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A target-based optimization method for paleo-underground river reservoir models

An optimization method and reservoir technology, applied in the field of carbonate reservoir development geology, can solve problems such as the numerical simulation of ancient underground river reservoir models and the large influence of development plan adjustments

Active Publication Date: 2021-10-08
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The discontinuity of the ancient underground river reservoir model obtained by this single-attribute truncation method has a great influence on the subsequent numerical simulation and development plan adjustment

Method used

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  • A target-based optimization method for paleo-underground river reservoir models
  • A target-based optimization method for paleo-underground river reservoir models
  • A target-based optimization method for paleo-underground river reservoir models

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with accompanying drawing.

[0037] Such as figure 1 As shown, the present invention provides a target-based optimization method for the ancient underground river reservoir model, which optimizes the ancient underground river reservoir model based on the combination of static data and dynamic data, so as to establish a model that is more in line with geological reality and meets the needs of reservoirs. The high-precision 3D geological model required for accurate calculation of numerical simulation.

[0038] The static data in the present invention include seismic data bodies and geological development laws, and the dynamic data include tracer concentration curves. Wherein, the seismic data volume includes root mean square amplitude and wave impedance.

[0039] In one embodiment, the method of the present invention comprises the following steps:

[0040] Step 1: Obtain an initial model of the three-...

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Abstract

The invention relates to a target-based optimization method for an ancient underground river reservoir model, relates to the technical field of carbonate reservoir development geology, and is used to solve the ancient underground river reservoir model obtained by the single-attribute truncation method existing in the prior art Discontinuous technical problems. The object-based optimization method of the ancient underground river reservoir model of the present invention optimizes the initial model of the three-dimensional spatial distribution of the ancient underground river reservoir according to the combination of static data and dynamic data, so that the connectivity of the dynamic data and the accuracy of the static data Consistent with the continuity, a three-dimensional geological model with continuous distribution in space is obtained, which conforms to both geological laws and dynamic characteristics.

Description

technical field [0001] The invention relates to the technical field of carbonate oil reservoir development geology, in particular to an object-based optimization method for an ancient underground river reservoir model. Background technique [0002] Paleo-underground river is an important reservoir type of fractured-vuggy oil reservoir, and it is the main contributor to the production of Tahe Oilfield. The 3D geological model is the key to geological research of oilfield development. [0003] Early modeling methods for paleo-underground river reservoirs were mainly carried out based on the cave as a whole, and the method was mainly truncated by using seismic attributes that can reflect the characteristics of the cave. This method can reflect the spatial distribution characteristics of isolated caves to a certain extent. But there are big problems for the ancient underground river reservoirs, because the ancient underground rivers are near-banded reservoirs with good continu...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 李永强孙建芳魏荷花吕心瑞李红凯肖凤英卜翠萍
Owner CHINA PETROLEUM & CHEM CORP
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