Quantitative evaluation method for hydrocarbon generation quantity, hydrocarbon expulsion quantity and hydrocarbon retention quantity of source rock
A quantitative evaluation and source rock technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem of inability to accurately and quantitatively evaluate the hydrocarbon generation, hydrocarbon expulsion and retention of source rocks.
Active Publication Date: 2016-05-11
PETROCHINA CO LTD
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[0007] In order to overcome the above-mentioned defects, the object of the present invention is to provide a method and device for quantitatively evaluating the amount of hydrocarbon generation, expulsion, and rete
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Embodiment 1
[0047] This embodiment provides a quantitative evaluation method for the amount of hydrocarbon generated, discharged, and retained in source rocks ( figure 1 The flow chart for quantitative evaluation of this embodiment), the method includes:
[0048] Step S101: Obtain the TOC of the source rock sample of the target layer in the study area.
[0049] The target layer sample in the study area is the outcrop source rock of the Lucaogou Formation in the Junggar Basin. The rock sample is obtained with a borehole depth of less than 5 meters to ensure that the sample is not weathered. The sample is 30kg, crushed into 60 mesh, and mixed evenly, divided into 8 parts. One part measured the original TOC to be 4.85 wt%. TOC is measured according to the national standard of "Determination of Total Organic Carbon in Sedimentary Rocks" GB / T19145-2003.
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The invention provides a quantitative evaluation method for hydrocarbon generation quantity, hydrocarbon expulsion quantity and hydrocarbon retention quantity of source rock. The quantitative evaluation method comprises the following steps that TOC (Total Organic Carbon) of a source rock sample of a research region target layer is acquired; thermal simulation experiments are performed on the source rock sample of the research region target layer; the thermal simulation experiments are a set of semi-opened system simulation experiments of hydrocarbon generation and expulsion with different preset temperatures; the preset temperatures are temperature rising end points of the simulation experiments of the hydrocarbon generation and expulsion; a first parameter at different preset temperature is acquired according to the result of each semi-opened system simulation experiment of the hydrocarbon generation and expulsion; a first model and a second model are built according to the TOC of the source rock sample and the first parameter; the hydrocarbon generation quantity, the hydrocarbon expulsion quantity and the hydrocarbon retention quantity of the source rock are quantitatively evaluated by means of combining the first model and the second model.
Description
Technical field [0001] The invention belongs to the technical field of shale oil and gas exploration and development, and oil and gas resource evaluation, and specifically relates to a quantitative evaluation method for the amount of hydrocarbon generated, discharged and retained in a source rock. Background technique [0002] Judging from the evaluation results of oil and gas resources in the world and my country, with the increase in oil and gas exploration and discoveries, the evaluation results of oil and gas resources have changed greatly. For example, the amount of conventional oil resources in my country was 23.1 billion tons in 1977 and 108.5 billion tons in 2007. . With the development of oil and gas exploration and development from conventional reservoirs to unconventional oil and gas, shale oil and gas and tight oil and gas have gradually become important areas of oil and gas exploration and development, but it is difficult to estimate the amount of shale oil and gas an...
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CPCG01N33/241
Inventor 侯连华罗霞王京红赵忠英韩文学
Owner PETROCHINA CO LTD
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