CN114114386B - Transverse wave source device based on air explosion source cavity and seismic data acquisition method - Google Patents
Transverse wave source device based on air explosion source cavity and seismic data acquisition method Download PDFInfo
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/133—Generating seismic energy using fluidic driving means, e.g. highly pressurised fluids; using implosion
- G01V1/137—Generating seismic energy using fluidic driving means, e.g. highly pressurised fluids; using implosion which fluid escapes from the generator in a pulsating manner, e.g. for generating bursts, airguns
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- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
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- G01V1/301—Analysis for determining seismic cross-sections or geostructures
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
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- G01V2210/641—Continuity of geobodies
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Abstract
The invention provides a transverse wave seismic source device based on a gas explosion seismic source cavity and a seismic data acquisition method, wherein a central shaft is arranged at the vertical center of a rectangular steel plate, the two vertical sides are respectively fixed with the gas explosion seismic source cavity, and the two gas explosion seismic source cavities are respectively positioned at two sides of the rectangular steel plate; one side surface of the air explosion vibration source cavity is cut into a thinner thin cavity surface, and the opposite surface of the thin cavity surface is fixed on the surface of the rectangular steel plate; an electronic ignition gun is arranged in the center of the air explosion focus cavity, and the air explosion focus cavity is connected with an explosion-proof metal gas tank. And sequentially exciting a shear transverse wave source signal which is parallel to the direction of a source line and propagates downwards and a shear transverse wave source signal which is perpendicular to the direction of the source line and propagates downwards at each source point, and sequentially recording two transverse wave data which are mutually orthogonal and parallel to the ground and are excited by the transverse wave source device by a three-component detector on the ground, wherein the seismic converted longitudinal wave data which are perpendicular to the ground really realize the pure transverse wave and converted longitudinal wave seismic exploration which are parallel to the ground.
Description
Technical Field
The invention belongs to the field of a shock excitation method of a seismic exploration source in a geophysical exploration technology, and particularly relates to a transverse wave source device based on a gas explosion source cavity and a seismic data acquisition method.
Background
Seismic waves in seismic exploration are created by manual excitation. Artificial seismic sources are generally classified into two major types, one being explosive sources and the other being non-explosive sources. The explosive source mainly adopts solid explosive explosion, detonator detonation and physical explosion (air gun, electric spark, heavy hammer and the like), wherein the excitation range and the use condition of each method are limited.
The air explosion source belongs to a non-explosive source. The gas explosion source is to make the mixed gas (such as propane and oxygen) explode in a sealed cylindrical explosion chamber to drive the movable bottom plate of the explosion chamber to strike the ground and excite the earthquake waves. Such sources are similar to hammering sources, typically fired simultaneously with three or more pneumatic devices, and firing signals are sent by the recording device over the air. The air explosion source is installed on a heavy vehicle, and the generated pulse is rich in low frequency, so that the air explosion source has larger penetrating capacity and is used for land exploration. The air-exploded source for the ocean is called a water pulse.
The air explosion source is also called as air gun source, and is characterized by that the mixture of propane, oxygen or air is introduced into explosion chamber, and the electric spark is used for detonating, or the vibration wave is directly produced, or the air explosion is used for pushing heavy objects to impact ground. Can be applied in sea or land. Other gases such as ammonia and some nitrogen compounds may also be used for the air blast source. After mixing, they act as explosive substances, but all require special detonation equipment. This source is superior in transmission to solid explosive and is a source of high seismic energy in non-explosive sources, which has the disadvantage of carrying various special containers with gas and being somewhat dangerous.
