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Method and device for predicting abundance of organic matters in source rock

A technology of organic matter abundance and sandstone, applied in the field of oil and gas geophysical prospecting engineering, can solve the problem of physical meaning and reliability, cannot accurately identify and evaluate the distribution of high-quality reservoir source rocks in the high-porosity and permeability areas of source rock reservoirs, and the spatial location and Physical property parameter distribution and other issues, to achieve the effect of accurate identification and evaluation

Inactive Publication Date: 2019-03-22
PETROCHINA CO LTD
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Problems solved by technology

[0004] Although the existing methods for the abundance of organic matter in source rocks are widely used in actual production, their physical significance and reliability are often questioned by geologists and geophysicists due to the subjectivity of qualitative description and analysis. , cannot accurately identify and evaluate the distribution of high porosity and permeability areas in source rock reservoirs and predict the spatial location and physical parameter distribution of high-quality reservoir source rocks

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  • Method and device for predicting abundance of organic matters in source rock
  • Method and device for predicting abundance of organic matters in source rock

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Embodiment Construction

[0049] In the following description, for purposes of illustration rather than limitation, specific details such as specific system architectures, interfaces, and techniques are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0050] figure 1 It is a schematic flowchart of a method for predicting the abundance of organic matter in source rocks provided by the embodiment of the present invention. Such as figure 1 As shown, the method includes:

[0051] S1, obtaining the well logging curve of the target area;

[0052] S2, calculating the total organic carbon TOC value in the target area according to the well logging c...

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Abstract

The invention relates to a method and device for predicting the abundance of organic matters in a source rock. The method comprises the steps that a well logging curve of a target area is obtained; according to the well logging curve, a TOC value of the target area is calculated; according to the TOC value of the target area, well seismic calibration is carried out combined with the synthetic seismogram of the well logging curve; according to a result of the well seismic calibration, seismic attribution characteristics of the well bypass are extracted, and a relational expression between the TOC and seismic attribution characteristics is established; according to the relational expression, the spatial distribution of the target area TOC is established. The method for predicting the abundance of the organic matters in the source rock has the advantages that the distribution of high-porosity-and-permeability area of a source rock reservoir can be accurately identified and evaluated, andthe spatial position and physical property parameter distribution of the high-quality source rock reservoir are predicted.

Description

technical field [0001] The invention relates to the field of oil and gas geophysical prospecting engineering, in particular to a method and device for predicting the abundance of organic matter in source rocks. Background technique [0002] In the exploration and development of lacustrine sedimentary lithologic reservoirs, the spatial distribution description and quantitative evaluation of source rocks are very important, especially in the process of current oil and gas exploration from traditional structural reservoirs to subtle lithologic reservoirs. The requirements for identification and description accuracy of oil and gas channel source rocks are getting higher and higher. [0003] Existing prediction methods are mainly based on the analysis of testing and logging data, but there are few public reports on the qualitative description and analysis of organic matter abundance in source rocks using seismic attributes in 3D seismic data, especially for source rocks. Distrib...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/50G01V1/30
CPCG01V1/306G01V1/50G01V2210/624
Inventor 肖敦清姜文亚蒲秀刚王娜林常梅汪晓敏曲宁代昆
Owner PETROCHINA CO LTD
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