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Method and device for determining rock modality

A rock and modal technology, applied in the field of determining rock modes, can solve problems such as the inability to effectively identify pore structure modes of conglomerate reservoirs

Active Publication Date: 2021-09-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a method and device for determining the rock mode, so as to at least solve the technical problem that the identification method of the pore structure mode of the conglomerate reservoir in the prior art cannot effectively identify the pore structure mode of the conglomerate reservoir

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  • Method and device for determining rock modality

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Embodiment 1

[0029] According to an embodiment of the present invention, an embodiment of a method for determining a rock mode is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0030] figure 1 is a flow chart of a method for determining the rock mode according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0031] Step S102, obtaining the preset modal parameters of the microscopic pore structure of the conglomerate reservoir and the rock pore structure parameters of typical core rock samples, wherein the above preset modal parameters are pre-assumed for different types of rock modes;

[0032] Step S104: Determin...

Embodiment 2

[0066] According to an embodiment of the present invention, an embodiment of a device for implementing the method for determining the rock mode described above is also provided, image 3 is a structural schematic diagram of a device for determining rock modes according to an embodiment of the present invention, such as image 3 As shown, the above-mentioned device for determining the rock mode includes: an acquisition module 20, a first determination module 22, a calculation module 24 and a second determination module 26, wherein:

[0067]The obtaining module 20 is used to obtain the preset modal parameters of the microscopic pore structure of conglomerate reservoirs and the rock pore structure parameters of typical core rock samples, wherein the above-mentioned preset modal parameters are obtained in advance for different types of rock modal assumptions The first determination module 22 is used to determine the target pore structure parameters related to the preset modal para...

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Abstract

The invention discloses a method and a device for determining a rock modality. The method comprises the steps of: acquiring preset modal parameters of a conglomerate reservoir micro-pore structure and rock pore structure parameters of a typical core rock sample, wherein the preset modal parameters are obtained according to different types of rock modal assumptions in advance; according to a preset correlation, determining target pore structure parameters related to the preset modal parameters, wherein the preset correlation is used for reflecting correlation between the preset modal parameters and the rock pore structure parameters; performing multiple linear regression calculation on the target pore structure parameters and the preset modal parameters to obtain a multiple linear regression equation; and on the basis of the regression result of the multiple linear regression equation, determining the rock modality of the conglomerate reservoir microcosmic pore structure, wherein the rock modality comprises one of a single modality, a double modality and a complex modality. The technical problem that the conglomerate reservoir pore structure modality identification method in the prior art cannot effectively identify the conglomerate reservoir pore structure modality is solved.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a method and a device for determining rock modes. Background technique [0002] In this technical field, the rock mode of conglomerate reservoirs is closely related to the physical parameters and lithological characteristics of the reservoir. The study of the rock mode of the reservoir is of great significance to improve the oil displacement effect, understand the distribution of remaining oil and adjust the development dynamics. [0003] For the identification of the pore structure modes of conglomerate reservoirs, Yin Linlin et al. analyzed and studied the pore structure modes of glutenite by using casting thin sections, nuclear magnetic resonance and CT scanning techniques, and concluded that the single-mode rock pore-throat distribution is uniform, and the pores The size of the throat is relatively concentrated, and the pore throat is relatively coarse. The po...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/088
Inventor 吕建荣张朝良刘文涛谭龙张德富张菁聂振荣
Owner PETROCHINA CO LTD
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