201610401104.2A CN106019365A (en) | 2016-06-08 | 2016-06-08 | Acquisition footprint weakening shotpoint transferring three dimensional seismic survey system and survey method therefor |
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| CN201610401104.2A CN106019365A (en) | 2016-06-08 | 2016-06-08 | Acquisition footprint weakening shotpoint transferring three dimensional seismic survey system and survey method therefor |
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| CN106019365A true CN106019365A (en) | 2016-10-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748458A (en) * | 2019-10-30 | 2021-05-04 | 中国石油天然气集团有限公司 | Online real-time bin acquisition method and device for field fine view change |
| CN112748458B (en) * | 2019-10-30 | 2024-05-28 | 中国石油天然气集团有限公司 | Online real-time surface element acquisition method and device for on-site fine observation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748458A (en) * | 2019-10-30 | 2021-05-04 | 中国石油天然气集团有限公司 | Online real-time bin acquisition method and device for field fine view change |
| CN112748458B (en) * | 2019-10-30 | 2024-05-28 | 中国石油天然气集团有限公司 | Online real-time surface element acquisition method and device for on-site fine observation |
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