Method for forecasting oil gas utilizing earthquake data object constructional features

A technology of seismic data volume and structural features, which can be used in complex mathematical operations and other directions to solve problems such as low prediction accuracy and discordant oil and gas prediction.

Inactive Publication Date: 2011-03-30
林昌荣
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Problems solved by technology

In general, traditional oil and gas prediction methods are divided into vertical prediction and horizontal prediction methods, but due to the inconsistency between the two prediction methods, the vertical and horizontal oil and gas predictions have long been inconsistent, resulting in low prediction accuracy

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  • Method for forecasting oil gas utilizing earthquake data object constructional features
  • Method for forecasting oil gas utilizing earthquake data object constructional features
  • Method for forecasting oil gas utilizing earthquake data object constructional features

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0036] The invention provides a method for predicting oil and gas by utilizing the structure characteristics of seismic data volume. The following combination figure 1 The present invention will be described in detail.

[0037](1) Extract seismic amplitude data sequence, establish gray sequence prediction model and determine gray outliers

[0038] First, according to the extracted seismic data sequence, a gray sequence prediction model (GM model) is established. The gray model is expressed as GM (1, n), 1 means the first order, and n means the di...

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Abstract

The invention provides a method for forecasting the oilgas using the earthquake data body structure feature, comprising: extracting the earthquake amplitude data sequence; establishing gray sequence forecasting model; computing the amplitude data sequence predicted value of the earthquake data; calculating the error between the predicted value and the measured value; determining the earthquake amplitude data gray abnormal value segment based on the error; the original earthquake amplitude data and each earthquake amplitude data gray abnormal value segment being subjected to dimensionless treatment to respectively obtain the parent sequence and each subsequence; computing the correlation coefficient between the parent sequence and each subsequence and then computing the association degreesbetweent the parent sequence and each subsequence based on the correlation coefficient; obtaining the association sequence by sorting the association degrees by size and determining the oilgas layer based on the association sequence. The method does not have too many condition limits to the data and is suitable for each stage of the oilgas field from exploring to developing with wide application field and reliable precasted result.

Description

technical field [0001] The invention relates to a method for predicting oil and gas, in particular to a method for predicting oil and gas by utilizing structural features of seismic data volumes. Background technique [0002] The amount of seismic information includes oil and gas information. The total amount of information recorded on the seismic line is very large, at least including oil and gas information and non-oil and gas information. When seismic waves pass through oil and gas layers, not only the seismic parameters change , and there are also different seismic data volume structures, the difference in the physical properties of oil and gas sandstone reservoirs and surrounding rocks, and the difference in fluid properties can not only make the seismic parameters Different seismic phases (that is, traditional prediction method, numerical difference method) will appear due to the change of seismic data, and different seismic data volume structures will also appear. Us...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/15
Inventor 林昌荣
Owner 林昌荣
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