CN-121995460-A - Land gun aliasing data processing method and device, electronic equipment and readable storage medium

CN121995460ACN 121995460 ACN121995460 ACN 121995460ACN-121995460-A

Abstract

The embodiment of the invention provides a land wellgun aliasing data preprocessing method, a device, electronic equipment and a readable storage medium, wherein the method comprises the steps of obtaining source aliasing data of a land wellgun; the method comprises the steps of determining first arrival time of a main well gun and first arrival time of a secondary well gun from source aliasing data, partitioning the seismic data according to the first arrival time of the main well gun and the first arrival time of the secondary well gun to obtain main well gun seismic data, secondary well gun seismic data and background noise data before well gun excitation in the source aliasing data, and partitioning noise attenuation is carried out on abnormal main well gun seismic data and abnormal secondary well gun seismic data corresponding to the abnormal seismic data based on abnormal background noise data in the background noise data.

Inventors

ZHANG HUA
WANG GUANGYIN
CHEN SANPING
LUO HONGMING
DUAN PENGFEI
CAO ZHONGLIN

Assignees

中国石油天然气集团有限公司
中国石油集团东方地球物理勘探有限责任公司
中油油气勘探软件国家工程研究中心有限公司

Dates

Publication Date: 20260508
Application Date: 20241107

Claims (10)

