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Method for quickly identifying favorable interval of shale oil based on rock pyrolysis parameters

A shale oil and pyrolysis technology, which is used in material thermal analysis, material analysis by optical means, and measurement devices, etc., can solve the problems of long cycle, poor application effect of shale oil resource potential, and high cost, and achieves universal The effect of reference value

Active Publication Date: 2021-05-28
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

[0004] The present invention provides a method for quickly identifying favorable intervals of shale oil based on rock pyrolysis parameters, so as to solve the problem of poor application effect of oil saturation index in the evaluation of my country's shale oil resource potential in the prior art and the use of hydrocarbon generation simulation experiments. Shale oil-bearing evaluation leads to high cost and long cycle

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  • Method for quickly identifying favorable interval of shale oil based on rock pyrolysis parameters
  • Method for quickly identifying favorable interval of shale oil based on rock pyrolysis parameters
  • Method for quickly identifying favorable interval of shale oil based on rock pyrolysis parameters

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[0062] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0063] Such as Figure 1-10 As shown, the embodiment of the present invention provides a method for quickly identifying favorable intervals of shale oil based on rock pyrolysis parameters, and the method includes the following steps:

[0064] S 1 : Obtain shale samples from shale formations, and conduct rock pyrolysis analysis and total organic carbon determination respectively;

[0065] It should be noted that the shale oil resources in my country mainly occur in lacustrine shale formations. Therefore, the shale samples obtained in this example come from lacustrine shale formations, which are different from marine shale formations.

[0066] S 2 : Rock-Eval method is used to obtain the first organic geochemical parameters of shale forma...

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Abstract

The invention provides a method for quickly identifying a favorable interval of shale oil based on rock pyrolysis parameters. The method comprises the steps of acquiring a shale sample of a shale stratum, and respectively carrying out rock pyrolysis analysis and total organic carbon content measurement; acquiring a first organic geochemical parameter of the shale formation by adopting a rock pyrolysis analysis measurement method; determining the organic matter maturity and the organic matter type of the shale sample according to the highest pyrolysis peak temperature or the highest pyrolysis peak temperature and hydrogen index plate; solving the hydrocarbon expulsion amount; dividing the shale into an E type, an M type and an R type on the basis of the hydrocarbon expulsion amount in the unit mass of the low-maturity-maturity sample; and determining a favorable interval of the shale oil by combining analysis and description of different types of shale. According to the method, a new index for representing the hydrocarbon expulsion amount of the shale is established, the shale oiliness is predicted, and then the favorable interval of shale oil exploration is determined.

Description

technical field [0001] The invention relates to the technical field of unconventional shale oil exploration and development, in particular to a method for quickly identifying favorable intervals of shale oil based on rock pyrolysis parameters. Background technique [0002] The oil-bearing property of shale is one of the basic parameters to understand the potential of shale oil resources, and it is also the key to in-depth study of the enrichment mechanism of shale oil. Under the limitation of current technical conditions, the recoverable target of shale oil is mainly free oil rather than adsorbed oil. Therefore, predicting and evaluating shale oil-bearing properties is an important and difficult point in shale oil exploration. [0003] At present, in domestic and foreign shale oil exploration, the oil saturation index (S 1 / TOC×100) to evaluate the resource potential of shale oil, and North American shale oil exploration practice has also confirmed that the higher the oil ...

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Application Information

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IPC IPC(8): G01N25/00G01N21/3504
CPCG01N25/00G01N21/3504
Inventor 李琪琪徐尚郝芳
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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