Prototype geologic model earthquake forward modeling method based on carbonate reservoir cropout

A carbonate reservoir and geological model technology, applied in the field of geological model demonstration, can solve the problem that the mathematical physical model cannot characterize the prototype characteristics of carbonate reservoir

Active Publication Date: 2017-06-16
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

The present invention is mainly to solve the problem that the mathematical physical model cannot characterize the prototype characteristics of carbonate rock reservoirs

Method used

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Experimental program
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Embodiment Construction

[0021] The steps of the present invention are as follows:

[0022] Step 1: Acquisition of outcrop geological data of reservoir outcrop

[0023] Select multiple routes for typical outcrop profiles to carry out actual measurement work, describe the distribution characteristics of reservoirs at a high-resolution scale, enlarge the scale vertically, expand the tracking and observation range horizontally, and collect outcrop appearance and shape data by combining photography and video ; On the basis of clarifying the spatial distribution characteristics of lithofacies and sedimentary microfacies, combined with intensive sampling to obtain rock samples and rock gamma parameters. It is also possible to restore the field outcrop model indoors after the geological sketch of the carbonate outcrop in the field, and carry out seismic numerical simulation on the restored numerical model of the outcrop indoors.

[0024] Step 2: Fine research on reservoir heterogeneity characteristics in th...

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Abstract

The invention discloses a prototype geologic model earthquake forward modeling method based on carbonate reservoir cropout, and belongs to the technical field of geologic model demonstration. Based on cropout profile fine geology description, fine depiction is carried out on reservoir vertical superposition style and spatial distribution rule, a carbonate reservoir heterogeneous quantitative geologic model is established, an earthquake collection instrument is used on cropout ground surface for carrying out earthquake reflected wave data collection, a geologic formation mechanism with earthquake reflection characteristics is analyzed, and a set of industrialized standard for quantitative recognition of carbonate reservoir earthquakes is formed, so that the problem that a mathematical physical model cannot represent carbonate reservoir prototypical features is solved. The method can mostly truthfully reduce the earthquake actual reflection characters of the reservoir, a prototype reservoir model is established through field outcrops, and the actual earthquake wave field information of the prototype cropout reservoir is analyzed, so that a carbonate reservoir earthquake quantitative recognition mode of the system can be established.

Description

technical field [0001] The invention belongs to the technical field of geological model demonstration, and in particular relates to a seismic forward modeling method of a prototype geological model based on outcrops of carbonate rock reservoirs. Background technique [0002] In the process of structural interpretation or lithological interpretation of actual seismic data, in order to have a further understanding of the data, it is necessary to establish a typical "geological concept model" based on the interpretation results. The model is a simplification of the real geological structure, and only includes several important factors that affect the seismic section, such as formation velocity, density, thickness, and the spatial shape of the interface. According to a given model, the seismic response of the model is simulated by computer. The simulation process is usually iterative, and the simulation results can assist interpreters to understand the manifestations of differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
CPCG01V1/282
Inventor 杨巍朱仕军王兴志
Owner SOUTHWEST PETROLEUM UNIV
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