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Method and system for predicting hydrocarbon source rock distribution

A prediction method and distribution prediction technology, applied in the field of oil and gas geological exploration, can solve the problems of high cost of the prediction method, inapplicability to new exploration areas, etc.

Pending Publication Date: 2022-03-25
CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD +2
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method and system for predicting the distribution of source rocks, which can simulate the deposition process of granular organic matter in the delta sedimentary system from the perspective of forward modeling, so as to solve the problems of high cost and inapplicability of the existing prediction methods in new exploration areas. defect

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  • Method and system for predicting hydrocarbon source rock distribution
  • Method and system for predicting hydrocarbon source rock distribution
  • Method and system for predicting hydrocarbon source rock distribution

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Embodiment 1

[0038] The purpose of this embodiment is to provide a method for predicting the distribution of source rocks, by simulating the deposition and accumulation of particulate organic matter in a delta sedimentary system through a simulation experiment, and analyzing and processing the sedimentary bodies generated by the experiment to establish a prediction model for the distribution of source rocks, This prediction method uses forward modeling to simulate the depositional distribution characteristics of source rocks in the delta depositional system on the plane and profile, which can accurately and efficiently clarify the distribution law of source rocks in the delta depositional system, guide oil and gas exploration, and solve the difficulties in existing technologies. To achieve the organic combination of the plane distribution and profile distribution of source rocks in the delta depositional system, the problem of low accuracy of prediction of the spatial distribution of source ...

Embodiment 2

[0098] This embodiment is used to provide a prediction system for source rock distribution, such as Figure 13 As shown, the forecasting system includes:

[0099] The geological background acquisition module M1 is used to acquire the geological background of the target study area; the geological background includes the delta sedimentary characteristics, the paleo-sedimentary environment of the study area and the basic characteristics of source rocks;

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Abstract

The invention discloses a hydrocarbon source rock distribution prediction method and system, relates to the technical field of oil and gas geological exploration, and aims at solving the problems that an existing prediction method is high in cost and not suitable for a new exploration area and a few-well exploration area. The prediction method provided by the invention comprises the following steps: firstly, obtaining a geological background of a target research area to determine an experiment condition; and carrying out a delta deposition system organic matter deposition simulation experiment on the basis of experiment conditions to obtain a sedimentary body. Finally, the sedimentary body is processed, a hydrocarbon source rock distribution prediction model is established, hydrocarbon source rock distribution is determined through the hydrocarbon source rock distribution prediction model, then the deposition process of particulate organic matter in the delta sedimentary system is simulated from the forward modeling angle, the aggregation rule of hydrocarbon source rocks is summarized, the cost of hydrocarbon source rock distribution prediction is greatly reduced, and the prediction accuracy is improved. And the method has a wide application prospect especially for a new exploratory area with a small number of drilled wells. The prediction method and system provided by the invention are used for predicting the distribution of the hydrocarbon source rocks.

Description

technical field [0001] The invention relates to the technical field of oil and gas geological exploration, in particular to a method and system for predicting the distribution of hydrocarbon source rocks. Background technique [0002] With the increasing demand for oil and gas resources, the situation of oil and gas resources in short supply is becoming more and more severe. Since 2018, my country's foreign dependence on crude oil has exceeded 70%. The realization of new discoveries of oil and gas resources and new growth of resource reserves has important practical and strategic significance for building a resource base for energy security. However, there is oil only when there is a source. As the most important hydrocarbon-generating parent material, the type, thickness and distribution of source rocks determine the type, enrichment degree and distribution characteristics of oil and gas resources. Since the 1960s, my country's oil and gas exploration practice has fully pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/04
CPCG01N15/04
Inventor 李威李阳徐耀辉李友川刘忠保吕奇奇
Owner CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD
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