Various source devices or equipment currently used on land in the seismic exploration industry can individually excite either longitudinal wave source signals or transverse wave source signals. If full-wave field source signals are to be excited at the same position, currently, a source device or equipment needs to be replaced in operation, longitudinal wave source signals and transverse wave source signals are excited respectively, so that production efficiency is low, after the source device or equipment is replaced, it is difficult to ensure that coupling conditions of different source devices or equipment and the ground are completely consistent, and subsequent data processing work is difficult to develop smoothly. Various ground transverse wave seismic sources used in the current industry have weak energy generally, and two mutually orthogonal high-power pure transverse wave seismic source signals are difficult to generate.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a transverse wave seismic source device based on a gas explosion seismic source cavity and a seismic data acquisition method.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the transverse wave vibration source device based on the air explosion vibration source cavity comprises a rectangular steel plate, wherein a central shaft is arranged at the vertical center of the rectangular steel plate, and the rectangular steel plate rotates clockwise or anticlockwise around the central shaft;
the two vertical edges of the outer end of the rectangular steel plate are respectively fixed with an air explosion vibration source cavity, and the two air explosion vibration source cavities are respectively positioned at two opposite sides of the rectangular steel plate; the air explosion seismic source cavity is a square column-shaped high-temperature-resistant high-strength metal cavity;
one side surface of the air explosion vibration source cavity is cut into a thinner thin cavity surface, and the opposite surface of the thin cavity surface is fixed on the surface of the outer end of the rectangular steel plate;
an electronic ignition gun is arranged in the center of the air explosion seismic source cavity and is connected with a control unit through a wire;
the gas explosion seismic source cavity is connected with an explosion-proof metal gas tank through a high-pressure-resistant metal gas pipe, and the explosion-proof metal gas tank stores compressed gas and supplies high-pressure gas to the gas explosion seismic source cavity.
The air explosion vibration source device is characterized by further comprising a cement groove, wherein the rectangular steel plate and the air explosion vibration source cavities fixed on the rectangular steel plate are arranged in the cement groove, and long openings are formed in positions, opposite to the thin cavity surfaces of the two air explosion vibration source cavities, on the side walls of the cement groove.
The control unit comprises a GPS or Beidou time service, timing and positioning module, a wireless signal receiving and transmitting antenna and a wireless signal receiving and transmitting module.
The seismic data acquisition method of the transverse wave seismic source device based on the air explosion seismic source cavity comprises the following steps of:
s1, arranging three-component detectors in a transverse wave seismic exploration work area according to all detector positions arranged in a construction design, so that the directions of two horizontal components of the three-component detectors are respectively parallel and perpendicular to the detector measuring lines;
s2, excavating two mutually orthogonal rectangular soil pits in all artificial seismic source positions distributed according to construction design in a transverse wave seismic exploration work area, wherein one rectangular soil pit is parallel to a seismic source line, and the other rectangular soil pit is perpendicular to the seismic source line; respectively embedding two cement tanks provided with transverse wave source devices based on the air explosion source cavity into rectangular soil pits, backfilling the soil pits, and compacting backfilled soil or silt;
s3, exciting a transverse wave seismic source parallel to the direction of the seismic source line in advance: the control unit controls the synchronous opening of the explosion-proof metal gas tanks, and high-pressure gas is supplied to the two gas explosion seismic source cavities through the high-pressure-resistant metal gas pipes;
s4, the electronic ignition gun connected with the control unit detonates high-pressure mixed fuel gas in the two gas explosion seismic source cavities at the same time according to the predesigned time, and simultaneously sends seismic source vibration starting synchronous information to the ground three-component detector data acquisition control system through the wireless signal receiving and transmitting module of the electronic ignition gun;
s5, when the pressure of high-pressure combustion explosion gas generated during combustion explosion of high-pressure mixed gas in the gas explosion focus cavity reaches a certain threshold value, the thin cavity surfaces of the two gas explosion focus cavities facing outwards are exploded at a high speed, so that the thin cavity surfaces of the two gas explosion focus cavities impact the wall surfaces of the two soil pits corresponding to long openings formed in the gas explosion focus cavity and the cement groove at a high speed along two opposite tangential directions, and a rectangular steel plate fixed with the gas explosion focus cavity is caused to rotate around a central shaft;
s6, the rotating high-strength rectangular steel plate enables underground medium to generate shear transverse waves which are perpendicular to the direction of the seismic source line and are centered on the central axis;
s7, then exciting a transverse wave seismic source perpendicular to the direction of the seismic source line: repeating the steps S3 to S5 for the transverse wave seismic source embedded in the rectangular soil pit perpendicular to the seismic source line direction, so that the rotating high-strength rectangular steel plate generates shear transverse waves parallel to the seismic source line direction by taking the central shaft as the center in the underground medium;
