An improved efficient automatic history matching method for oil and gas reservoirs

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

Active Publication Date: 2022-03-11
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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  • An improved efficient automatic history matching method for oil and gas reservoirs
  • An improved efficient automatic history matching method for oil and gas reservoirs
  • An improved efficient automatic history matching method for oil and gas reservoirs

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

[0036] In the process of history matching, different parameters in oil and gas reservoirs have their own controllable 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, and the pa...

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Abstract

The invention discloses an improved high-efficiency automatic history fitting method for oil and gas reservoirs. The steps are as follows: S1. Obtain the hard data of the well point, and process the hard data of the well point to obtain several prior geological models. The prior geological model is regarded as a set; S2, based on the prior geological model, the fast marching method and the differential evolution algorithm are used to perform fitting calculation. By combining the fast marching method and the differential evolution algorithm, the technology of the present invention provides an efficient automatic history method for oil and gas reservoirs considering single-phase unstable seepage, which can quickly converge to the minimum value of the objective function, thereby completing automatic history fitting and solving the dependence The automatic history fitting process of conventional numerical simulation is time-consuming, which improves the efficiency of automatic fitting.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development, in particular 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 as possible to the actual situation, the parameters of the geological model are usually inverted based on the historical fitting of production data. Actual oil and gas reservoir dynamics are used to reverse summation and correct oil and gas reservoir parameters. This allows for more accurate forecasting of future capacity. [0003] The traditional history fitting method is to use manual parameter adjustment, the workflow is time-consuming and the fitting effect depends on subjective experience. The automatic history fitting method is based on the prior geolo...

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Application Information

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