Découvrez notre Chaîne YouTube "Ingénierie et Projets"
Découvrez notre Chaîne Secondaire "Information Neuronale et l'Ingénierie du Cerveau"

Titre: Sismique Filtrage Multidimensionnel

Auteurs: Professeur Jérôme Mars (GIPSA-Lab)

Ecole: Ecole d’ingénieurs pour l’Eau, l’Energie l’Environnement (ENSE3), Ecole d’ingénieurs pour le Physique, l’Electronique et les Matériaux (PHELMA)

Résumé: Ce cours est destiné aux élèves de troisième année de l’option SICOM (Signal, Image Communication et Multimédia). Cette option est commune aux deux écoles ENSE3 (Ecole d’ingénieurs pour l’Eau, l’Energie l’Environnement et PHELMA (Ecole d’ingénieurs pour le Physique, l’Electronique et les Matériaux) ainsi qu’au élèves de Master 2 Recherche « Terre Solide » de l’école doctorale « Terre Univers Environnement » de l’Université Joseph Fourier. Pour le rédiger je me suis d’une part largement inspiré d’ouvrages déjà existants citées ci-dessous et de l’expérience que j’ai pu acquérir dans le domaine de la séparation d’ondes des signaux géophysiques depuis une vingtaine d’années et des travaux menés au Laboratoire GIPSA-Lab notamment par les doctorants. Il est destiné à des élèves qui ont déjà une expérience en traitement du signal classique, et qui voudrait en savoir un peu plus sur ces fameux signaux géophysiques et multidimensionnels. Il est clair que certaines notions sont traitées superficiellement, mais j’ai toujours essayé de donner des points d’entrés bibliographiques dans la mesure du possible. A ce cours est associé un fichier power point contenant une centaine d’illustrations disponible.

Extrait du sommaire:

CHAPITRE 1 : INTRODUCTION 8
Un peu d’histoire : 8
CHAPITRE 2 : OUTILS ET DISPOSITIFS 9
CHAPITRE 2 : OUTILS ET DISPOSITIFS 10
LES SOURCES 10
Les sources sismiques en terrestre: 10
Les sources sismiques en marine: 11
LES CAPTEURS 12
Les géophones: 12
Les hydrophones: 13
La manipulation des streamers: 14
Les capteurs multicomposantes (OBS –OBC): 14
LES TYPES DE CAMPAGNES 16
La sismique réflexion 16
Les dispositifs 17
Les collections 18
La sismique réfraction 18
La sismique de puits 20
Le profil sismique vertical 20
Le walkaway 21
La sismique de puits à puits 22
La diagraphie acoustique 22
Le radar 23
CHAPITRE 3 : RAPPELS SUCCINCT D’ACOUSTIQUE 24
LES DIFFERENTS TYPES D’ONDES 24
Les ondes de compression 24
Les ondes de cisaillement 24
Les ondes converties 25
Les ondes de surface 26
Les ondes de Rayleigh 26
Les ondes de Stoneley 26
Les ondes de Love 26
Le ground roll 27
Les ondes de diffraction 27
Les multiples 28
Le bruit 28
CHAPITRE 4 : LE TRAITEMENT DES DONNEES SISMIQUES 29
Pré traitement 29
PREMIERE PHASE : LES PRE-TRAITEMENTS 29
L’édition 29
La récupération des amplitudes 29
Filtre en fréquence et en vitesse apparente 30
Déconvolution et démultiplication 30
Cours de sismique- Filtrage multidimensionnel 6
DEUXIEME PHASE : CORRECTIONS DIVERSES ET ANALYSE DE VITESSE 31
Zone altérée et corrections statiques 31
Analyse de vitesse et corrections dynamiques 31
TROISIEME PHASE : LES SOMMATIONS 32
QUATRIEME PHASE : MIGRATION ET INVERSION 32
Migration 33
Inversion 33
CINQUIEME PHASE : ESTIMATION DES ZONES RESERVOIRS 33
Indicateurs d’hydrocarbures 33
CHAPITRE 5 : SEPARATION D’ONDES ET AMELIORATION DU RSB 36
Introduction 36
1 INTRODUCTION 36
2 LES METHODES A GABARIT 36
Filtre médian 36
Le filtre de polarisation 37
Le filtre de Wiener 39
Le filtre t-p (filtre de Radon) 41
Le filtre f-k 42
Les filtres en ondelette 44
Ondelette continue (Morlet) 44
Ondelette Discrète 47
3 LES METHODES MATRICIELLES 48
Séparation par SVD (Singular Value Decomposition) 49
Séparation par TKL 50
Séparation par SMF (Spectral Matrix filtering) 51
Estimation de la matrice spectrale 53
Conclusion 54
Extension de la SVD – ICA 55
Extension de la SVD à 3 dimensions 59
Matrices dépliantes 59
Rang d’un tableau 3D 60
Décomposition en valeurs singulières des tableaux 3D 60
Séparation d’espaces par la 3D-SVD 61
REFERENCES 64
INDEX 69

Formation-Traitement-du-signal-cours 7

Télécharger le fichiers PDF: Sismique | Filtrage Multidimensionnel

Le blog contient des publicités, elles permettent de financer l'hébergement et maintenir le blog en fonctionnement. Vous pouvez utiliser adblock pour une lecture sans publicités.
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.
Cookies settings
Accept
Decline
Privacy & Cookie policy
Privacy & Cookies policy
Cookie name Active

Privacy Policy

What information do we collect?

