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Method and system for constructing hot dry rock mass thermal storage parameter model

A digital model and rock mass technology, which is applied in the field of building heat storage parameter models of dry hot rock mass, can solve the problems of evaluating the characteristics of high temperature and high pressure, igneous rock mass mineral properties, and dynamic acoustics of dry hot rock mass. , electrical characteristic analysis and other issues to achieve the effect of increasing reliability and accuracy, improving development efficiency, and improving accuracy

Pending Publication Date: 2020-12-11
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing rock evaluation model formulas in the petroleum field basically do not contain temperature and pressure coefficients, and direct copying cannot adapt to the high-temperature and high-pressure characteristics of hot dry rocks, especially high-temperature characteristics. According to existing literature, rock mineral properties, acoustic properties, etc. There will be significant changes. Therefore, the existing rock evaluation models in the petroleum field cannot be directly copied to special new energy fields such as hot dry rocks.
The traditional rock evaluation modeling method in the petroleum field has limitations because it does not consider the characteristics of high temperature and high pressure in the exploration and development of hot dry rock, and cannot accurately construct an evaluation model for hot dry rock mass
[0003] The existing technology mainly focuses on the model construction of sedimentary rocks in the oil and gas field, and does not consider the evaluation of the mineral property change characteristics of igneous rock mass (hot dry rock) under the coupled conditions of temperature field and pressure field, and does not use the dynamic acoustic analysis of hot dry rock. , electrical characteristics, thus affecting the authenticity and accuracy of the description of the hot dry rock state

Method used

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  • Method and system for constructing hot dry rock mass thermal storage parameter model
  • Method and system for constructing hot dry rock mass thermal storage parameter model

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Embodiment 1

[0027] figure 1 It is a step diagram of a method for constructing a heat storage parameter model of dry hot rock mass according to an embodiment of the present invention. Such as figure 1 As shown, the embodiment of the present invention realizes the construction process of the heat storage parameter model of the hot dry rock mass in the area to be studied through steps S110 to S130. First, step S110 selects a core sample of dry hot rock mass in the area to be studied, and analyzes the microscopic component characteristics of the sample. ) Mineral properties under pressure conditions change characteristics of mineral properties with changes in downhole temperature and / or downhole pressure. Then, step S120 uses image processing technology to establish a three-dimensional core digital model for the core sample, and combines the change characteristics of mineral properties corresponding to each microscopic mineral in the core sample obtained in step S110 with the corresponding ...

Embodiment 2

[0047] image 3 It is a schematic flowchart of an example of Step 3 of the method for constructing a heat storage parameter model of dry hot rock mass according to an embodiment of the present invention. Such as image 3 As shown, in the above step S130, it can also be completed in steps S301 to S307. First, step S301 acquires geophysical logging data of the area to be studied. Then use step S302 to judge whether the current well logging data includes the geophysical logging data data after the fracturing construction, if not included, it means that the current well logging data is the geophysical logging data data before the fracturing construction, according to the following The method described in step S303 determines the current static acoustic and electrical characteristics, and determines the current dynamic acoustic and electrical characteristics according to the method described in step S304 below.

[0048] Step S303 is the same as step S207 in the first embodiment ...

Embodiment 3

[0055] Based on the method for constructing the thermal storage parameter model of dry-hot rock mass in the present invention, the present invention also proposes a system for constructing the thermal storage parameter model of dry-hot rock mass. Figure 4 It is an overall structural diagram of a system for constructing a heat storage parameter model of dry hot rock mass according to an embodiment of the present invention. Such as Figure 4 As shown, the system of the present invention includes: a generation module 41 of characteristics of microscopic components, a generation module 42 of a digital representation model, and a generation module 43 of simulation results of heat storage parameters.

[0056] Among them, the micro-component characteristic relationship generation module 41 is implemented according to the method described in the above step S110, and is configured to select a core sample of dry-hot rock mass in the area to be studied, and analyze the micro-component c...

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Abstract

The invention discloses a method for constructing a hot dry rock mass thermal storage parameter model. The method comprises the following steps of selecting a hot dry rock mass rock core in a region to be researched, and analyzing microcosmic component characteristics of the rock core; establishing a mineral characteristic change characteristic for describing the change of the mineral characteristics of various microcosmic components along with the underground temperature and / or pressure under different underground temperature and pressure conditions; establishing a rock core digital model forthe rock core, and combining the mineral characteristic change characteristics with the rock core digital model to obtain a digital representation model containing the mineral characteristic change characteristic information of the hot dry rock mass in the to-be-studied area; and according to the digital representation model, simulating comprehensive state characteristics of the hot dry rock massunder different underground temperature and pressure conditions by adopting a numerical analysis method, and obtaining a model for describing hot storage parameters of the hot dry rock mass in combination with geophysical logging data. The method effectively improves precision of the hot dry rock thermal storage parameter model, and has characteristics of safety, environmental protection, high efficiency, high precision, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of hot dry rock exploration and development, in particular to a method and system for constructing a heat storage parameter model of dry hot rock mass. Background technique [0002] Hot dry rock has the characteristics of high temperature and high pressure, and its heat storage parameter modeling and evaluation is one of the key technologies for the exploration and development of hot dry rock. The existing rock evaluation model formulas in the petroleum field basically do not contain temperature and pressure coefficients, and direct copying cannot adapt to the high-temperature and high-pressure characteristics of hot dry rocks, especially high-temperature characteristics. According to existing literature, rock mineral properties, acoustic properties, etc. There will be significant changes. Therefore, the existing rock evaluation models in the petroleum field cannot be directly copied to special new energy fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G01V11/00
CPCG01V11/00
Inventor 谢关宝李永杰吴海燕
Owner CHINA PETROLEUM & CHEM CORP
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