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Realization Method of Irregular Oil-Water Interface Modeling

A technology of oil-water interface and implementation method, which is applied in 3D modeling, image data processing, special data processing applications, etc., can solve the problems of mismatching interpretation conclusions, inaccurate models, and water in oil, etc., to achieve promotion and economy Significant benefits and simple operation

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, the oil-water interface using the same depth value in the modeling has great defects, so the established fluid model will have the phenomenon of water in the oil and oil in the water
The disadvantage of this is that not only the oil-water contact at the well point does not match the interpretation conclusion, but also the resulting model is not accurate enough

Method used

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  • Realization Method of Irregular Oil-Water Interface Modeling
  • Realization Method of Irregular Oil-Water Interface Modeling
  • Realization Method of Irregular Oil-Water Interface Modeling

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Embodiment Construction

[0025] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0026] Such as figure 1 as shown, figure 1 It is a flow chart of a specific embodiment of the method for realizing irregular oil-water interface modeling of the present invention.

[0027] In step 101, the depth of the oil-water contact encountered by the single well is determined according to the secondary interpretation results of the single well logging, and the spatial distribution of the oil-water contact in the oil-bearing area is preliminarily simulated according to the depth of the oil-water contact encountered by the single well. Specifically, firstly, according to the electrical logging curve of the completed well, combined with the rock-electricity oil-bearing classification standard of a single sand body, the oil-bearing interpretati...

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Abstract

The invention provides an irregular oil-water interface modeling implementation method. The method comprises the following steps: preliminarily simulating the space distribution of an oil-water interface of an oil-containing area; determining the fluctuation range of the oil-water interface according to the deepest and shallowest oil-water interface depths meeting during single-well drilling, and constraining the result of the last step by taking the oil-water interface fluctuation range as constrained control; determining a water-top interface of a pure water area according to the top surface structure of water sand; merging the oil-water interface of the oil-containing area and the interface of the pure water area to finally obtain an irregular oil-water interface of the whole area. According to the irregular oil-water interface modeling implementation method, the maximum coincidence between the oil-water interface of a well point and actual drilling is realized, the phenomenon that water exists in oil and oil exists in water appears on a single well when a unified oil-water interface is adopted is avoided; in addition, the irregular oil-water interface modeling implementation method is clear in technical concept and simple to operate, breaks through a method of a previous single oil-water interface and solves the problem that the irregular oil-water interface is not easily realized in a model.

Description

technical field [0001] The invention relates to the technical field of three-dimensional geological modeling of petroleum development geology, in particular to a method for realizing modeling of irregular oil-water interface. Background technique [0002] 3D geological modeling has now become a key link in the fine reservoir description of oil reservoirs in oilfield development. The determination of the oil-water interface is also an important content in the modeling process. [0003] The oil-water interface refers to the contact surface between oil and water. The oil-water interface is not strictly a horizontal plane, and generally shows three occurrences: horizontal, irregular, and inclined. The formation of irregular oil-water contact is mainly due to the fact that oil and gas have to overcome capillary pressure in the process of oil and gas migration and accumulation. Due to the heterogeneity of microscopic pore structure of reservoirs at the same depth, the capillary p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/05
Inventor 姜书荣杜玉山张海娜李健张强焦巧平刘丽杜建辉李竞好刘敏
Owner CHINA PETROLEUM & CHEM CORP
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