s8, sequentially acquiring two transverse wave data which are mutually orthogonal and parallel to the ground and are sequentially excited by the seismic source position by a three-component detector which is arranged on the ground according to a design scheme;
s9, sequentially collecting two transverse wave data which are mutually orthogonal and parallel to the ground and excited by the seismic source point twice at each seismic source point position in a transverse wave seismic exploration work area according to the steps from the step S3 to the step S8;
s10, respectively combining and merging transverse wave data which are sequentially acquired by all the seismic source points and are parallel to the seismic source line and transverse wave data which are perpendicular to the seismic source line to respectively form pure transverse wave three-dimensional seismic data bodies in two directions;
s11, vertical components of a three-component detector arranged in a transverse wave seismic exploration work area can record uplink converted longitudinal wave data of uplink reflection back to the ground, which is generated by a downlink transverse wave excited by a ground pure transverse wave source at an impedance interface of each wave under the ground;
s12, respectively processing a vertical component three-dimensional seismic conversion longitudinal wave data body, a horizontal component transverse wave data body parallel to the direction of a seismic source line and a horizontal component transverse wave data body perpendicular to the direction of the seismic source line to respectively obtain a vertical component reflection longitudinal wave imaging data body, a horizontal component reflection transverse wave imaging data body parallel to the direction of the seismic source line and a horizontal component reflection transverse wave imaging data body perpendicular to the direction of the seismic source line, and carrying out fine structural interpretation of the underground geologic body by combining three sets of reflection wave imaging data bodies;
s13, respectively carrying out inversion treatment on the three sets of reflected wave imaging data bodies, extracting related attributes, carrying out identification, prediction and evaluation on fluids (oil, water and gas) in the underground geological body and in the pores of the underground rock stratum, and finally realizing comprehensive prediction, evaluation and quantitative interpretation on the fluid distribution in the oil and gas reservoir.
The ground three-component detector data acquisition control system uses a ground wired three-component detector, wherein the ground three-component wired detector is as follows: the device comprises one of a wired three-component moving coil detector, a wired three-component digital detector, a wired three-component acceleration detector, a wired three-component MEMS detector and a wired three-component optical fiber detector.
Alternatively, a ground wireless three-component detector is used, the ground three-component wireless detector being: the wireless three-component moving coil detector comprises one of a wireless three-component moving coil detector, a wireless three-component digital detector, a wireless three-component acceleration type detector, a wireless three-component MEMS detector and a wireless three-component optical fiber detector.
The invention provides a transverse wave source device based on an air explosion source cavity and a seismic data acquisition method, which can sequentially excite a shear transverse wave source signal which is parallel to the direction of a source line and propagates downwards and a shear transverse wave source signal which is perpendicular to the direction of the source line and propagates downwards at each source point, and a three-component detector arranged on the ground can sequentially record two transverse wave data (transverse wave data parallel to the source line and transverse wave data perpendicular to the source line) which are perpendicular to each other and parallel to the ground and excited by the transverse wave source device, so that the seismic converted longitudinal wave data perpendicular to the ground really realize the seismic exploration of pure transverse waves and converted longitudinal waves parallel to the ground.
Drawings
FIG. 1 is a schematic diagram of a transverse wave source device based on an air explosion source cavity of the present invention;
FIG. 2 is a top view of a shear wave source device based on an air-exploded source cavity of the present invention;
fig. 3 is a top view of a shear wave source device of the present invention secured in a cement silo based on a gas explosion source cavity.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but they are not to be construed as limiting the invention, but merely as exemplifications, and are intended to provide advantages of the invention as more clearly and more readily understood.
The embodiment of the transverse wave source device based on the air explosion source cavity is as follows:
referring to fig. 1, a transverse wave seismic source device based on a gas explosion seismic source cavity comprises a rectangular steel plate 1, a central shaft 2 is arranged in the center of the rectangular steel plate 1, and a columnar high-temperature-resistant high-strength gas explosion seismic source metal cavity 3, a control unit 7 and an explosion-proof metal gas tank 9 are further included;
as shown in fig. 2, the outer end of the rectangular steel plate 1 is provided with an air explosion seismic source cavity 3 in the opposite direction.
One side surface of the columnar high-temperature-resistant high-strength air explosion seismic source cavity 3 is cut into a thin cavity surface 6, and the thin cavity surface 6 faces the outer surface of the rectangular steel plate 1. An electronic ignition gun 4 is arranged in the center of the air explosion focus cavity 3, and the electronic ignition gun 4 is connected with a control unit 7;
compressed fuel gas is stored in the high-pressure-resistant high-strength explosion-proof metal gas tank 9, and the high-pressure fuel gas is supplied to the gas explosion focus cavity 3 through the high-pressure-resistant metal gas pipe 5; the high-pressure fuel gas is a mixture of propane, oxygen or air;
the control unit 7 is internally provided with a GPS or Beidou time service, timing and positioning module, and a wireless signal receiving and transmitting antenna and a wireless signal receiving and transmitting module.
