A Characterization Method of Oil and Gas Enrichment Degree

A kind of oil and gas, degree of technology, applied in the field of oil and gas exploration, can solve the problems of large error and inability to characterize the degree of oil and gas enrichment of a single well, etc., and achieve the effect of wide application range, simple and easy operation process, and accurate calculation results

Active Publication Date: 2021-06-01
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0003] At present, most of the existing characterization methods for the degree of oil and gas enrichment start from a macro perspective, and indirectly characterize the degree of oil and gas enrichment by establishing the relationship between the reserves of a certain block and a certain accumulation factor. The error is large, and it is impossible to characterize the oil and gas enrichment degree of a certain section of a single well

Method used

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  • A Characterization Method of Oil and Gas Enrichment Degree
  • A Characterization Method of Oil and Gas Enrichment Degree
  • A Characterization Method of Oil and Gas Enrichment Degree

Examples

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Embodiment 1

[0049] To characterize the oil and gas enrichment degree of wells with unknown reserves in the Longfengshan area includes the following steps:

[0050] (1) Based on the mud logging data, well logging data and oil testing data of 16 wells with known reserves in the Longfengshan-Dongling area, determine the oil and gas show levels contained in different intervals in the known reserves wells mentioned in each data , and use the above assignment table (Table 1) to assign values ​​to various oil and gas indication levels. Take the K of SN108 well 1 yc 3 Taking the horizon as an example, the levels of oil and gas shows contained in this interval and their assignment results are shown in Table 2.

[0051] Table 2 K of well SN108 1 yc 3 Statistical table of each parameter of layer

[0052]

[0053] (2) Calculate the total thickness corresponding to each oil and gas show level in each well and interval in each data, and count the total sandstone thickness of each interval in un...

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Abstract

The invention provides a method for characterizing the enrichment degree of oil and gas, belonging to the technical field of oil and gas exploration, and can characterize the enrichment degree of oil and gas in each section of a single well. The method for characterizing the degree of oil and gas enrichment includes the following steps: according to the logging data, logging data and oil testing data of a plurality of wells with known reserves, respectively determine the oil and gas manifestations contained in different layers in the known wells in each data. The total thickness corresponding to each oil and gas display level and the total sandstone thickness of each interval in each well and each interval in each data are calculated separately, and then the effective value of oil and gas accumulation of each data is calculated for each interval. ; Linearly fit the relationship between the reserves abundance corresponding to each interval of the known well and the effective value of oil and gas accumulation of the three kinds of data, as an evaluation formula; use the evaluation formula to calculate the predicted reserves abundance corresponding to each interval of the unknown reserves well.

Description

technical field [0001] The invention belongs to the technical field of oil and gas exploration, in particular to a characterization method for oil and gas enrichment degree. Background technique [0002] Exploration results show that the degree of oil and gas enrichment in different basins or sags is quite different. At the same time, there are also obvious differences in the degree of oil and gas enrichment and enrichment intervals in different structural belts and different well positions in the same area. Therefore, to determine the oil and gas The degree of enrichment is of great significance for evaluating the potential of oil and gas resources and guiding well exploration and deployment. [0003] At present, most of the existing characterization methods for the degree of oil and gas enrichment start from a macro perspective, and indirectly characterize the degree of oil and gas enrichment by establishing the relationship between the reserves of a certain block and a ce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/0639G06Q50/02
Inventor 蒋有录范婕刘景东林彧涵苏圣民
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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