1. A method for preprocessing aliased data of land wellcannons, the method comprising: Acquiring source aliasing data of a land wellgun, wherein the source aliasing data comprises seismic data received by a plurality of wave detection points; Determining the first arrival time of a main well gun and the first arrival time of a secondary well gun in each seismic data from the source aliasing data; Partitioning the seismic data according to the first arrival time of the main wellgun and the first arrival time of the auxiliary wellgun to obtain main wellgun seismic data, auxiliary wellgun seismic data and background noise data before wellgun excitation in source aliasing data, wherein the receiving time of the background noise data in the same seismic data is smaller than the first arrival time of the main wellgun; Determining abnormal seismic data in the seismic data based on the amplitude values of the background noise data; and carrying out noise attenuation on the abnormal main well gun seismic data and the abnormal auxiliary well gun seismic data corresponding to the abnormal seismic data based on the abnormal background noise data corresponding to the abnormal seismic data aiming at each abnormal seismic data to obtain target aliasing data.
2. The method of claim 1, wherein the determining anomalous seismic data in the seismic data based on the amplitude value of the background noise data comprises: acquiring a root mean square amplitude value of the background noise data; And when the root mean square amplitude value is larger than a preset amplitude value, determining that the seismic data corresponding to the background noise data is abnormal seismic data.
3. The method of claim 1, wherein said noise attenuating the anomalous primary and secondary well cannon seismic data corresponding to the anomalous seismic data based on anomalous background noise data corresponding to the anomalous seismic data for each of the anomalous seismic data comprises: Determining a first amplitude value of each frequency band of the abnormal main wellgun seismic data in a frequency domain and a second amplitude value of each frequency band of the abnormal auxiliary wellgun seismic data in the frequency domain for each abnormal seismic data, and determining an abnormal amplitude value of each frequency band of the abnormal background noise data in the frequency domain; acquiring a threshold amplitude value based on the abnormal amplitude value; attenuating the abnormal main well cannon seismic data based on the threshold amplitude value under the condition that the first amplitude value is greater than the threshold amplitude value; And under the condition that the second amplitude value is larger than the threshold amplitude value, attenuating the abnormal auxiliary well cannon seismic data based on the threshold amplitude value.
4. The method of claim 3, wherein the primary borehole seismic data comprises primary borehole first arrival data and primary borehole reflection data, and wherein the secondary borehole seismic data comprises secondary borehole first arrival data and secondary borehole reflection data; According to the first arrival time of the main wellgun and the first arrival time of the auxiliary wellgun, partitioning the seismic data to obtain main wellgun seismic data, auxiliary wellgun seismic data and background noise data before wellgun excitation in source aliasing data, wherein the method comprises the following steps: taking data, of which the receiving time is between the first arrival time of the main well cannon and the first preset receiving time, in the seismic data as first arrival data of the main well cannon; taking data, of the seismic data, of which the receiving time is between the first preset receiving time and the first arrival time of the auxiliary well cannon as the main well cannon reflection data; Taking data, of which the receiving time is between the first arrival time of the auxiliary well cannon and a second preset receiving time, in the seismic data as first arrival data of the auxiliary well cannon; Taking data, of the seismic data, of which the receiving time is between the second preset receiving time and the third preset receiving time as the auxiliary well cannon reflection data; And taking the data with the receiving time before the first arrival time of the main gun in the seismic data as background noise data.
5. The method of claim 4, wherein the determining the first amplitude value for each frequency bin of the anomalous primary borehole seismic data in the frequency domain and the second amplitude value for each frequency bin of the anomalous secondary borehole seismic data in the frequency domain comprises: determining a third amplitude value of the first arrival data of the abnormal main well cannon in each frequency band in the frequency domain, a fourth amplitude value of the reflection data of the abnormal main well cannon in each frequency band in the frequency domain, a fifth amplitude value of the first arrival data of the abnormal auxiliary well cannon in each frequency band in the frequency domain and a sixth amplitude value of the reflection data of the abnormal auxiliary well cannon in each frequency band in the frequency domain; The attenuating the abnormal main well cannon seismic data based on the threshold amplitude value, if the first amplitude value is greater than the threshold amplitude value, includes: Attenuating the first arrival data of the abnormal main gun based on the threshold amplitude value under the condition that the third amplitude value is larger than the threshold amplitude value; attenuating the abnormal main gun reflection data based on the threshold amplitude value under the condition that the fourth amplitude value is larger than the threshold amplitude value; Attenuating the anomalous secondary borehole seismic data based on the threshold amplitude value if the second amplitude value is greater than the threshold amplitude value, comprising: Attenuating the first arrival data of the abnormal auxiliary well cannon based on the threshold amplitude value under the condition that the fifth amplitude value is larger than the threshold amplitude value; And under the condition that the sixth amplitude value is larger than the threshold amplitude value, attenuating the abnormal auxiliary well cannon reflection data based on the threshold amplitude value.
6. A land wellcannon aliasing data preprocessing device, the device comprising: The acquisition module is used for acquiring source aliasing data of the land wellcannon, wherein the source aliasing data comprises seismic data received by a plurality of wave detection points; the first determining module is used for determining the first arrival time of the main well cannon and the first arrival time of the auxiliary well cannon in each seismic data from the source aliasing data; The second determining module is used for partitioning the seismic data according to the first arrival time of the main well cannon and the first arrival time of the auxiliary well cannon to obtain main well cannon seismic data, auxiliary well cannon seismic data and background noise data before well cannon excitation in source aliasing data, wherein the receiving time of the background noise data in the same seismic data is smaller than the first arrival time of the main well cannon; the receiving module is used for determining abnormal seismic data in the seismic data based on the amplitude value of each background noise data; the output module is used for carrying out noise attenuation on the abnormal main well gun seismic data and the abnormal auxiliary well gun seismic data corresponding to the abnormal seismic data based on the abnormal background noise data corresponding to the abnormal seismic data aiming at each abnormal seismic data to obtain target aliasing data.
7. The apparatus of claim 6, wherein the output module comprises: The first amplitude value module is used for determining a first amplitude value of each frequency band of the abnormal main wellgun seismic data in a frequency domain and a second amplitude value of each frequency band of the abnormal auxiliary wellgun seismic data in the frequency domain for each abnormal seismic data, and determining an abnormal amplitude value of each frequency band of the abnormal background noise data in the frequency domain; The second amplitude value module is used for acquiring a threshold amplitude value based on the abnormal amplitude value; The first output module is used for attenuating the abnormal main well cannon seismic data based on the threshold amplitude value under the condition that the first amplitude value is larger than the threshold amplitude value; And the second output module is used for attenuating the abnormal auxiliary well cannon seismic data based on the threshold amplitude value under the condition that the second amplitude value is larger than the threshold amplitude value.
8. The apparatus of claim 7, wherein the primary borehole seismic data comprises primary borehole first arrival data and primary borehole reflection data, and wherein the secondary borehole seismic data comprises secondary borehole first arrival data and secondary borehole reflection data; the second determining module includes: The first determining submodule is used for taking data, of which the receiving time is between the first arrival time of the main well cannon and the first preset receiving time, in the seismic data as first arrival data of the main well cannon; the second determining submodule is used for taking data, of which the receiving time is between the first preset receiving time and the first arrival time of the auxiliary well cannon, in the seismic data as the main well cannon reflection data; the third determining submodule is used for taking data, of which the receiving time is between the first arrival time of the auxiliary well cannon and the second preset receiving time, in the seismic data as first arrival data of the auxiliary well cannon; A fourth determining submodule, configured to use data, of the seismic data, whose reception time is between the second preset reception time and a third preset reception time, as the auxiliary well cannon reflection data; and a fifth determining submodule, configured to use data, of the seismic data, whose reception time is before the first arrival time of the main gun as background noise data.
9. An electronic device, comprising: A processor, a memory and a computer program stored on the memory and executable on the processor, the processor implementing the land wellcannon aliasing data processing apparatus method according to any one of claims 1-5 when the program is executed.
10. A readable storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the land wellcannon aliasing data processing method of any one of claims 1-5.

