Zone-dividing saturation simulation method

A technology of saturation and zoning, which is applied in the direction of earthwork drilling and production, wellbore/well components, etc., can solve the problems that the transition zone saturation change cannot be considered, the saturation model is not accurate enough, etc., and it is conducive to popularization, good operability, apply simple effects

Inactive Publication Date: 2014-12-03
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0005] The present invention provides a method for simulating saturation by using subregions in three-dimensional geological modeling, which solves the problem that the saturation model cannot be considered inaccurately due to the saturation change in the transition zone in the saturation model, and realizes the purpose of fine simulation of the saturation model

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  • Zone-dividing saturation simulation method

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[0049] 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.

[0050] Such as figure 1 as shown, figure 1 It is a flow chart of a specific embodiment of the method for simulating saturation in different bands according to the present invention.

[0051] In step 101, based on the secondary interpretation result of the single well logging, the saturation value of the oil layer interval is extracted, and only the saturation of the oil layer is simulated by using cut-off control. Specifically, first construct a saturation curve Sw1 of the oil layer according to the saturation result of the well point interpretation, and then simulate Sw1, that is, only simulate the saturation of the oil layer, so that when simulating the saturation of the oil layer, the oil layer saturation can be determined through geological ...

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Abstract

The invention provides a zone-dividing saturation simulation method. The zone-dividing saturation simulation method comprises the following steps: 1, extracting an oil reservoir segment saturation value according to a single well-logging secondary interpretation result, and only simulating the saturation of an oil reservoir by applying cutoff control; 2, on the basis of oil-water interface analysis, determining the range of an outer oil-water interface sand body, and setting water saturation to be 100 percent; 3, on the basis of determining a transition zone sand body, simulating transition zone saturation by using a J function as an assisting constraint condition; 4, calculating and integrating three simulation results to obtain a zone-dividing fine simulation saturation model. By adopting the zone-dividing saturation simulation method, fine simulation of the saturation is realized, and more accurate parameters are provided for reserve calculation. The zone-dividing saturation simulation method is clear in thought and is easy to apply, the conventional oil-water hybrid simulation method of a saturation model is broken through, and reliable parameters are provided for reserve calculation and numerical reservoir simulation.

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 simulating by zones to achieve a fine description of the saturation of each zone. Background technique [0002] Reservoir fine geological modeling has now become a key link in the fine reservoir description of oil reservoirs in oilfield development. Through 3D modeling, "3D digital reservoirs" can be established for reservoir engineering technicians to carry out reservoir numerical simulation, Researches such as development adjustment and tracking can finally achieve the purpose of improving reservoir development effect and enhancing reservoir recovery. [0003] The saturation parameter is a key parameter in the three-dimensional property model, which has a great influence on the calculation of reserves and numerical simulation. Previous saturation simulations generally did not consider the change of the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
Inventor 张海娜姜书荣杜玉山田同辉李健史军焦巧平聂鑫刘丽彭道贵
Owner CHINA PETROLEUM & CHEM CORP
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