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Method for measuring analcime in clastic rock

A determination method and clastic rock technology, which are applied in measurement devices, material analysis by optical means, instruments, etc., can solve the problem of discovering new oil fields, discussing reservoir properties, and inability to determine the lithology that affects the direction of oil exploration and development. , electrical properties, oil properties and physical properties

Active Publication Date: 2012-03-28
PETROCHINA CO LTD
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Problems solved by technology

[0004] Clastic rocks and carbonate rocks are fundamentally different rocks in nature. If the lithology is not accurately characterized, it is impossible to discuss the properties of the entire reservoir, and it is also impossible to determine the lithology, electrical properties, oiliness and physical properties. Therefore, it seriously affects the direction of oil exploration and development and the discovery of new oil fields

Method used

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Embodiment Construction

[0019] In order to understand the present invention in depth, the present invention will be described in detail below in conjunction with specific examples.

[0020] Taking the P2p1518.20m rock sample of Pingdiquan Formation P2p1518.20m in Well Huo11 of Zhundong Huoshaoshan Oilfield as a sample, the clastic rock was prepared by the method in the Petroleum and Natural Gas Industry Standard SY / T 5913-2004 of the People's Republic of China "Rock Slab Method" The rock thin section, adopt the following steps to measure the content of analcime in this rock thin section, concrete steps include:

[0021] Step 1: Insert the plaster test board at the corresponding position of the crossed polarizing microscope;

[0022] Step 2: Fix the rock thin section on the stage of the orthogonal polarizing microscope;

[0023] Step 3: Determination of the analcime content in the rock thin section.

[0024] Step 31: Use a low-magnification objective lens to conduct a preliminary measurement of the ...

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Abstract

The invention discloses a method for quickly and accurately measuring analcime in clastic rock under an orthogonal polarizing microscope, and belongs to the technical field of measurement methods. The method includes the preparation of rock flake in the clastic rock, and specifically has the following steps of inserting a gypse test plate in a corresponding position of the orthogonal polarizing microscope; fixing the rock flake on an objective table of the orthogonal polarizing microscope; and measuring the content of analcime in the rock flake. Through adopting the method, the analcime can be separated from quartz, feldspath and carbonate mineral under the orthogonal polarizing microscope, and the content of analcime in the clastic rock can be further measured, therefore, the utility value is realized.

Description

technical field [0001] The invention relates to the technical field of determination methods, in particular to a method for rapidly and accurately determining analcime in clastic rocks under an orthogonal polarizing microscope. Background technique [0002] Lithology is the basis for evaluating the relationship between electrical properties, oil content and physical properties of reservoirs. [0003] Under the crossed polarizing microscope, the interference color of analcime is total extinction, the interference color of quartz and feldspar is first-grade off-white, and the interference color of carbonate mineral is high-grade white. In view of this situation, the interference color of rock thin sections made of clastic rocks under the crossed polarizing microscope is usually high-grade white, so, usually, the content of carbonate minerals in which the interference color is high-grade white is very high , and the content of quartz, feldspar and analcime whose interference ...

Claims

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Application Information

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IPC IPC(8): G01N21/00
Inventor 张丽霞李培俊石彦李建良丁风玲
Owner PETROCHINA CO LTD
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