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A Nucleus Capture Method for Reservoir Fluid Identification

A nuclei and fluid technology, applied in the field of nucleocapture method for identifying reservoir fluids, can solve the problems of relying on personal experience, low identification accuracy, slow calculation speed, etc., to avoid redundant calculation, strengthen generalization and robustness. Great, accurate results

Inactive Publication Date: 2017-12-12
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, aiming at the problems of too much reliance on personal experience, slow calculation speed, low recognition accuracy and easy over-fitting existing in the commonly used reservoir fluid identification methods, a method is proposed. Nucleus capture method to identify reservoir fluids for pattern recognition of data

Method used

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  • A Nucleus Capture Method for Reservoir Fluid Identification
  • A Nucleus Capture Method for Reservoir Fluid Identification
  • A Nucleus Capture Method for Reservoir Fluid Identification

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Embodiment Construction

[0029] The present invention is further described according to the embodiments in conjunction with the accompanying drawings.

[0030] The present invention is a nuclei capture method for identifying reservoir fluids, which converts the sample set to be tested into nuclei composed of several sample points with similar characteristics, and only needs to identify the category of each core to obtain all The class of samples to be tested.

[0031] Such as figure 1 , figure 2As shown, the present invention is a nuclear body capture method for identifying reservoir fluids, which is tested in an Ordovician carbonate formation in an oilfield, and the specific steps are as follows:

[0032] 1. Select the identification factor

[0033] Combining well logging, mud logging and geological data, determine the four types of target reservoirs as dry layer, oil layer, oil-water layer, and water layer, and select natural gamma ray (GR), spontaneous potential (SP), deep lateral Seven parame...

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Abstract

The invention relates to a nuclear body capture method for identifying reservoir fluids, which comprehensively utilizes a plurality of logging parameter data for fluid identification, and belongs to the field of petroleum and geology. The sample set to be tested is converted into a core body composed of several sample points with similar characteristics, and the category of all samples to be tested can be obtained only by identifying the category of each core. The method includes the following steps: (1) selecting identification factors; (2) data preprocessing; (3) constructing nuclei; (4) identifying types of nuclei; (5) identifying fluids in reservoir intervals. Fluid identification of complex reservoirs can be realized by using the above method. The algorithm of the invention is simple in operation, high in accuracy, strong in practicability, and has good popularization and application value.

Description

technical field [0001] The invention relates to a nuclear body capture method for identifying reservoir fluids, a well logging technology that comprehensively utilizes multiple logging parameter data for fluid identification to improve the identification accuracy of complex reservoir fluids, and belongs to the field of petroleum and geology. Background technique [0002] Reservoir fluid identification is an important part of logging interpretation, and is of great significance to reservoir evaluation and productivity prediction. At present, the exploration of reservoirs has extended from reservoirs with shallow burial, good physical properties, strong homogeneity, and regular distribution of lithology and fluid, such as simple clastic rock reservoirs, to deep burial, poor physical properties, and heterogeneous reservoirs. Complex reservoirs with strong properties, complex and changeable lithology and fluid distribution, such as tight clastic rock reservoirs, carbonate rock r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62
CPCG06V2201/06G06F18/24137
Inventor 赵军卢一凡杨阳张东川陈辉
Owner SOUTHWEST PETROLEUM UNIV
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