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Carbonate rock dolomite content simulation method based on ground laser scanning

A technology of ground laser scanning and carbonate rock, which is used in the exploration of optical devices, design optimization/simulation, etc., to achieve the effect of good application prospects

Pending Publication Date: 2021-01-19
PETROCHINA CO LTD
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Only local samples of field geological sections can be measured

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  • Carbonate rock dolomite content simulation method based on ground laser scanning
  • Carbonate rock dolomite content simulation method based on ground laser scanning
  • Carbonate rock dolomite content simulation method based on ground laser scanning

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[0058] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the following specific examples, but it should not be construed as limiting the scope of the present invention.

[0059] figure 1 The specific process flow diagram of the method for simulating the dolomite content of carbonate rocks based on ground laser scanning provided in this embodiment is shown, as figure 1 As shown, the method includes the following steps:

[0060] 1. Field geological profile data collection and rock sample sampling

[0061] The field geological profile data acquisition system includes a ground lidar scanner and a high-resolution digital camera. In this embodiment, the ground laser radar equipment selected is the Austrian rigel-vz400 ground laser radar scanner. In this embodiment, the ground laser radar scanner is used to...

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Abstract

The invention provides a carbonate rock dolomite content simulation method based on ground laser scanning. The method comprises the following steps: acquiring field carbonate rock reservoir geologicalprofile data; establishing a relation model between the laser intensity value of the carbonate rock sample and the dolomite content, and taking the relation model as a prediction model of the dolomite content of the carbonate rock sample; establishing a carbonate reservoir digital geological section surface layer model according to the field carbonate reservoir geological section data; and carrying out dolomite content prediction representation on all nodes of the carbonate reservoir digital geological section surface layer model by utilizing the prediction model of the dolomite content of the carbonate rock sample to obtain planar distribution of the dolomite content of the carbonate reservoir geological section. The method has the advantages of rapid and accurate prediction and the like, provides a new thought for fine and quantitative characterization of dolomite content of the carbonate reservoir profile, and has a good application prospect in oil and gas exploration and development and geological application.

Description

technical field [0001] The invention relates to a method for simulating dolomite content in carbonate rocks based on ground laser scanning, and belongs to the technical field of application of remote sensing technology in fine geology of carbonate rocks. Background technique [0002] Carbonate rocks are important oil storage rocks, and 50% of the world's oil and natural gas are stored in carbonate rocks. Carbonate rocks are mainly sedimentary rocks composed of calcite and dolomite. Calcite-based rocks are called limestone, and dolomite-based rocks are called dolomite. The main component of calcite is calcium carbonate. This kind of sedimentary rock is relatively solid, has poor porosity and low permeability, and underground fluids often cannot penetrate it well. During the geological structure changes of calcium carbonate deposits, due to the erosion of ancient seawater, a large amount of magnesium ions in seawater exchanged with calcium ions in calcium carbonate. This pro...

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Application Information

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IPC IPC(8): G01V8/10G06F30/20
CPCG01V8/10
Inventor 曾齐红张友焱王文志于世勇马志国叶勇胡艳申晋利邢学文
Owner PETROCHINA CO LTD
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