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Sandstone compaction effect numerical simulation method

A numerical simulation and practical technology, applied in special data processing applications, instruments, geophysical measurements, etc., can solve the problems of numerical simulation research of 3D sandstone compaction and cannot meet the needs of evaluation of high porosity areas

Active Publication Date: 2021-07-30
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current research on sandstone compaction has not gone deep into the numerical simulation of 3D sandstone compaction, which cannot meet the needs of evaluation of high-porosity areas in low-permeability-tight sandstone reservoirs with few wells and seismic data.

Method used

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  • Sandstone compaction effect numerical simulation method
  • Sandstone compaction effect numerical simulation method
  • Sandstone compaction effect numerical simulation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 and Figure 20 As shown, a numerical simulation method of sandstone compaction aims to solve the problem of difficult evaluation of high-porosity areas in low-permeability-tight sandstones with few wells and seismic data, and conducts 3D numerical simulation research on sandstone compaction , has great theoretical significance and practical value.

[0038] A method for numerically simulating sandstone compaction, including 3D burial history and thermal history of target layer sandstone, 3D lithofacies model, compaction numerical simulation parameters and compaction numerical simulation, comprising the following steps:

[0039] Step 1. Collect data: collect geological data, well logging data, seismic data an...

Embodiment 2

[0049] Embodiment 2: as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 and Figure 20 As shown, a numerical simulation method of sandstone compaction provides technical support for the evaluation of high-porosity areas in deep low-permeability-tight sandstones in offshore areas with few wells. The present invention is based on well logging data, geological data, seismic data and analysis and test data to carry out 3D burial history and thermal history, 3D lithofacies model, mechanical compaction and chemical compaction parameters, Numerical simulation of compaction, porosity evolution process and high porosity value area, etc.

[0050] This embodiment provides a technical flow chart of a sandstone compaction numerical simulation method ( figure 1 ), including the following ...

Embodiment 3

[0074] Embodiment 3: as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 and Figure 20 As shown, a numerical simulation method of sandstone compaction is based on the 3D burial history and thermal history of the target layer sandstone, 3D lithofacies model, mechanical compaction parameters, chemical compaction parameters and compaction numerical simulation, etc. Numerical simulation research on sandstone compaction includes the following steps:

[0075] Step 1. Collect data: collect geological data, well logging data, seismic data and analysis test data; well logging data include neutron, density, acoustic time difference, natural gamma ray, resistivity, well logging interpretation porosity and well logging interpretation permeability Rate curve; analysis and test data includ...

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Abstract

The invention discloses a sandstone compaction effect numerical simulation method, and belongs to the technical field of oil and gas reservoir geology. The method includes: reproducing burial history and thermal history of sandstone at a target horizon based on data such as a top surface structure map, stratum thickness, stratum age, denudation thickness and lithologic ratio of all stratums to serve as a compaction effect numerical model; based on sedimentary microfacies plane distribution and single well lithofacies distribution, adopting a deterministic modeling method and a random modeling method to compile a 3D lithofacies model, and taking the 3D lithofacies model as an input parameter of a compaction effect numerical model; evaluating an intergranular volume-depth relation curve and the content of the pressure-soluble quartz cement by adopting quantitative statistical data of a casting body slice and a cathode luminescence slice as numerical simulation parameters of a mechanical compaction effect and a chemical compaction effect; on the basis, a compaction effect numerical simulation method is adopted to carry out compaction effect numerical simulation research, and a porosity high-value area in the 3D space is predicted.

Description

technical field [0001] The invention belongs to the technical field of oil and gas reservoir geology, and relates to a numerical simulation method for sandstone compaction. Background technique [0002] Research on sandstone compaction and porosity evolution currently mainly includes diagenetic numerical simulation methods, mathematical statistics methods, and inversion backstripping methods; among them, (1) diagenetic numerical simulation methods mainly consider diagenetic models, including burial depth-porosity, effective Stress-porosity Athy model, elastic porosity reduction-viscoplastic porosity reduction-cementation porosity reduction sandstone compaction ternary analytical porosity reduction model; ②Mathematical statistical analysis method is mainly to establish the experience of porosity and burial depth, burial time and temperature However, these empirical relationships seldom consider diagenesis; ③Using the principle of "inversion stripping", based on the analysis a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V11/00G06F30/20
CPCG01V11/00G06F30/20
Inventor 林承焰王文广黄导武张宪国段冬平黄鑫董春梅任丽华刘彬彬林建力
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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