Improved oil and gas reservoir efficient automatic history fitting method

A technology of history matching and oil and gas reservoirs, applied in the field of improved efficient automatic history matching of oil and gas reservoirs, can solve the problems of high time-consuming, achieve the effect of solving high time-consuming and improving efficiency

Active Publication Date: 2021-10-08
SHANDONG UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide an efficient automatic history method for oil and gas reservoirs considering single-phase unstable seepage by combining the fast marching method and the differential evolution algorithm, so as to solve the problem of high time-consuming automatic history fitting process relying on conventional numerical simulation

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  • Improved oil and gas reservoir efficient automatic history fitting method
  • Improved oil and gas reservoir efficient automatic history fitting method
  • Improved oil and gas reservoir efficient automatic history fitting method

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[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

[0036] In the process of history matching, different parameters in the oil and gas reservoir have their own adjustable ranges. Some parameters are generally not adjusted, while some parameters can be adjusted in a small range, and some parameters can be adjusted in a large range. Range adjustment. Therefore, the selection of parameters sometimes determines whether the desired fitting results can be obtained. The production performance data of oil and gas reservoirs are usually used as the fitting object. Parameters with...

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Abstract

The invention discloses an improved oil and gas reservoir efficient automatic history fitting method, which comprises the following steps: S1, acquiring well point hard data, processing the well point hard data to obtain a plurality of prior geologic models, and regarding the plurality of prior geologic models as a set; and S2, performing fitting calculation by using a fast marching method and a differential evolution algorithm based on the prior geologic model. According to the technology, a high-efficiency automatic historical method is provided for the oil and gas reservoir considering single-phase unstable seepage by combining a fast marching method and a differential evolution algorithm, the minimum value of the target function can be quickly converged, so that automatic historical fitting is completed, the problem that the time consumption of the automatic historical fitting process depending on conventional numerical simulation is high is solved, and the automatic fitting efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development, and in particular relates to an improved high-efficiency automatic history matching method for oil and gas reservoirs. Background technique [0002] In the numerical simulation of oil and gas reservoirs, the geological model of oil and gas reservoirs has a high inherent uncertainty. In order to make the dynamic prediction as close to the actual situation as possible, the geological model parameters are usually inverted by historical matching based on the production data. Actual reservoir performance to reverse and correct reservoir parameters. This allows for more accurate forecasts of future capacity. [0003] The traditional history matching method is to use manual manual parameter adjustment, the workflow is time-consuming and the fitting effect depends on subjective experience. The automatic history matching method is based on the prior geological model and minimizes t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06Q50/02G06F119/14
CPCG06F30/23G06Q50/02G06F2119/14
Inventor 张钊
Owner SHANDONG UNIV
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