Method and device for determining content of organic carbon in hydrocarbon source rock

A method for determining organic carbon, which is applied in the direction of material inspection, soil material testing, etc., can solve the problems of calculation result error, inaccurate organic carbon content, inaccurate calculation of organic carbon content, etc., to achieve accurate calculation results, obvious The effect of the actual application effect

Active Publication Date: 2014-05-14
PETROCHINA CO LTD
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Problems solved by technology

[0005] The above ΔlgR method is a theoretical-empirical formula proposed in the early research on hydrocarbon generation of source rocks, and it has certain limitations: when the kerogen maturity of source rocks is in the immature-high mature stage, the ΔlgR method can obtain more accurate However, when the kerogen maturity of source rocks is in the high-to-high matur

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  • Method and device for determining content of organic carbon in hydrocarbon source rock
  • Method and device for determining content of organic carbon in hydrocarbon source rock
  • Method and device for determining content of organic carbon in hydrocarbon source rock

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[0042] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] figure 1 It is a flow chart of the method for determining the organic carbon content of the present application. Such as figure 1 As shown, the methods for determining the organic carbon content of source rocks include:

[0044] S1: Experimentally measure the organic carbon content of source rock cores;

[0045]S2: Obtain the...

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Abstract

The invention provides a method for determining the content of organic carbon in hydrocarbon source rock. The method comprises the following steps: S1. experimentally measuring the content of organic carbon of a hydrocarbon source rock core; S2. acquiring the log values of uranium content, resistivity, compensated sonic time difference and compensated density in logging curves at rock core depths; S3. calculating delta lgR according to the log values of S2; S4. establishing the correspondence relation between the content value of organic carbon and the delta IgR as well as uranium log value according to the results of S1 to S3, and fitting into a function; S5. according to the fitted function, determining the content of organic carbon of hydrocarbon source rock at all positions of a log. The invention provides a device embodiment for determining the content of organic carbon in hydrocarbon source rock. According to the method and the device for determining the content of organic carbon in hydrocarbon source rock, the content of organic carbon is determined based on combination of uranium logging curves and delta lgR, the accuracy of the calculation results is high, and the method and the device have obviously practically application effects in the calculation on the content of organic carbon in the hydrocarbon source rock.

Description

technical field [0001] The invention relates to the field of tight sandstone oil and gas well logging, in particular to a method and device for determining the organic carbon content of source rocks. Background technique [0002] With the continuous improvement of conventional oil and gas exploration and development, the field of oil and gas exploration and development has leaped from conventional oil and gas to unconventional oil and gas. As an important part of unconventional oil and gas, tight oil and gas has become the first choice for unconventional oil and gas exploration in China in the near future. Tight sandstone gas refers to the sandstone gas whose overburden matrix permeability is less than or equal to 0.1 md (million darcy); tight oil is the abbreviation of tight reservoir oil, which means that the overburden matrix permeability is less than or equal to 0.1 md. West (md, million darcy) sandstone, limestone and other oil reservoirs. Tight oil includes tight san...

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Application Information

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IPC IPC(8): G01N33/24
Inventor 李长喜李华阳李潮流胡法龙王昌学
Owner PETROCHINA CO LTD
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