We collect information from you when you register on our site or place an order. When ordering or registering on our site, as appropriate, you may be asked to enter your: name, e-mail address or mailing address.

What do we use your information for?

Any of the information we collect from you may be used in one of the following ways: To personalize your experience (your information helps us to better respond to your individual needs) To improve our website (we continually strive to improve our website offerings based on the information and feedback we receive from you) To improve customer service (your information helps us to more effectively respond to your customer service requests and support needs) To process transactions Your information, whether public or private, will not be sold, exchanged, transferred, or given to any other company for any reason whatsoever, without your consent, other than for the express purpose of delivering the purchased product or service requested. To administer a contest, promotion, survey or other site feature To send periodic emails The email address you provide for order processing, will only be used to send you information and updates pertaining to your order.

How do we protect your information?

We implement a variety of security measures to maintain the safety of your personal information when you place an order or enter, submit, or access your personal information. We offer the use of a secure server. All supplied sensitive/credit information is transmitted via Secure Socket Layer (SSL) technology and then encrypted into our Payment gateway providers database only to be accessible by those authorized with special access rights to such systems, and are required to?keep the information confidential. After a transaction, your private information (credit cards, social security numbers, financials, etc.) will not be kept on file for more than 60 days.

Do we use cookies?

Yes (Cookies are small files that a site or its service provider transfers to your computers hard drive through your Web browser (if you allow) that enables the sites or service providers systems to recognize your browser and capture and remember certain information We use cookies to help us remember and process the items in your shopping cart, understand and save your preferences for future visits, keep track of advertisements and compile aggregate data about site traffic and site interaction so that we can offer better site experiences and tools in the future. We may contract with third-party service providers to assist us in better understanding our site visitors. These service providers are not permitted to use the information collected on our behalf except to help us conduct and improve our business. If you prefer, you can choose to have your computer warn you each time a cookie is being sent, or you can choose to turn off all cookies via your browser settings. Like most websites, if you turn your cookies off, some of our services may not function properly. However, you can still place orders by contacting customer service. Google Analytics We use Google Analytics on our sites for anonymous reporting of site usage and for advertising on the site. If you would like to opt-out of Google Analytics monitoring your behaviour on our sites please use this link (https://tools.google.com/dlpage/gaoptout/)

Do we disclose any information to outside parties?

We do not sell, trade, or otherwise transfer to outside parties your personally identifiable information. This does not include trusted third parties who assist us in operating our website, conducting our business, or servicing you, so long as those parties agree to keep this information confidential. We may also release your information when we believe release is appropriate to comply with the law, enforce our site policies, or protect ours or others rights, property, or safety. However, non-personally identifiable visitor information may be provided to other parties for marketing, advertising, or other uses.

Registration

The minimum information we need to register you is your name, email address and a password. We will ask you more questions for different services, including sales promotions. Unless we say otherwise, you have to answer all the registration questions. We may also ask some other, voluntary questions during registration for certain services (for example, professional networks) so we can gain a clearer understanding of who you are. This also allows us to personalise services for you. To assist us in our marketing, in addition to the data that you provide to us if you register, we may also obtain data from trusted third parties to help us understand what you might be interested in. This ‘profiling’ information is produced from a variety of sources, including publicly available data (such as the electoral roll) or from sources such as surveys and polls where you have given your permission for your data to be shared. You can choose not to have such data shared with the Guardian from these sources by logging into your account and changing the settings in the privacy section. After you have registered, and with your permission, we may send you emails we think may interest you. Newsletters may be personalised based on what you have been reading on theguardian.com. At any time you can decide not to receive these emails and will be able to ‘unsubscribe’. Logging in using social networking credentials If you log-in to our sites using a Facebook log-in, you are granting permission to Facebook to share your user details with us. This will include your name, email address, date of birth and location which will then be used to form a Guardian identity. You can also use your picture from Facebook as part of your profile. This will also allow us and Facebook to share your, networks, user ID and any other information you choose to share according to your Facebook account settings. If you remove the Guardian app from your Facebook settings, we will no longer have access to this information. If you log-in to our sites using a Google log-in, you grant permission to Google to share your user details with us. This will include your name, email address, date of birth, sex and location which we will then use to form a Guardian identity. You may use your picture from Google as part of your profile. This also allows us to share your networks, user ID and any other information you choose to share according to your Google account settings. If you remove the Guardian from your Google settings, we will no longer have access to this information. If you log-in to our sites using a twitter log-in, we receive your avatar (the small picture that appears next to your tweets) and twitter username.

Children’s Online Privacy Protection Act Compliance

We are in compliance with the requirements of COPPA (Childrens Online Privacy Protection Act), we do not collect any information from anyone under 13 years of age. Our website, products and services are all directed to people who are at least 13 years old or older.

Updating your personal information

We offer a ‘My details’ page (also known as Dashboard), where you can update your personal information at any time, and change your marketing preferences. You can get to this page from most pages on the site – simply click on the ‘My details’ link at the top of the screen when you are signed in.

Online Privacy Policy Only

This online privacy policy applies only to information collected through our website and not to information collected offline.

Your Consent

By using our site, you consent to our privacy policy.

Changes to our Privacy Policy

If we decide to change our privacy policy, we will post those changes on this page.
Save settings
Cookies settings

You have successfully subscribed to the newsletter

There was an error while trying to send your request. Please try again.

FPGA | Arduino | Matlab | Cours will use the information you provide on this form to be in touch with you and to provide updates and marketing.