Method for measuring total porosity of shale

A technology of total porosity and measurement method, which is applied in the fields of mining exploration and development, petroleum, and geology. Porosity and other issues, to achieve the effect of easy operation, high measurement accuracy and low cost
CN103344541AInactive Publication Date: 2013-10-09CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (EAST CHINA)
Publication Date
2013-10-09
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a method for measuring total porosity of shale, belonging to the technical field of exploration and development of petroleum, geology and mining. According to method, the total porosity of the shale can be tested, and the defects in porosity measuring aspects of the shale by utilizing conventional methods such as gas absorption-desorption, nuclear magnetic resonance and high-pressure mercury penetration can be remedied. The method comprises the following steps of: (1) carrying out X-diffraction total rock analysis and X-diffraction clay mineral relative content and organic carbon content analysis on a shale sample, and determining the mass (m1, m2, m3...mn) of various components in a shale skeleton in unit mass M; (2) calculating the volumes (V1, V2, V3...Vn) of the various components in the shale skeleton in unit mass M according to the true densities (rhotrue1, rhotrue2, rhotrue3... rhotruen) of various minerals; (3) drying the shale sample, removing fluid component in the shale, and measuring the mass m of the shale by utilizing an electronic scale; (4) measuring the view volume Vview of the dried shale sample by utilizing an immersion method; and (5) calculating the total porosity phi of the shale. The method has the advantages that the total porosity of the shale can be accurately measured, the operation is simple, and the cost is low.
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Description

technical field

[0001] The invention relates to a method for measuring the total porosity of mud shale, belonging to the technical fields of petroleum, geology, and mining exploration and development. Background technique

[0002] In the process of exploration and development of shale oil and shale gas, the total porosity of shale reservoirs is one of the key parameters for calculating shale oil and shale gas resources and formulating development plans. The total porosity of shale oil and shale gas reservoirs directly affects the calculation of shale oil and shale gas resources, and is used to evaluate the production cycle of shale oil and shale gas development 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 shale oil and shale gas in these disconnected pores can be exploited after being communicated through fractured micro-fractures....

Claims

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