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Method and apparatus of determining injection loss of high-pressure mercury injection

A high-pressure, data-type technology, applied in earth-moving drilling, instrumentation, character and pattern recognition, etc., can solve the problems of fine reservoir pore structure, high-pressure mercury injection loss, etc.

Active Publication Date: 2017-08-11
PETROCHINA CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Once mercury injection loss occurs, the evaluation result of reservoir pore structure will be finer than the actual rock pore structure.
Unfortunately, there is no relevant research on the phenomenon of high-pressure mercury injection loss in the prior art.

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  • Method and apparatus of determining injection loss of high-pressure mercury injection
  • Method and apparatus of determining injection loss of high-pressure mercury injection
  • Method and apparatus of determining injection loss of high-pressure mercury injection

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Embodiment Construction

[0027] In order to make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the schematic embodiments and descriptions of the embodiments of the present application are used to explain the embodiments of the present application, but are not intended to limit the embodiments of the present application.

[0028] The specific implementation manners of the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0029] refer to figure 1 As shown, a method for judging the loss of high-pressure mercury injection proposed in the embodiment of the present application may include the following steps.

[0030] S101. Acquire the first permeability and first high-pressure mercury injection experiment data set ...

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Abstract

The invention provides a method and apparatus of determining injection loss of high-pressure mercury injection. The method of determining injection loss of high-pressure mercury injection includes the following steps: acquiring the first permeability and the first high-pressure mercury injection experimental data set of a plurality of rock cores in a research area; according to the first high-pressure mercury injection experimental data set and the first permeability, obtaining a relation set; according to the relation set, the first high-pressure mercury injection experimental data set and the first permeability, obtaining a threshold determination relation set; and obtaining the second permeability and the second high-pressure mercury injection experimental data set of the rock cores to be determined in the research area, and according to the second permeability, the second high-pressure mercury injection experimental data set and the threshold determination relation set, determining whether the rock cores to be determined have injection loss. The method and apparatus of determining injection loss of high-pressure mercury injection can determine whether injection loss occurs during the high-pressure mercury injection process.

Description

technical field [0001] The present application relates to the technical field of oil and gas exploration and development, in particular to a method and device for judging the loss of high-pressure mercury injection. Background technique [0002] The pore structure of the reservoir is one of the important petrophysical properties of the reservoir, which determines the distribution characteristics of oil, gas and water in the reservoir. Therefore, an objective understanding of the pore structure characteristics of reservoirs is very important for reservoir evaluation, oil and gas well productivity prediction, oil and gas layer stimulation and enhanced oil recovery. [0003] Mercury porosimetry is a commonly used method for quantitatively measuring reservoir pore structure characteristics. Mercury is a non-wetting phase for most rocks. When it enters the pores and throats, it needs an external force to overcome the capillary pressure. The greater the external force, the smalle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06Q50/02E21B49/00
CPCG06Q50/02E21B49/00G06F18/21G06F18/24
Inventor 王拥军童敏刘红岐田杰田泽普袁大伟
Owner PETROCHINA CO LTD
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