Seismic inversion big data generation method based on convolutional neural network

A convolutional neural network, seismic inversion technology, applied in neural learning methods, biological neural network models, seismology for logging records, etc., can solve problems such as the reduction of resolution and accuracy of exploration data

Active Publication Date: 2019-11-22
SOUTHWEST PETROLEUM UNIV
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  • Abstract
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Problems solved by technology

However, due to the complex geological conditions on the surface such as deserts, Gobi or piedmont, and the underground structures such as faults, cracks, buried hills, etc., the resolution and accuracy of exploration data are greatly reduced.
Low-quality exploration big data makes it a huge challenge to efficiently separate the effective information of the data and use it for various processing and interpretation

Method used

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  • Seismic inversion big data generation method based on convolutional neural network
  • Seismic inversion big data generation method based on convolutional neural network
  • Seismic inversion big data generation method based on convolutional neural network

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Embodiment Construction

[0014] The generation method of seismic inversion big data based on convolutional neural network includes the following detailed steps in turn:

[0015] Step 1: Perform probability density function statistics on each group of logging wave impedance data in the target work area, and select two groups of data that meet the screening conditions.

[0016] Step 2: Select one set of the above two sets of wave impedance data as the initial well data A, and the other set as the target well data B, randomly select a point i in A according to formula 1 and perform disturbance drift based on the greedy algorithm. The wave impedance data with a probability of 0 in the histogram of the geological model of the work area migrated to the non-zero probability category ( figure 1 ), based on formula 3 to get the final disturbance result V new_ And combined into data C.

[0017] i=N*random(0~1)+0.5 (1)

[0018]

[0019]

[0020] Among them, N is the total sample points of a group of wel...

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Abstract

The invention discloses a seismic inversion big data generation method based on a convolutional neural network. The method is characterized in that a big data set is generated based on data statistical feature migration for realizing seismic inversion for the convolutional neural network. Artificial intelligence, geophysics, spatial statistics, information science and other multiple disciplines are integrated, a deep learning technology, a big data technology, a seismic inversion technology and the like are organically combined, big data are generated by small data for a data set required by seismic inversion, so that the problem of low quality of field exploration data is solved, the data collection cost and theexploration risk are reduced, and the defects in the prior art are overcome.

Description

technical field [0001] The invention relates to the technical field of petroleum and natural gas geophysical exploration, and the specific field is a method for generating large data of seismic inversion based on a convolutional neural network. Background technique [0002] With the continuous improvement and development of oil and gas exploration technology, the degree of development of natural resources such as oil and gas has gradually increased. Limited resources make efficient exploration and production more difficult. In geophysical exploration, seismic inversion is an inverse problem of inferring the real situation of subsurface geology and various properties of geological models based on the seismic data obtained from actual observations; different from forward modeling, inversion usually has multiple solutions and ill-posed properties. The results obtained are often influenced by factors such as the data and processing methods used. The data used in seismic inversi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/30G01V1/40G06N3/04G06N3/08
CPCG01V1/28G01V1/306G01V1/40G06N3/08G01V2210/6226G06N3/045
Inventor 黄旭日代月徐云贵胡叶正曹卫平唐静
Owner SOUTHWEST PETROLEUM UNIV
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