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A method for on-site rapid identification of hydrate saturation and a processing terminal

A discriminating method and hydrate technology, applied in complex mathematical operations and other directions, to achieve the effect of simple use, wide use and high efficiency

Inactive Publication Date: 2019-10-18
GUANGZHOU MARINE GEOLOGICAL SURVEY +1
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  • Application Information

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Problems solved by technology

[0004] The second purpose of the present invention is to provide a processing terminal, which can solve the problem of rapid identification of hydrate saturation on site

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  • A method for on-site rapid identification of hydrate saturation and a processing terminal
  • A method for on-site rapid identification of hydrate saturation and a processing terminal
  • A method for on-site rapid identification of hydrate saturation and a processing terminal

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Embodiment Construction

[0024] Below, in conjunction with accompanying drawing and specific embodiment, the present invention is described further:

[0025] At first introduce the relevant basic technology of the present invention: as figure 1 and figure 2 As shown, in order to avoid the inaccurate calculation of hydrate saturation by the Archie formula and improve the calculation accuracy and precision of hydrate saturation, the two-parameter hydrate saturation calculation method of deep resistivity + acoustic time difference can be adopted. The two-parameter calculation of hydrate saturation is based on the following ideas:

[0026] In the process of long-term research on the physical characteristics of hydrates, as well as numerous geophysical logging data, the two parameters of deep resistivity and acoustic wave time difference are most obviously affected by hydrates. Relatively high deep resistivity and relatively low acoustic wave Time difference is a typical logging response characteristic ...

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Abstract

The invention relates to a hydrate saturation on-site rapid discrimination method and a processing terminal, and the method sequentially comprises the following steps: 1, presetting a multivariate function, and building a corresponding multivariate function intersection diagram under a rectangular plane coordinate system according to the multivariate function to obtain a hydrate saturation rapid discrimination chart; And step 2, acquiring a deep resistivity RT value and a sonic time difference AC value obtained from logging information acquired from a natural gas hydrate drilling well position, projecting the RT value and the AC value into a hydrate saturation rapid discrimination chart to obtain a projection position, and obtaining a hydrate saturation value according to the projection position. The method has the advantages that the method is used; The hydrate saturation can be quickly judged only by obtaining the value of the sonic time difference AC and the value of the deep resistivity RT from on-site logging data, a hydrate saturation quick judgment chart is adopted, specialized software is not needed for data processing, the hydrate saturation can be judged immediately on site, time is saved, and efficiency is extremely high.

Description

technical field [0001] The invention relates to the technical field of hydrate saturation calculation, in particular to an on-site rapid discrimination method and a processing terminal for hydrate saturation. Background technique [0002] In the process of gas hydrate exploration and development, the determination of hydrate saturation is an essential and important parameter. As for the determination of hydrate saturation, the conventional method is based on the Archie formula, and the on-site logging data needs to be processed by logging interpreters using specialized software to obtain it, which cannot be determined immediately at the operation site , so that at the exploration and development construction site, it is impossible to adjust and improve the plan deployment in time based on the calculation of hydrate saturation, which wastes a lot of time and leads to the inefficiency of the overall hydrate exploration operation. In view of such a situation, it is necessary t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/18
Inventor 陆敬安王伟尉建功刘暉刘俊东梁金强康冬菊郭依群李海燕郭珍珍徐明骆晓锋
Owner GUANGZHOU MARINE GEOLOGICAL SURVEY