Description

Land gun aliasing data processing method and device, electronic equipment and readable storage medium Technical Field The invention belongs to the field of seismic exploration data processing, and particularly relates to a land well cannon aliasing data processing method, a land well cannon aliasing data processing device, electronic equipment and a readable storage medium. Background The land well cannon exploration environment is complex, and the land well powderman journey site often accompanies complex environmental factors such as river and reservoir, highway and railway, engineering construction and the like, so that background abnormal noise in land well cannon aliasing data develops, and a plurality of well cannons are involved in the land well cannon operation process, so that higher noise attenuation requirements are provided for the processing of the plurality of well cannon aliasing data. Disclosure of Invention The invention provides a land wellgun aliasing data processing method, a land wellgun aliasing data processing device, electronic equipment and a storage medium, so as to solve the problem of difficulty in attenuation of abnormal noise in land wellgun aliasing data. In order to solve the technical problems, the invention is realized as follows: in a first aspect, the present invention provides a land wellcannon aliasing data processing method, the method comprising: Acquiring source aliasing data of a land wellgun, wherein the source aliasing data comprises seismic data received by a plurality of wave detection points; Determining the first arrival time of a main well gun and the first arrival time of a secondary well gun in each seismic data from the source aliasing data; Partitioning the seismic data according to the first arrival time of the main wellgun and the first arrival time of the auxiliary wellgun to obtain main wellgun seismic data, auxiliary wellgun seismic data and background noise data before wellgun excitation in source aliasing data, wherein the receiving time of the background noise data in the same seismic data is smaller than the first arrival time of the main wellgun; Determining abnormal seismic data in the seismic data based on the amplitude values of the background noise data; and carrying out noise attenuation on the abnormal main well gun seismic data and the abnormal auxiliary well gun seismic data corresponding to the abnormal seismic data based on the abnormal background noise data corresponding to the abnormal seismic data aiming at each abnormal seismic data to obtain target aliasing data. In a second aspect, the present invention provides a land wellcannon aliasing data processing apparatus, the apparatus comprising: The acquisition module is used for acquiring source aliasing data of the land wellcannon, wherein the source aliasing data comprises seismic data received by a plurality of wave detection points; the first determining module is used for determining the first arrival time of the main well cannon and the first arrival time of the auxiliary well cannon in each seismic data from the source aliasing data; The second determining module is used for partitioning the seismic data according to the first arrival time of the main well cannon and the first arrival time of the auxiliary well cannon to obtain main well cannon seismic data, auxiliary well cannon seismic data and background noise data before well cannon excitation in source aliasing data, wherein the receiving time of the background noise data in the same seismic data is smaller than the first arrival time of the main well cannon; the receiving module is used for determining abnormal seismic data in the seismic data based on the amplitude value of each background noise data; the output module is used for carrying out noise attenuation on the abnormal main well gun seismic data and the abnormal auxiliary well gun seismic data corresponding to the abnormal seismic data based on the abnormal background noise data corresponding to the abnormal seismic data aiming at each abnormal seismic data to obtain target aliasing data. In a third aspect, the invention provides an electronic device comprising a processor, a memory and a computer program stored on the memory and operable on the processor, wherein the processor implements the Liu Dejing shot aliasing data processing method described above when executing the program. In a fourth aspect, the present invention provides a readable storage medium, which when executed by a processor of an electronic device, enables the electronic device to perform the above-described Liu Dejing shot-aliasing data processing method. The method comprises the steps of obtaining source aliasing data of land wellheads, wherein the source aliasing data comprise seismic data received by a plurality of detection points, determining first arrival time of a main wellhead and first arrival time of a sub-wellhead in the seismic data from the source aliasing data, partitioning the