A method for identifying volcanic rock lithology based on characteristic parameter curves of acoustic wave and resistivity

A technology of characteristic parameters and sonic time difference curve, which is applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, material analysis by electromagnetic means, instruments, etc., which can solve the complex multi-parameter identification of well logging and the unclear lithologic response relationship of igneous rocks, etc. problem, to achieve the effect of intuitive and reliable parameter selection, improved convenience and objectivity, and good coincidence

Active Publication Date: 2022-04-15
北京金海能达科技有限公司 +1
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Problems solved by technology

[0004] Purpose of the invention: the present invention makes improvements to the problems existing in the above-mentioned prior art, that is, the present invention discloses a method for identifying the lithology of igneous rocks based on characteristic parameter curves of acoustic waves and resistivity, which solves the problem of single logging parameters affecting the lithology of igneous rocks. The response relationship is not obvious, and the identification of multi-parameters in well logging is more complicated

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  • A method for identifying volcanic rock lithology based on characteristic parameter curves of acoustic wave and resistivity
  • A method for identifying volcanic rock lithology based on characteristic parameter curves of acoustic wave and resistivity
  • A method for identifying volcanic rock lithology based on characteristic parameter curves of acoustic wave and resistivity

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[0036] Specific embodiments of the present invention will be described in detail below.

[0037] The method for identifying the lithology of volcanic rocks based on the characteristic parameter curve of acoustic wave and resistivity comprises the following steps:

[0038] (1) Obtain the acoustic wave time difference curve of the volcanic rock to be identified, and then enter step (2);

[0039] (2) Obtain the resistivity curve of the volcanic rock to be identified, and then enter step (3);

[0040] (3) carry out mathematical operation to the acoustic time difference curve that step (1) obtains and the resistivity curve that step (2) obtains, obtain characteristic parameter curve, concrete formula is as follows:

[0041] In the formula

[0042] CP is the characteristic parameter curve;

[0043] RT is the resistivity curve;

[0044] AC is the acoustic wave time difference curve; where:

[0045] When 0≤CP<0.4, the lithology of the volcanic rock to be identified is diorite; ...

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Abstract

The invention relates to a method for identifying volcanic rock lithology based on characteristic parameter curves of acoustic waves and electrical resistivity, comprising the following steps: (1) acquiring the acoustic time difference curve of the volcanic rock to be identified; (2) acquiring the electrical resistivity curve of the volcanic rock to be identified; 3) Mathematical operation is performed on the acoustic time difference curve obtained in step (1) and the resistivity curve obtained in step (2) to obtain a characteristic parameter curve. The method for identifying the lithology of volcanic rocks based on characteristic parameter curves of acoustic waves and resistivity disclosed by the present invention has the following beneficial effects: 1. Improve the identification degree of volcanic rock lithology in the vertical direction, and have a good agreement with cuttings logging; 2. Improve the lithology of volcanic rocks It improves the convenience and objectivity of volcanic rock lithology identification.

Description

technical field [0001] The invention relates to a method for identifying lithology, in particular to a method for identifying volcanic rock lithology based on acoustic waves and characteristic parameter curves of resistivity. Background technique [0002] In the history of oil exploration and development in the world, with the development of the petroleum industry and the improvement of exploration technology, oil and gas exploration at home and abroad have continuously achieved success in volcanic rock reservoirs, showing huge potential for oil and gas exploration and development. Compared with igneous rocks, the lithology of igneous rocks is more complicated. How to identify the lithology of volcanic rocks has always been a big problem in the industry. [0003] Due to the changes in the mineral components of volcanic rocks, such as quartz, feldspar, olivine, pyroxene, hornblende, and mica, the volcanic lithology is complex and changeable, and the logging response character...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/04G01N29/07
CPCG01N27/041G01N29/07G01N2291/011G01N2291/0232
Inventor 贾曙光吴为正曾探
Owner 北京金海能达科技有限公司
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