Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Cycle division method and apparatus of sedimentary stratum

A stratigraphic and geophysical technology, applied in the field of geological exploration, can solve the problems of lack of objectivity and the influence of human factors, and achieve the effect of small human factors and objective calculation process

Active Publication Date: 2018-04-06
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method and device for dividing sedimentary strata cycles, which are used to solve the technical problems in the prior art that manual empirical judgment is required when dividing sedimentary strata, which is affected by human factors and lacks objectivity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cycle division method and apparatus of sedimentary stratum
  • Cycle division method and apparatus of sedimentary stratum
  • Cycle division method and apparatus of sedimentary stratum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] figure 1 A schematic flow chart of the sedimentary stratum cycle division method provided in Embodiment 1 of the present invention; figure 1 As shown, this embodiment provides a method for dividing sedimentary strata cycles, including step 101-step 106.

[0058] Wherein, step 101, preprocessing the acquired data reflecting the original depositional environment and lithology changes of the stratum to obtain preprocessed data, the data include geochemical analysis data of rock samples, geophysical logging data and seismic data.

[0059] In this embodiment, rock sample geochemical analysis data, geophysical logging data and seismic data are selected as data. According to the correlation between the above data and the change of sedimentary facies and lithofacies, or the data recorded in the published literature that can reflect the original depositional environment and lithology changes of the stratum, the data should be selected. Among them, geophysical logging data and ...

Embodiment 2

[0072] This embodiment is a supplementary description based on the above embodiments.

[0073] figure 2 A schematic flow chart of the sedimentary stratum cycle division method provided in Embodiment 2 of the present invention; as figure 2 As shown, this embodiment provides a method for dividing sedimentary strata cycles, including:

[0074] Wherein, step 1011, normalize and standardize the geophysical data to obtain standardized data, wherein the geophysical data includes geophysical logging data and seismic data.

[0075] Based on the geochemical analysis data of rock samples, geophysical logging data and seismic data, according to the correlation between the above data and sedimentary facies and lithofacies changes, or the published literature records that can reflect the original sedimentary environment and lithological changes of the strata Geophysical logging data and seismic data are generally continuous data, and normalization and standardization are performed on di...

Embodiment 3

[0091] This embodiment is an embodiment of a device, which is used to execute the method in the first embodiment above.

[0092] image 3 Schematic diagram of the structure of the sedimentary stratum cycle division device provided in Embodiment 3 of the present invention; as image 3 As shown, this embodiment provides a sedimentary stratum cycle division device, including: a preprocessing module 201, an eigenmode function acquisition module 202, an instantaneous frequency curve acquisition module 203, a Milankovitch cycle curve acquisition module 204, which can accommodate A spatial variation curve acquisition module 205 and a division module 206 .

[0093] Among them, the preprocessing module 201 is used to preprocess the obtained data reflecting the original depositional environment and lithology changes of the stratum to obtain preprocessed data, which include rock sample geochemical analysis data, geophysical logging data and seismic data;

[0094] The eigenmode functio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a cycle division method and apparatus of a sedimentary stratum. The method comprises: pretreatment is carried out on obtained data reflecting an original stratum sedimentary environment and a lithological change to obtain pretreatment data; empirical mode decomposition is carried out on the pretreatment data to obtain a plurality of intrinsic modal functions; conversion is carried out on each intrinsic modal function to obtain an instantaneous frequency curve corresponding to the intrinsic modal function; according to the instantaneous frequency curve, a Milankovitch cycle curve is obtained; on the basis of the Milankovitch cycle curve, an accommodating space changing curve is obtained; and according to the accommodating space changing curve, an accommodating spatialascending half cycle and an accommodating spatial descending half cycle are obtained. According to the division method, the calculation process is objective and the influence on the process by the human factor is low. And the division method has high operability.

Description

technical field [0001] The invention relates to the field of geological exploration, in particular to a method and device for dividing sedimentary stratum cycles. Background technique [0002] High-frequency cycle identification is an important part of geological exploration work, and high-precision sequence stratigraphic division and correlation is the necessary basis for fine reservoir prediction. [0003] In the prior art, the methods for applying empirical mode decomposition to formation cycle identification include: on the basis of establishing a seismic or logging model corresponding to the target layer, the formation cycle is identified and divided through frequency changes (CN101349764A; CN101349764B; Sun Xinggang et al., Xi Application of time-frequency analysis of Albert-Huang transform in the division of sedimentary cycles, Petroleum Geology and Recovery, November 2012); directly correspond different levels of eigenmode functions to different levels of sequence le...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/50G01N33/24
CPCG01N33/24G01V1/50G01V2210/614
Inventor 高晓鹏王毅李慧莉云金表李京昌周波杨伟利张仲培蔡习尧
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com