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Core porosity measurement method and device

A porosity and core technology, applied in the field of measurement, can solve the problems that the total volume of rock samples cannot be accurately measured, and the porosity of such rock sections cannot be accurately measured.

Active Publication Date: 2017-01-11
PETROCHINA CO LTD
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  • Abstract
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Problems solved by technology

Therefore, existing measurement methods cannot accurately measure the total volume of rock samples in these reservoir sections, and thus cannot accurately measure the porosity of such rock sections

Method used

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  • Core porosity measurement method and device
  • Core porosity measurement method and device
  • Core porosity measurement method and device

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Embodiment Construction

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0052] figure 1 It is a schematic flowchart of the method for measuring the core porosity provided by Embodiment 1 of the present invention. Such as figure 1 As shown, the core porosity measurement method provided in this embodiment specifically includes the following steps:

[0053] S101. After wrapping the outer surface of the rock sampl...

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Abstract

The invention provides a core porosity measurement method and a core porosity measurement device. The core porosity measurement method provided by the invention comprises the following steps: after the outer surface of a rock sample is covered with a gel coat, placing the rock sample covered with the gel coat into first liquid, and obtaining the volume of the rock sample; measuring the pore volume of the rock sample; and obtaining the porosity of the rock sample according to the volume of the rock sample and the particle volume of the rock sample. The core porosity measurement method can accurately measure the core porosity of the rock sample when multiple fractures are formed in the surface of the rock sample and the heterogeneity is relatively high.

Description

technical field [0001] The invention relates to measurement technology, in particular to a method and device for measuring rock core porosity. Background technique [0002] Rock porosity is the most basic petrophysical parameter for oilfield exploration and development. It is the physical property boundary for understanding oil and gas storage conditions in oil and gas layers, dividing main layers, effective reservoirs and interlayers, and is indispensable for evaluating reservoirs and calculating oil and gas reserves. one of the parameters. The determination of rock porosity requires the determination or calculation of parameters such as the total volume and void volume of the rock sample. [0003] The existing porosity measurement methods mainly include the following: one is the liquid saturated porosity measurement method, the theoretical basis of this measurement method is Archimedes’ law, after the rock sample is saturated with a liquid of known density, the saturated ...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 姜晨光王小强郑威周国源杨启林肖克
Owner PETROCHINA CO LTD
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