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Method for measuring total porosity of shale

A technology of total porosity and shale, applied in mining exploration and development, geology, and petroleum fields, to achieve the effect of low cost, simple operation and accurate measurement

Active Publication Date: 2013-04-03
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Through patent retrieval, Chinese patent, 201110155601 published invention patent application "shale porosity measurement method" (application publication number: CN 102252948A) has a major defect in principle: it is considered that the density of mud shale before and after crushing Same, with the crushed sample mass M 1 Density ρ before crushing b Calculate the volume before pulverization by the ratio of

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  • Method for measuring total porosity of shale

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Embodiment 1

[0024] Embodiment 1: Taking the method of measuring the total porosity of mud shale once as an example, the present invention is further described in detail.

[0025] refer to figure 2 . The circulating crushing device includes a first valve (1), a second valve (2), a third valve (3), an upper U-shaped glass tube A, a lower U-shaped glass tube D, a small pulverizer (B) and a small pump (C ). The model of small pulverizer B is ZM 200; the model of small pump C is WT3000-1JA.

[0026] The inner diameter of the upper U-shaped glass tube A and the lower U-shaped glass tube D is 40 mm. The U-shaped openings of the upper U-shaped glass tube A and the lower U-shaped glass tube D are opposite to each other; one port of the upper U-shaped glass tube (A) is connected with the discharge port of the small pulverizer (B) through a rubber hose, and the small pulverizer The feeding port of the machine (B) is connected with one port of the lower U-shaped glass tube D through a rubber hos...

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Abstract

The invention discloses a method for measuring the total porosity of shale, which is applied to laboratories for oil exploration, geological exploration and mineral exploration to perform a shale measurement. The method is characterized by comprising the following steps of: measuring the apparent volume of a shale sample; crushing the same sample used aforementioned to 100-200 meshes; performing drying treatment for 24-48 hours at 60-80 DEG C; performing cyclic crushing on the shale sample into fine particles which are 100-1000 nm in diameter by an auxiliary liquid, and measuring the volume of the consumed auxiliary liquid; and measuring the volume of the mixed liquid of the auxiliary liquid and the shale sample after the cyclic crushing, and calculating to obtain the total porosity of the shale sample. The method has the effects of being capable of measuring the total porosity of shale and high in measurement accuracy.

Description

technical field [0001] The invention relates to the technical fields of petroleum, geology, and mining exploration and development, in particular to a method for measuring mud shale in a laboratory, which is a method for measuring the total porosity of mud shale. Background technique [0002] In the process of exploration and development of shale oil and gas, total porosity is one of the key parameters for calculating shale oil and shale gas resources and making development plans. The total porosity of shale oil and shale gas reservoirs directly affects the resources of shale oil and shale gas, and is used to evaluate the production cycle of shale oil and shale gas wells. The source rock and reservoir of shale oil and shale gas are the same set of mud shale, and a considerable part of the pores in mud shale are disconnected, that is, "dead pores". The oil and gas stored in these disconnected pores can be exploited after fracturing, so it is necessary to measure the total po...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 陈方文卢双舫薛海涛李吉君王民黄文彪王伟明肖佃师
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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