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Inverse stratigraphic modeling using hybrid linear and nonlinear algorithm

A stratigraphic and inversion technology, applied in geographic modeling, seismology, complex mathematical operations, etc., to achieve the effect of improving the overall accuracy

Pending Publication Date: 2021-04-20
SAUDI ARABIAN OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Third, many input parameters must be accurately estimated
However, meeting all three prerequisites has proven technically challenging

Method used

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  • Inverse stratigraphic modeling using hybrid linear and nonlinear algorithm
  • Inverse stratigraphic modeling using hybrid linear and nonlinear algorithm
  • Inverse stratigraphic modeling using hybrid linear and nonlinear algorithm

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Embodiment Construction

[0033] The following detailed description describes inverse formation modeling using hybrid linear and nonlinear algorithms, and is presented to enable any person skilled in the art to make and use the disclosed subject matter in the context of one or more of the specific embodiments. Various modifications, changes, and permutations to the disclosed embodiments may be made and will be apparent to those of ordinary skill in the art, and the general principles defined may be applied to other embodiments and embodiments without departing from the scope of the present disclosure. application. In some cases, one or more technical details that are not necessary to gain an understanding of the described subject matter and are within the skill of one of ordinary skill in the art may be omitted so as not to obscure one or more of the described implementations. The disclosure is not intended to be limited to the described or illustrated embodiments but is to be accorded the widest scope...

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Abstract

In a first step, a defined scope value is selected for each of a plurality of hydrodynamic input parameters. A simulated topographical result is generated using the selected scope values and a forward model. A detailed seismic interpretation is generated to represent specific seismic features or observed topography. A calculated a misfit value representing a distance between the simulated topographical result and a detailed seismic interpretation is minimized. An estimated optimized sand ratio and optimized hydrodynamic input parameters are generated. In a second step, a genetic algorithm is used to determine a proportion of each grain size in the estimated optimized sand ratio. A misfit value is used that is calculated from thickness and porosity data extracted from well data and a simulation result generated by the forward model to generate optimized components of different grain sizes. Optimized hydrodynamic input parameters and optimized components of different grain sizes are generated.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Patent Application No. 15 / 994,586, filed May 31, 2018, the entire contents of which are hereby incorporated by reference. Background technique [0003] A forward stratigraphic model is a numerical representation of the detailed internal geometry and rock properties of a subsurface Earth body, such as a petroleum reservoir or a sedimentary basin, and is used as a tool for investigating the formation of stratigraphic or sedimentary strata on a geological chronology. Forward stratigraphic models provide geologic reservoir simulations, for example for selecting locations for new oil and gas wells, estimating oil and gas reserves, and planning reservoir development strategies. Three basic prerequisites are required to consider a stratigraphic forward simulation to be successful. First, the formation processes recorded by outcrops, earthquakes, or other hard data must be well understoo...

Claims

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Application Information

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IPC IPC(8): G01V1/28G01V1/30G01V99/00G06F30/28G06F30/27G06F17/12
CPCG01V1/282G01V1/301G01V1/306G01V2210/614G01V2210/6161G01V2210/661G06F30/00G01V20/00G01V2210/66G06F17/12
Inventor 张明穆赫莱丝·穆斯塔法·梅兹加尼
Owner SAUDI ARABIAN OIL CO
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