The air explosion vibration source cavity 3 is fixed at the outer end of the rectangular steel plate 1, one side surface of the air explosion vibration source cavity 3 is cut into a thinner thin cavity surface, the opposite surface of the thin cavity surface is fixed on the surface of the outer end of the rectangular steel plate, the inner end of the rectangular steel plate 1 is connected with the central shaft 2, and the rectangular steel plate 1 can rotate around the central shaft 2 in a clockwise or anticlockwise direction.
As shown in fig. 3, the whole transverse wave vibration source device based on the air explosion vibration source cavity is arranged in a cement groove 10 with three sealed faces, and two long openings 11 are cut at the positions corresponding to the thin cavity faces 6 of the two air explosion vibration source cavities 3.
The ground three-component detector data acquisition control system can use a ground wired three-component detector, wherein the ground three-component wired detector is as follows: the device comprises one of a wired three-component moving coil detector, a wired three-component digital detector, a wired three-component acceleration detector, a wired three-component MEMS detector and a wired three-component optical fiber detector.
The ground three-component detector data acquisition control system can also use a ground wireless three-component detector, wherein the ground three-component wireless detector is as follows: the wireless three-component moving coil detector comprises one of a wireless three-component moving coil detector, a wireless three-component digital detector, a wireless three-component acceleration type detector, a wireless three-component MEMS detector and a wireless three-component optical fiber detector.
The seismic data acquisition method of the transverse wave seismic source device based on the air explosion seismic source cavity comprises the following steps of:
s1, arranging three-component detectors in a transverse wave seismic exploration work area according to all detector positions arranged in a construction design, so that the directions of two horizontal components of the three-component detectors are respectively parallel and perpendicular to the detector measuring lines;
s2, excavating two mutually orthogonal rectangular soil pits in all artificial seismic source positions distributed according to construction design in a transverse wave seismic exploration work area, wherein one rectangular soil pit is parallel to a seismic source line, and the other rectangular soil pit is perpendicular to the seismic source line. Embedding two cement tanks 10 internally provided with a transverse wave seismic source device based on an air explosion seismic source cavity into a rectangular soil pit, backfilling the soil pit and compacting backfilled soil or silt;
s3, exciting a transverse wave seismic source parallel to the direction of the seismic source line in advance: the control unit 7 controls the synchronous opening of the explosion-proof metal gas tank 9, and high-pressure fuel gas is supplied to the two gas explosion seismic source cavities 3 through the high-pressure-resistant metal gas pipe 5;
s4, an electronic ignition gun 4 connected with a GPS timing, positioning and control unit 7 detonates high-pressure mixed fuel gas in the two gas explosion seismic source cavities 3 at the same time according to the predesigned time, and simultaneously sends seismic source vibration starting synchronous information to a ground three-component detector data acquisition control system through a wireless signal receiving and transmitting module thereof;
s5, when the pressure of high-pressure combustion explosion gas generated during combustion explosion of high-pressure mixed gas in the gas explosion source cavity 3 reaches a certain threshold value, the two thin cavity surfaces 6 of the gas explosion source cavity 3 facing outwards are exploded at a high speed, so that the two thin cavity surfaces impact the wall surfaces of two soil pits corresponding to long openings 11 formed in the gas explosion source cavity 3 and a cement groove 10 at a high speed along two opposite tangential directions, and a rectangular steel plate 1 fixed with the gas explosion source cavity 3 is caused to rotate around a central shaft;
s6, the rotating high-strength rectangular steel plate 1 enables underground medium to generate shear transverse waves which are perpendicular to the direction of the seismic source line and are centered on the central shaft 2;
s7, then exciting a transverse wave seismic source perpendicular to the direction of the seismic source line: repeating the steps S3 to S5 for the transverse wave seismic source embedded in the rectangular soil pit perpendicular to the seismic source line direction, so that the rotating high-strength rectangular steel plate 1 generates shear transverse waves parallel to the seismic source line direction by taking the central shaft 2 as the center in the underground medium;
