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Carbonatite oil-gas exploration method and device

A carbonate rock, oil and gas technology, applied in the field of oil exploration, can solve problems that have not been raised

Active Publication Date: 2016-04-20
PETROCHINA CO LTD
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Problems solved by technology

[0004] As for how to determine the impact of gas invasion on oil and gas reservoirs, no effective solution has been proposed so far

Method used

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  • Carbonatite oil-gas exploration method and device
  • Carbonatite oil-gas exploration method and device

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0025] Considering that there is no research defect about the impact of gas invasion on oil and gas reservoirs in the prior art, the inventors conducted a comprehensive study on the petroleum geology of oil and gas reservoirs in various phases in the work area, and obtained the gas invasion of the oil and gas reservoirs in the work area by fitting. The fitting relationship between the degree and the evaluation parameters can guide the exploration and development.

[0026] Specifically, in this example, a carbonate oil and gas exploration method is provided, such as figure 1 As shown, the follo...

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Abstract

The invention provides a carbonatite oil-gas exploration method and a carbonatite oil-gas exploration device. The carbonatite oil-gas exploration method comprises the steps of: acquiring evaluation parameters of oil and gas reservoirs at a plurality of sampling points in a work area; acquiring a fitting relation between a gas cut degree and the evaluation parameters of the oil and gas reservoirs in the work area according to the evaluation parameters of the oil and gas reservoirs; and predicting oil and gas reservoirs in the work area according to the fitting relation, and guiding oil-gas exploration. According to the carbonatite oil-gas exploration method and the carbonatite oil-gas exploration device, petroleum geology of the oil and gas reservoirs of various phase states in the work area is studied comprehensive, the evaluation parameters of the oil and gas reservoirs at the plurality of sampling points are obtained, and the fitting relation between the gas cut degree and the evaluation parameters of the oil and gas reservoirs in the work area is obtained through fitting, thereby solving the problems of inaccurate oil-gas prediction and low exploration efficiency because the influence of gas cut on oil and gas reservoirs cannot be analyzed quantitatively in the prior art, and achieving the purpose of quantitatively analyzing the influence of gas cut on oil and gas reservoirs.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, in particular to a carbonate rock oil and gas exploration method and device. Background technique [0002] With the rapid development of the petroleum industry, the field of petroleum and natural gas exploration continues to expand, and a large number of carbonate rock reservoirs have been discovered. According to incomplete statistics, the distribution area of ​​carbonate rocks accounts for 20% of the total area of ​​sedimentary rocks in the world, and its oil and gas reserves account for 52% of the world's total reserves. [0003] However, marine carbonate basins in China have all undergone multiple cycles of superimposition and transformation, and the distribution of oil and gas is extremely complex. The source of natural gas is charged and reformed early reservoirs along faults and unconformities, forming complex oil and gas phases, including condensate gas reservoirs formed by...

Claims

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Application Information

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IPC IPC(8): G01V9/00
CPCG01V9/00
Inventor 朱光有
Owner PETROCHINA CO LTD
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