s8, sequentially acquiring two transverse wave data which are mutually orthogonal and parallel to the ground and are sequentially excited by the seismic source position by a three-component detector which is arranged on the ground according to a design scheme;
s9, sequentially collecting two transverse wave data which are mutually orthogonal and parallel to the ground and excited by the seismic source point twice at each seismic source point position in a transverse wave seismic exploration work area according to the steps from the step S3 to the step S8;
s10, respectively combining and merging transverse wave data which are sequentially acquired by all the seismic source points and are parallel to the seismic source line and transverse wave data which are perpendicular to the seismic source line to respectively form pure transverse wave three-dimensional seismic data bodies in two directions;
s11, vertical components of a three-component detector arranged in a transverse wave seismic exploration work area can record uplink converted longitudinal wave data of uplink reflection back to the ground, which is generated by a downlink transverse wave excited by a ground pure transverse wave source at an impedance interface of each wave under the ground;
s12, respectively processing a vertical component three-dimensional seismic conversion longitudinal wave data body, a horizontal component transverse wave data body parallel to the direction of a seismic source line and a horizontal component transverse wave data body perpendicular to the direction of the seismic source line to respectively obtain a vertical component reflection longitudinal wave imaging data body, a horizontal component reflection transverse wave imaging data body parallel to the direction of the seismic source line and a horizontal component reflection transverse wave imaging data body perpendicular to the direction of the seismic source line, and carrying out fine structural interpretation of the underground geologic body by combining three sets of reflection wave imaging data bodies;
s13, respectively carrying out inversion treatment on the three sets of reflected wave imaging data bodies, extracting related attributes, carrying out identification, prediction and evaluation on fluids (oil, water and gas) in the underground geological body and in the pores of the underground rock stratum, and finally realizing comprehensive prediction, evaluation and quantitative interpretation on the fluid distribution in the oil and gas reservoir.
Other parts not described in detail are known in the art.
Claims (6)
1. The transverse wave source device based on the air explosion source cavity is characterized by comprising a rectangular steel plate (1), wherein a central shaft (2) is arranged at the vertical center of the rectangular steel plate (1), and the rectangular steel plate (1) rotates around the central shaft (2) clockwise or anticlockwise;
the two outer end vertical edges of the rectangular steel plate (1) are respectively fixed with an air explosion vibration source cavity (3), and the two air explosion vibration source cavities (3) are respectively positioned at two opposite sides of the rectangular steel plate (1); the air explosion seismic source cavity (3) is a square column-shaped high-temperature-resistant high-strength metal cavity;
one side surface of the air explosion vibration source cavity (3) is cut into a thin cavity surface (6), and the opposite surface of the thin cavity surface (6) is fixed on the surface of the outer end of the rectangular steel plate (1);
an electronic ignition gun (4) is arranged in the center of the air explosion focus cavity (3), and the electronic ignition gun (4) is connected with a control unit (7) through a lead (8);
the gas explosion focus cavity (3) is connected with an explosion-proof metal gas tank (9) through a high-pressure-resistant metal gas pipe (5), and the explosion-proof metal gas tank (9) stores compressed gas and high-pressure gas is supplied to the gas explosion focus cavity (3).
2. The transverse wave seismic source device based on the air explosion seismic source cavity according to claim 1, further comprising a cement groove (10), wherein the rectangular steel plate (1) and the air explosion seismic source cavity (3) fixed on the rectangular steel plate are arranged in the cement groove (10), and long openings (11) are formed in positions, opposite to the thin cavity surfaces (6) of the two air explosion seismic source cavities (3), on the side walls of the cement groove (10).
3. The transverse wave source device based on the air explosion source cavity according to claim 1, wherein the control unit (7) comprises a GPS or Beidou time service, timing and positioning module, a wireless signal receiving and transmitting antenna and a wireless signal receiving and transmitting module.
4. A method of seismic data acquisition using a transverse wave source device based on a gas-exploded source cavity as claimed in any one of claims 1 to 3, comprising the steps of:
s1, arranging three-component detectors in a transverse wave seismic exploration work area according to all detector positions arranged in a construction design, so that the directions of two horizontal components of the three-component detectors are respectively parallel and perpendicular to the detector measuring lines;
s2, excavating two mutually orthogonal rectangular soil pits in all artificial seismic source positions distributed according to construction design in a transverse wave seismic exploration work area, wherein one rectangular soil pit is parallel to a seismic source line, and the other rectangular soil pit is perpendicular to the seismic source line; respectively embedding two cement tanks (10) provided with transverse wave source devices based on the air explosion source cavity into rectangular soil pits, backfilling the soil pits, and compacting backfilled soil or silt;
s3, exciting a transverse wave seismic source parallel to the direction of the seismic source line in advance: the control unit (7) controls the synchronous opening of the explosion-proof metal gas tank (9) and simultaneously supplies high-pressure fuel gas to the two gas explosion seismic source cavities (3) through the high-pressure-resistant metal gas pipe (5);
s4, an electronic ignition gun (4) connected with the control unit (7) detonates high-pressure mixed fuel gas in the two gas explosion seismic source cavities (3) at the same time according to the preset time, and simultaneously sends seismic source vibration starting synchronous information to a ground three-component detector data acquisition control system through a wireless signal receiving and transmitting module of the high-pressure mixed fuel gas;
s5, when the pressure of high-pressure combustion explosion gas generated during combustion explosion of high-pressure mixed gas in the gas explosion source cavities (3) reaches a certain threshold value, the thin cavity surfaces (6) of the two gas explosion source cavities (3) facing outwards are exploded at a high speed, so that the thin cavity surfaces impact the wall surfaces of two soil pits corresponding to long openings (11) formed in the gas explosion source cavities (3) and the cement tanks (10) at a high speed along two opposite tangential directions, and a rectangular steel plate (1) fixed with the gas explosion source cavities (3) is caused to rotate around a central shaft;
s6, enabling the underground medium to generate shear transverse waves which are perpendicular to the direction of the seismic source line and are centered on the central shaft (2) by the rotating high-strength rectangular steel plate (1);
s7, then exciting a transverse wave seismic source perpendicular to the direction of the seismic source line: repeating the steps S3 to S5 for the transverse wave seismic source embedded in the rectangular soil pit perpendicular to the seismic source line direction, so that the rotating high-strength rectangular steel plate (1) generates shear transverse waves parallel to the seismic source line direction by taking the central shaft (2) as the center in the underground medium;
s8, sequentially acquiring two transverse wave data which are mutually orthogonal and parallel to the ground and are sequentially excited by the seismic source position by a three-component detector which is arranged on the ground according to a design scheme;
s9, sequentially collecting two transverse wave data which are mutually orthogonal and parallel to the ground and excited by the seismic source point twice at each seismic source point position in a transverse wave seismic exploration work area according to the steps from the step S3 to the step S8;
s10, respectively combining and merging transverse wave data which are sequentially acquired by all the seismic source points and are parallel to the seismic source line and transverse wave data which are perpendicular to the seismic source line to respectively form pure transverse wave three-dimensional seismic data bodies in two directions;
s11, vertical components of a three-component detector arranged in a transverse wave seismic exploration work area can record uplink converted longitudinal wave data of uplink reflection back to the ground, which is generated by a downlink transverse wave excited by a ground pure transverse wave source at an impedance interface of each wave under the ground;
s12, respectively processing a vertical component three-dimensional seismic conversion longitudinal wave data body, a horizontal component transverse wave data body parallel to the direction of a seismic source line and a horizontal component transverse wave data body perpendicular to the direction of the seismic source line to respectively obtain a vertical component reflection longitudinal wave imaging data body, a horizontal component reflection transverse wave imaging data body parallel to the direction of the seismic source line and a horizontal component reflection transverse wave imaging data body perpendicular to the direction of the seismic source line, and carrying out fine structural interpretation of the underground geologic body by combining three sets of reflection wave imaging data bodies;
s13, respectively carrying out inversion processing on the three sets of reflected wave imaging data bodies, extracting related attributes, carrying out fluid identification, prediction and evaluation in the underground geological body and the underground stratum pores, and finally realizing comprehensive prediction, evaluation and quantitative interpretation of fluid distribution in the oil and gas reservoir.
5. The method for acquiring seismic data of a transverse wave source device based on a gas explosion source cavity according to claim 4, wherein the ground three-component detector data acquisition control system uses a ground wired three-component detector which is one of a wired three-component moving coil detector, a wired three-component digital detector, a wired three-component acceleration detector, a wired three-component MEMS detector and a wired three-component optical fiber detector.
6. The method for acquiring seismic data of a transverse wave seismic source device based on a gas explosion seismic source cavity according to claim 5, wherein the ground three-component detector data acquisition control system uses a ground wireless three-component detector which is one of a wireless three-component moving coil detector, a wireless three-component digital detector, a wireless three-component acceleration detector, a wireless three-component MEMS detector and a wireless three-component fiber-optic detector.
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